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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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/* |
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* @test |
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* @summary JSR-166 tck tests |
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* @modules java.management |
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* @build * |
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* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase |
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*/ |
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|
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.MINUTES; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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|
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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.lang.management.ManagementFactory; |
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import java.lang.management.ThreadInfo; |
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import java.lang.management.ThreadMXBean; |
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import java.lang.reflect.Constructor; |
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import java.lang.reflect.Method; |
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import java.lang.reflect.Modifier; |
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import java.nio.file.Files; |
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import java.nio.file.Paths; |
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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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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.Iterator; |
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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.BlockingQueue; |
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import java.util.concurrent.Callable; |
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import java.util.concurrent.CountDownLatch; |
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import java.util.concurrent.CyclicBarrier; |
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import java.util.concurrent.ExecutionException; |
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import java.util.concurrent.Executors; |
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import java.util.concurrent.ExecutorService; |
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import java.util.concurrent.ForkJoinPool; |
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import java.util.concurrent.Future; |
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import java.util.concurrent.RecursiveAction; |
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import java.util.concurrent.RecursiveTask; |
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import java.util.concurrent.RejectedExecutionHandler; |
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import java.util.concurrent.Semaphore; |
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import java.util.concurrent.ThreadFactory; |
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import java.util.concurrent.ThreadPoolExecutor; |
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import java.util.concurrent.TimeoutException; |
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import java.util.concurrent.atomic.AtomicReference; |
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import java.util.regex.Matcher; |
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import java.util.regex.Pattern; |
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|
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import junit.framework.AssertionFailedError; |
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import junit.framework.Test; |
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import junit.framework.TestCase; |
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import junit.framework.TestResult; |
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import junit.framework.TestSuite; |
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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 |
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* {@code fail}, {@code assertTrue}, etc.) It is OK (but not |
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* 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. |
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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. |
