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/* |
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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.*; |
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import java.io.ByteArrayInputStream; |
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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.util.Arrays; |
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import java.util.Date; |
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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; |
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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 |
35 |
* 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 |
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* {@code fail}, {@code assertTrue}, etc.) It is OK (but not |
45 |
* particularly recommended) for other code to use these forms too. |
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* Only the most typically used JUnit assertion methods are defined |
47 |
* 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 |
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* 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); |
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|
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protected void runTest() throws Throwable { |
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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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|
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protected void runTestProfiled() throws Throwable { |
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long t0 = System.nanoTime(); |
134 |
try { |
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super.runTest(); |
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} finally { |
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long elapsedMillis = |
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(System.nanoTime() - t0) / (1000L * 1000L); |
139 |
if (elapsedMillis >= profileThreshold) |
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System.out.printf("%n%s: %d%n", toString(), elapsedMillis); |
141 |
} |
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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 |
146 |
*/ |
147 |
public static void main(String[] args) { |
148 |
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) { |
157 |
junit.textui.TestRunner.run(s); |
158 |
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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|
164 |
public static TestSuite newTestSuite(Object... suiteOrClasses) { |
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TestSuite suite = new TestSuite(); |
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for (Object suiteOrClass : suiteOrClasses) { |
167 |
if (suiteOrClass instanceof TestSuite) |
168 |
suite.addTest((TestSuite) suiteOrClass); |
169 |
else if (suiteOrClass instanceof Class) |
170 |
suite.addTest(new TestSuite((Class<?>) suiteOrClass)); |
171 |
else |
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throw new ClassCastException("not a test suite or class"); |
173 |
} |
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return suite; |
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} |
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|
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/** |
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* Collects all JSR166 unit tests as one suite. |
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*/ |
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public static Test suite() { |
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return newTestSuite( |
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ForkJoinPoolTest.suite(), |
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ForkJoinTaskTest.suite(), |
184 |
RecursiveActionTest.suite(), |
185 |
RecursiveTaskTest.suite(), |
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LinkedTransferQueueTest.suite(), |
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PhaserTest.suite(), |
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ThreadLocalRandomTest.suite(), |
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AbstractExecutorServiceTest.suite(), |
190 |
AbstractQueueTest.suite(), |
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AbstractQueuedSynchronizerTest.suite(), |
192 |
