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root/jsr166/jsr166/src/test/tck/JSR166TestCase.java

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.22 by dl, Tue Jan 20 20:20:56 2004 UTC vs.
Revision 1.223 by jsr166, Sat May 13 19:13:09 2017 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
7	>	* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.*;
12	<	import java.util.concurrent.*;
13	<	import java.io.*;
14	<	import java.security.*;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	>	import static java.util.concurrent.TimeUnit.MINUTES;
45	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	>
47	>	import java.io.ByteArrayInputStream;
48	>	import java.io.ByteArrayOutputStream;
49	>	import java.io.ObjectInputStream;
50	>	import java.io.ObjectOutputStream;
51	>	import java.lang.management.ManagementFactory;
52	>	import java.lang.management.ThreadInfo;
53	>	import java.lang.management.ThreadMXBean;
54	>	import java.lang.reflect.Constructor;
55	>	import java.lang.reflect.Method;
56	>	import java.lang.reflect.Modifier;
57	>	import java.security.CodeSource;
58	>	import java.security.Permission;
59	>	import java.security.PermissionCollection;
60	>	import java.security.Permissions;
61	>	import java.security.Policy;
62	>	import java.security.ProtectionDomain;
63	>	import java.security.SecurityPermission;
64	>	import java.util.ArrayList;
65	>	import java.util.Arrays;
66	>	import java.util.Collection;
67	>	import java.util.Collections;
68	>	import java.util.Date;
69	>	import java.util.Enumeration;
70	>	import java.util.Iterator;
71	>	import java.util.List;
72	>	import java.util.NoSuchElementException;
73	>	import java.util.PropertyPermission;
74	>	import java.util.concurrent.BlockingQueue;
75	>	import java.util.concurrent.Callable;
76	>	import java.util.concurrent.CountDownLatch;
77	>	import java.util.concurrent.CyclicBarrier;
78	>	import java.util.concurrent.ExecutionException;
79	>	import java.util.concurrent.Executors;
80	>	import java.util.concurrent.ExecutorService;
81	>	import java.util.concurrent.ForkJoinPool;
82	>	import java.util.concurrent.Future;
83	>	import java.util.concurrent.RecursiveAction;
84	>	import java.util.concurrent.RecursiveTask;
85	>	import java.util.concurrent.RejectedExecutionHandler;
86	>	import java.util.concurrent.Semaphore;
87	>	import java.util.concurrent.SynchronousQueue;
88	>	import java.util.concurrent.ThreadFactory;
89	>	import java.util.concurrent.ThreadLocalRandom;
90	>	import java.util.concurrent.ThreadPoolExecutor;
91	>	import java.util.concurrent.TimeoutException;
92	>	import java.util.concurrent.atomic.AtomicBoolean;
93	>	import java.util.concurrent.atomic.AtomicReference;
94	>	import java.util.regex.Pattern;
95	>
96	>	import junit.framework.AssertionFailedError;
97	>	import junit.framework.Test;
98	>	import junit.framework.TestCase;
99	>	import junit.framework.TestResult;
100	>	import junit.framework.TestSuite;
101
102		/**
103		* Base class for JSR166 Junit TCK tests.  Defines some constants,
104		* utility methods and classes, as well as a simple framework for
105		* helping to make sure that assertions failing in generated threads
106		* cause the associated test that generated them to itself fail (which
107	<	* JUnit doe not otherwise arrange).  The rules for creating such
107	>	* JUnit does not otherwise arrange).  The rules for creating such
108		* tests are:
109		*
110		* <ol>
111		*
112	<	* <li> All assertions in code running in generated threads must use
113	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
112	>	* <li>All assertions in code running in generated threads must use
113	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
114		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
115	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
115	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
116		* particularly recommended) for other code to use these forms too.
117		* Only the most typically used JUnit assertion methods are defined
118	<	* this way, but enough to live with.</li>
118	>	* this way, but enough to live with.
119		*
120	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
121	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
120	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
121	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
122		* them. These methods are used to clear and check for thread
123	<	* assertion failures.</li>
123	>	* assertion failures.
124		*
125	<	* <li>All delays and timeouts must use one of the constants <tt>
126	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
127	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
125	>	* <li>All delays and timeouts must use one of the constants {@code
126	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
127	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
128		* discriminable from zero time, and always allows enough time for the
129		* small amounts of computation (creating a thread, calling a few
130		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
131		* is always discriminable as larger than SHORT and smaller than
132		* MEDIUM.  And so on. These constants are set to conservative values,
133		* but even so, if there is ever any doubt, they can all be increased
134	<	* in one spot to rerun tests on slower platforms</li>
134	>	* in one spot to rerun tests on slower platforms.
135		*
136	<	* <li> All threads generated must be joined inside each test case
137	<	* method (or <tt>fail</tt> to do so) before returning from the
138	<	* method. The <tt> joinPool</tt> method can be used to do this when
139	<	* using Executors.</li>
136	>	* <li>All threads generated must be joined inside each test case
137	>	* method (or {@code fail} to do so) before returning from the
138	>	* method. The {@code joinPool} method can be used to do this when
139	>	* using Executors.
140		*
141		* </ol>
142		*
143	<	* <p> <b>Other notes</b>
143	>	* <p><b>Other notes</b>
144		* <ul>
145		*
146	<	* <li> Usually, there is one testcase method per JSR166 method
146	>	* <li>Usually, there is one testcase method per JSR166 method
147		* covering "normal" operation, and then as many exception-testing
148		* methods as there are exceptions the method can throw. Sometimes
149		* there are multiple tests per JSR166 method when the different
150		* "normal" behaviors differ significantly. And sometimes testcases
151	<	* cover multiple methods when they cannot be tested in
152	<	* isolation.</li>
153	<	*
67	<	* <li> The documentation style for testcases is to provide as javadoc
151	>	* cover multiple methods when they cannot be tested in isolation.
152	>	*
153	>	* <li>The documentation style for testcases is to provide as javadoc
154		* a simple sentence or two describing the property that the testcase
155		* method purports to test. The javadocs do not say anything about how
156	<	* the property is tested. To find out, read the code.</li>
156	>	* the property is tested. To find out, read the code.
157		*
158	<	* <li> These tests are "conformance tests", and do not attempt to
158	>	* <li>These tests are "conformance tests", and do not attempt to
159		* test throughput, latency, scalability or other performance factors
160		* (see the separate "jtreg" tests for a set intended to check these
161		* for the most central aspects of functionality.) So, most tests use
162		* the smallest sensible numbers of threads, collection sizes, etc
163	<	* needed to check basic conformance.</li>
163	>	* needed to check basic conformance.
164		*
165		* <li>The test classes currently do not declare inclusion in
166		* any particular package to simplify things for people integrating
167	<	* them in TCK test suites.</li>
167	>	* them in TCK test suites.
168		*
169	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
170	<	* runs all JSR166 unit tests.</li>
169	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
170	>	* runs all JSR166 unit tests.
171		*
172		* </ul>
173		*/
174		public class JSR166TestCase extends TestCase {
175	+	private static final boolean useSecurityManager =
176	+	Boolean.getBoolean("jsr166.useSecurityManager");
177	+
178	+	protected static final boolean expensiveTests =
179	+	Boolean.getBoolean("jsr166.expensiveTests");
180	+
181	+	/**
182	+	* If true, also run tests that are not part of the official tck
183	+	* because they test unspecified implementation details.
184	+	*/
185	+	protected static final boolean testImplementationDetails =
186	+	Boolean.getBoolean("jsr166.testImplementationDetails");
187	+
188	+	/**
189	+	* If true, report on stdout all "slow" tests, that is, ones that
190	+	* take more than profileThreshold milliseconds to execute.
191	+	*/
192	+	private static final boolean profileTests =
193	+	Boolean.getBoolean("jsr166.profileTests");
194	+
195	+	/**
196	+	* The number of milliseconds that tests are permitted for
197	+	* execution without being reported, when profileTests is set.
198	+	*/
199	+	private static final long profileThreshold =
200	+	Long.getLong("jsr166.profileThreshold", 100);
201	+
202		/**
203	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
204	<	*/
205	<	public static void main (String[] args) {
206	<	int iters = 1;
207	<	if (args.length > 0)
208	<	iters = Integer.parseInt(args[0]);
209	<	Test s = suite();
210	<	for (int i = 0; i < iters; ++i) {
211	<	junit.textui.TestRunner.run (s);
203	>	* The number of repetitions per test (for tickling rare bugs).
204	>	*/
205	>	private static final int runsPerTest =
206	>	Integer.getInteger("jsr166.runsPerTest", 1);
207	>
208	>	/**
209	>	* The number of repetitions of the test suite (for finding leaks?).
210	>	*/
211	>	private static final int suiteRuns =
212	>	Integer.getInteger("jsr166.suiteRuns", 1);
213	>
214	>	/**
215	>	* Returns the value of the system property, or NaN if not defined.
216	>	*/
217	>	private static float systemPropertyValue(String name) {
218	>	String floatString = System.getProperty(name);
219	>	if (floatString == null)
220	>	return Float.NaN;
221	>	try {
222	>	return Float.parseFloat(floatString);
223	>	} catch (NumberFormatException ex) {
224	>	throw new IllegalArgumentException(
225	>	String.format("Bad float value in system property %s=%s",
226	>	name, floatString));
227	>	}
228	>	}
229	>
230	>	/**
231	>	* The scaling factor to apply to standard delays used in tests.
232	>	* May be initialized from any of:
233	>	* - the "jsr166.delay.factor" system property
234	>	* - the "test.timeout.factor" system property (as used by jtreg)
235	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
236	>	* - hard-coded fuzz factor when using a known slowpoke VM
237	>	*/
238	>	private static final float delayFactor = delayFactor();
239	>
240	>	private static float delayFactor() {
241	>	float x;
242	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
243	>	return x;
244	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
245	>	return x;
246	>	String prop = System.getProperty("java.vm.version");
247	>	if (prop != null && prop.matches(".*debug.*"))
248	>	return 4.0f; // How much slower is fastdebug than product?!