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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. |
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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. |
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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 isolation. |
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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. |
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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. |
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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. |
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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. |
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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, also run tests that are not part of the official tck |
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* because they test unspecified implementation details. |
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*/ |
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protected static final boolean testImplementationDetails = |
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Boolean.getBoolean("jsr166.testImplementationDetails"); |
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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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/** |
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* The number of repetitions per test (for tickling rare bugs). |
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*/ |
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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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/** |
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* The number of repetitions of the test suite (for finding leaks?). |
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*/ |
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private static final int suiteRuns = |
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Integer.getInteger("jsr166.suiteRuns", 1); |
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|
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/** |
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* The scaling factor to apply to standard delays used in tests. |
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*/ |
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private static final int delayFactor = |
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Integer.getInteger("jsr166.delay.factor", 1); |
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|
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public JSR166TestCase() { super(); } |
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public JSR166TestCase(String name) { super(name); } |
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|
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/** |
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* A filter for tests to run, matching strings of the form |
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* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)" |
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* Usefully combined with jsr166.runsPerTest. |
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*/ |
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private static final Pattern methodFilter = methodFilter(); |
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|
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private static Pattern methodFilter() { |
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String regex = System.getProperty("jsr166.methodFilter"); |
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return (regex == null) ? null : Pattern.compile(regex); |
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} |
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|
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// Instrumentation to debug very rare, but very annoying hung test runs. |
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static volatile TestCase currentTestCase; |
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// static volatile int currentRun = 0; |
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static { |
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Runnable checkForWedgedTest = new Runnable() { public void run() { |
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// Avoid spurious reports with enormous runsPerTest. |
