1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
10 |
import java.io.ByteArrayInputStream; |
11 |
import java.io.ByteArrayOutputStream; |
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import java.io.ObjectInputStream; |
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import java.io.ObjectOutputStream; |
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import java.lang.management.ManagementFactory; |
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import java.lang.management.ThreadInfo; |
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import java.lang.reflect.Method; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Date; |
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import java.util.Enumeration; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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import java.util.PropertyPermission; |
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import java.util.concurrent.*; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.atomic.AtomicReference; |
27 |
import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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import java.security.CodeSource; |
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import java.security.Permission; |
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import java.security.PermissionCollection; |
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import java.security.Permissions; |
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import java.security.Policy; |
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import java.security.ProtectionDomain; |
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import java.security.SecurityPermission; |
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|
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/** |
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* Base class for JSR166 Junit TCK tests. Defines some constants, |
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* utility methods and classes, as well as a simple framework for |
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* helping to make sure that assertions failing in generated threads |
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* cause the associated test that generated them to itself fail (which |
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* JUnit does not otherwise arrange). The rules for creating such |
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* tests are: |
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* |
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* <ol> |
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* |
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* <li> All assertions in code running in generated threads must use |
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* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link |
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* #threadAssertEquals}, or {@link #threadAssertNull}, (not |
50 |
* {@code fail}, {@code assertTrue}, etc.) It is OK (but not |
51 |
* particularly recommended) for other code to use these forms too. |
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* Only the most typically used JUnit assertion methods are defined |
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* this way, but enough to live with.</li> |
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* |
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* <li> If you override {@link #setUp} or {@link #tearDown}, make sure |
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* to invoke {@code super.setUp} and {@code super.tearDown} within |
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* them. These methods are used to clear and check for thread |
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* assertion failures.</li> |
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* |
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* <li>All delays and timeouts must use one of the constants {@code |
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* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS}, |
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* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always |
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* discriminable from zero time, and always allows enough time for the |
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* small amounts of computation (creating a thread, calling a few |
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* methods, etc) needed to reach a timeout point. Similarly, a SMALL |
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* is always discriminable as larger than SHORT and smaller than |
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* MEDIUM. And so on. These constants are set to conservative values, |
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* but even so, if there is ever any doubt, they can all be increased |
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* in one spot to rerun tests on slower platforms.</li> |
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* |
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* <li> All threads generated must be joined inside each test case |
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* method (or {@code fail} to do so) before returning from the |
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* method. The {@code joinPool} method can be used to do this when |
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* using Executors.</li> |
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* |
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* </ol> |
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* |
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* <p><b>Other notes</b> |
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* <ul> |
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* |
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* <li> Usually, there is one testcase method per JSR166 method |
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* covering "normal" operation, and then as many exception-testing |
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* methods as there are exceptions the method can throw. Sometimes |
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* there are multiple tests per JSR166 method when the different |
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* "normal" behaviors differ significantly. And sometimes testcases |
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* cover multiple methods when they cannot be tested in |