249	>	return 1.0f;
250	>	}
251	>
252	>	public JSR166TestCase() { super(); }
253	>	public JSR166TestCase(String name) { super(name); }
254	>
255	>	/**
256	>	* A filter for tests to run, matching strings of the form
257	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
258	>	* Usefully combined with jsr166.runsPerTest.
259	>	*/
260	>	private static final Pattern methodFilter = methodFilter();
261	>
262	>	private static Pattern methodFilter() {
263	>	String regex = System.getProperty("jsr166.methodFilter");
264	>	return (regex == null) ? null : Pattern.compile(regex);
265	>	}
266	>
267	>	// Instrumentation to debug very rare, but very annoying hung test runs.
268	>	static volatile TestCase currentTestCase;
269	>	// static volatile int currentRun = 0;
270	>	static {
271	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
272	>	// Avoid spurious reports with enormous runsPerTest.
273	>	// A single test case run should never take more than 1 second.
274	>	// But let's cap it at the high end too ...
275	>	final int timeoutMinutes =
276	>	Math.min(15, Math.max(runsPerTest / 60, 1));
277	>	for (TestCase lastTestCase = currentTestCase;;) {
278	>	try { MINUTES.sleep(timeoutMinutes); }
279	>	catch (InterruptedException unexpected) { break; }
280	>	if (lastTestCase == currentTestCase) {
281	>	System.err.printf(
282	>	"Looks like we're stuck running test: %s%n",
283	>	lastTestCase);
284	>	//                     System.err.printf(
285	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
286	>	//                         lastTestCase, currentRun, runsPerTest);
287	>	//                     System.err.println("availableProcessors=" +
288	>	//                         Runtime.getRuntime().availableProcessors());
289	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
290	>	dumpTestThreads();
291	>	// one stack dump is probably enough; more would be spam
292	>	break;
293	>	}
294	>	lastTestCase = currentTestCase;
295	>	}}};
296	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
297	>	thread.setDaemon(true);
298	>	thread.start();
299	>	}
300	>
301	>	//     public static String cpuModel() {
302	>	//         try {
303	>	//             java.util.regex.Matcher matcher
304	>	//               = Pattern.compile("model name\\s*: (.*)")
305	>	//                 .matcher(new String(
306	>	//                     java.nio.file.Files.readAllBytes(
307	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
308	>	//             matcher.find();
309	>	//             return matcher.group(1);
310	>	//         } catch (Exception ex) { return null; }
311	>	//     }
312	>
313	>	public void runBare() throws Throwable {
314	>	currentTestCase = this;
315	>	if (methodFilter == null
316	>	|| methodFilter.matcher(toString()).find())
317	>	super.runBare();
318	>	}
319	>
320	>	protected void runTest() throws Throwable {
321	>	for (int i = 0; i < runsPerTest; i++) {
322	>	// currentRun = i;
323	>	if (profileTests)
324	>	runTestProfiled();
325	>	else
326	>	super.runTest();
327	>	}
328	>	}
329	>
330	>	protected void runTestProfiled() throws Throwable {
331	>	for (int i = 0; i < 2; i++) {
332	>	long startTime = System.nanoTime();
333	>	super.runTest();
334	>	long elapsedMillis = millisElapsedSince(startTime);
335	>	if (elapsedMillis < profileThreshold)
336	>	break;
337	>	// Never report first run of any test; treat it as a
338	>	// warmup run, notably to trigger all needed classloading,
339	>	if (i > 0)
340	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
341	>	}
342	>	}
343	>
344	>	/**
345	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
346	>	*/
347	>	public static void main(String[] args) {
348	>	main(suite(), args);
349	>	}
350	>
351	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
352	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
353	>	long runTime;
354	>	public void startTest(Test test) {}
355	>	protected void printHeader(long runTime) {
356	>	this.runTime = runTime; // defer printing for later
357	>	}
358	>	protected void printFooter(TestResult result) {
359	>	if (result.wasSuccessful()) {
360	>	getWriter().println("OK (" + result.runCount() + " tests)"
361	>	+ "  Time: " + elapsedTimeAsString(runTime));
362	>	} else {
363	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
364	>	super.printFooter(result);
365	>	}
366	>	}
367	>	}
368	>
369	>	/**
370	>	* Returns a TestRunner that doesn't bother with unnecessary
371	>	* fluff, like printing a "." for each test case.
372	>	*/
373	>	static junit.textui.TestRunner newPithyTestRunner() {
374	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
375	>	runner.setPrinter(new PithyResultPrinter(System.out));
376	>	return runner;
377	>	}
378	>
379	>	/**
380	>	* Runs all unit tests in the given test suite.
381	>	* Actual behavior influenced by jsr166.* system properties.
382	>	*/
383	>	static void main(Test suite, String[] args) {
384	>	if (useSecurityManager) {
385	>	System.err.println("Setting a permissive security manager");
386	>	Policy.setPolicy(permissivePolicy());
387	>	System.setSecurityManager(new SecurityManager());
388	>	}
389	>	for (int i = 0; i < suiteRuns; i++) {
390	>	TestResult result = newPithyTestRunner().doRun(suite);
391	>	if (!result.wasSuccessful())
392	>	System.exit(1);
393		System.gc();
394		System.runFinalization();
395		}
396	<	System.exit(0);
396	>	}
397	>
398	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
399	>	TestSuite suite = new TestSuite();
400	>	for (Object suiteOrClass : suiteOrClasses) {
401	>	if (suiteOrClass instanceof TestSuite)
402	>	suite.addTest((TestSuite) suiteOrClass);
403	>	else if (suiteOrClass instanceof Class)
404	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
405	>	else
406	>	throw new ClassCastException("not a test suite or class");
407	>	}
408	>	return suite;
409	>	}
410	>
411	>	public static void addNamedTestClasses(TestSuite suite,
412	>	String... testClassNames) {
413	>	for (String testClassName : testClassNames) {
414	>	try {
415	>	Class<?> testClass = Class.forName(testClassName);
416	>	Method m = testClass.getDeclaredMethod("suite",
417	>	new Class<?>[0]);
418	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
419	>	} catch (Exception e) {
420	>	throw new Error("Missing test class", e);
421	>	}
422	>	}
423	>	}
424	>
425	>	public static final double JAVA_CLASS_VERSION;
426	>	public static final String JAVA_SPECIFICATION_VERSION;
427	>	static {
428	>	try {
429	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
430	>	new java.security.PrivilegedAction<Double>() {
431	>	public Double run() {
432	>	return Double.valueOf(System.getProperty("java.class.version"));}});
433	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
434	>	new java.security.PrivilegedAction<String>() {
435	>	public String run() {
436	>	return System.getProperty("java.specification.version");}});
437	>	} catch (Throwable t) {
438	>	throw new Error(t);
439	>	}
440	>	}
441	>
442	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
443	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
444	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
445	>	public static boolean atLeastJava9() {
446	>	return JAVA_CLASS_VERSION >= 53.0
447	>	// As of 2015-09, java9 still uses 52.0 class file version
448	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
449	>	}
450	>	public static boolean atLeastJava10() {
451	>	return JAVA_CLASS_VERSION >= 54.0
452	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
453		}
454
455		/**
456	<	* Collects all JSR166 unit tests as one suite
457	<	*/
458	<	public static Test suite ( ) {
459	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
460	<
461	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
462	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
463	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
464	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
465	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
466	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
467	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
468	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
469	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
470	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
471	<	suite.addTest(new TestSuite(AtomicLongTest.class));
472	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
473	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
474	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
475	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
476	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
477	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
478	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
479	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
480	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
481	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
482	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
483	<	suite.addTest(new TestSuite(DelayQueueTest.class));
484	<	suite.addTest(new TestSuite(ExchangerTest.class));
485	<	suite.addTest(new TestSuite(ExecutorsTest.class));
486	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
487	<	suite.addTest(new TestSuite(FutureTaskTest.class));
488	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
489	<	suite.addTest(new TestSuite(LinkedListTest.class));
490	<	suite.addTest(new TestSuite(LockSupportTest.class));
491	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
492	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
493	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
494	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
495	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
496	<	suite.addTest(new TestSuite(SemaphoreTest.class));
497	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
498	<	suite.addTest(new TestSuite(SystemTest.class));
499	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
500	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
501	<	suite.addTest(new TestSuite(ThreadTest.class));
502	<	suite.addTest(new TestSuite(TimeUnitTest.class));
503	<
456	>	* Collects all JSR166 unit tests as one suite.