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// A single test case run should never take more than 1 second. |
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// But let's cap it at the high end too ... |
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final int timeoutMinutes = |
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Math.min(15, Math.max(runsPerTest / 60, 1)); |
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for (TestCase lastTestCase = currentTestCase;;) { |
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try { MINUTES.sleep(timeoutMinutes); } |
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catch (InterruptedException unexpected) { break; } |
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if (lastTestCase == currentTestCase) { |
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System.err.printf( |
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"Looks like we're stuck running test: %s%n", |
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lastTestCase); |
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// System.err.printf( |
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// "Looks like we're stuck running test: %s (%d/%d)%n", |
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// lastTestCase, currentRun, runsPerTest); |
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// System.err.println("availableProcessors=" + |
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// Runtime.getRuntime().availableProcessors()); |
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// System.err.printf("cpu model = %s%n", cpuModel()); |
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dumpTestThreads(); |
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// one stack dump is probably enough; more would be spam |
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break; |
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} |
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lastTestCase = currentTestCase; |
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}}}; |
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Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest"); |
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thread.setDaemon(true); |
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thread.start(); |
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} |
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|
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// public static String cpuModel() { |
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// try { |
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// Matcher matcher = Pattern.compile("model name\\s*: (.*)") |
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// .matcher(new String( |
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// Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8")); |
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// matcher.find(); |
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// return matcher.group(1); |
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// } catch (Exception ex) { return null; } |
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// } |
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|
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public void runBare() throws Throwable { |
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currentTestCase = this; |
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if (methodFilter == null |
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|| methodFilter.matcher(toString()).find()) |
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super.runBare(); |
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} |
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|
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protected void runTest() throws Throwable { |
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for (int i = 0; i < runsPerTest; i++) { |
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// currentRun = i; |
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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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|
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protected void runTestProfiled() throws Throwable { |
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for (int i = 0; i < 2; i++) { |
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long startTime = System.nanoTime(); |
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super.runTest(); |