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* isolation.</li> |
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* |
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* <li> The documentation style for testcases is to provide as javadoc |
90 |
* a simple sentence or two describing the property that the testcase |
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* method purports to test. The javadocs do not say anything about how |
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* the property is tested. To find out, read the code.</li> |
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* |
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* <li> These tests are "conformance tests", and do not attempt to |
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* test throughput, latency, scalability or other performance factors |
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* (see the separate "jtreg" tests for a set intended to check these |
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* for the most central aspects of functionality.) So, most tests use |
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* the smallest sensible numbers of threads, collection sizes, etc |
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* needed to check basic conformance.</li> |
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* |
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* <li>The test classes currently do not declare inclusion in |
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* any particular package to simplify things for people integrating |
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* them in TCK test suites.</li> |
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* |
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* <li> As a convenience, the {@code main} of this class (JSR166TestCase) |
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* runs all JSR166 unit tests.</li> |
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* |
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* </ul> |
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*/ |
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public class JSR166TestCase extends TestCase { |
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private static final boolean useSecurityManager = |
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Boolean.getBoolean("jsr166.useSecurityManager"); |
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|
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protected static final boolean expensiveTests = |
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Boolean.getBoolean("jsr166.expensiveTests"); |
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|
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/** |
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* If true, report on stdout all "slow" tests, that is, ones that |
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* take more than profileThreshold milliseconds to execute. |
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*/ |
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private static final boolean profileTests = |
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Boolean.getBoolean("jsr166.profileTests"); |
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|
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/** |
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* The number of milliseconds that tests are permitted for |
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* execution without being reported, when profileTests is set. |
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*/ |
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private static final long profileThreshold = |
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Long.getLong("jsr166.profileThreshold", 100); |
130 |
|
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/** |
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* The number of repetitions per test (for tickling rare bugs). |
133 |
*/ |
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private static final int runsPerTest = |
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Integer.getInteger("jsr166.runsPerTest", 1); |
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|
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protected void runTest() throws Throwable { |
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for (int i = 0; i < runsPerTest; i++) { |
139 |
if (profileTests) |
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runTestProfiled(); |
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else |
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super.runTest(); |
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} |
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} |
145 |
|
146 |
protected void runTestProfiled() throws Throwable { |
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long t0 = System.nanoTime(); |
148 |
try { |
149 |
super.runTest(); |
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} finally { |
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long elapsedMillis = |
152 |
(System.nanoTime() - t0) / (1000L * 1000L); |
153 |
if (elapsedMillis >= profileThreshold) |
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System.out.printf("%n%s: %d%n", toString(), elapsedMillis); |
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} |
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} |
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|
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/** |
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* Runs all JSR166 unit tests using junit.textui.TestRunner. |
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* Optional command line arg provides the number of iterations to |
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* repeat running the tests. |
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*/ |
163 |
public static void main(String[] args) { |
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if (useSecurityManager) { |
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System.err.println("Setting a permissive security manager"); |
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Policy.setPolicy(permissivePolicy()); |
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System.setSecurityManager(new SecurityManager()); |
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} |
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int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]); |