457	>	*/
458	>	public static Test suite() {
459	>	// Java7+ test classes
460	>	TestSuite suite = newTestSuite(
461	>	ForkJoinPoolTest.suite(),
462	>	ForkJoinTaskTest.suite(),
463	>	RecursiveActionTest.suite(),
464	>	RecursiveTaskTest.suite(),
465	>	LinkedTransferQueueTest.suite(),
466	>	PhaserTest.suite(),
467	>	ThreadLocalRandomTest.suite(),
468	>	AbstractExecutorServiceTest.suite(),
469	>	AbstractQueueTest.suite(),
470	>	AbstractQueuedSynchronizerTest.suite(),
471	>	AbstractQueuedLongSynchronizerTest.suite(),
472	>	ArrayBlockingQueueTest.suite(),
473	>	ArrayDequeTest.suite(),
474	>	ArrayListTest.suite(),
475	>	AtomicBooleanTest.suite(),
476	>	AtomicIntegerArrayTest.suite(),
477	>	AtomicIntegerFieldUpdaterTest.suite(),
478	>	AtomicIntegerTest.suite(),
479	>	AtomicLongArrayTest.suite(),
480	>	AtomicLongFieldUpdaterTest.suite(),
481	>	AtomicLongTest.suite(),
482	>	AtomicMarkableReferenceTest.suite(),
483	>	AtomicReferenceArrayTest.suite(),
484	>	AtomicReferenceFieldUpdaterTest.suite(),
485	>	AtomicReferenceTest.suite(),
486	>	AtomicStampedReferenceTest.suite(),
487	>	ConcurrentHashMapTest.suite(),
488	>	ConcurrentLinkedDequeTest.suite(),
489	>	ConcurrentLinkedQueueTest.suite(),
490	>	ConcurrentSkipListMapTest.suite(),
491	>	ConcurrentSkipListSubMapTest.suite(),
492	>	ConcurrentSkipListSetTest.suite(),
493	>	ConcurrentSkipListSubSetTest.suite(),
494	>	CopyOnWriteArrayListTest.suite(),
495	>	CopyOnWriteArraySetTest.suite(),
496	>	CountDownLatchTest.suite(),
497	>	CountedCompleterTest.suite(),
498	>	CyclicBarrierTest.suite(),
499	>	DelayQueueTest.suite(),
500	>	EntryTest.suite(),
501	>	ExchangerTest.suite(),
502	>	ExecutorsTest.suite(),
503	>	ExecutorCompletionServiceTest.suite(),
504	>	FutureTaskTest.suite(),
505	>	LinkedBlockingDequeTest.suite(),
506	>	LinkedBlockingQueueTest.suite(),
507	>	LinkedListTest.suite(),
508	>	LockSupportTest.suite(),
509	>	PriorityBlockingQueueTest.suite(),
510	>	PriorityQueueTest.suite(),
511	>	ReentrantLockTest.suite(),
512	>	ReentrantReadWriteLockTest.suite(),
513	>	ScheduledExecutorTest.suite(),
514	>	ScheduledExecutorSubclassTest.suite(),
515	>	SemaphoreTest.suite(),
516	>	SynchronousQueueTest.suite(),
517	>	SystemTest.suite(),
518	>	ThreadLocalTest.suite(),
519	>	ThreadPoolExecutorTest.suite(),
520	>	ThreadPoolExecutorSubclassTest.suite(),
521	>	ThreadTest.suite(),
522	>	TimeUnitTest.suite(),
523	>	TreeMapTest.suite(),
524	>	TreeSetTest.suite(),
525	>	TreeSubMapTest.suite(),
526	>	TreeSubSetTest.suite(),
527	>	VectorTest.suite());
528	>
529	>	// Java8+ test classes
530	>	if (atLeastJava8()) {
531	>	String[] java8TestClassNames = {
532	>	"ArrayDeque8Test",
533	>	"Atomic8Test",
534	>	"CompletableFutureTest",
535	>	"ConcurrentHashMap8Test",
536	>	"CountedCompleter8Test",
537	>	"DoubleAccumulatorTest",
538	>	"DoubleAdderTest",
539	>	"ForkJoinPool8Test",
540	>	"ForkJoinTask8Test",
541	>	"LinkedBlockingDeque8Test",
542	>	"LinkedBlockingQueue8Test",
543	>	"LongAccumulatorTest",
544	>	"LongAdderTest",
545	>	"SplittableRandomTest",
546	>	"StampedLockTest",
547	>	"SubmissionPublisherTest",
548	>	"ThreadLocalRandom8Test",
549	>	"TimeUnit8Test",
550	>	};
551	>	addNamedTestClasses(suite, java8TestClassNames);
552	>	}
553	>
554	>	// Java9+ test classes
555	>	if (atLeastJava9()) {
556	>	String[] java9TestClassNames = {
557	>	"AtomicBoolean9Test",
558	>	"AtomicInteger9Test",
559	>	"AtomicIntegerArray9Test",
560	>	"AtomicLong9Test",
561	>	"AtomicLongArray9Test",
562	>	"AtomicReference9Test",
563	>	"AtomicReferenceArray9Test",
564	>	"ExecutorCompletionService9Test",
565	>	"ForkJoinPool9Test",
566	>	};
567	>	addNamedTestClasses(suite, java9TestClassNames);
568	>	}
569	>
570		return suite;
571		}
572
573	+	/** Returns list of junit-style test method names in given class. */
574	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
575	+	Method[] methods = testClass.getDeclaredMethods();
576	+	ArrayList<String> names = new ArrayList<>(methods.length);
577	+	for (Method method : methods) {
578	+	if (method.getName().startsWith("test")
579	+	&& Modifier.isPublic(method.getModifiers())
580	+	// method.getParameterCount() requires jdk8+
581	+	&& method.getParameterTypes().length == 0) {
582	+	names.add(method.getName());
583	+	}
584	+	}
585	+	return names;
586	+	}
587	+
588	+	/**
589	+	* Returns junit-style testSuite for the given test class, but
590	+	* parameterized by passing extra data to each test.
591	+	*/
592	+	public static <ExtraData> Test parameterizedTestSuite
593	+	(Class<? extends JSR166TestCase> testClass,
594	+	Class<ExtraData> dataClass,
595	+	ExtraData data) {
596	+	try {
597	+	TestSuite suite = new TestSuite();
598	+	Constructor c =
599	+	testClass.getDeclaredConstructor(dataClass, String.class);
600	+	for (String methodName : testMethodNames(testClass))
601	+	suite.addTest((Test) c.newInstance(data, methodName));
602	+	return suite;
603	+	} catch (Exception e) {
604	+	throw new Error(e);
605	+	}
606	+	}
607	+
608	+	/**
609	+	* Returns junit-style testSuite for the jdk8 extension of the
610	+	* given test class, but parameterized by passing extra data to
611	+	* each test.  Uses reflection to allow compilation in jdk7.
612	+	*/
613	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
614	+	(Class<? extends JSR166TestCase> testClass,
615	+	Class<ExtraData> dataClass,
616	+	ExtraData data) {
617	+	if (atLeastJava8()) {
618	+	String name = testClass.getName();
619	+	String name8 = name.replaceAll("Test$", "8Test");
620	+	if (name.equals(name8)) throw new Error(name);
621	+	try {
622	+	return (Test)
623	+	Class.forName(name8)
624	+	.getMethod("testSuite", new Class[] { dataClass })
625	+	.invoke(null, data);
626	+	} catch (Exception e) {
627	+	throw new Error(e);
628	+	}
629	+	} else {
630	+	return new TestSuite();
631	+	}
632	+	}
633	+
634	+	// Delays for timing-dependent tests, in milliseconds.
635
636		public static long SHORT_DELAY_MS;
637		public static long SMALL_DELAY_MS;
638		public static long MEDIUM_DELAY_MS;
639		public static long LONG_DELAY_MS;
640
163	–
641		/**
642	<	* Return the shortest timed delay. This could
643	<	* be reimplemented to use for example a Property.
644	<	*/
642	>	* Returns the shortest timed delay. This can be scaled up for
643	>	* slow machines using the jsr166.delay.factor system property,
644	>	* or via jtreg's -timeoutFactor: flag.
645	>	* http://openjdk.java.net/jtreg/command-help.html
646	>	*/
647		protected long getShortDelay() {
648	<	return 50;
648	>	return (long) (50 * delayFactor);
649		}
650
172	–
651		/**
652	<	* Set delays as multiples of SHORT_DELAY.
652	>	* Sets delays as multiples of SHORT_DELAY.
653		*/
654	<	protected  void setDelays() {
654	>	protected void setDelays() {
655		SHORT_DELAY_MS = getShortDelay();
656	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
656	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
657		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
658	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
658	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
659	>	}
660	>
661	>	private static final long TIMEOUT_DELAY_MS
662	>	= (long) (12.0 * Math.cbrt(delayFactor));
663	>
664	>	/**
665	>	* Returns a timeout in milliseconds to be used in tests that verify
666	>	* that operations block or time out.  We want this to be longer
667	>	* than the OS scheduling quantum, but not too long, so don't scale
668	>	* linearly with delayFactor; we use "crazy" cube root instead.
669	>	*/
670	>	static long timeoutMillis() {
671	>	return TIMEOUT_DELAY_MS;
672		}
673
674		/**
675	<	* Flag set true if any threadAssert methods fail
675	>	* Returns a new Date instance representing a time at least
676	>	* delayMillis milliseconds in the future.
677		*/
678	<	volatile boolean threadFailed;
678	>	Date delayedDate(long delayMillis) {
679	>	// Add 1 because currentTimeMillis is known to round into the past.
680	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
681	>	}
682	>
683	>	/**
684	>	* The first exception encountered if any threadAssertXXX method fails.
685	>	*/
686	>	private final AtomicReference<Throwable> threadFailure
687	>	= new AtomicReference<>(null);
688
689		/**
690	<	* Initialize test to indicate that no thread assertions have failed
690	>	* Records an exception so that it can be rethrown later in the test
691	>	* harness thread, triggering a test case failure.  Only the first
692	>	* failure is recorded; subsequent calls to this method from within
693	>	* the same test have no effect.
694		*/
695	<	public void setUp() {
695	>	public void threadRecordFailure(Throwable t) {
696	>	System.err.println(t);
697	>	dumpTestThreads();
698	>	threadFailure.compareAndSet(null, t);
699	>	}
700	>
701	>	public void setUp() {
702		setDelays();
703	<	threadFailed = false;
703	>	}
704	>
705	>	void tearDownFail(String format, Object... args) {
706	>	String msg = toString() + ": " + String.format(format, args);
707	>	System.err.println(msg);
708	>	dumpTestThreads();
709	>	throw new AssertionFailedError(msg);
710	>	}
711	>
712	>	/**
713	>	* Extra checks that get done for all test cases.
714	>	*
715	>	* Triggers test case failure if any thread assertions have failed,
716	>	* by rethrowing, in the test harness thread, any exception recorded
717	>	* earlier by threadRecordFailure.
718	>	*
719	>	* Triggers test case failure if interrupt status is set in the main thread.