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long elapsedMillis = millisElapsedSince(startTime); |
273 |
if (elapsedMillis < profileThreshold) |
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break; |
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// Never report first run of any test; treat it as a |
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// warmup run, notably to trigger all needed classloading, |
277 |
if (i > 0) |
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System.out.printf("%n%s: %d%n", toString(), elapsedMillis); |
279 |
} |
280 |
} |
281 |
|
282 |
/** |
283 |
* Runs all JSR166 unit tests using junit.textui.TestRunner. |
284 |
*/ |
285 |
public static void main(String[] args) { |
286 |
main(suite(), args); |
287 |
} |
288 |
|
289 |
static class PithyResultPrinter extends junit.textui.ResultPrinter { |
290 |
PithyResultPrinter(java.io.PrintStream writer) { super(writer); } |
291 |
long runTime; |
292 |
public void startTest(Test test) {} |
293 |
protected void printHeader(long runTime) { |
294 |
this.runTime = runTime; // defer printing for later |
295 |
} |
296 |
protected void printFooter(TestResult result) { |
297 |
if (result.wasSuccessful()) { |
298 |
getWriter().println("OK (" + result.runCount() + " tests)" |
299 |
+ " Time: " + elapsedTimeAsString(runTime)); |
300 |
} else { |
301 |
getWriter().println("Time: " + elapsedTimeAsString(runTime)); |
302 |
super.printFooter(result); |
303 |
} |
304 |
} |
305 |
} |
306 |
|
307 |
/** |
308 |
* Returns a TestRunner that doesn't bother with unnecessary |
309 |
* fluff, like printing a "." for each test case. |
310 |
*/ |
311 |
static junit.textui.TestRunner newPithyTestRunner() { |
312 |
junit.textui.TestRunner runner = new junit.textui.TestRunner(); |
313 |
runner.setPrinter(new PithyResultPrinter(System.out)); |
314 |
return runner; |
315 |
} |
316 |
|
317 |
/** |
318 |
* Runs all unit tests in the given test suite. |
319 |
* Actual behavior influenced by jsr166.* system properties. |
320 |
*/ |
321 |
static void main(Test suite, String[] args) { |
322 |
if (useSecurityManager) { |
323 |
System.err.println("Setting a permissive security manager"); |
324 |
Policy.setPolicy(permissivePolicy()); |
325 |
System.setSecurityManager(new SecurityManager()); |
326 |
} |
327 |
for (int i = 0; i < suiteRuns; i++) { |
328 |
TestResult result = newPithyTestRunner().doRun(suite); |
329 |
if (!result.wasSuccessful()) |
330 |
System.exit(1); |
331 |
System.gc(); |
332 |
System.runFinalization(); |
333 |
} |
334 |
} |
335 |
|
336 |
public static TestSuite newTestSuite(Object... suiteOrClasses) { |
337 |
TestSuite suite = new TestSuite(); |
338 |
for (Object suiteOrClass : suiteOrClasses) { |
339 |
if (suiteOrClass instanceof TestSuite) |
340 |
suite.addTest((TestSuite) suiteOrClass); |
341 |
else if (suiteOrClass instanceof Class) |
342 |
suite.addTest(new TestSuite((Class<?>) suiteOrClass)); |
343 |
else |
344 |
throw new ClassCastException("not a test suite or class"); |
345 |
} |
346 |
return suite; |
347 |
} |
348 |
|
349 |
public static void addNamedTestClasses(TestSuite suite, |
350 |
String... testClassNames) { |
351 |
for (String testClassName : testClassNames) { |
352 |
try { |
353 |
Class<?> testClass = Class.forName(testClassName); |
354 |
Method m = testClass.getDeclaredMethod("suite", |
355 |
new Class<?>[0]); |
356 |
suite.addTest(newTestSuite((Test)m.invoke(null))); |
357 |
} catch (Exception e) { |
358 |
throw new Error("Missing test class", e); |
359 |
} |
360 |
} |
361 |
} |
362 |
|
363 |
public static final double JAVA_CLASS_VERSION; |
364 |
public static final String JAVA_SPECIFICATION_VERSION; |
365 |
static { |
366 |
try { |
367 |
JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged( |
368 |
new java.security.PrivilegedAction<Double>() { |
369 |
public Double run() { |
370 |
return Double.valueOf(System.getProperty("java.class.version"));}}); |
371 |
JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged( |
372 |
new java.security.PrivilegedAction<String>() { |
373 |
public String run() { |
374 |
return System.getProperty("java.specification.version");}}); |
375 |
} catch (Throwable t) { |
376 |
throw new Error(t); |
377 |
} |
378 |
} |
379 |
|
380 |
public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; } |
381 |
public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; } |
382 |
public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; } |
383 |
public static boolean atLeastJava9() { |
384 |
return JAVA_CLASS_VERSION >= 53.0 |
385 |
// As of 2015-09, java9 still uses 52.0 class file version |
386 |
|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$"); |
387 |
} |