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|
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Test s = suite(); |
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for (int i = 0; i < iters; ++i) { |
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junit.textui.TestRunner.run(s); |
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System.gc(); |
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System.runFinalization(); |
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} |
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System.exit(0); |
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} |
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|
180 |
public static TestSuite newTestSuite(Object... suiteOrClasses) { |
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TestSuite suite = new TestSuite(); |
182 |
for (Object suiteOrClass : suiteOrClasses) { |
183 |
if (suiteOrClass instanceof TestSuite) |
184 |
suite.addTest((TestSuite) suiteOrClass); |
185 |
else if (suiteOrClass instanceof Class) |
186 |
suite.addTest(new TestSuite((Class<?>) suiteOrClass)); |
187 |
else |
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throw new ClassCastException("not a test suite or class"); |
189 |
} |
190 |
return suite; |
191 |
} |
192 |
|
193 |
public static void addNamedTestClasses(TestSuite suite, |
194 |
String... testClassNames) { |
195 |
for (String testClassName : testClassNames) { |
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try { |
197 |
Class<?> testClass = Class.forName(testClassName); |
198 |
Method m = testClass.getDeclaredMethod("suite", |
199 |
new Class<?>[0]); |
200 |
suite.addTest(newTestSuite((Test)m.invoke(null))); |
201 |
} catch (Exception e) { |
202 |
throw new Error("Missing test class", e); |
203 |
} |
204 |
} |
205 |
} |
206 |
|
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public static final double JAVA_CLASS_VERSION; |
208 |
static { |
209 |
try { |
210 |
JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged( |
211 |
new java.security.PrivilegedAction<Double>() { |
212 |
public Double run() { |
213 |
return Double.valueOf(System.getProperty("java.class.version"));}}); |
214 |
} catch (Throwable t) { |
215 |
throw new Error(t); |
216 |
} |
217 |
} |
218 |
|
219 |
public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; } |
220 |
public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; } |
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public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; } |
222 |
|
223 |
/** |
224 |
* Collects all JSR166 unit tests as one suite. |
225 |
*/ |
226 |
public static Test suite() { |
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// Java7+ test classes |
228 |
TestSuite suite = newTestSuite( |
229 |
ForkJoinPoolTest.suite(), |
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ForkJoinTaskTest.suite(), |
231 |
RecursiveActionTest.suite(), |
232 |
RecursiveTaskTest.suite(), |
233 |
LinkedTransferQueueTest.suite(), |
234 |
PhaserTest.suite(), |
235 |
ThreadLocalRandomTest.suite(), |
236 |
AbstractExecutorServiceTest.suite(), |
237 |
AbstractQueueTest.suite(), |
238 |
AbstractQueuedSynchronizerTest.suite(), |
239 |
AbstractQueuedLongSynchronizerTest.suite(), |
240 |
ArrayBlockingQueueTest.suite(), |
241 |
ArrayDequeTest.suite(), |
242 |
AtomicBooleanTest.suite(), |
243 |
AtomicIntegerArrayTest.suite(), |
244 |
AtomicIntegerFieldUpdaterTest.suite(), |
245 |
AtomicIntegerTest.suite(), |
246 |
AtomicLongArrayTest.suite(), |
247 |
AtomicLongFieldUpdaterTest.suite(), |
248 |
AtomicLongTest.suite(), |
249 |
AtomicMarkableReferenceTest.suite(), |
250 |
AtomicReferenceArrayTest.suite(), |
251 |
AtomicReferenceFieldUpdaterTest.suite(), |
252 |
AtomicReferenceTest.suite(), |
253 |
AtomicStampedReferenceTest.suite(), |
254 |
ConcurrentHashMapTest.suite(), |
255 |
ConcurrentLinkedDequeTest.suite(), |
256 |
ConcurrentLinkedQueueTest.suite(), |
257 |
ConcurrentSkipListMapTest.suite(), |
258 |
ConcurrentSkipListSubMapTest.suite(), |
259 |
ConcurrentSkipListSetTest.suite(), |
260 |
ConcurrentSkipListSubSetTest.suite(), |
261 |
CopyOnWriteArrayListTest.suite(), |
262 |
CopyOnWriteArraySetTest.suite(), |
263 |
CountDownLatchTest.suite(), |
264 |
CyclicBarrierTest.suite(), |
265 |
DelayQueueTest.suite(), |
266 |
EntryTest.suite(), |
267 |
ExchangerTest.suite(), |
268 |
ExecutorsTest.suite(), |
269 |
ExecutorCompletionServiceTest.suite(), |
270 |
FutureTaskTest.suite(), |
271 |
LinkedBlockingDequeTest.suite(), |
272 |
LinkedBlockingQueueTest.suite(), |
273 |
LinkedListTest.suite(), |
274 |
LockSupportTest.suite(), |
275 |
PriorityBlockingQueueTest.suite(), |
276 |
PriorityQueueTest.suite(), |
277 |
ReentrantLockTest.suite(), |
278 |
ReentrantReadWriteLockTest.suite(), |
279 |
ScheduledExecutorTest.suite(), |
280 |
ScheduledExecutorSubclassTest.suite(), |
281 |
SemaphoreTest.suite(), |
282 |
SynchronousQueueTest.suite(), |
283 |
SystemTest.suite(), |
284 |
ThreadLocalTest.suite(), |
285 |
ThreadPoolExecutorTest.suite(), |
286 |
ThreadPoolExecutorSubclassTest.suite(), |
287 |
ThreadTest.suite(), |
288 |
TimeUnitTest.suite(), |
289 |
TreeMapTest.suite(), |
290 |
TreeSetTest.suite(), |
291 |
TreeSubMapTest.suite(), |
292 |
TreeSubSetTest.suite()); |
293 |
|
294 |
// Java8+ test classes |
295 |
if (atLeastJava8()) { |
296 |
String[] java8TestClassNames = { |
297 |
"CompletableFutureTest", |
298 |
"ConcurrentHashMap8Test", |
299 |
"CountedCompleterTest", |
300 |
"DoubleAccumulatorTest", |
301 |
"DoubleAdderTest", |
302 |
"ForkJoinPool8Test", |
303 |
"ForkJoinTask8Test", |
304 |
"LongAccumulatorTest", |
305 |
"LongAdderTest", |
306 |
"SplittableRandomTest", |
307 |
"StampedLockTest", |
308 |
}; |
309 |
addNamedTestClasses(suite, java8TestClassNames); |
310 |
} |
311 |
|
312 |
return suite; |
313 |
} |
314 |
|
315 |
// Delays for timing-dependent tests, in milliseconds. |
316 |
|
317 |
public static long SHORT_DELAY_MS; |
318 |
public static long SMALL_DELAY_MS; |
319 |
public static long MEDIUM_DELAY_MS; |
320 |
public static long LONG_DELAY_MS; |
321 |
|
322 |
/** |
323 |
* Returns the shortest timed delay. This could |
324 |
* be reimplemented to use for example a Property. |
325 |
*/ |
326 |
protected long getShortDelay() { |
327 |
return 50; |
328 |
} |
329 |
|
330 |
/** |
331 |
* Sets delays as multiples of SHORT_DELAY. |
332 |
*/ |
333 |
protected void setDelays() { |
334 |
SHORT_DELAY_MS = getShortDelay(); |
335 |
SMALL_DELAY_MS = SHORT_DELAY_MS * 5; |
336 |
MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10; |
337 |
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
338 |
} |
339 |
|
340 |
/** |
341 |
* Returns a timeout in milliseconds to be used in tests that |
342 |
* verify that operations block or time out. |
343 |