720	>	*/
721	>	public void tearDown() throws Exception {
722	>	Throwable t = threadFailure.getAndSet(null);
723	>	if (t != null) {
724	>	if (t instanceof Error)
725	>	throw (Error) t;
726	>	else if (t instanceof RuntimeException)
727	>	throw (RuntimeException) t;
728	>	else if (t instanceof Exception)
729	>	throw (Exception) t;
730	>	else {
731	>	AssertionFailedError afe =
732	>	new AssertionFailedError(t.toString());
733	>	afe.initCause(t);
734	>	throw afe;
735	>	}
736	>	}
737	>
738	>	if (Thread.interrupted())
739	>	tearDownFail("interrupt status set in main thread");
740	>
741	>	checkForkJoinPoolThreadLeaks();
742		}
743
744		/**
745	<	* Trigger test case failure if any thread assertions have failed
745	>	* Finds missing PoolCleaners
746		*/
747	<	public void tearDown() {
748	<	assertFalse(threadFailed);
747	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
748	>	Thread[] survivors = new Thread[7];
749	>	int count = Thread.enumerate(survivors);
750	>	for (int i = 0; i < count; i++) {
751	>	Thread thread = survivors[i];
752	>	String name = thread.getName();
753	>	if (name.startsWith("ForkJoinPool-")) {
754	>	// give thread some time to terminate
755	>	thread.join(LONG_DELAY_MS);
756	>	if (thread.isAlive())
757	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
758	>	thread);
759	>	}
760	>	}
761	>
762	>	if (!ForkJoinPool.commonPool()
763	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
764	>	tearDownFail("ForkJoin common pool thread stuck");
765		}
766
767		/**
768	<	* Fail, also setting status to indicate current testcase should fail
769	<	*/
768	>	* Just like fail(reason), but additionally recording (using
769	>	* threadRecordFailure) any AssertionFailedError thrown, so that
770	>	* the current testcase will fail.
771	>	*/
772		public void threadFail(String reason) {
773	<	threadFailed = true;
774	<	fail(reason);
773	>	try {
774	>	fail(reason);
775	>	} catch (AssertionFailedError t) {
776	>	threadRecordFailure(t);
777	>	throw t;
778	>	}
779		}
780
781		/**
782	<	* If expression not true, set status to indicate current testcase
783	<	* should fail
784	<	*/
782	>	* Just like assertTrue(b), but additionally recording (using
783	>	* threadRecordFailure) any AssertionFailedError thrown, so that
784	>	* the current testcase will fail.
785	>	*/
786		public void threadAssertTrue(boolean b) {
787	<	if (!b) {
217	<	threadFailed = true;
787	>	try {
788		assertTrue(b);
789	+	} catch (AssertionFailedError t) {
790	+	threadRecordFailure(t);
791	+	throw t;
792		}
793		}
794
795		/**
796	<	* If expression not false, set status to indicate current testcase
797	<	* should fail
798	<	*/
796	>	* Just like assertFalse(b), but additionally recording (using
797	>	* threadRecordFailure) any AssertionFailedError thrown, so that
798	>	* the current testcase will fail.
799	>	*/
800		public void threadAssertFalse(boolean b) {
801	<	if (b) {
228	<	threadFailed = true;
801	>	try {
802		assertFalse(b);
803	+	} catch (AssertionFailedError t) {
804	+	threadRecordFailure(t);
805	+	throw t;
806		}
807		}
808
809		/**
810	<	* If argument not null, set status to indicate current testcase
811	<	* should fail
812	<	*/
810	>	* Just like assertNull(x), but additionally recording (using
811	>	* threadRecordFailure) any AssertionFailedError thrown, so that
812	>	* the current testcase will fail.
813	>	*/
814		public void threadAssertNull(Object x) {
815	<	if (x != null) {
239	<	threadFailed = true;
815	>	try {
816		assertNull(x);
817	+	} catch (AssertionFailedError t) {
818	+	threadRecordFailure(t);
819	+	throw t;
820		}
821		}
822
823		/**
824	<	* If arguments not equal, set status to indicate current testcase
825	<	* should fail
826	<	*/
824	>	* Just like assertEquals(x, y), but additionally recording (using
825	>	* threadRecordFailure) any AssertionFailedError thrown, so that
826	>	* the current testcase will fail.
827	>	*/
828		public void threadAssertEquals(long x, long y) {
829	<	if (x != y) {
250	<	threadFailed = true;
829	>	try {
830		assertEquals(x, y);
831	+	} catch (AssertionFailedError t) {
832	+	threadRecordFailure(t);
833	+	throw t;
834		}
835		}
836
837		/**
838	<	* If arguments not equal, set status to indicate current testcase
839	<	* should fail
840	<	*/
838	>	* Just like assertEquals(x, y), but additionally recording (using
839	>	* threadRecordFailure) any AssertionFailedError thrown, so that
840	>	* the current testcase will fail.
841	>	*/
842		public void threadAssertEquals(Object x, Object y) {
843	<	if (x != y && (x == null || !x.equals(y))) {
261	<	threadFailed = true;
843	>	try {
844		assertEquals(x, y);
845	+	} catch (AssertionFailedError fail) {
846	+	threadRecordFailure(fail);
847	+	throw fail;
848	+	} catch (Throwable fail) {
849	+	threadUnexpectedException(fail);
850		}
851		}
852
853		/**
854	<	* threadFail with message "should throw exception"
855	<	*/
854	>	* Just like assertSame(x, y), but additionally recording (using
855	>	* threadRecordFailure) any AssertionFailedError thrown, so that
856	>	* the current testcase will fail.
857	>	*/
858	>	public void threadAssertSame(Object x, Object y) {
859	>	try {
860	>	assertSame(x, y);
861	>	} catch (AssertionFailedError fail) {
862	>	threadRecordFailure(fail);
863	>	throw fail;
864	>	}
865	>	}
866	>
867	>	/**
868	>	* Calls threadFail with message "should throw exception".
869	>	*/
870		public void threadShouldThrow() {
871	<	threadFailed = true;
872	<	fail("should throw exception");
871	>	threadFail("should throw exception");
872	>	}
873	>
874	>	/**
875	>	* Calls threadFail with message "should throw" + exceptionName.
876	>	*/
877	>	public void threadShouldThrow(String exceptionName) {
878	>	threadFail("should throw " + exceptionName);
879		}
880
881		/**
882	<	* threadFail with message "Unexpected exception"
882	>	* Records the given exception using {@link #threadRecordFailure},
883	>	* then rethrows the exception, wrapping it in an
884	>	* AssertionFailedError if necessary.
885		*/
886	<	public void threadUnexpectedException() {
887	<	threadFailed = true;
888	<	fail("Unexpected exception");
886	>	public void threadUnexpectedException(Throwable t) {
887	>	threadRecordFailure(t);
888	>	t.printStackTrace();
889	>	if (t instanceof RuntimeException)
890	>	throw (RuntimeException) t;
891	>	else if (t instanceof Error)
892	>	throw (Error) t;
893	>	else {
894	>	AssertionFailedError afe =
895	>	new AssertionFailedError("unexpected exception: " + t);
896	>	afe.initCause(t);
897	>	throw afe;
898	>	}
899		}
900
901	+	/**
902	+	* Delays, via Thread.sleep, for the given millisecond delay, but
903	+	* if the sleep is shorter than specified, may re-sleep or yield
904	+	* until time elapses.  Ensures that the given time, as measured
905	+	* by System.nanoTime(), has elapsed.
906	+	*/
907	+	static void delay(long millis) throws InterruptedException {
908	+	long nanos = millis * (1000 * 1000);
909	+	final long wakeupTime = System.nanoTime() + nanos;
910	+	do {
911	+	if (millis > 0L)
912	+	Thread.sleep(millis);
913	+	else // too short to sleep
914	+	Thread.yield();
915	+	nanos = wakeupTime - System.nanoTime();
916	+	millis = nanos / (1000 * 1000);
917	+	} while (nanos >= 0L);
918	+	}
919
920		/**
921	<	* Wait out termination of a thread pool or fail doing so
921	>	* Allows use of try-with-resources with per-test thread pools.
922		*/
923	<	public void joinPool(ExecutorService exec) {
923	>	class PoolCleaner implements AutoCloseable {
924	>	private final ExecutorService pool;
925	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
926	>	public void close() { joinPool(pool); }
927	>	}
928	>
929	>	/**
930	>	* An extension of PoolCleaner that has an action to release the pool.
931	>	*/
932	>	class PoolCleanerWithReleaser extends PoolCleaner {
933	>	private final Runnable releaser;
934	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
935	>	super(pool);
936	>	this.releaser = releaser;
937	>	}
938	>	public void close() {
939	>	try {
940	>	releaser.run();
941	>	} finally {
942	>	super.close();
943	>	}
944	>	}
945	>	}
946	>
947	>	PoolCleaner cleaner(ExecutorService pool) {
948	>	return new PoolCleaner(pool);
949	>	}
950	>
951	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
952	>	return new PoolCleanerWithReleaser(pool, releaser);
953	>	}
954	>
955	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
956	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
957	>	}
958	>
959	>	Runnable releaser(final CountDownLatch latch) {
960	>	return new Runnable() { public void run() {
961	>	do { latch.countDown(); }
962	>	while (latch.getCount() > 0);
963	>	}};
964	>	}
965	>
966	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
967	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
968	>	}
969	>
970	>	Runnable releaser(final AtomicBoolean flag) {
971	>	return new Runnable() { public void run() { flag.set(true); }};
972	>	}
973	>
974	>	/**
975	>	* Waits out termination of a thread pool or fails doing so.
976	>	*/
977	>	void joinPool(ExecutorService pool) {
978		try {
979	<	exec.shutdown();
980	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
981	<	} catch(SecurityException ok) {
979	>	pool.shutdown();
980	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
981	>	try {
982	>	threadFail("ExecutorService " + pool +
983	>	" did not terminate in a timely manner");
984	>	} finally {
985	>	// last resort, for the benefit of subsequent tests
986	>	pool.shutdownNow();
987	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
988	>	}
989	>	}
990	>	} catch (SecurityException ok) {
991		// Allowed in case test doesn't have privs
992	<	} catch(InterruptedException ie) {
993	<	fail("Unexpected exception");
992	>	} catch (InterruptedException fail) {
993	>	threadFail("Unexpected InterruptedException");
994		}
995		}
996
997	+	/**
998	+	* Like Runnable, but with the freedom to throw anything.