AbstractQueuedLongSynchronizerTest.suite(), |
193 |
ArrayBlockingQueueTest.suite(), |
194 |
ArrayDequeTest.suite(), |
195 |
AtomicBooleanTest.suite(), |
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AtomicIntegerArrayTest.suite(), |
197 |
AtomicIntegerFieldUpdaterTest.suite(), |
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AtomicIntegerTest.suite(), |
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AtomicLongArrayTest.suite(), |
200 |
AtomicLongFieldUpdaterTest.suite(), |
201 |
AtomicLongTest.suite(), |
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AtomicMarkableReferenceTest.suite(), |
203 |
AtomicReferenceArrayTest.suite(), |
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AtomicReferenceFieldUpdaterTest.suite(), |
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AtomicReferenceTest.suite(), |
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AtomicStampedReferenceTest.suite(), |
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ConcurrentHashMapTest.suite(), |
208 |
ConcurrentLinkedDequeTest.suite(), |
209 |
ConcurrentLinkedQueueTest.suite(), |
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ConcurrentSkipListMapTest.suite(), |
211 |
ConcurrentSkipListSubMapTest.suite(), |
212 |
ConcurrentSkipListSetTest.suite(), |
213 |
ConcurrentSkipListSubSetTest.suite(), |
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CopyOnWriteArrayListTest.suite(), |
215 |
CopyOnWriteArraySetTest.suite(), |
216 |
CountDownLatchTest.suite(), |
217 |
CyclicBarrierTest.suite(), |
218 |
DelayQueueTest.suite(), |
219 |
EntryTest.suite(), |
220 |
ExchangerTest.suite(), |
221 |
ExecutorsTest.suite(), |
222 |
ExecutorCompletionServiceTest.suite(), |
223 |
FutureTaskTest.suite(), |
224 |
LinkedBlockingDequeTest.suite(), |
225 |
LinkedBlockingQueueTest.suite(), |
226 |
LinkedListTest.suite(), |
227 |
LockSupportTest.suite(), |
228 |
PriorityBlockingQueueTest.suite(), |
229 |
PriorityQueueTest.suite(), |
230 |
ReentrantLockTest.suite(), |
231 |
ReentrantReadWriteLockTest.suite(), |
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ScheduledExecutorTest.suite(), |
233 |
ScheduledExecutorSubclassTest.suite(), |
234 |
SemaphoreTest.suite(), |
235 |
SynchronousQueueTest.suite(), |
236 |
SystemTest.suite(), |
237 |
ThreadLocalTest.suite(), |
238 |
ThreadPoolExecutorTest.suite(), |
239 |
ThreadPoolExecutorSubclassTest.suite(), |
240 |
ThreadTest.suite(), |
241 |
TimeUnitTest.suite(), |
242 |
TreeMapTest.suite(), |
243 |
TreeSetTest.suite(), |
244 |
TreeSubMapTest.suite(), |
245 |
TreeSubSetTest.suite()); |
246 |
} |
247 |
|
248 |
|
249 |
public static long SHORT_DELAY_MS; |
250 |
public static long SMALL_DELAY_MS; |
251 |
public static long MEDIUM_DELAY_MS; |
252 |
public static long LONG_DELAY_MS; |
253 |
|
254 |
|
255 |
/** |
256 |
* Returns the shortest timed delay. This could |
257 |
* be reimplemented to use for example a Property. |
258 |
*/ |
259 |
protected long getShortDelay() { |
260 |
return 50; |
261 |
} |
262 |
|
263 |
|
264 |
/** |
265 |
* Sets delays as multiples of SHORT_DELAY. |
266 |
*/ |
267 |
protected void setDelays() { |
268 |
SHORT_DELAY_MS = getShortDelay(); |
269 |
SMALL_DELAY_MS = SHORT_DELAY_MS * 5; |
270 |
MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10; |
271 |
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
272 |
} |
273 |
|
274 |
/** |
275 |
* Returns a timeout in milliseconds to be used in tests that |
276 |
* verify that operations block or time out. |
277 |
*/ |
278 |
long timeoutMillis() { |
279 |
return SHORT_DELAY_MS / 4; |
280 |
} |
281 |
|
282 |
/** |
283 |
* Returns a new Date instance representing a time delayMillis |
284 |
* milliseconds in the future. |
285 |
*/ |
286 |
Date delayedDate(long delayMillis) { |
287 |
return new Date(new Date().getTime() + delayMillis); |
288 |
} |
289 |
|
290 |
/** |
291 |
* The first exception encountered if any threadAssertXXX method fails. |
292 |
*/ |
293 |
private final AtomicReference<Throwable> threadFailure |
294 |
= new AtomicReference<Throwable>(null); |
295 |
|
296 |
/** |
297 |
* Records an exception so that it can be rethrown later in the test |
298 |
* harness thread, triggering a test case failure. Only the first |
299 |
* failure is recorded; subsequent calls to this method from within |
300 |
* the same test have no effect. |
301 |
*/ |
302 |
public void threadRecordFailure(Throwable t) { |
303 |
threadFailure.compareAndSet(null, t); |
304 |
} |
305 |
|
306 |
public void setUp() { |
307 |
setDelays(); |
308 |