*/ |
344 |
long timeoutMillis() { |
345 |
return SHORT_DELAY_MS / 4; |
346 |
} |
347 |
|
348 |
/** |
349 |
* Returns a new Date instance representing a time delayMillis |
350 |
* milliseconds in the future. |
351 |
*/ |
352 |
Date delayedDate(long delayMillis) { |
353 |
return new Date(System.currentTimeMillis() + delayMillis); |
354 |
} |
355 |
|
356 |
/** |
357 |
* The first exception encountered if any threadAssertXXX method fails. |
358 |
*/ |
359 |
private final AtomicReference<Throwable> threadFailure |
360 |
= new AtomicReference<Throwable>(null); |
361 |
|
362 |
/** |
363 |
* Records an exception so that it can be rethrown later in the test |
364 |
* harness thread, triggering a test case failure. Only the first |
365 |
* failure is recorded; subsequent calls to this method from within |
366 |
* the same test have no effect. |
367 |
*/ |
368 |
public void threadRecordFailure(Throwable t) { |
369 |
threadFailure.compareAndSet(null, t); |
370 |
} |
371 |
|
372 |
public void setUp() { |
373 |
setDelays(); |
374 |
} |
375 |
|
376 |
/** |
377 |
* Extra checks that get done for all test cases. |
378 |
* |
379 |
* Triggers test case failure if any thread assertions have failed, |
380 |
* by rethrowing, in the test harness thread, any exception recorded |
381 |
* earlier by threadRecordFailure. |
382 |
* |
383 |
* Triggers test case failure if interrupt status is set in the main thread. |
384 |
*/ |
385 |
public void tearDown() throws Exception { |
386 |
Throwable t = threadFailure.getAndSet(null); |
387 |
if (t != null) { |
388 |
if (t instanceof Error) |
389 |
throw (Error) t; |
390 |
else if (t instanceof RuntimeException) |
391 |
throw (RuntimeException) t; |
392 |
else if (t instanceof Exception) |
393 |
throw (Exception) t; |
394 |
else { |
395 |
AssertionFailedError afe = |
396 |
new AssertionFailedError(t.toString()); |
397 |
afe.initCause(t); |
398 |
throw afe; |
399 |
} |
400 |
} |
401 |
|
402 |
if (Thread.interrupted()) |
403 |
throw new AssertionFailedError("interrupt status set in main thread"); |
404 |
|
405 |
checkForkJoinPoolThreadLeaks(); |
406 |
} |
407 |
|
408 |
/** |
409 |
* Find missing try { ... } finally { joinPool(e); } |
410 |
*/ |
411 |
void checkForkJoinPoolThreadLeaks() throws InterruptedException { |
412 |
Thread[] survivors = new Thread[5]; |
413 |
int count = Thread.enumerate(survivors); |
414 |
for (int i = 0; i < count; i++) { |
415 |
Thread thread = survivors[i]; |
416 |
String name = thread.getName(); |
417 |
if (name.startsWith("ForkJoinPool-")) { |
418 |
// give thread some time to terminate |
419 |
thread.join(LONG_DELAY_MS); |
420 |
if (!thread.isAlive()) continue; |
421 |
thread.stop(); |
422 |
throw new AssertionFailedError |
423 |
(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n", |
424 |
toString(), name)); |
425 |
} |
426 |
} |
427 |
} |
428 |
|
429 |
/** |
430 |
* Just like fail(reason), but additionally recording (using |
431 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
432 |
* the current testcase will fail. |
433 |
*/ |
434 |
public void threadFail(String reason) { |
435 |
try { |
436 |
fail(reason); |
437 |
} catch (AssertionFailedError t) { |
438 |
threadRecordFailure(t); |
439 |
fail(reason); |
440 |
} |
441 |
} |
442 |
|
443 |
/** |
444 |
* Just like assertTrue(b), but additionally recording (using |
445 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
446 |
* the current testcase will fail. |
447 |
*/ |
448 |
public void threadAssertTrue(boolean b) { |
449 |
try { |
450 |
assertTrue(b); |
451 |
} catch (AssertionFailedError t) { |
452 |
threadRecordFailure(t); |
453 |
throw t; |
454 |
} |
455 |
} |
456 |
|
457 |
/** |
458 |
* Just like assertFalse(b), but additionally recording (using |
459 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
460 |
* the current testcase will fail. |
461 |
*/ |
462 |
public void threadAssertFalse(boolean b) { |
463 |
try { |
464 |
assertFalse(b); |
465 |
} catch (AssertionFailedError t) { |
466 |
threadRecordFailure(t); |
467 |
throw t; |
468 |
} |
469 |
} |
470 |
|
471 |
/** |
472 |
* Just like assertNull(x), but additionally recording (using |
473 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
474 |
* the current testcase will fail. |
475 |
*/ |
476 |
public void threadAssertNull(Object x) { |
477 |
try { |
478 |
assertNull(x); |
479 |
} catch (AssertionFailedError t) { |
480 |
threadRecordFailure(t); |
481 |
throw t; |
482 |
} |
483 |
} |
484 |
|
485 |
/** |
486 |
* Just like assertEquals(x, y), but additionally recording (using |
487 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
488 |
* the current testcase will fail. |
489 |
*/ |
490 |
public void threadAssertEquals(long x, long y) { |
491 |
try { |
492 |
assertEquals(x, y); |
493 |
} catch (AssertionFailedError t) { |
494 |
threadRecordFailure(t); |
495 |
throw t; |
496 |
} |
497 |
} |
498 |
|
499 |
/** |
500 |
* Just like assertEquals(x, y), but additionally recording (using |
501 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
502 |
* the current testcase will fail. |
503 |
*/ |
504 |
public void threadAssertEquals(Object x, Object y) { |
505 |
try { |
506 |
assertEquals(x, y); |
507 |
} catch (AssertionFailedError t) { |
508 |
threadRecordFailure(t); |
509 |
throw t; |
510 |
} catch (Throwable t) { |
511 |
threadUnexpectedException(t); |
512 |
} |
513 |
} |
514 |
|
515 |
/** |
516 |
* Just like assertSame(x, y), but additionally recording (using |
517 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
518 |
* the current testcase will fail. |
519 |
*/ |
520 |
public void threadAssertSame(Object x, Object y) { |
521 |
try { |
522 |
assertSame(x, y); |
523 |
} catch (AssertionFailedError t) { |
524 |
threadRecordFailure(t); |
525 |
throw t; |
526 |
} |
527 |
} |
528 |
|
529 |
/** |
530 |
* Calls threadFail with message "should throw exception". |
531 |
*/ |
532 |
public void threadShouldThrow() { |
533 |
threadFail("should throw exception"); |
534 |
} |
535 |
|
536 |
/** |
537 |
* Calls threadFail with message "should throw" + exceptionName. |
538 |
*/ |
539 |
public void threadShouldThrow(String exceptionName) { |
540 |
threadFail("should throw " + exceptionName); |
541 |
} |
542 |
|
543 |
/** |
544 |
* Records the given exception using {@link #threadRecordFailure}, |
545 |
* then rethrows the exception, wrapping it in an |
546 |
* AssertionFailedError if necessary. |
547 |
*/ |
548 |
public void threadUnexpectedException(Throwable t) { |
549 |
threadRecordFailure(t); |
550 |
t.printStackTrace(); |
551 |
if (t instanceof RuntimeException) |
552 |
throw (RuntimeException) t; |
553 |
else if (t instanceof Error) |
554 |
throw (Error) t; |
555 |
else { |
556 |
AssertionFailedError afe = |
557 |
new AssertionFailedError("unexpected exception: " + t); |