999	+	* junit folks had the same idea:
1000	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1001	+	*/
1002	+	interface Action { public void run() throws Throwable; }
1003
1004		/**
1005	<	* fail with message "should throw exception"
1006	<	*/
1005	>	* Runs all the given actions in parallel, failing if any fail.
1006	>	* Useful for running multiple variants of tests that are
1007	>	* necessarily individually slow because they must block.
1008	>	*/
1009	>	void testInParallel(Action ... actions) {
1010	>	ExecutorService pool = Executors.newCachedThreadPool();
1011	>	try (PoolCleaner cleaner = cleaner(pool)) {
1012	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1013	>	for (final Action action : actions)
1014	>	futures.add(pool.submit(new CheckedRunnable() {
1015	>	public void realRun() throws Throwable { action.run();}}));
1016	>	for (Future<?> future : futures)
1017	>	try {
1018	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1019	>	} catch (ExecutionException ex) {
1020	>	threadUnexpectedException(ex.getCause());
1021	>	} catch (Exception ex) {
1022	>	threadUnexpectedException(ex);
1023	>	}
1024	>	}
1025	>	}
1026	>
1027	>	/**
1028	>	* A debugging tool to print stack traces of most threads, as jstack does.
1029	>	* Uninteresting threads are filtered out.
1030	>	*/
1031	>	static void dumpTestThreads() {
1032	>	SecurityManager sm = System.getSecurityManager();
1033	>	if (sm != null) {
1034	>	try {
1035	>	System.setSecurityManager(null);
1036	>	} catch (SecurityException giveUp) {
1037	>	return;
1038	>	}
1039	>	}
1040	>
1041	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1042	>	System.err.println("------ stacktrace dump start ------");
1043	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1044	>	final String name = info.getThreadName();
1045	>	String lockName;
1046	>	if ("Signal Dispatcher".equals(name))
1047	>	continue;
1048	>	if ("Reference Handler".equals(name)
1049	>	&& (lockName = info.getLockName()) != null
1050	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1051	>	continue;
1052	>	if ("Finalizer".equals(name)
1053	>	&& (lockName = info.getLockName()) != null
1054	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1055	>	continue;
1056	>	if ("checkForWedgedTest".equals(name))
1057	>	continue;
1058	>	System.err.print(info);
1059	>	}
1060	>	System.err.println("------ stacktrace dump end ------");
1061	>
1062	>	if (sm != null) System.setSecurityManager(sm);
1063	>	}
1064	>
1065	>	/**
1066	>	* Checks that thread does not terminate within the default
1067	>	* millisecond delay of {@code timeoutMillis()}.
1068	>	*/
1069	>	void assertThreadStaysAlive(Thread thread) {
1070	>	assertThreadStaysAlive(thread, timeoutMillis());
1071	>	}
1072	>
1073	>	/**
1074	>	* Checks that thread does not terminate within the given millisecond delay.
1075	>	*/
1076	>	void assertThreadStaysAlive(Thread thread, long millis) {
1077	>	try {
1078	>	// No need to optimize the failing case via Thread.join.
1079	>	delay(millis);
1080	>	assertTrue(thread.isAlive());
1081	>	} catch (InterruptedException fail) {
1082	>	threadFail("Unexpected InterruptedException");
1083	>	}
1084	>	}
1085	>
1086	>	/**
1087	>	* Checks that the threads do not terminate within the default
1088	>	* millisecond delay of {@code timeoutMillis()}.
1089	>	*/
1090	>	void assertThreadsStayAlive(Thread... threads) {
1091	>	assertThreadsStayAlive(timeoutMillis(), threads);
1092	>	}
1093	>
1094	>	/**
1095	>	* Checks that the threads do not terminate within the given millisecond delay.
1096	>	*/
1097	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1098	>	try {
1099	>	// No need to optimize the failing case via Thread.join.
1100	>	delay(millis);
1101	>	for (Thread thread : threads)
1102	>	assertTrue(thread.isAlive());
1103	>	} catch (InterruptedException fail) {
1104	>	threadFail("Unexpected InterruptedException");
1105	>	}
1106	>	}
1107	>
1108	>	/**
1109	>	* Checks that future.get times out, with the default timeout of
1110	>	* {@code timeoutMillis()}.
1111	>	*/
1112	>	void assertFutureTimesOut(Future future) {
1113	>	assertFutureTimesOut(future, timeoutMillis());
1114	>	}
1115	>
1116	>	/**
1117	>	* Checks that future.get times out, with the given millisecond timeout.
1118	>	*/
1119	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
1120	>	long startTime = System.nanoTime();
1121	>	try {
1122	>	future.get(timeoutMillis, MILLISECONDS);
1123	>	shouldThrow();
1124	>	} catch (TimeoutException success) {
1125	>	} catch (Exception fail) {
1126	>	threadUnexpectedException(fail);
1127	>	} finally { future.cancel(true); }
1128	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1129	>	}
1130	>
1131	>	/**
1132	>	* Fails with message "should throw exception".
1133	>	*/
1134		public void shouldThrow() {
1135		fail("Should throw exception");
1136		}
1137
1138		/**
1139	<	* fail with message "Unexpected exception"
1139	>	* Fails with message "should throw " + exceptionName.
1140		*/
1141	<	public void unexpectedException() {
1142	<	fail("Unexpected exception");
1141	>	public void shouldThrow(String exceptionName) {
1142	>	fail("Should throw " + exceptionName);
1143		}
1144
1145	+	/**
1146	+	* The maximum number of consecutive spurious wakeups we should
1147	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1148	+	*/
1149	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1150
1151		/**
1152		* The number of elements to place in collections, arrays, etc.
1153		*/
1154	<	static final int SIZE = 20;
1154	>	public static final int SIZE = 20;
1155
1156		// Some convenient Integer constants
1157
1158	<	static final Integer zero = new Integer(0);
1159	<	static final Integer one = new Integer(1);
1160	<	static final Integer two = new Integer(2);
1161	<	static final Integer three  = new Integer(3);
1162	<	static final Integer four  = new Integer(4);
1163	<	static final Integer five  = new Integer(5);
1164	<	static final Integer six = new Integer(6);
1165	<	static final Integer seven = new Integer(7);
1166	<	static final Integer eight = new Integer(8);
1167	<	static final Integer nine = new Integer(9);
1168	<	static final Integer m1  = new Integer(-1);
1169	<	static final Integer m2  = new Integer(-2);
1170	<	static final Integer m3  = new Integer(-3);
1171	<	static final Integer m4 = new Integer(-4);
1172	<	static final Integer m5 = new Integer(-5);
1173	<	static final Integer m10 = new Integer(-10);
1158	>	public static final Integer zero  = new Integer(0);
1159	>	public static final Integer one   = new Integer(1);
1160	>	public static final Integer two   = new Integer(2);
1161	>	public static final Integer three = new Integer(3);
1162	>	public static final Integer four  = new Integer(4);
1163	>	public static final Integer five  = new Integer(5);
1164	>	public static final Integer six   = new Integer(6);
1165	>	public static final Integer seven = new Integer(7);
1166	>	public static final Integer eight = new Integer(8);
1167	>	public static final Integer nine  = new Integer(9);
1168	>	public static final Integer m1  = new Integer(-1);
1169	>	public static final Integer m2  = new Integer(-2);
1170	>	public static final Integer m3  = new Integer(-3);
1171	>	public static final Integer m4  = new Integer(-4);
1172	>	public static final Integer m5  = new Integer(-5);
1173	>	public static final Integer m6  = new Integer(-6);
1174	>	public static final Integer m10 = new Integer(-10);
1175	>
1176	>	/**
1177	>	* Runs Runnable r with a security policy that permits precisely
1178	>	* the specified permissions.  If there is no current security
1179	>	* manager, the runnable is run twice, both with and without a
1180	>	* security manager.  We require that any security manager permit
1181	>	* getPolicy/setPolicy.
1182	>	*/
1183	>	public void runWithPermissions(Runnable r, Permission... permissions) {
1184	>	SecurityManager sm = System.getSecurityManager();
1185	>	if (sm == null) {
1186	>	r.run();
1187	>	}
1188	>	runWithSecurityManagerWithPermissions(r, permissions);
1189	>	}
1190	>
1191	>	/**
1192	>	* Runs Runnable r with a security policy that permits precisely
1193	>	* the specified permissions.  If there is no current security
1194	>	* manager, a temporary one is set for the duration of the
1195	>	* Runnable.  We require that any security manager permit
1196	>	* getPolicy/setPolicy.
1197	>	*/
1198	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1199	>	Permission... permissions) {
1200	>	SecurityManager sm = System.getSecurityManager();
1201	>	if (sm == null) {
1202	>	Policy savedPolicy = Policy.getPolicy();
1203	>	try {
1204	>	Policy.setPolicy(permissivePolicy());
1205	>	System.setSecurityManager(new SecurityManager());
1206	>	runWithSecurityManagerWithPermissions(r, permissions);
1207	>	} finally {
1208	>	System.setSecurityManager(null);
1209	>	Policy.setPolicy(savedPolicy);
1210	>	}
1211	>	} else {
1212	>	Policy savedPolicy = Policy.getPolicy();
1213	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1214	>	Policy.setPolicy(policy);
1215
1216	+	try {
1217	+	r.run();
1218	+	} finally {
1219	+	policy.addPermission(new SecurityPermission("setPolicy"));
1220	+	Policy.setPolicy(savedPolicy);
1221	+	}
1222	+	}
1223	+	}
1224	+
1225	+	/**
1226	+	* Runs a runnable without any permissions.
1227	+	*/
1228	+	public void runWithoutPermissions(Runnable r) {
1229	+	runWithPermissions(r);
1230	+	}
1231
1232		/**
1233		* A security policy where new permissions can be dynamically added
1234		* or all cleared.