} |
309 |
|
310 |
/** |
311 |
* Triggers test case failure if any thread assertions have failed, |
312 |
* by rethrowing, in the test harness thread, any exception recorded |
313 |
* earlier by threadRecordFailure. |
314 |
*/ |
315 |
public void tearDown() throws Exception { |
316 |
Throwable t = threadFailure.getAndSet(null); |
317 |
if (t != null) { |
318 |
if (t instanceof Error) |
319 |
throw (Error) t; |
320 |
else if (t instanceof RuntimeException) |
321 |
throw (RuntimeException) t; |
322 |
else if (t instanceof Exception) |
323 |
throw (Exception) t; |
324 |
else { |
325 |
AssertionFailedError afe = |
326 |
new AssertionFailedError(t.toString()); |
327 |
afe.initCause(t); |
328 |
throw afe; |
329 |
} |
330 |
} |
331 |
} |
332 |
|
333 |
/** |
334 |
* Just like fail(reason), but additionally recording (using |
335 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
336 |
* the current testcase will fail. |
337 |
*/ |
338 |
public void threadFail(String reason) { |
339 |
try { |
340 |
fail(reason); |
341 |
} catch (AssertionFailedError t) { |
342 |
threadRecordFailure(t); |
343 |
fail(reason); |
344 |
} |
345 |
} |
346 |
|
347 |
/** |
348 |
* Just like assertTrue(b), but additionally recording (using |
349 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
350 |
* the current testcase will fail. |
351 |
*/ |
352 |
public void threadAssertTrue(boolean b) { |
353 |
try { |
354 |
assertTrue(b); |
355 |
} catch (AssertionFailedError t) { |
356 |
threadRecordFailure(t); |
357 |
throw t; |
358 |
} |
359 |
} |
360 |
|
361 |
/** |
362 |
* Just like assertFalse(b), but additionally recording (using |
363 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
364 |
* the current testcase will fail. |
365 |
*/ |
366 |
public void threadAssertFalse(boolean b) { |
367 |
try { |
368 |
assertFalse(b); |
369 |
} catch (AssertionFailedError t) { |
370 |
threadRecordFailure(t); |
371 |
throw t; |
372 |
} |
373 |
} |
374 |
|
375 |
/** |
376 |
* Just like assertNull(x), but additionally recording (using |
377 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
378 |
* the current testcase will fail. |
379 |
*/ |
380 |
public void threadAssertNull(Object x) { |
381 |
try { |
382 |
assertNull(x); |
383 |
} catch (AssertionFailedError t) { |
384 |
threadRecordFailure(t); |
385 |
throw t; |
386 |
} |
387 |
} |
388 |
|
389 |
/** |
390 |
* Just like assertEquals(x, y), but additionally recording (using |
391 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
392 |
* the current testcase will fail. |
393 |
*/ |
394 |
public void threadAssertEquals(long x, long y) { |
395 |
try { |
396 |
assertEquals(x, y); |
397 |
} catch (AssertionFailedError t) { |
398 |
threadRecordFailure(t); |
399 |
throw t; |
400 |
} |
401 |
} |
402 |
|
403 |
/** |
404 |
* Just like assertEquals(x, y), but additionally recording (using |
405 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
406 |
* the current testcase will fail. |
407 |
*/ |
408 |
public void threadAssertEquals(Object x, Object y) { |
409 |
try { |
410 |
assertEquals(x, y); |
411 |
} catch (AssertionFailedError t) { |
412 |
threadRecordFailure(t); |
413 |
throw t; |
414 |
} catch (Throwable t) { |
415 |
threadUnexpectedException(t); |
416 |
} |
417 |
} |
418 |
|
419 |
/** |
420 |
* Just like assertSame(x, y), but additionally recording (using |
421 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
422 |
* the current testcase will fail. |
423 |
*/ |
424 |
public void threadAssertSame(Object x, Object y) { |
425 |
try { |
426 |
assertSame(x, y); |
427 |
} catch (AssertionFailedError t) { |
428 |
threadRecordFailure(t); |
429 |
throw t; |
430 |
} |
431 |
} |
432 |
|
433 |
/** |
434 |
* Calls threadFail with message "should throw exception". |
435 |
*/ |
436 |
public void threadShouldThrow() { |
437 |
threadFail("should throw exception"); |
438 |
} |
439 |
|
440 |
/** |
441 |
* Calls threadFail with message "should throw" + exceptionName. |
442 |
*/ |
443 |
public void threadShouldThrow(String exceptionName) { |
444 |
threadFail("should throw " + exceptionName); |
445 |
} |
446 |
|
447 |
/** |
448 |
* Records the given exception using {@link #threadRecordFailure}, |
449 |
* then rethrows the exception, wrapping it in an |
450 |
* AssertionFailedError if necessary. |
451 |
*/ |
452 |
public void threadUnexpectedException(Throwable t) { |
453 |
threadRecordFailure(t); |
454 |
t.printStackTrace(); |
455 |
if (t instanceof RuntimeException) |
456 |
throw (RuntimeException) t; |
457 |