558 |
afe.initCause(t); |
559 |
throw afe; |
560 |
} |
561 |
} |
562 |
|
563 |
/** |
564 |
* Delays, via Thread.sleep, for the given millisecond delay, but |
565 |
* if the sleep is shorter than specified, may re-sleep or yield |
566 |
* until time elapses. |
567 |
*/ |
568 |
static void delay(long millis) throws InterruptedException { |
569 |
long startTime = System.nanoTime(); |
570 |
long ns = millis * 1000 * 1000; |
571 |
for (;;) { |
572 |
if (millis > 0L) |
573 |
Thread.sleep(millis); |
574 |
else // too short to sleep |
575 |
Thread.yield(); |
576 |
long d = ns - (System.nanoTime() - startTime); |
577 |
if (d > 0L) |
578 |
millis = d / (1000 * 1000); |
579 |
else |
580 |
break; |
581 |
} |
582 |
} |
583 |
|
584 |
/** |
585 |
* Waits out termination of a thread pool or fails doing so. |
586 |
*/ |
587 |
void joinPool(ExecutorService exec) { |
588 |
try { |
589 |
exec.shutdown(); |
590 |
assertTrue("ExecutorService did not terminate in a timely manner", |
591 |
exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)); |
592 |
} catch (SecurityException ok) { |
593 |
// Allowed in case test doesn't have privs |
594 |
} catch (InterruptedException ie) { |
595 |
fail("Unexpected InterruptedException"); |
596 |
} |
597 |
} |
598 |
|
599 |
/** |
600 |
* A debugging tool to print all stack traces, as jstack does. |
601 |
*/ |
602 |
static void printAllStackTraces() { |
603 |
for (ThreadInfo info : |
604 |
ManagementFactory.getThreadMXBean() |
605 |
.dumpAllThreads(true, true)) |
606 |
System.err.print(info); |
607 |
} |
608 |
|
609 |
/** |
610 |
* Checks that thread does not terminate within the default |
611 |
* millisecond delay of {@code timeoutMillis()}. |
612 |
*/ |
613 |
void assertThreadStaysAlive(Thread thread) { |
614 |
assertThreadStaysAlive(thread, timeoutMillis()); |
615 |
} |
616 |
|
617 |
/** |
618 |
* Checks that thread does not terminate within the given millisecond delay. |
619 |
*/ |
620 |
void assertThreadStaysAlive(Thread thread, long millis) { |
621 |
try { |
622 |
// No need to optimize the failing case via Thread.join. |
623 |
delay(millis); |
624 |
assertTrue(thread.isAlive()); |
625 |
} catch (InterruptedException ie) { |
626 |
fail("Unexpected InterruptedException"); |
627 |
} |
628 |
} |
629 |
|
630 |
/** |
631 |
* Checks that the threads do not terminate within the default |
632 |
* millisecond delay of {@code timeoutMillis()}. |
633 |
*/ |
634 |
void assertThreadsStayAlive(Thread... threads) { |
635 |
assertThreadsStayAlive(timeoutMillis(), threads); |
636 |
} |
637 |
|
638 |
/** |
639 |
* Checks that the threads do not terminate within the given millisecond delay. |
640 |
*/ |
641 |
void assertThreadsStayAlive(long millis, Thread... threads) { |
642 |
try { |
643 |
// No need to optimize the failing case via Thread.join. |
644 |
delay(millis); |
645 |
for (Thread thread : threads) |
646 |
assertTrue(thread.isAlive()); |
647 |
} catch (InterruptedException ie) { |
648 |
fail("Unexpected InterruptedException"); |
649 |
} |
650 |
} |
651 |
|
652 |
/** |
653 |
* Checks that future.get times out, with the default timeout of |
654 |
* {@code timeoutMillis()}. |
655 |
*/ |
656 |
void assertFutureTimesOut(Future future) { |
657 |
assertFutureTimesOut(future, timeoutMillis()); |
658 |
} |
659 |
|
660 |
/** |
661 |
* Checks that future.get times out, with the given millisecond timeout. |
662 |
*/ |
663 |
void assertFutureTimesOut(Future future, long timeoutMillis) { |
664 |
long startTime = System.nanoTime(); |
665 |
try { |
666 |
future.get(timeoutMillis, MILLISECONDS); |
667 |
shouldThrow(); |
668 |
} catch (TimeoutException success) { |
669 |
} catch (Exception e) { |
670 |
threadUnexpectedException(e); |
671 |
} finally { future.cancel(true); } |
672 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
673 |
} |
674 |
|
675 |
/** |
676 |
* Fails with message "should throw exception". |
677 |
*/ |
678 |
public void shouldThrow() { |
679 |
fail("Should throw exception"); |
680 |
} |
681 |
|
682 |
/** |
683 |
* Fails with message "should throw " + exceptionName. |
684 |
*/ |
685 |
public void shouldThrow(String exceptionName) { |
686 |
fail("Should throw " + exceptionName); |
687 |
} |
688 |
|
689 |
/** |
690 |
* The number of elements to place in collections, arrays, etc. |
691 |
*/ |
692 |
public static final int SIZE = 20; |
693 |
|
694 |
// Some convenient Integer constants |
695 |
|
696 |
public static final Integer zero = new Integer(0); |
697 |
public static final Integer one = new Integer(1); |
698 |
public static final Integer two = new Integer(2); |
699 |
public static final Integer three = new Integer(3); |
700 |
public static final Integer four = new Integer(4); |
701 |
public static final Integer five = new Integer(5); |
702 |
public static final Integer six = new Integer(6); |
703 |
public static final Integer seven = new Integer(7); |
704 |
public static final Integer eight = new Integer(8); |
705 |
public static final Integer nine = new Integer(9); |
706 |
public static final Integer m1 = new Integer(-1); |
707 |
public static final Integer m2 = new Integer(-2); |
708 |
public static final Integer m3 = new Integer(-3); |
709 |
public static final Integer m4 = new Integer(-4); |
710 |
public static final Integer m5 = new Integer(-5); |
711 |
public static final Integer m6 = new Integer(-6); |
712 |
public static final Integer m10 = new Integer(-10); |
713 |
|
714 |
/** |
715 |
* Runs Runnable r with a security policy that permits precisely |
716 |
* the specified permissions. If there is no current security |
717 |
* manager, the runnable is run twice, both with and without a |
718 |
* security manager. We require that any security manager permit |
719 |
* getPolicy/setPolicy. |
720 |
*/ |
721 |
public void runWithPermissions(Runnable r, Permission... permissions) { |
722 |
SecurityManager sm = System.getSecurityManager(); |
723 |
if (sm == null) { |
724 |
r.run(); |
725 |
} |
726 |
runWithSecurityManagerWithPermissions(r, permissions); |
727 |
} |
728 |
|
729 |
/** |
730 |
* Runs Runnable r with a security policy that permits precisely |
731 |
* the specified permissions. If there is no current security |
732 |
* manager, a temporary one is set for the duration of the |
733 |
* Runnable. We require that any security manager permit |
734 |
* getPolicy/setPolicy. |
735 |
*/ |
736 |
public void runWithSecurityManagerWithPermissions(Runnable r, |
737 |
Permission... permissions) { |
738 |
SecurityManager sm = System.getSecurityManager(); |
739 |
if (sm == null) { |
740 |
Policy savedPolicy = Policy.getPolicy(); |
741 |
try { |
742 |
Policy.setPolicy(permissivePolicy()); |
743 |
System.setSecurityManager(new SecurityManager()); |
744 |
runWithSecurityManagerWithPermissions(r, permissions); |