1235		*/
1236	<	static class AdjustablePolicy extends java.security.Policy {
1236	>	public static class AdjustablePolicy extends java.security.Policy {
1237		Permissions perms = new Permissions();
1238	<	AdjustablePolicy() { }
1238	>	AdjustablePolicy(Permission... permissions) {
1239	>	for (Permission permission : permissions)
1240	>	perms.add(permission);
1241	>	}
1242		void addPermission(Permission perm) { perms.add(perm); }
1243		void clearPermissions() { perms = new Permissions(); }
1244	<	public PermissionCollection getPermissions(CodeSource cs) {
1245	<	return perms;
1246	<	}
1247	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
1248	<	return perms;
1249	<	}
1250	<	public boolean implies(ProtectionDomain pd, Permission p) {
1251	<	return perms.implies(p);
1252	<	}
1253	<	public void refresh() {}
1244	>	public PermissionCollection getPermissions(CodeSource cs) {
1245	>	return perms;
1246	>	}
1247	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1248	>	return perms;
1249	>	}
1250	>	public boolean implies(ProtectionDomain pd, Permission p) {
1251	>	return perms.implies(p);
1252	>	}
1253	>	public void refresh() {}
1254	>	public String toString() {
1255	>	List<Permission> ps = new ArrayList<>();
1256	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1257	>	ps.add(e.nextElement());
1258	>	return "AdjustablePolicy with permissions " + ps;
1259	>	}
1260		}
1261
1262	+	/**
1263	+	* Returns a policy containing all the permissions we ever need.
1264	+	*/
1265	+	public static Policy permissivePolicy() {
1266	+	return new AdjustablePolicy
1267	+	// Permissions j.u.c. needs directly
1268	+	(new RuntimePermission("modifyThread"),
1269	+	new RuntimePermission("getClassLoader"),
1270	+	new RuntimePermission("setContextClassLoader"),
1271	+	// Permissions needed to change permissions!
1272	+	new SecurityPermission("getPolicy"),
1273	+	new SecurityPermission("setPolicy"),
1274	+	new RuntimePermission("setSecurityManager"),
1275	+	// Permissions needed by the junit test harness
1276	+	new RuntimePermission("accessDeclaredMembers"),
1277	+	new PropertyPermission("*", "read"),
1278	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
1279	+	}
1280
1281	<	// Some convenient Runnable classes
1281	>	/**
1282	>	* Sleeps until the given time has elapsed.
1283	>	* Throws AssertionFailedError if interrupted.
1284	>	*/
1285	>	static void sleep(long millis) {
1286	>	try {
1287	>	delay(millis);
1288	>	} catch (InterruptedException fail) {
1289	>	AssertionFailedError afe =
1290	>	new AssertionFailedError("Unexpected InterruptedException");
1291	>	afe.initCause(fail);
1292	>	throw afe;
1293	>	}
1294	>	}
1295
1296	<	static class NoOpRunnable implements Runnable {
1297	<	public void run() {}
1296	>	/**
1297	>	* Spin-waits up to the specified number of milliseconds for the given
1298	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1299	>	*/
1300	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1301	>	long startTime = 0L;
1302	>	for (;;) {
1303	>	Thread.State s = thread.getState();
1304	>	if (s == Thread.State.BLOCKED ||
1305	>	s == Thread.State.WAITING ||
1306	>	s == Thread.State.TIMED_WAITING)
1307	>	return;
1308	>	else if (s == Thread.State.TERMINATED)
1309	>	fail("Unexpected thread termination");
1310	>	else if (startTime == 0L)
1311	>	startTime = System.nanoTime();
1312	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1313	>	threadAssertTrue(thread.isAlive());
1314	>	fail("timed out waiting for thread to enter wait state");
1315	>	}
1316	>	Thread.yield();
1317	>	}
1318		}
1319
1320	<	static class NoOpCallable implements Callable {
1321	<	public Object call() { return Boolean.TRUE; }
1320	>	/**
1321	>	* Spin-waits up to the specified number of milliseconds for the given
1322	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1323	>	* and additionally satisfy the given condition.
1324	>	*/
1325	>	void waitForThreadToEnterWaitState(
1326	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1327	>	long startTime = 0L;
1328	>	for (;;) {
1329	>	Thread.State s = thread.getState();
1330	>	if (s == Thread.State.BLOCKED ||
1331	>	s == Thread.State.WAITING ||
1332	>	s == Thread.State.TIMED_WAITING) {
1333	>	try {
1334	>	if (waitingForGodot.call())
1335	>	return;
1336	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1337	>	}
1338	>	else if (s == Thread.State.TERMINATED)
1339	>	fail("Unexpected thread termination");
1340	>	else if (startTime == 0L)
1341	>	startTime = System.nanoTime();
1342	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1343	>	threadAssertTrue(thread.isAlive());
1344	>	fail("timed out waiting for thread to enter wait state");
1345	>	}
1346	>	Thread.yield();
1347	>	}
1348		}
1349
1350	<	static final String TEST_STRING = "a test string";
1350	>	/**
1351	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1352	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1353	>	*/
1354	>	void waitForThreadToEnterWaitState(Thread thread) {
1355	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1356	>	}
1357
1358	<	static class StringTask implements Callable<String> {
1359	<	public String call() { return TEST_STRING; }
1358	>	/**
1359	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1360	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1361	>	* and additionally satisfy the given condition.
1362	>	*/
1363	>	void waitForThreadToEnterWaitState(
1364	>	Thread thread, Callable<Boolean> waitingForGodot) {
1365	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1366		}
1367
1368	<	static class NPETask implements Callable<String> {
1369	<	public String call() { throw new NullPointerException(); }
1368	>	/**
1369	>	* Returns the number of milliseconds since time given by
1370	>	* startNanoTime, which must have been previously returned from a
1371	>	* call to {@link System#nanoTime()}.
1372	>	*/
1373	>	static long millisElapsedSince(long startNanoTime) {
1374	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1375		}
1376
1377	<	static class CallableOne implements Callable<Integer> {
1378	<	public Integer call() { return one; }
1377	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1378	>	//         long startTime = System.nanoTime();
1379	>	//         try {
1380	>	//             r.run();
1381	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1382	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1383	>	//             throw new AssertionFailedError("did not return promptly");
1384	>	//     }
1385	>
1386	>	//     void assertTerminatesPromptly(Runnable r) {
1387	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1388	>	//     }
1389	>
1390	>	/**
1391	>	* Checks that timed f.get() returns the expected value, and does not
1392	>	* wait for the timeout to elapse before returning.
1393	>	*/
1394	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1395	>	long startTime = System.nanoTime();
1396	>	try {
1397	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1398	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1399	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1400	>	throw new AssertionFailedError("timed get did not return promptly");
1401		}
1402
1403	<	class ShortRunnable implements Runnable {
1404	<	public void run() {
1405	<	try {
1406	<	Thread.sleep(SHORT_DELAY_MS);
1407	<	}
1408	<	catch(Exception e) {
1409	<	threadUnexpectedException();
1403	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1404	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1405	>	}
1406	>
1407	>	/**
1408	>	* Returns a new started daemon Thread running the given runnable.
1409	>	*/
1410	>	Thread newStartedThread(Runnable runnable) {
1411	>	Thread t = new Thread(runnable);
1412	>	t.setDaemon(true);
1413	>	t.start();
1414	>	return t;
1415	>	}
1416	>
1417	>	/**
1418	>	* Waits for the specified time (in milliseconds) for the thread
1419	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1420	>	* the thread (in the hope that it may terminate later) and fails.
1421	>	*/
1422	>	void awaitTermination(Thread t, long timeoutMillis) {
1423	>	try {
1424	>	t.join(timeoutMillis);
1425	>	} catch (InterruptedException fail) {
1426	>	threadUnexpectedException(fail);
1427	>	} finally {
1428	>	if (t.getState() != Thread.State.TERMINATED) {
1429	>	t.interrupt();
1430	>	threadFail("timed out waiting for thread to terminate");
1431		}
1432		}
1433		}
1434
1435	<	class ShortInterruptedRunnable implements Runnable {
1436	<	public void run() {
1435	>	/**
1436	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1437	>	* terminate (using {@link Thread#join(long)}), else interrupts
1438	>	* the thread (in the hope that it may terminate later) and fails.