else if (t instanceof Error) |
458 |
throw (Error) t; |
459 |
else { |
460 |
AssertionFailedError afe = |
461 |
new AssertionFailedError("unexpected exception: " + t); |
462 |
t.initCause(t); |
463 |
throw afe; |
464 |
} |
465 |
} |
466 |
|
467 |
/** |
468 |
* Delays, via Thread.sleep, for the given millisecond delay, but |
469 |
* if the sleep is shorter than specified, may re-sleep or yield |
470 |
* until time elapses. |
471 |
*/ |
472 |
static void delay(long millis) throws InterruptedException { |
473 |
long startTime = System.nanoTime(); |
474 |
long ns = millis * 1000 * 1000; |
475 |
for (;;) { |
476 |
if (millis > 0L) |
477 |
Thread.sleep(millis); |
478 |
else // too short to sleep |
479 |
Thread.yield(); |
480 |
long d = ns - (System.nanoTime() - startTime); |
481 |
if (d > 0L) |
482 |
millis = d / (1000 * 1000); |
483 |
else |
484 |
break; |
485 |
} |
486 |
} |
487 |
|
488 |
/** |
489 |
* Waits out termination of a thread pool or fails doing so. |
490 |
*/ |
491 |
void joinPool(ExecutorService exec) { |
492 |
try { |
493 |
exec.shutdown(); |
494 |
assertTrue("ExecutorService did not terminate in a timely manner", |
495 |
exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)); |
496 |
} catch (SecurityException ok) { |
497 |
// Allowed in case test doesn't have privs |
498 |
} catch (InterruptedException ie) { |
499 |
fail("Unexpected InterruptedException"); |
500 |
} |
501 |
} |
502 |
|
503 |
/** |
504 |
* Checks that thread does not terminate within the default |
505 |
* millisecond delay of {@code timeoutMillis()}. |
506 |
*/ |
507 |
void assertThreadStaysAlive(Thread thread) { |
508 |
assertThreadStaysAlive(thread, timeoutMillis()); |
509 |
} |
510 |
|
511 |
/** |
512 |
* Checks that thread does not terminate within the given millisecond delay. |
513 |
*/ |
514 |
void assertThreadStaysAlive(Thread thread, long millis) { |
515 |
try { |
516 |
// No need to optimize the failing case via Thread.join. |
517 |
delay(millis); |
518 |
assertTrue(thread.isAlive()); |
519 |
} catch (InterruptedException ie) { |
520 |
fail("Unexpected InterruptedException"); |
521 |
} |
522 |
} |
523 |
|
524 |
/** |
525 |
* Fails with message "should throw exception". |
526 |
*/ |
527 |
public void shouldThrow() { |
528 |
fail("Should throw exception"); |
529 |
} |
530 |
|
531 |
/** |
532 |
* Fails with message "should throw " + exceptionName. |
533 |
*/ |
534 |
public void shouldThrow(String exceptionName) { |
535 |
fail("Should throw " + exceptionName); |
536 |
} |
537 |
|
538 |
/** |
539 |
* The number of elements to place in collections, arrays, etc. |
540 |
*/ |
541 |
public static final int SIZE = 20; |
542 |
|
543 |
// Some convenient Integer constants |
544 |
|
545 |
public static final Integer zero = new Integer(0); |
546 |
public static final Integer one = new Integer(1); |
547 |
public static final Integer two = new Integer(2); |
548 |
public static final Integer three = new Integer(3); |
549 |
public static final Integer four = new Integer(4); |
550 |
public static final Integer five = new Integer(5); |
551 |
public static final Integer six = new Integer(6); |
552 |
public static final Integer seven = new Integer(7); |
553 |
public static final Integer eight = new Integer(8); |
554 |
public static final Integer nine = new Integer(9); |
555 |
public static final Integer m1 = new Integer(-1); |
556 |
public static final Integer m2 = new Integer(-2); |
557 |
public static final Integer m3 = new Integer(-3); |
558 |
public static final Integer m4 = new Integer(-4); |
559 |
public static final Integer m5 = new Integer(-5); |
560 |
public static final Integer m6 = new Integer(-6); |
561 |
public static final Integer m10 = new Integer(-10); |
562 |
|
563 |
|
564 |
/** |
565 |
* Runs Runnable r with a security policy that permits precisely |
566 |
* the specified permissions. If there is no current security |
567 |
* manager, the runnable is run twice, both with and without a |
568 |
* security manager. We require that any security manager permit |
569 |
* getPolicy/setPolicy. |
570 |
*/ |
571 |
public void runWithPermissions(Runnable r, Permission... permissions) { |
572 |
SecurityManager sm = System.getSecurityManager(); |
573 |
if (sm == null) { |
574 |
r.run(); |
575 |
Policy savedPolicy = Policy.getPolicy(); |
576 |
try { |
577 |
Policy.setPolicy(permissivePolicy()); |
578 |
System.setSecurityManager(new SecurityManager()); |
579 |
runWithPermissions(r, permissions); |
580 |
} finally { |
581 |
System.setSecurityManager(null); |
582 |