745 |
} finally { |
746 |
System.setSecurityManager(null); |
747 |
Policy.setPolicy(savedPolicy); |
748 |
} |
749 |
} else { |
750 |
Policy savedPolicy = Policy.getPolicy(); |
751 |
AdjustablePolicy policy = new AdjustablePolicy(permissions); |
752 |
Policy.setPolicy(policy); |
753 |
|
754 |
try { |
755 |
r.run(); |
756 |
} finally { |
757 |
policy.addPermission(new SecurityPermission("setPolicy")); |
758 |
Policy.setPolicy(savedPolicy); |
759 |
} |
760 |
} |
761 |
} |
762 |
|
763 |
/** |
764 |
* Runs a runnable without any permissions. |
765 |
*/ |
766 |
public void runWithoutPermissions(Runnable r) { |
767 |
runWithPermissions(r); |
768 |
} |
769 |
|
770 |
/** |
771 |
* A security policy where new permissions can be dynamically added |
772 |
* or all cleared. |
773 |
*/ |
774 |
public static class AdjustablePolicy extends java.security.Policy { |
775 |
Permissions perms = new Permissions(); |
776 |
AdjustablePolicy(Permission... permissions) { |
777 |
for (Permission permission : permissions) |
778 |
perms.add(permission); |
779 |
} |
780 |
void addPermission(Permission perm) { perms.add(perm); } |
781 |
void clearPermissions() { perms = new Permissions(); } |
782 |
public PermissionCollection getPermissions(CodeSource cs) { |
783 |
return perms; |
784 |
} |
785 |
public PermissionCollection getPermissions(ProtectionDomain pd) { |
786 |
return perms; |
787 |
} |
788 |
public boolean implies(ProtectionDomain pd, Permission p) { |
789 |
return perms.implies(p); |
790 |
} |
791 |
public void refresh() {} |
792 |
public String toString() { |
793 |
List<Permission> ps = new ArrayList<Permission>(); |
794 |
for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();) |
795 |
ps.add(e.nextElement()); |
796 |
return "AdjustablePolicy with permissions " + ps; |
797 |
} |
798 |
} |
799 |
|
800 |
/** |
801 |
* Returns a policy containing all the permissions we ever need. |
802 |
*/ |
803 |
public static Policy permissivePolicy() { |
804 |
return new AdjustablePolicy |
805 |
// Permissions j.u.c. needs directly |
806 |
(new RuntimePermission("modifyThread"), |
807 |
new RuntimePermission("getClassLoader"), |
808 |
new RuntimePermission("setContextClassLoader"), |
809 |
// Permissions needed to change permissions! |
810 |
new SecurityPermission("getPolicy"), |
811 |
new SecurityPermission("setPolicy"), |
812 |
new RuntimePermission("setSecurityManager"), |
813 |
// Permissions needed by the junit test harness |
814 |
new RuntimePermission("accessDeclaredMembers"), |
815 |
new PropertyPermission("*", "read"), |
816 |
new java.io.FilePermission("<<ALL FILES>>", "read")); |
817 |
} |
818 |
|
819 |
/** |
820 |
* Sleeps until the given time has elapsed. |
821 |
* Throws AssertionFailedError if interrupted. |
822 |
*/ |
823 |
void sleep(long millis) { |
824 |
try { |
825 |
delay(millis); |
826 |
} catch (InterruptedException ie) { |
827 |
AssertionFailedError afe = |
828 |
new AssertionFailedError("Unexpected InterruptedException"); |
829 |
afe.initCause(ie); |
830 |
throw afe; |
831 |
} |
832 |
} |
833 |
|
834 |
/** |
835 |
* Spin-waits up to the specified number of milliseconds for the given |
836 |
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
837 |
*/ |
838 |
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
839 |
long startTime = System.nanoTime(); |
840 |
for (;;) { |
841 |
Thread.State s = thread.getState(); |
842 |
if (s == Thread.State.BLOCKED || |
843 |
s == Thread.State.WAITING || |
844 |
s == Thread.State.TIMED_WAITING) |
845 |
return; |
846 |
else if (s == Thread.State.TERMINATED) |
847 |
fail("Unexpected thread termination"); |
848 |
else if (millisElapsedSince(startTime) > timeoutMillis) { |
849 |
threadAssertTrue(thread.isAlive()); |
850 |
return; |
851 |
} |
852 |
Thread.yield(); |
853 |
} |
854 |
} |
855 |
|
856 |
/** |
857 |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
858 |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
859 |
*/ |
860 |
void waitForThreadToEnterWaitState(Thread thread) { |
861 |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
862 |
} |
863 |
|
864 |
/** |
865 |
* Returns the number of milliseconds since time given by |
866 |
* startNanoTime, which must have been previously returned from a |
867 |
* call to {@link System.nanoTime()}. |
868 |
*/ |
869 |
long millisElapsedSince(long startNanoTime) { |
870 |
return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime); |
871 |
} |
872 |
|
873 |
/** |
874 |
* Returns a new started daemon Thread running the given runnable. |
875 |
*/ |
876 |
Thread newStartedThread(Runnable runnable) { |
877 |
Thread t = new Thread(runnable); |
878 |
t.setDaemon(true); |
879 |
t.start(); |
880 |
return t; |
881 |
} |
882 |
|
883 |
/** |
884 |
* Waits for the specified time (in milliseconds) for the thread |
885 |
* to terminate (using {@link Thread#join(long)}), else interrupts |
886 |
* the thread (in the hope that it may terminate later) and fails. |
887 |
*/ |
888 |
void awaitTermination(Thread t, long timeoutMillis) { |
889 |
try { |
890 |
t.join(timeoutMillis); |
891 |
} catch (InterruptedException ie) { |
892 |
threadUnexpectedException(ie); |
893 |
} finally { |
894 |
if (t.getState() != Thread.State.TERMINATED) { |
895 |
t.interrupt(); |
896 |
fail("Test timed out"); |
897 |
} |
898 |
} |
899 |
} |
900 |
|
901 |
/** |
902 |
* Waits for LONG_DELAY_MS milliseconds for the thread to |
903 |
* terminate (using {@link Thread#join(long)}), else interrupts |
904 |
* the thread (in the hope that it may terminate later) and fails. |
905 |
*/ |
906 |
void awaitTermination(Thread t) { |
907 |
awaitTermination(t, LONG_DELAY_MS); |
908 |
} |
909 |
|
910 |
// Some convenient Runnable classes |
911 |
|
912 |
public abstract class CheckedRunnable implements Runnable { |
913 |
protected abstract void realRun() throws Throwable; |
914 |
|
915 |
public final void run() { |
916 |
try { |
917 |
realRun(); |
918 |
} catch (Throwable t) { |
919 |
threadUnexpectedException(t); |
920 |
} |
921 |
} |
922 |
} |
923 |
|
924 |
public abstract class RunnableShouldThrow implements Runnable { |
925 |
protected abstract void realRun() throws Throwable; |
926 |
|
927 |
final Class<?> exceptionClass; |
928 |
|
929 |
<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) { |
930 |
this.exceptionClass = exceptionClass; |
931 |
} |
932 |
|
933 |
public final void run() { |
934 |
try { |
935 |
realRun(); |
936 |
threadShouldThrow(exceptionClass.getSimpleName()); |
937 |
} catch (Throwable t) { |
938 |
if (! exceptionClass.isInstance(t)) |
939 |
threadUnexpectedException(t); |
940 |
} |
941 |
} |
942 |
} |
943 |
|
944 |
public abstract class ThreadShouldThrow extends Thread { |
945 |
protected abstract void realRun() throws Throwable; |
946 |
|
947 |