1439	>	*/
1440	>	void awaitTermination(Thread t) {
1441	>	awaitTermination(t, LONG_DELAY_MS);
1442	>	}
1443	>
1444	>	// Some convenient Runnable classes
1445	>
1446	>	public abstract class CheckedRunnable implements Runnable {
1447	>	protected abstract void realRun() throws Throwable;
1448	>
1449	>	public final void run() {
1450		try {
1451	<	Thread.sleep(SHORT_DELAY_MS);
1452	<	threadShouldThrow();
1453	<	}
401	<	catch(InterruptedException success) {
1451	>	realRun();
1452	>	} catch (Throwable fail) {
1453	>	threadUnexpectedException(fail);
1454		}
1455		}
1456		}
1457
1458	<	class SmallRunnable implements Runnable {
1459	<	public void run() {
1458	>	public abstract class RunnableShouldThrow implements Runnable {
1459	>	protected abstract void realRun() throws Throwable;
1460	>
1461	>	final Class<?> exceptionClass;
1462	>
1463	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1464	>	this.exceptionClass = exceptionClass;
1465	>	}
1466	>
1467	>	public final void run() {
1468		try {
1469	<	Thread.sleep(SMALL_DELAY_MS);
1470	<	}
1471	<	catch(Exception e) {
1472	<	threadUnexpectedException();
1469	>	realRun();
1470	>	threadShouldThrow(exceptionClass.getSimpleName());
1471	>	} catch (Throwable t) {
1472	>	if (! exceptionClass.isInstance(t))
1473	>	threadUnexpectedException(t);
1474		}
1475		}
1476		}
1477
1478	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1479	<	public void run() {
1478	>	public abstract class ThreadShouldThrow extends Thread {
1479	>	protected abstract void realRun() throws Throwable;
1480	>
1481	>	final Class<?> exceptionClass;
1482	>
1483	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1484	>	this.exceptionClass = exceptionClass;
1485	>	}
1486	>
1487	>	public final void run() {
1488		try {
1489	<	Thread.sleep(SMALL_DELAY_MS);
1490	<	}
1491	<	catch(Exception e) {
1489	>	realRun();
1490	>	threadShouldThrow(exceptionClass.getSimpleName());
1491	>	} catch (Throwable t) {
1492	>	if (! exceptionClass.isInstance(t))
1493	>	threadUnexpectedException(t);
1494		}
1495		}
1496		}
1497
1498	<	class SmallCallable implements Callable {
1499	<	public Object call() {
1498	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1499	>	protected abstract void realRun() throws Throwable;
1500	>
1501	>	public final void run() {
1502		try {
1503	<	Thread.sleep(SMALL_DELAY_MS);
1503	>	realRun();
1504	>	threadShouldThrow("InterruptedException");
1505	>	} catch (InterruptedException success) {
1506	>	threadAssertFalse(Thread.interrupted());
1507	>	} catch (Throwable fail) {
1508	>	threadUnexpectedException(fail);
1509		}
432	–	catch(Exception e) {
433	–	threadUnexpectedException();
434	–	}
435	–	return Boolean.TRUE;
1510		}
1511		}
1512
1513	<	class SmallInterruptedRunnable implements Runnable {
1514	<	public void run() {
1513	>	public abstract class CheckedCallable<T> implements Callable<T> {
1514	>	protected abstract T realCall() throws Throwable;
1515	>
1516	>	public final T call() {
1517		try {
1518	<	Thread.sleep(SMALL_DELAY_MS);
1519	<	threadShouldThrow();
1520	<	}
1521	<	catch(InterruptedException success) {
1518	>	return realCall();
1519	>	} catch (Throwable fail) {
1520	>	threadUnexpectedException(fail);
1521	>	return null;
1522		}
1523		}
1524		}
1525
1526	+	public abstract class CheckedInterruptedCallable<T>
1527	+	implements Callable<T> {
1528	+	protected abstract T realCall() throws Throwable;
1529
1530	<	class MediumRunnable implements Runnable {
452	<	public void run() {
1530	>	public final T call() {
1531		try {
1532	<	Thread.sleep(MEDIUM_DELAY_MS);
1533	<	}
1534	<	catch(Exception e) {
1535	<	threadUnexpectedException();
1532	>	T result = realCall();
1533	>	threadShouldThrow("InterruptedException");
1534	>	return result;
1535	>	} catch (InterruptedException success) {
1536	>	threadAssertFalse(Thread.interrupted());
1537	>	} catch (Throwable fail) {
1538	>	threadUnexpectedException(fail);
1539		}
1540	+	return null;
1541		}
1542		}
1543
1544	<	class MediumInterruptedRunnable implements Runnable {
1545	<	public void run() {
1544	>	public static class NoOpRunnable implements Runnable {
1545	>	public void run() {}
1546	>	}
1547	>
1548	>	public static class NoOpCallable implements Callable {
1549	>	public Object call() { return Boolean.TRUE; }
1550	>	}
1551	>
1552	>	public static final String TEST_STRING = "a test string";
1553	>
1554	>	public static class StringTask implements Callable<String> {
1555	>	final String value;
1556	>	public StringTask() { this(TEST_STRING); }
1557	>	public StringTask(String value) { this.value = value; }
1558	>	public String call() { return value; }
1559	>	}
1560	>
1561	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1562	>	return new CheckedCallable<String>() {
1563	>	protected String realCall() {
1564	>	try {
1565	>	latch.await();
1566	>	} catch (InterruptedException quittingTime) {}
1567	>	return TEST_STRING;
1568	>	}};
1569	>	}
1570	>
1571	>	public Runnable countDowner(final CountDownLatch latch) {
1572	>	return new CheckedRunnable() {
1573	>	public void realRun() throws InterruptedException {
1574	>	latch.countDown();
1575	>	}};
1576	>	}
1577	>
1578	>	class LatchAwaiter extends CheckedRunnable {
1579	>	static final int NEW = 0;
1580	>	static final int RUNNING = 1;
1581	>	static final int DONE = 2;
1582	>	final CountDownLatch latch;
1583	>	int state = NEW;
1584	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1585	>	public void realRun() throws InterruptedException {
1586	>	state = 1;
1587	>	await(latch);
1588	>	state = 2;
1589	>	}
1590	>	}
1591	>
1592	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1593	>	return new LatchAwaiter(latch);
1594	>	}
1595	>
1596	>	public void await(CountDownLatch latch, long timeoutMillis) {
1597	>	try {
1598	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1599	>	fail("timed out waiting for CountDownLatch for "
1600	>	+ (timeoutMillis/1000) + " sec");
1601	>	} catch (Throwable fail) {
1602	>	threadUnexpectedException(fail);
1603	>	}
1604	>	}
1605	>
1606	>	public void await(CountDownLatch latch) {
1607	>	await(latch, LONG_DELAY_MS);
1608	>	}
1609	>
1610	>	public void await(Semaphore semaphore) {
1611	>	try {
1612	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1613	>	fail("timed out waiting for Semaphore for "
1614	>	+ (LONG_DELAY_MS/1000) + " sec");
1615	>	} catch (Throwable fail) {
1616	>	threadUnexpectedException(fail);
1617	>	}
1618	>	}
1619	>
1620	>	//     /**
1621	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1622	>	//      */
1623	>	//     public void await(AtomicBoolean flag) {
1624	>	//         await(flag, LONG_DELAY_MS);
1625	>	//     }
1626	>
1627	>	//     /**
1628	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1629	>	//      */
1630	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1631	>	//         long startTime = System.nanoTime();
1632	>	//         while (!flag.get()) {
1633	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1634	>	//                 throw new AssertionFailedError("timed out");
1635	>	//             Thread.yield();
1636	>	//         }
1637	>	//     }
1638	>
1639	>	public static class NPETask implements Callable<String> {
1640	>	public String call() { throw new NullPointerException(); }
1641	>	}
1642	>
1643	>	public static class CallableOne implements Callable<Integer> {
1644	>	public Integer call() { return one; }
1645	>	}
1646	>
1647	>	public class ShortRunnable extends CheckedRunnable {
1648	>	protected void realRun() throws Throwable {
1649	>	delay(SHORT_DELAY_MS);
1650	>	}
1651	>	}
1652	>
1653	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1654	>	protected void realRun() throws InterruptedException {
1655	>	delay(SHORT_DELAY_MS);
1656	>	}
1657	>	}
1658	>
1659	>	public class SmallRunnable extends CheckedRunnable {
1660	>	protected void realRun() throws Throwable {
1661	>	delay(SMALL_DELAY_MS);
1662	>	}
1663	>	}
1664	>
1665	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1666	>	protected void realRun() {
1667		try {
1668	<	Thread.sleep(MEDIUM_DELAY_MS);
1669	<	threadShouldThrow();
467	<	}
468	<	catch(InterruptedException success) {
469	<	}
1668	>	delay(SMALL_DELAY_MS);
1669	>	} catch (InterruptedException ok) {}
1670		}
1671		}
1672
1673	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1674	<	public void run() {
1673	>	public class SmallCallable extends CheckedCallable {
1674	>	protected Object realCall() throws InterruptedException {
1675	>	delay(SMALL_DELAY_MS);
1676	>	return Boolean.TRUE;
1677	>	}
1678	>	}
1679	>
1680	>	public class MediumRunnable extends CheckedRunnable {
1681	>	protected void realRun() throws Throwable {
1682	>	delay(MEDIUM_DELAY_MS);
1683	>	}
1684	>	}
1685	>
1686	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1687	>	protected void realRun() throws InterruptedException {
1688	>	delay(MEDIUM_DELAY_MS);
1689	>	}
1690	>	}
1691	>
1692	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1693	>	return new CheckedRunnable() {
1694	>	protected void realRun() {
1695	>	try {
1696	>	delay(timeoutMillis);
1697	>	} catch (InterruptedException ok) {}
1698	>	}};
1699	>	}
1700	>
1701	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1702	>	protected void realRun() {
1703		try {
1704	<	Thread.sleep(MEDIUM_DELAY_MS);
1705	<	}
478	<	catch(InterruptedException success) {
479	<	}
1704	>	delay(MEDIUM_DELAY_MS);
1705	>	} catch (InterruptedException ok) {}
1706		}
1707		}
1708
1709	<	class LongPossiblyInterruptedRunnable implements Runnable {
1710	<	public void run() {
1709	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1710	>	protected void realRun() {
1711		try {
1712	<	Thread.sleep(LONG_DELAY_MS);
1713	<	}
488	<	catch(InterruptedException success) {
489	<	}
1712	>	delay(LONG_DELAY_MS);
1713	>	} catch (InterruptedException ok) {}
1714		}
1715		}
1716
1717		/**
1718		* For use as ThreadFactory in constructors
1719		*/
1720	<	static class SimpleThreadFactory implements ThreadFactory{
1721	<	public Thread newThread(Runnable r){
1720	>	public static class SimpleThreadFactory implements ThreadFactory {