Policy.setPolicy(savedPolicy); |
583 |
} |
584 |
} else { |
585 |
Policy savedPolicy = Policy.getPolicy(); |
586 |
AdjustablePolicy policy = new AdjustablePolicy(permissions); |
587 |
Policy.setPolicy(policy); |
588 |
|
589 |
try { |
590 |
r.run(); |
591 |
} finally { |
592 |
policy.addPermission(new SecurityPermission("setPolicy")); |
593 |
Policy.setPolicy(savedPolicy); |
594 |
} |
595 |
} |
596 |
} |
597 |
|
598 |
/** |
599 |
* Runs a runnable without any permissions. |
600 |
*/ |
601 |
public void runWithoutPermissions(Runnable r) { |
602 |
runWithPermissions(r); |
603 |
} |
604 |
|
605 |
/** |
606 |
* A security policy where new permissions can be dynamically added |
607 |
* or all cleared. |
608 |
*/ |
609 |
public static class AdjustablePolicy extends java.security.Policy { |
610 |
Permissions perms = new Permissions(); |
611 |
AdjustablePolicy(Permission... permissions) { |
612 |
for (Permission permission : permissions) |
613 |
perms.add(permission); |
614 |
} |
615 |
void addPermission(Permission perm) { perms.add(perm); } |
616 |
void clearPermissions() { perms = new Permissions(); } |
617 |
public PermissionCollection getPermissions(CodeSource cs) { |
618 |
return perms; |
619 |
} |
620 |
public PermissionCollection getPermissions(ProtectionDomain pd) { |
621 |
return perms; |
622 |
} |
623 |
public boolean implies(ProtectionDomain pd, Permission p) { |
624 |
return perms.implies(p); |
625 |
} |
626 |
public void refresh() {} |
627 |
} |
628 |
|
629 |
/** |
630 |
* Returns a policy containing all the permissions we ever need. |
631 |
*/ |
632 |
public static Policy permissivePolicy() { |
633 |
return new AdjustablePolicy |
634 |
// Permissions j.u.c. needs directly |
635 |
(new RuntimePermission("modifyThread"), |
636 |
new RuntimePermission("getClassLoader"), |
637 |
new RuntimePermission("setContextClassLoader"), |
638 |
// Permissions needed to change permissions! |
639 |
new SecurityPermission("getPolicy"), |
640 |
new SecurityPermission("setPolicy"), |
641 |
new RuntimePermission("setSecurityManager"), |
642 |
// Permissions needed by the junit test harness |
643 |
new RuntimePermission("accessDeclaredMembers"), |
644 |
new PropertyPermission("*", "read"), |
645 |
new java.io.FilePermission("<<ALL FILES>>", "read")); |
646 |
} |
647 |
|
648 |
/** |
649 |
* Sleeps until the given time has elapsed. |
650 |
* Throws AssertionFailedError if interrupted. |
651 |
*/ |
652 |
void sleep(long millis) { |
653 |
try { |
654 |
delay(millis); |
655 |
} catch (InterruptedException ie) { |
656 |
AssertionFailedError afe = |
657 |
new AssertionFailedError("Unexpected InterruptedException"); |
658 |
afe.initCause(ie); |
659 |
throw afe; |
660 |
} |
661 |
} |
662 |
|
663 |
/** |
664 |
* Waits up to the specified number of milliseconds for the given |
665 |
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
666 |
*/ |
667 |
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
668 |
long timeoutNanos = timeoutMillis * 1000L * 1000L; |
669 |
long t0 = System.nanoTime(); |
670 |
for (;;) { |
671 |
Thread.State s = thread.getState(); |
672 |
if (s == Thread.State.BLOCKED || |
673 |
s == Thread.State.WAITING || |
674 |
s == Thread.State.TIMED_WAITING) |
675 |
return; |
676 |
else if (s == Thread.State.TERMINATED) |
677 |
fail("Unexpected thread termination"); |
678 |
else if (System.nanoTime() - t0 > timeoutNanos) { |
679 |
threadAssertTrue(thread.isAlive()); |
680 |
return; |
681 |
} |
682 |
Thread.yield(); |
683 |
} |
684 |
} |
685 |
|
686 |
/** |
687 |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
688 |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
689 |
*/ |
690 |
void waitForThreadToEnterWaitState(Thread thread) { |
691 |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
692 |
} |
693 |
|
694 |
/** |
695 |
* Returns the number of milliseconds since time given by |
696 |
* startNanoTime, which must have been previously returned from a |
697 |
* call to {@link System.nanoTime()}. |
698 |
*/ |
699 |
long millisElapsedSince(long startNanoTime) { |
700 |
return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime); |
701 |
} |
702 |
|
703 |
/** |
704 |
* Returns a new started daemon Thread running the given runnable. |
705 |
*/ |
706 |
Thread newStartedThread(Runnable runnable) { |
707 |
Thread t = new Thread(runnable); |
708 |
t.setDaemon(true); |
709 |
t.start(); |
710 |
return t; |
711 |
} |
712 |
|
713 |
/** |
714 |
* Waits for the specified time (in milliseconds) for the thread |
715 |