final Class<?> exceptionClass; |
948 |
|
949 |
<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) { |
950 |
this.exceptionClass = exceptionClass; |
951 |
} |
952 |
|
953 |
public final void run() { |
954 |
try { |
955 |
realRun(); |
956 |
threadShouldThrow(exceptionClass.getSimpleName()); |
957 |
} catch (Throwable t) { |
958 |
if (! exceptionClass.isInstance(t)) |
959 |
threadUnexpectedException(t); |
960 |
} |
961 |
} |
962 |
} |
963 |
|
964 |
public abstract class CheckedInterruptedRunnable implements Runnable { |
965 |
protected abstract void realRun() throws Throwable; |
966 |
|
967 |
public final void run() { |
968 |
try { |
969 |
realRun(); |
970 |
threadShouldThrow("InterruptedException"); |
971 |
} catch (InterruptedException success) { |
972 |
threadAssertFalse(Thread.interrupted()); |
973 |
} catch (Throwable t) { |
974 |
threadUnexpectedException(t); |
975 |
} |
976 |
} |
977 |
} |
978 |
|
979 |
public abstract class CheckedCallable<T> implements Callable<T> { |
980 |
protected abstract T realCall() throws Throwable; |
981 |
|
982 |
public final T call() { |
983 |
try { |
984 |
return realCall(); |
985 |
} catch (Throwable t) { |
986 |
threadUnexpectedException(t); |
987 |
return null; |
988 |
} |
989 |
} |
990 |
} |
991 |
|
992 |
public abstract class CheckedInterruptedCallable<T> |
993 |
implements Callable<T> { |
994 |
protected abstract T realCall() throws Throwable; |
995 |
|
996 |
public final T call() { |
997 |
try { |
998 |
T result = realCall(); |
999 |
threadShouldThrow("InterruptedException"); |
1000 |
return result; |
1001 |
} catch (InterruptedException success) { |
1002 |
threadAssertFalse(Thread.interrupted()); |
1003 |
} catch (Throwable t) { |
1004 |
threadUnexpectedException(t); |
1005 |
} |
1006 |
return null; |
1007 |
} |
1008 |
} |
1009 |
|
1010 |
public static class NoOpRunnable implements Runnable { |
1011 |
public void run() {} |
1012 |
} |
1013 |
|
1014 |
public static class NoOpCallable implements Callable { |
1015 |
public Object call() { return Boolean.TRUE; } |
1016 |
} |
1017 |
|
1018 |
public static final String TEST_STRING = "a test string"; |
1019 |
|
1020 |
public static class StringTask implements Callable<String> { |
1021 |
public String call() { return TEST_STRING; } |
1022 |
} |
1023 |
|
1024 |
public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) { |
1025 |
return new CheckedCallable<String>() { |
1026 |
protected String realCall() { |
1027 |
try { |
1028 |
latch.await(); |
1029 |
} catch (InterruptedException quittingTime) {} |
1030 |
return TEST_STRING; |
1031 |
}}; |
1032 |
} |
1033 |
|
1034 |
public Runnable awaiter(final CountDownLatch latch) { |
1035 |
return new CheckedRunnable() { |
1036 |
public void realRun() throws InterruptedException { |
1037 |
await(latch); |
1038 |
}}; |
1039 |
} |
1040 |
|
1041 |
public void await(CountDownLatch latch) { |
1042 |
try { |
1043 |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
1044 |
} catch (Throwable t) { |
1045 |
threadUnexpectedException(t); |
1046 |
} |
1047 |
} |
1048 |
|
1049 |
public void await(Semaphore semaphore) { |
1050 |
try { |
1051 |
assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)); |
1052 |
} catch (Throwable t) { |
1053 |
threadUnexpectedException(t); |
1054 |
} |
1055 |
} |
1056 |
|
1057 |
// /** |
1058 |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
1059 |
// */ |
1060 |
// public void await(AtomicBoolean flag) { |
1061 |
// await(flag, LONG_DELAY_MS); |
1062 |
// } |
1063 |
|
1064 |
// /** |
1065 |
// * Spin-waits up to the specified timeout until flag becomes true. |
1066 |
// */ |
1067 |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
1068 |
// long startTime = System.nanoTime(); |
1069 |
// while (!flag.get()) { |
1070 |
// if (millisElapsedSince(startTime) > timeoutMillis) |
1071 |
// throw new AssertionFailedError("timed out"); |
1072 |
// Thread.yield(); |
1073 |
// } |
1074 |
// } |
1075 |
|
1076 |
public static class NPETask implements Callable<String> { |
1077 |
public String call() { throw new NullPointerException(); } |
1078 |
} |
1079 |
|
1080 |
public static class CallableOne implements Callable<Integer> { |
1081 |
public Integer call() { return one; } |
1082 |
} |
1083 |
|
1084 |
public class ShortRunnable extends CheckedRunnable { |
1085 |
protected void realRun() throws Throwable { |
1086 |
delay(SHORT_DELAY_MS); |
1087 |
} |
1088 |
} |
1089 |
|
1090 |
public class ShortInterruptedRunnable extends CheckedInterruptedRunnable { |
1091 |
protected void realRun() throws InterruptedException { |
1092 |
delay(SHORT_DELAY_MS); |
1093 |
} |
1094 |
} |
1095 |
|
1096 |
public class SmallRunnable extends CheckedRunnable { |
1097 |
protected void realRun() throws Throwable { |
1098 |
delay(SMALL_DELAY_MS); |
1099 |
} |
1100 |
} |
1101 |
|
1102 |
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable { |
1103 |
protected void realRun() { |
1104 |
try { |
1105 |
delay(SMALL_DELAY_MS); |
1106 |
} catch (InterruptedException ok) {} |
1107 |
} |
1108 |
} |
1109 |
|
1110 |
public class SmallCallable extends CheckedCallable { |
1111 |
protected Object realCall() throws InterruptedException { |
1112 |
delay(SMALL_DELAY_MS); |
1113 |
return Boolean.TRUE; |
1114 |
} |
1115 |
} |
1116 |
|
1117 |
public class MediumRunnable extends CheckedRunnable { |
1118 |
protected void realRun() throws Throwable { |
1119 |
delay(MEDIUM_DELAY_MS); |
1120 |
} |
1121 |
} |
1122 |
|
1123 |
public class MediumInterruptedRunnable extends CheckedInterruptedRunnable { |
1124 |
protected void realRun() throws InterruptedException { |
1125 |
delay(MEDIUM_DELAY_MS); |
1126 |
} |
1127 |
} |
1128 |
|
1129 |
public Runnable possiblyInterruptedRunnable(final long timeoutMillis) { |
1130 |
return new CheckedRunnable() { |
1131 |
protected void realRun() { |
1132 |
try { |
1133 |
delay(timeoutMillis); |
1134 |
} catch (InterruptedException ok) {} |
1135 |
}}; |
1136 |
} |
1137 |
|
1138 |
public class MediumPossiblyInterruptedRunnable extends CheckedRunnable { |
1139 |
protected void realRun() { |
1140 |
try { |
1141 |
delay(MEDIUM_DELAY_MS); |
1142 |
} catch (InterruptedException ok) {} |
1143 |
} |
1144 |
} |
1145 |
|
1146 |
public class LongPossiblyInterruptedRunnable extends CheckedRunnable { |
1147 |
protected void realRun() { |
1148 |
try { |
1149 |
delay(LONG_DELAY_MS); |
1150 |
} catch (InterruptedException ok) {} |
1151 |
} |
1152 |
} |
1153 |
|
1154 |
/** |
1155 |
* For use as ThreadFactory in constructors |
1156 |
*/ |
1157 |
public static class SimpleThreadFactory implements ThreadFactory { |
1158 |
public Thread newThread(Runnable r) { |
1159 |
return new Thread(r); |
1160 |
} |
1161 |
} |
1162 |
|
1163 |
public interface TrackedRunnable extends Runnable { |
1164 |
boolean isDone(); |