1721	>	public Thread newThread(Runnable r) {
1722		return new Thread(r);
1723	<	}
1723	>	}
1724	>	}
1725	>
1726	>	public interface TrackedRunnable extends Runnable {
1727	>	boolean isDone();
1728		}
1729
1730	<	static class TrackedShortRunnable implements Runnable {
1731	<	volatile boolean done = false;
1730	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1731	>	return new TrackedRunnable() {
1732	>	private volatile boolean done = false;
1733	>	public boolean isDone() { return done; }
1734	>	public void run() {
1735	>	try {
1736	>	delay(timeoutMillis);
1737	>	done = true;
1738	>	} catch (InterruptedException ok) {}
1739	>	}
1740	>	};
1741	>	}
1742	>
1743	>	public static class TrackedShortRunnable implements Runnable {
1744	>	public volatile boolean done = false;
1745		public void run() {
1746		try {
1747	<	Thread.sleep(SMALL_DELAY_MS);
1747	>	delay(SHORT_DELAY_MS);
1748		done = true;
1749	<	} catch(Exception e){
509	<	}
1749	>	} catch (InterruptedException ok) {}
1750		}
1751		}
1752
1753	<	static class TrackedMediumRunnable implements Runnable {
1754	<	volatile boolean done = false;
1753	>	public static class TrackedSmallRunnable implements Runnable {
1754	>	public volatile boolean done = false;
1755		public void run() {
1756		try {
1757	<	Thread.sleep(MEDIUM_DELAY_MS);
1757	>	delay(SMALL_DELAY_MS);
1758		done = true;
1759	<	} catch(Exception e){
520	<	}
1759	>	} catch (InterruptedException ok) {}
1760		}
1761		}
1762
1763	<	static class TrackedLongRunnable implements Runnable {
1764	<	volatile boolean done = false;
1763	>	public static class TrackedMediumRunnable implements Runnable {
1764	>	public volatile boolean done = false;
1765		public void run() {
1766		try {
1767	<	Thread.sleep(LONG_DELAY_MS);
1767	>	delay(MEDIUM_DELAY_MS);
1768		done = true;
1769	<	} catch(Exception e){
1770	<	}
1769	>	} catch (InterruptedException ok) {}
1770	>	}
1771	>	}
1772	>
1773	>	public static class TrackedLongRunnable implements Runnable {
1774	>	public volatile boolean done = false;
1775	>	public void run() {
1776	>	try {
1777	>	delay(LONG_DELAY_MS);
1778	>	done = true;
1779	>	} catch (InterruptedException ok) {}
1780		}
1781		}
1782
1783	<	static class TrackedNoOpRunnable implements Runnable {
1784	<	volatile boolean done = false;
1783	>	public static class TrackedNoOpRunnable implements Runnable {
1784	>	public volatile boolean done = false;
1785		public void run() {
1786		done = true;
1787		}
1788		}
1789
1790	<	static class TrackedCallable implements Callable {
1791	<	volatile boolean done = false;
1790	>	public static class TrackedCallable implements Callable {
1791	>	public volatile boolean done = false;
1792		public Object call() {
1793		try {
1794	<	Thread.sleep(SMALL_DELAY_MS);
1794	>	delay(SMALL_DELAY_MS);
1795		done = true;
1796	<	} catch(Exception e){
549	<	}
1796	>	} catch (InterruptedException ok) {}
1797		return Boolean.TRUE;
1798		}
1799		}
1800
1801	+	/**
1802	+	* Analog of CheckedRunnable for RecursiveAction
1803	+	*/
1804	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1805	+	protected abstract void realCompute() throws Throwable;
1806	+
1807	+	@Override protected final void compute() {
1808	+	try {
1809	+	realCompute();
1810	+	} catch (Throwable fail) {
1811	+	threadUnexpectedException(fail);
1812	+	}
1813	+	}
1814	+	}
1815	+
1816	+	/**
1817	+	* Analog of CheckedCallable for RecursiveTask
1818	+	*/
1819	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1820	+	protected abstract T realCompute() throws Throwable;
1821	+
1822	+	@Override protected final T compute() {
1823	+	try {
1824	+	return realCompute();
1825	+	} catch (Throwable fail) {
1826	+	threadUnexpectedException(fail);
1827	+	return null;
1828	+	}
1829	+	}
1830	+	}
1831
1832		/**
1833		* For use as RejectedExecutionHandler in constructors
1834		*/
1835	<	static class NoOpREHandler implements RejectedExecutionHandler{
1836	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1835	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1836	>	public void rejectedExecution(Runnable r,
1837	>	ThreadPoolExecutor executor) {}
1838	>	}
1839	>
1840	>	/**
1841	>	* A CyclicBarrier that uses timed await and fails with
1842	>	* AssertionFailedErrors instead of throwing checked exceptions.
1843	>	*/
1844	>	public static class CheckedBarrier extends CyclicBarrier {
1845	>	public CheckedBarrier(int parties) { super(parties); }
1846	>
1847	>	public int await() {
1848	>	try {
1849	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1850	>	} catch (TimeoutException timedOut) {
1851	>	throw new AssertionFailedError("timed out");
1852	>	} catch (Exception fail) {
1853	>	AssertionFailedError afe =
1854	>	new AssertionFailedError("Unexpected exception: " + fail);
1855	>	afe.initCause(fail);
1856	>	throw afe;
1857	>	}
1858	>	}
1859	>	}
1860	>
1861	>	void checkEmpty(BlockingQueue q) {
1862	>	try {
1863	>	assertTrue(q.isEmpty());
1864	>	assertEquals(0, q.size());
1865	>	assertNull(q.peek());
1866	>	assertNull(q.poll());
1867	>	assertNull(q.poll(0, MILLISECONDS));
1868	>	assertEquals(q.toString(), "[]");
1869	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1870	>	assertFalse(q.iterator().hasNext());
1871	>	try {
1872	>	q.element();
1873	>	shouldThrow();
1874	>	} catch (NoSuchElementException success) {}
1875	>	try {
1876	>	q.iterator().next();
1877	>	shouldThrow();
1878	>	} catch (NoSuchElementException success) {}
1879	>	try {
1880	>	q.remove();
1881	>	shouldThrow();
1882	>	} catch (NoSuchElementException success) {}
1883	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1884	>	}
1885	>
1886	>	void assertSerialEquals(Object x, Object y) {
1887	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1888	>	}
1889	>
1890	>	void assertNotSerialEquals(Object x, Object y) {
1891	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1892	>	}
1893	>
1894	>	byte[] serialBytes(Object o) {
1895	>	try {
1896	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1897	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1898	>	oos.writeObject(o);
1899	>	oos.flush();
1900	>	oos.close();
1901	>	return bos.toByteArray();
1902	>	} catch (Throwable fail) {
1903	>	threadUnexpectedException(fail);
1904	>	return new byte[0];
1905	>	}
1906	>	}
1907	>
1908	>	void assertImmutable(final Object o) {
1909	>	if (o instanceof Collection) {
1910	>	assertThrows(
1911	>	UnsupportedOperationException.class,
1912	>	new Runnable() { public void run() {
1913	>	((Collection) o).add(null);}});
1914	>	}
1915	>	}
1916	>
1917	>	@SuppressWarnings("unchecked")
1918	>	<T> T serialClone(T o) {
1919	>	try {
1920	>	ObjectInputStream ois = new ObjectInputStream
1921	>	(new ByteArrayInputStream(serialBytes(o)));
1922	>	T clone = (T) ois.readObject();
1923	>	if (o == clone) assertImmutable(o);
1924	>	assertSame(o.getClass(), clone.getClass());
1925	>	return clone;
1926	>	} catch (Throwable fail) {
1927	>	threadUnexpectedException(fail);
1928	>	return null;
1929	>	}
1930	>	}
1931	>
1932	>	/**
1933	>	* A version of serialClone that leaves error handling (for
1934	>	* e.g. NotSerializableException) up to the caller.
1935	>	*/
1936	>	@SuppressWarnings("unchecked")
1937	>	<T> T serialClonePossiblyFailing(T o)
1938	>	throws ReflectiveOperationException, java.io.IOException {
1939	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1940	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1941	>	oos.writeObject(o);
1942	>	oos.flush();
1943	>	oos.close();
1944	>	ObjectInputStream ois = new ObjectInputStream
1945	>	(new ByteArrayInputStream(bos.toByteArray()));
1946	>	T clone = (T) ois.readObject();
1947	>	if (o == clone) assertImmutable(o);
1948	>	assertSame(o.getClass(), clone.getClass());
1949	>	return clone;
1950	>	}
1951	>
1952	>	/**
1953	>	* If o implements Cloneable and has a public clone method,
1954	>	* returns a clone of o, else null.
1955	>	*/
1956	>	@SuppressWarnings("unchecked")
1957	>	<T> T cloneableClone(T o) {
1958	>	if (!(o instanceof Cloneable)) return null;
1959	>	final T clone;
1960	>	try {
1961	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1962	>	} catch (NoSuchMethodException ok) {
1963	>	return null;
1964	>	} catch (ReflectiveOperationException unexpected) {
1965	>	throw new Error(unexpected);
1966	>	}
1967	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1968	>	assertSame(o.getClass(), clone.getClass());
1969	>	return clone;
1970	>	}
1971	>
1972	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1973	>	Runnable... throwingActions) {
1974	>	for (Runnable throwingAction : throwingActions) {
1975	>	boolean threw = false;
1976	>	try { throwingAction.run(); }
1977	>	catch (Throwable t) {
1978	>	threw = true;
1979	>	if (!expectedExceptionClass.isInstance(t)) {
1980	>	AssertionFailedError afe =
1981	>	new AssertionFailedError
1982	>	("Expected " + expectedExceptionClass.getName() +
1983	>	", got " + t.getClass().getName());
1984	>	afe.initCause(t);
1985	>	threadUnexpectedException(afe);
1986	>	}
1987	>	}
1988	>	if (!threw)
1989	>	shouldThrow(expectedExceptionClass.getName());
1990	>	}
1991	>	}
1992	>
1993	>	public void assertIteratorExhausted(Iterator<?> it) {
1994	>	try {
1995	>	it.next();
1996	>	shouldThrow();
1997	>	} catch (NoSuchElementException success) {}
1998	>	assertFalse(it.hasNext());
1999	>	}
2000	>
2001	>	public <T> Callable<T> callableThrowing(final Exception ex) {
2002	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
2003	>	}
2004	>
2005	>	public Runnable runnableThrowing(final RuntimeException ex) {
2006	>	return new Runnable() { public void run() { throw ex; }};
2007	>	}
2008	>
2009	>	/** A reusable thread pool to be shared by tests. */
2010	>	static final ExecutorService cachedThreadPool =
2011	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
2012	>	1000L, MILLISECONDS,
2013	>	new SynchronousQueue<Runnable>());
2014	>
2015	>	static <T> void shuffle(T[] array) {
2016	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2017		}
561	–
562	–
2018		}

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