388 |
public static boolean atLeastJava10() { |
389 |
return JAVA_CLASS_VERSION >= 54.0 |
390 |
|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$"); |
391 |
} |
392 |
|
393 |
/** |
394 |
* Collects all JSR166 unit tests as one suite. |
395 |
*/ |
396 |
public static Test suite() { |
397 |
// Java7+ test classes |
398 |
TestSuite suite = newTestSuite( |
399 |
ForkJoinPoolTest.suite(), |
400 |
ForkJoinTaskTest.suite(), |
401 |
RecursiveActionTest.suite(), |
402 |
RecursiveTaskTest.suite(), |
403 |
LinkedTransferQueueTest.suite(), |
404 |
PhaserTest.suite(), |
405 |
ThreadLocalRandomTest.suite(), |
406 |
AbstractExecutorServiceTest.suite(), |
407 |
AbstractQueueTest.suite(), |
408 |
AbstractQueuedSynchronizerTest.suite(), |
409 |
AbstractQueuedLongSynchronizerTest.suite(), |
410 |
ArrayBlockingQueueTest.suite(), |
411 |
ArrayDequeTest.suite(), |
412 |
AtomicBooleanTest.suite(), |
413 |
AtomicIntegerArrayTest.suite(), |
414 |
AtomicIntegerFieldUpdaterTest.suite(), |
415 |
AtomicIntegerTest.suite(), |
416 |
AtomicLongArrayTest.suite(), |
417 |
AtomicLongFieldUpdaterTest.suite(), |
418 |
AtomicLongTest.suite(), |
419 |
AtomicMarkableReferenceTest.suite(), |
420 |
AtomicReferenceArrayTest.suite(), |
421 |
AtomicReferenceFieldUpdaterTest.suite(), |
422 |
AtomicReferenceTest.suite(), |
423 |
AtomicStampedReferenceTest.suite(), |
424 |
ConcurrentHashMapTest.suite(), |
425 |
ConcurrentLinkedDequeTest.suite(), |
426 |
ConcurrentLinkedQueueTest.suite(), |
427 |
ConcurrentSkipListMapTest.suite(), |
428 |
ConcurrentSkipListSubMapTest.suite(), |
429 |
ConcurrentSkipListSetTest.suite(), |
430 |
ConcurrentSkipListSubSetTest.suite(), |
431 |
CopyOnWriteArrayListTest.suite(), |
432 |
CopyOnWriteArraySetTest.suite(), |
433 |
CountDownLatchTest.suite(), |
434 |
CyclicBarrierTest.suite(), |
435 |
DelayQueueTest.suite(), |
436 |
EntryTest.suite(), |
437 |
ExchangerTest.suite(), |
438 |
ExecutorsTest.suite(), |
439 |
ExecutorCompletionServiceTest.suite(), |
440 |
FutureTaskTest.suite(), |
441 |
LinkedBlockingDequeTest.suite(), |
442 |
LinkedBlockingQueueTest.suite(), |
443 |
LinkedListTest.suite(), |
444 |
LockSupportTest.suite(), |
445 |
PriorityBlockingQueueTest.suite(), |
446 |
PriorityQueueTest.suite(), |
447 |
ReentrantLockTest.suite(), |
448 |
ReentrantReadWriteLockTest.suite(), |
449 |
ScheduledExecutorTest.suite(), |
450 |
ScheduledExecutorSubclassTest.suite(), |
451 |
SemaphoreTest.suite(), |
452 |
SynchronousQueueTest.suite(), |
453 |
SystemTest.suite(), |
454 |
ThreadLocalTest.suite(), |
455 |
ThreadPoolExecutorTest.suite(), |
456 |
ThreadPoolExecutorSubclassTest.suite(), |
457 |
ThreadTest.suite(), |
458 |
TimeUnitTest.suite(), |
459 |
TreeMapTest.suite(), |
460 |
TreeSetTest.suite(), |
461 |
TreeSubMapTest.suite(), |
462 |
TreeSubSetTest.suite()); |
463 |
|
464 |
// Java8+ test classes |
465 |
if (atLeastJava8()) { |
466 |
String[] java8TestClassNames = { |
467 |
"Atomic8Test", |
468 |
"CompletableFutureTest", |
469 |
"ConcurrentHashMap8Test", |
470 |
"CountedCompleterTest", |
471 |
"DoubleAccumulatorTest", |
472 |
"DoubleAdderTest", |
473 |
"ForkJoinPool8Test", |
474 |
"ForkJoinTask8Test", |
475 |
"LongAccumulatorTest", |
476 |
"LongAdderTest", |
477 |
"SplittableRandomTest", |
478 |
"StampedLockTest", |
479 |
"SubmissionPublisherTest", |
480 |
"ThreadLocalRandom8Test", |
481 |
}; |
482 |
addNamedTestClasses(suite, java8TestClassNames); |
483 |
} |
484 |
|
485 |
// Java9+ test classes |
486 |
if (atLeastJava9()) { |
487 |
String[] java9TestClassNames = { |
488 |
// Currently empty, but expecting varhandle tests |
489 |
}; |
490 |
addNamedTestClasses(suite, java9TestClassNames); |
491 |
} |
492 |
|
493 |
return suite; |
494 |
} |
495 |
|
496 |
/** Returns list of junit-style test method names in given class. */ |
497 |
public static ArrayList<String> testMethodNames(Class<?> testClass) { |
498 |
Method[] methods = testClass.getDeclaredMethods(); |
499 |
ArrayList<String> names = new ArrayList<String>(methods.length); |
500 |
for (Method method : methods) { |
501 |
if (method.getName().startsWith("test") |
502 |
&& Modifier.isPublic(method.getModifiers()) |
503 |
// method.getParameterCount() requires jdk8+ |
504 |
&& method.getParameterTypes().length == 0) { |
505 |
names.add(method.getName()); |
506 |
} |
507 |
} |
508 |
return names; |
509 |
} |
510 |
|
511 |
/** |
512 |
* Returns junit-style testSuite for the given test class, but |
513 |
* parameterized by passing extra data to each test. |
514 |
*/ |
515 |
public static <ExtraData> Test parameterizedTestSuite |
516 |
(Class<? extends JSR166TestCase> testClass, |
517 |
Class<ExtraData> dataClass, |
518 |
ExtraData data) { |
519 |
try { |