1165 |
} |
1166 |
|
1167 |
public static TrackedRunnable trackedRunnable(final long timeoutMillis) { |
1168 |
return new TrackedRunnable() { |
1169 |
private volatile boolean done = false; |
1170 |
public boolean isDone() { return done; } |
1171 |
public void run() { |
1172 |
try { |
1173 |
delay(timeoutMillis); |
1174 |
done = true; |
1175 |
} catch (InterruptedException ok) {} |
1176 |
} |
1177 |
}; |
1178 |
} |
1179 |
|
1180 |
public static class TrackedShortRunnable implements Runnable { |
1181 |
public volatile boolean done = false; |
1182 |
public void run() { |
1183 |
try { |
1184 |
delay(SHORT_DELAY_MS); |
1185 |
done = true; |
1186 |
} catch (InterruptedException ok) {} |
1187 |
} |
1188 |
} |
1189 |
|
1190 |
public static class TrackedSmallRunnable implements Runnable { |
1191 |
public volatile boolean done = false; |
1192 |
public void run() { |
1193 |
try { |
1194 |
delay(SMALL_DELAY_MS); |
1195 |
done = true; |
1196 |
} catch (InterruptedException ok) {} |
1197 |
} |
1198 |
} |
1199 |
|
1200 |
public static class TrackedMediumRunnable implements Runnable { |
1201 |
public volatile boolean done = false; |
1202 |
public void run() { |
1203 |
try { |
1204 |
delay(MEDIUM_DELAY_MS); |
1205 |
done = true; |
1206 |
} catch (InterruptedException ok) {} |
1207 |
} |
1208 |
} |
1209 |
|
1210 |
public static class TrackedLongRunnable implements Runnable { |
1211 |
public volatile boolean done = false; |
1212 |
public void run() { |
1213 |
try { |
1214 |
delay(LONG_DELAY_MS); |
1215 |
done = true; |
1216 |
} catch (InterruptedException ok) {} |
1217 |
} |
1218 |
} |
1219 |
|
1220 |
public static class TrackedNoOpRunnable implements Runnable { |
1221 |
public volatile boolean done = false; |
1222 |
public void run() { |
1223 |
done = true; |
1224 |
} |
1225 |
} |
1226 |
|
1227 |
public static class TrackedCallable implements Callable { |
1228 |
public volatile boolean done = false; |
1229 |
public Object call() { |
1230 |
try { |
1231 |
delay(SMALL_DELAY_MS); |
1232 |
done = true; |
1233 |
} catch (InterruptedException ok) {} |
1234 |
return Boolean.TRUE; |
1235 |
} |
1236 |
} |
1237 |
|
1238 |
/** |
1239 |
* Analog of CheckedRunnable for RecursiveAction |
1240 |
*/ |
1241 |
public abstract class CheckedRecursiveAction extends RecursiveAction { |
1242 |
protected abstract void realCompute() throws Throwable; |
1243 |
|
1244 |
@Override protected final void compute() { |
1245 |
try { |
1246 |
realCompute(); |
1247 |
} catch (Throwable t) { |
1248 |
threadUnexpectedException(t); |
1249 |
} |
1250 |
} |
1251 |
} |
1252 |
|
1253 |
/** |
1254 |
* Analog of CheckedCallable for RecursiveTask |
1255 |
*/ |
1256 |
public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> { |
1257 |
protected abstract T realCompute() throws Throwable; |
1258 |
|
1259 |
@Override protected final T compute() { |
1260 |
try { |
1261 |
return realCompute(); |
1262 |
} catch (Throwable t) { |
1263 |
threadUnexpectedException(t); |
1264 |
return null; |
1265 |
} |
1266 |
} |
1267 |
} |
1268 |
|
1269 |
/** |
1270 |
* For use as RejectedExecutionHandler in constructors |
1271 |
*/ |
1272 |
public static class NoOpREHandler implements RejectedExecutionHandler { |
1273 |
public void rejectedExecution(Runnable r, |
1274 |
ThreadPoolExecutor executor) {} |
1275 |
} |
1276 |
|
1277 |
/** |
1278 |
* A CyclicBarrier that uses timed await and fails with |
1279 |
* AssertionFailedErrors instead of throwing checked exceptions. |
1280 |
*/ |
1281 |
public class CheckedBarrier extends CyclicBarrier { |
1282 |
public CheckedBarrier(int parties) { super(parties); } |
1283 |
|
1284 |
public int await() { |
1285 |
try { |
1286 |
return super.await(2 * LONG_DELAY_MS, MILLISECONDS); |
1287 |
} catch (TimeoutException e) { |
1288 |
throw new AssertionFailedError("timed out"); |
1289 |
} catch (Exception e) { |
1290 |
AssertionFailedError afe = |
1291 |
new AssertionFailedError("Unexpected exception: " + e); |
1292 |
afe.initCause(e); |
1293 |
throw afe; |
1294 |
} |
1295 |
} |
1296 |
} |
1297 |
|
1298 |
void checkEmpty(BlockingQueue q) { |
1299 |
try { |
1300 |
assertTrue(q.isEmpty()); |
1301 |
assertEquals(0, q.size()); |
1302 |
assertNull(q.peek()); |
1303 |
assertNull(q.poll()); |
1304 |
assertNull(q.poll(0, MILLISECONDS)); |
1305 |
assertEquals(q.toString(), "[]"); |
1306 |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
1307 |
assertFalse(q.iterator().hasNext()); |
1308 |
try { |
1309 |
q.element(); |
1310 |
shouldThrow(); |
1311 |
} catch (NoSuchElementException success) {} |
1312 |
try { |
1313 |
q.iterator().next(); |
1314 |
shouldThrow(); |
1315 |
} catch (NoSuchElementException success) {} |
1316 |
try { |
1317 |
q.remove(); |
1318 |
shouldThrow(); |
1319 |
} catch (NoSuchElementException success) {} |
1320 |
} catch (InterruptedException ie) { |
1321 |
threadUnexpectedException(ie); |
1322 |
} |
1323 |
} |
1324 |
|
1325 |
void assertSerialEquals(Object x, Object y) { |
1326 |
assertTrue(Arrays.equals(serialBytes(x), serialBytes(y))); |
1327 |
} |
1328 |
|
1329 |
void assertNotSerialEquals(Object x, Object y) { |
1330 |
assertFalse(Arrays.equals(serialBytes(x), serialBytes(y))); |
1331 |
} |
1332 |
|
1333 |
byte[] serialBytes(Object o) { |
1334 |
try { |
1335 |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1336 |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1337 |
oos.writeObject(o); |
1338 |
oos.flush(); |
1339 |
oos.close(); |
1340 |
return bos.toByteArray(); |
1341 |
} catch (Throwable t) { |
1342 |
threadUnexpectedException(t); |
1343 |
return new byte[0]; |
1344 |
} |
1345 |
} |
1346 |
|
1347 |
@SuppressWarnings("unchecked") |
1348 |
<T> T serialClone(T o) { |
1349 |
try { |
1350 |
ObjectInputStream ois = new ObjectInputStream |
1351 |
(new ByteArrayInputStream(serialBytes(o))); |
1352 |
T clone = (T) ois.readObject(); |
1353 |
assertSame(o.getClass(), clone.getClass()); |
1354 |
return clone; |
1355 |
} catch (Throwable t) { |
1356 |
threadUnexpectedException(t); |
1357 |
return null; |
1358 |
} |
1359 |
} |
1360 |
|
1361 |
public void assertThrows(Class<? extends Throwable> expectedExceptionClass, |
1362 |
Runnable... throwingActions) { |
1363 |
for (Runnable throwingAction : throwingActions) { |
1364 |
boolean threw = false; |
1365 |
try { throwingAction.run(); } |
1366 |
catch (Throwable t) { |
1367 |
threw = true; |
1368 |
if (!expectedExceptionClass.isInstance(t)) { |
1369 |
AssertionFailedError afe = |
1370 |
new AssertionFailedError |
1371 |
("Expected " + expectedExceptionClass.getName() + |
1372 |
", got " + t.getClass().getName()); |
1373 |
afe.initCause(t); |
1374 |
threadUnexpectedException(afe); |
1375 |
} |
1376 |
} |
1377 |
if (!threw) |
1378 |
shouldThrow(expectedExceptionClass.getName()); |
1379 |
} |
1380 |
} |
1381 |
} |