* to terminate (using {@link Thread#join(long)}), else interrupts |
716 |
* the thread (in the hope that it may terminate later) and fails. |
717 |
*/ |
718 |
void awaitTermination(Thread t, long timeoutMillis) { |
719 |
try { |
720 |
t.join(timeoutMillis); |
721 |
} catch (InterruptedException ie) { |
722 |
threadUnexpectedException(ie); |
723 |
} finally { |
724 |
if (t.isAlive()) { |
725 |
t.interrupt(); |
726 |
fail("Test timed out"); |
727 |
} |
728 |
} |
729 |
} |
730 |
|
731 |
/** |
732 |
* Waits for LONG_DELAY_MS milliseconds for the thread to |
733 |
* terminate (using {@link Thread#join(long)}), else interrupts |
734 |
* the thread (in the hope that it may terminate later) and fails. |
735 |
*/ |
736 |
void awaitTermination(Thread t) { |
737 |
awaitTermination(t, LONG_DELAY_MS); |
738 |
} |
739 |
|
740 |
// Some convenient Runnable classes |
741 |
|
742 |
public abstract class CheckedRunnable implements Runnable { |
743 |
protected abstract void realRun() throws Throwable; |
744 |
|
745 |
public final void run() { |
746 |
try { |
747 |
realRun(); |
748 |
} catch (Throwable t) { |
749 |
threadUnexpectedException(t); |
750 |
} |
751 |
} |
752 |
} |
753 |
|
754 |
public abstract class RunnableShouldThrow implements Runnable { |
755 |
protected abstract void realRun() throws Throwable; |
756 |
|
757 |
final Class<?> exceptionClass; |
758 |
|
759 |
<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) { |
760 |
this.exceptionClass = exceptionClass; |
761 |
} |
762 |
|
763 |
public final void run() { |
764 |
try { |
765 |
realRun(); |
766 |
threadShouldThrow(exceptionClass.getSimpleName()); |
767 |
} catch (Throwable t) { |
768 |
if (! exceptionClass.isInstance(t)) |
769 |
threadUnexpectedException(t); |
770 |
} |
771 |
} |
772 |
} |
773 |
|
774 |
public abstract class ThreadShouldThrow extends Thread { |
775 |
protected abstract void realRun() throws Throwable; |
776 |
|
777 |
final Class<?> exceptionClass; |
778 |
|
779 |
<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) { |
780 |
this.exceptionClass = exceptionClass; |
781 |
} |
782 |
|
783 |
public final void run() { |
784 |
try { |
785 |
realRun(); |
786 |
threadShouldThrow(exceptionClass.getSimpleName()); |
787 |
} catch (Throwable t) { |
788 |
if (! exceptionClass.isInstance(t)) |
789 |
threadUnexpectedException(t); |
790 |
} |
791 |
} |
792 |
} |
793 |
|
794 |
public abstract class CheckedInterruptedRunnable implements Runnable { |
795 |
protected abstract void realRun() throws Throwable; |
796 |
|
797 |
public final void run() { |
798 |
try { |
799 |
realRun(); |
800 |
threadShouldThrow("InterruptedException"); |
801 |
} catch (InterruptedException success) { |
802 |
threadAssertFalse(Thread.interrupted()); |
803 |
} catch (Throwable t) { |
804 |
threadUnexpectedException(t); |
805 |
} |
806 |
} |
807 |
} |
808 |
|
809 |
public abstract class CheckedCallable<T> implements Callable<T> { |
810 |
protected abstract T realCall() throws Throwable; |
811 |
|
812 |
public final T call() { |
813 |
try { |
814 |
return realCall(); |
815 |
} catch (Throwable t) { |
816 |
threadUnexpectedException(t); |
817 |
return null; |
818 |
} |
819 |
} |
820 |
} |
821 |
|
822 |
public abstract class CheckedInterruptedCallable<T> |
823 |
implements Callable<T> { |
824 |
protected abstract T realCall() throws Throwable; |
825 |
|
826 |
public final T call() { |
827 |
try { |
828 |
T result = realCall(); |
829 |
threadShouldThrow("InterruptedException"); |
830 |
return result; |
831 |
} catch (InterruptedException success) { |
832 |
threadAssertFalse(Thread.interrupted()); |
833 |
} catch (Throwable t) { |
834 |
threadUnexpectedException(t); |
835 |
} |
836 |
return null; |
837 |
} |
838 |
} |
839 |
|
840 |
public static class NoOpRunnable implements Runnable { |
841 |
public void run() {} |
842 |
} |
843 |
|
844 |
public static class NoOpCallable implements Callable { |
845 |
public Object call() { return Boolean.TRUE; } |
846 |
} |
847 |
|
848 |
public static final String TEST_STRING = "a test string"; |
849 |
|
850 |
public static class StringTask implements Callable<String> { |
851 |
public String call() { return TEST_STRING; } |
852 |
} |
853 |
|
854 |
public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) { |
855 |
return new CheckedCallable<String>() { |
856 |
protected String realCall() { |
857 |
try { |
858 |
latch.await(); |
859 |
} catch (InterruptedException quittingTime) {} |
860 |
return TEST_STRING; |
861 |
}}; |
862 |
} |
863 |
|
864 |
public Runnable awaiter(final CountDownLatch latch) { |