520 |
TestSuite suite = new TestSuite(); |
521 |
Constructor c = |
522 |
testClass.getDeclaredConstructor(dataClass, String.class); |
523 |
for (String methodName : testMethodNames(testClass)) |
524 |
suite.addTest((Test) c.newInstance(data, methodName)); |
525 |
return suite; |
526 |
} catch (Exception e) { |
527 |
throw new Error(e); |
528 |
} |
529 |
} |
530 |
|
531 |
/** |
532 |
* Returns junit-style testSuite for the jdk8 extension of the |
533 |
* given test class, but parameterized by passing extra data to |
534 |
* each test. Uses reflection to allow compilation in jdk7. |
535 |
*/ |
536 |
public static <ExtraData> Test jdk8ParameterizedTestSuite |
537 |
(Class<? extends JSR166TestCase> testClass, |
538 |
Class<ExtraData> dataClass, |
539 |
ExtraData data) { |
540 |
if (atLeastJava8()) { |
541 |
String name = testClass.getName(); |
542 |
String name8 = name.replaceAll("Test$", "8Test"); |
543 |
if (name.equals(name8)) throw new Error(name); |
544 |
try { |
545 |
return (Test) |
546 |
Class.forName(name8) |
547 |
.getMethod("testSuite", new Class[] { dataClass }) |
548 |
.invoke(null, data); |
549 |
} catch (Exception e) { |
550 |
throw new Error(e); |
551 |
} |
552 |
} else { |
553 |
return new TestSuite(); |
554 |
} |
555 |
} |
556 |
|
557 |
// Delays for timing-dependent tests, in milliseconds. |
558 |
|
559 |
public static long SHORT_DELAY_MS; |
560 |
public static long SMALL_DELAY_MS; |
561 |
public static long MEDIUM_DELAY_MS; |
562 |
public static long LONG_DELAY_MS; |
563 |
|
564 |
/** |
565 |
* Returns the shortest timed delay. This can be scaled up for |
566 |
* slow machines using the jsr166.delay.factor system property. |
567 |
*/ |
568 |
protected long getShortDelay() { |
569 |
return 50 * delayFactor; |
570 |
} |
571 |
|
572 |
/** |
573 |
* Sets delays as multiples of SHORT_DELAY. |
574 |
*/ |
575 |
protected void setDelays() { |
576 |
SHORT_DELAY_MS = getShortDelay(); |
577 |
SMALL_DELAY_MS = SHORT_DELAY_MS * 5; |
578 |
MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10; |
579 |
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
580 |
} |
581 |
|
582 |
/** |
583 |
* Returns a timeout in milliseconds to be used in tests that |
584 |
* verify that operations block or time out. |
585 |
*/ |
586 |
long timeoutMillis() { |
587 |
return SHORT_DELAY_MS / 4; |
588 |
} |
589 |
|
590 |
/** |
591 |
* Returns a new Date instance representing a time at least |
592 |
* delayMillis milliseconds in the future. |
593 |
*/ |
594 |
Date delayedDate(long delayMillis) { |
595 |
// Add 1 because currentTimeMillis is known to round into the past. |
596 |
return new Date(System.currentTimeMillis() + delayMillis + 1); |
597 |
} |
598 |
|
599 |
/** |
600 |
* The first exception encountered if any threadAssertXXX method fails. |
601 |
*/ |
602 |
private final AtomicReference<Throwable> threadFailure |
603 |
= new AtomicReference<Throwable>(null); |
604 |
|
605 |
/** |
606 |
* Records an exception so that it can be rethrown later in the test |
607 |
* harness thread, triggering a test case failure. Only the first |
608 |
* failure is recorded; subsequent calls to this method from within |
609 |
* the same test have no effect. |
610 |
*/ |
611 |
public void threadRecordFailure(Throwable t) { |
612 |
System.err.println(t); |
613 |
dumpTestThreads(); |
614 |
threadFailure.compareAndSet(null, t); |
615 |
} |
616 |
|
617 |
public void setUp() { |
618 |
setDelays(); |
619 |
} |
620 |
|
621 |
void tearDownFail(String format, Object... args) { |
622 |
String msg = toString() + ": " + String.format(format, args); |
623 |
System.err.println(msg); |
624 |
dumpTestThreads(); |
625 |
throw new AssertionFailedError(msg); |
626 |
} |
627 |
|
628 |
/** |
629 |
* Extra checks that get done for all test cases. |
630 |
* |
631 |
* Triggers test case failure if any thread assertions have failed, |
632 |
* by rethrowing, in the test harness thread, any exception recorded |
633 |
* earlier by threadRecordFailure. |
634 |
* |
635 |
* Triggers test case failure if interrupt status is set in the main thread. |
636 |
*/ |
637 |
public void tearDown() throws Exception { |
638 |
Throwable t = threadFailure.getAndSet(null); |
639 |
if (t != null) { |
640 |
if (t instanceof Error) |
641 |
throw (Error) t; |
642 |
else if (t instanceof RuntimeException) |
643 |
throw (RuntimeException) t; |
644 |
else if (t instanceof Exception) |
645 |
throw (Exception) t; |
646 |
else { |
647 |
AssertionFailedError afe = |
648 |
new AssertionFailedError(t.toString()); |
649 |
afe.initCause(t); |
650 |
throw afe; |
651 |
} |
652 |
} |
653 |
|
654 |
if (Thread.interrupted()) |
655 |
tearDownFail("interrupt status set in main thread"); |