865 |
return new CheckedRunnable() { |
866 |
public void realRun() throws InterruptedException { |
867 |
await(latch); |
868 |
}}; |
869 |
} |
870 |
|
871 |
public void await(CountDownLatch latch) { |
872 |
try { |
873 |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
874 |
} catch (Throwable t) { |
875 |
threadUnexpectedException(t); |
876 |
} |
877 |
} |
878 |
|
879 |
// /** |
880 |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
881 |
// */ |
882 |
// public void await(AtomicBoolean flag) { |
883 |
// await(flag, LONG_DELAY_MS); |
884 |
// } |
885 |
|
886 |
// /** |
887 |
// * Spin-waits up to the specified timeout until flag becomes true. |
888 |
// */ |
889 |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
890 |
// long startTime = System.nanoTime(); |
891 |
// while (!flag.get()) { |
892 |
// if (millisElapsedSince(startTime) > timeoutMillis) |
893 |
// throw new AssertionFailedError("timed out"); |
894 |
// Thread.yield(); |
895 |
// } |
896 |
// } |
897 |
|
898 |
public static class NPETask implements Callable<String> { |
899 |
public String call() { throw new NullPointerException(); } |
900 |
} |
901 |
|
902 |
public static class CallableOne implements Callable<Integer> { |
903 |
public Integer call() { return one; } |
904 |
} |
905 |
|
906 |
public class ShortRunnable extends CheckedRunnable { |
907 |
protected void realRun() throws Throwable { |
908 |
delay(SHORT_DELAY_MS); |
909 |
} |
910 |
} |
911 |
|
912 |
public class ShortInterruptedRunnable extends CheckedInterruptedRunnable { |
913 |
protected void realRun() throws InterruptedException { |
914 |
delay(SHORT_DELAY_MS); |
915 |
} |
916 |
} |
917 |
|
918 |
public class SmallRunnable extends CheckedRunnable { |
919 |
protected void realRun() throws Throwable { |
920 |
delay(SMALL_DELAY_MS); |
921 |
} |
922 |
} |
923 |
|
924 |
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable { |
925 |
protected void realRun() { |
926 |
try { |
927 |
delay(SMALL_DELAY_MS); |
928 |
} catch (InterruptedException ok) {} |
929 |
} |
930 |
} |
931 |
|
932 |
public class SmallCallable extends CheckedCallable { |
933 |
protected Object realCall() throws InterruptedException { |
934 |
delay(SMALL_DELAY_MS); |
935 |
return Boolean.TRUE; |
936 |
} |
937 |
} |
938 |
|
939 |
public class MediumRunnable extends CheckedRunnable { |
940 |
protected void realRun() throws Throwable { |
941 |
delay(MEDIUM_DELAY_MS); |
942 |
} |
943 |
} |
944 |
|
945 |
public class MediumInterruptedRunnable extends CheckedInterruptedRunnable { |
946 |
protected void realRun() throws InterruptedException { |
947 |
delay(MEDIUM_DELAY_MS); |
948 |
} |
949 |
} |
950 |
|
951 |
public Runnable possiblyInterruptedRunnable(final long timeoutMillis) { |
952 |
return new CheckedRunnable() { |
953 |
protected void realRun() { |
954 |
try { |
955 |
delay(timeoutMillis); |
956 |
} catch (InterruptedException ok) {} |
957 |
}}; |
958 |
} |
959 |
|
960 |
public class MediumPossiblyInterruptedRunnable extends CheckedRunnable { |
961 |
protected void realRun() { |
962 |
try { |
963 |
delay(MEDIUM_DELAY_MS); |
964 |
} catch (InterruptedException ok) {} |
965 |
} |
966 |
} |
967 |
|
968 |
public class LongPossiblyInterruptedRunnable extends CheckedRunnable { |
969 |
protected void realRun() { |
970 |
try { |
971 |
delay(LONG_DELAY_MS); |
972 |
} catch (InterruptedException ok) {} |
973 |
} |
974 |
} |
975 |
|
976 |
/** |
977 |
* For use as ThreadFactory in constructors |
978 |
*/ |
979 |
public static class SimpleThreadFactory implements ThreadFactory { |
980 |
public Thread newThread(Runnable r) { |
981 |
return new Thread(r); |
982 |
} |
983 |
} |
984 |
|
985 |
public interface TrackedRunnable extends Runnable { |
986 |
boolean isDone(); |
987 |
} |
988 |
|
989 |
public static TrackedRunnable trackedRunnable(final long timeoutMillis) { |
990 |
return new TrackedRunnable() { |
991 |
private volatile boolean done = false; |
992 |
public boolean isDone() { return done; } |
993 |
public void run() { |
994 |
try { |
995 |
delay(timeoutMillis); |
996 |
done = true; |
997 |
} catch (InterruptedException ok) {} |
998 |
} |
999 |
}; |
1000 |
} |
1001 |
|
1002 |
public static class TrackedShortRunnable implements Runnable { |
1003 |
public volatile boolean done = false; |
1004 |
public void run() { |
1005 |
try { |
1006 |
delay(SHORT_DELAY_MS); |
1007 |
done = true; |
1008 |
} catch (InterruptedException ok) {} |
1009 |
} |
1010 |
} |
1011 |
|
1012 |
public static class TrackedSmallRunnable implements Runnable { |
1013 |
public volatile boolean done = false; |
1014 |
public void run() { |
1015 |
try { |
1016 |
delay(SMALL_DELAY_MS); |
1017 |
done = true; |
1018 |
} catch (InterruptedException ok) {} |
1019 |
} |
1020 |
} |
1021 |
|
1022 |
public static class TrackedMediumRunnable implements Runnable { |
1023 |
public volatile boolean done = false; |
1024 |
public void run() { |
1025 |
try { |
1026 |
delay(MEDIUM_DELAY_MS); |
1027 |
done = true; |
1028 |
} catch (InterruptedException ok) {} |
1029 |
} |
1030 |
} |
1031 |
|
1032 |
public static class TrackedLongRunnable implements Runnable { |
1033 |
public volatile boolean done = false; |
1034 |
public void run() { |
1035 |
try { |
1036 |
delay(LONG_DELAY_MS); |
1037 |
done = true; |
1038 |
} catch (InterruptedException ok) {} |
1039 |
} |
1040 |
} |
1041 |
|
1042 |
public static class TrackedNoOpRunnable implements Runnable { |
1043 |
public volatile boolean done = false; |
1044 |
public void run() { |
1045 |
done = true; |
1046 |
} |
1047 |
} |
1048 |
|
1049 |
public static class TrackedCallable implements Callable { |
1050 |
public volatile boolean done = false; |
1051 |
public Object call() { |
1052 |
try { |
1053 |
delay(SMALL_DELAY_MS); |
1054 |
done = true; |
1055 |
} catch (InterruptedException ok) {} |
1056 |
return Boolean.TRUE; |
1057 |
} |
1058 |
} |
1059 |
|
1060 |
/** |
1061 |
* Analog of CheckedRunnable for RecursiveAction |
1062 |
*/ |
1063 |
public abstract class CheckedRecursiveAction extends RecursiveAction { |
1064 |
protected abstract void realCompute() throws Throwable; |
1065 |
|
1066 |
public final void compute() { |
1067 |
try { |
1068 |
realCompute(); |
1069 |
} catch (Throwable t) { |
1070 |
threadUnexpectedException(t); |
1071 |
} |
1072 |
} |
1073 |
} |
1074 |
|
1075 |
/** |
1076 |
* Analog of CheckedCallable for RecursiveTask |
1077 |
*/ |
1078 |
public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> { |
1079 |
protected abstract T realCompute() throws Throwable; |
1080 |
|
1081 |
public final T compute() { |
1082 |
try { |
1083 |
return realCompute(); |
1084 |
} catch (Throwable t) { |
1085 |
threadUnexpectedException(t); |
1086 |
return null; |
1087 |
} |
1088 |
} |
1089 |
} |
1090 |
|
1091 |
/** |
1092 |
* For use as RejectedExecutionHandler in constructors |
1093 |
*/ |
1094 |
public static class NoOpREHandler implements RejectedExecutionHandler { |
1095 |
public void rejectedExecution(Runnable r, |
1096 |
ThreadPoolExecutor executor) {} |
1097 |
} |
1098 |
|
1099 |
/** |
1100 |
* A CyclicBarrier that fails with AssertionFailedErrors instead |
1101 |
* of throwing checked exceptions. |
1102 |
*/ |
1103 |
public class CheckedBarrier extends CyclicBarrier { |
1104 |
public CheckedBarrier(int parties) { super(parties); } |
1105 |
|
1106 |
public int await() { |
1107 |
try { |
1108 |
return super.await(); |
1109 |
} catch (Exception e) { |
1110 |
AssertionFailedError afe = |
1111 |
new AssertionFailedError("Unexpected exception: " + e); |
1112 |
afe.initCause(e); |
1113 |
throw afe; |
1114 |
} |
1115 |
} |
1116 |
} |
1117 |
|
1118 |
void checkEmpty(BlockingQueue q) { |
1119 |
try { |
1120 |
assertTrue(q.isEmpty()); |
1121 |
assertEquals(0, q.size()); |
1122 |
assertNull(q.peek()); |
1123 |
assertNull(q.poll()); |
1124 |
assertNull(q.poll(0, MILLISECONDS)); |
1125 |
assertEquals(q.toString(), "[]"); |
1126 |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
1127 |
assertFalse(q.iterator().hasNext()); |
1128 |
try { |
1129 |
q.element(); |
1130 |
shouldThrow(); |
1131 |
} catch (NoSuchElementException success) {} |
1132 |
try { |
1133 |
q.iterator().next(); |
1134 |
shouldThrow(); |
1135 |
} catch (NoSuchElementException success) {} |
1136 |
try { |
1137 |
q.remove(); |
1138 |
shouldThrow(); |
1139 |
} catch (NoSuchElementException success) {} |
1140 |
} catch (InterruptedException ie) { |
1141 |
threadUnexpectedException(ie); |
1142 |
} |
1143 |
} |
1144 |
|
1145 |
@SuppressWarnings("unchecked") |
1146 |
<T> T serialClone(T o) { |
1147 |
try { |
1148 |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1149 |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1150 |
oos.writeObject(o); |
1151 |
oos.flush(); |
1152 |
oos.close(); |
1153 |
ByteArrayInputStream bin = |
1154 |
new ByteArrayInputStream(bos.toByteArray()); |
1155 |
ObjectInputStream ois = new ObjectInputStream(bin); |
1156 |
return (T) ois.readObject(); |
1157 |
} catch (Throwable t) { |
1158 |
threadUnexpectedException(t); |
1159 |
return null; |
1160 |
} |
1161 |
} |
1162 |
} |