656 |
|
657 |
checkForkJoinPoolThreadLeaks(); |
658 |
} |
659 |
|
660 |
/** |
661 |
* Finds missing PoolCleaners |
662 |
*/ |
663 |
void checkForkJoinPoolThreadLeaks() throws InterruptedException { |
664 |
Thread[] survivors = new Thread[7]; |
665 |
int count = Thread.enumerate(survivors); |
666 |
for (int i = 0; i < count; i++) { |
667 |
Thread thread = survivors[i]; |
668 |
String name = thread.getName(); |
669 |
if (name.startsWith("ForkJoinPool-")) { |
670 |
// give thread some time to terminate |
671 |
thread.join(LONG_DELAY_MS); |
672 |
if (thread.isAlive()) |
673 |
tearDownFail("Found leaked ForkJoinPool thread thread=%s", |
674 |
thread); |
675 |
} |
676 |
} |
677 |
|
678 |
if (!ForkJoinPool.commonPool() |
679 |
.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS)) |
680 |
tearDownFail("ForkJoin common pool thread stuck"); |
681 |
} |
682 |
|
683 |
/** |
684 |
* Just like fail(reason), but additionally recording (using |
685 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
686 |
* the current testcase will fail. |
687 |
*/ |
688 |
public void threadFail(String reason) { |
689 |
try { |
690 |
fail(reason); |
691 |
} catch (AssertionFailedError t) { |
692 |
threadRecordFailure(t); |
693 |
throw t; |
694 |
} |
695 |
} |
696 |
|
697 |
/** |
698 |
* Just like assertTrue(b), but additionally recording (using |
699 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
700 |
* the current testcase will fail. |
701 |
*/ |
702 |
public void threadAssertTrue(boolean b) { |
703 |
try { |
704 |
assertTrue(b); |
705 |
} catch (AssertionFailedError t) { |
706 |
threadRecordFailure(t); |
707 |
throw t; |
708 |
} |
709 |
} |
710 |
|
711 |
/** |
712 |
* Just like assertFalse(b), but additionally recording (using |
713 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
714 |
* the current testcase will fail. |
715 |
*/ |
716 |
public void threadAssertFalse(boolean b) { |
717 |
try { |
718 |
assertFalse(b); |
719 |
} catch (AssertionFailedError t) { |
720 |
threadRecordFailure(t); |
721 |
throw t; |
722 |
} |
723 |
} |
724 |
|
725 |
/** |
726 |
* Just like assertNull(x), but additionally recording (using |
727 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
728 |
* the current testcase will fail. |
729 |
*/ |
730 |
public void threadAssertNull(Object x) { |
731 |
try { |
732 |
assertNull(x); |
733 |
} catch (AssertionFailedError t) { |
734 |
threadRecordFailure(t); |
735 |
throw t; |
736 |
} |
737 |
} |
738 |
|
739 |
/** |
740 |
* Just like assertEquals(x, y), but additionally recording (using |
741 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
742 |
* the current testcase will fail. |
743 |
*/ |
744 |
public void threadAssertEquals(long x, long y) { |
745 |
try { |
746 |
assertEquals(x, y); |
747 |
} catch (AssertionFailedError t) { |
748 |
threadRecordFailure(t); |
749 |
throw t; |
750 |
} |
751 |
} |
752 |
|
753 |
/** |
754 |
* Just like assertEquals(x, y), but additionally recording (using |
755 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
756 |
* the current testcase will fail. |
757 |
*/ |
758 |
public void threadAssertEquals(Object x, Object y) { |
759 |
try { |
760 |
assertEquals(x, y); |
761 |
} catch (AssertionFailedError fail) { |
762 |
threadRecordFailure(fail); |
763 |
throw fail; |
764 |
} catch (Throwable fail) { |
765 |
threadUnexpectedException(fail); |
766 |
} |
767 |
} |
768 |
|
769 |
/** |
770 |
* Just like assertSame(x, y), but additionally recording (using |
771 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
772 |
* the current testcase will fail. |
773 |
*/ |
774 |
public void threadAssertSame(Object x, Object y) { |
775 |
try { |
776 |
assertSame(x, y); |
777 |
} catch (AssertionFailedError fail) { |
778 |
threadRecordFailure(fail); |
779 |
throw fail; |
780 |
} |
781 |
} |
782 |
|
783 |
/** |
784 |
* Calls threadFail with message "should throw exception". |
785 |
*/ |
786 |
public void threadShouldThrow() { |
787 |
threadFail("should throw exception"); |
788 |
} |
789 |
|
790 |
/** |
791 |
* Calls threadFail with message "should throw" + exceptionName. |
792 |
*/ |
793 |
public void threadShouldThrow(String exceptionName) { |
794 |
threadFail("should throw " + exceptionName); |
795 |
} |
796 |
|
797 |
/** |
798 |
* Records the given exception using {@link #threadRecordFailure}, |
799 |
* then rethrows the exception, wrapping it in an |
800 |
* AssertionFailedError if necessary. |
801 |
*/ |
802 |
public void threadUnexpectedException(Throwable t) { |
803 |
threadRecordFailure(t); |
804 |
t.printStackTrace(); |
805 |
if (t instanceof RuntimeException) |
806 |
throw (RuntimeException) t; |
807 |
else if (t instanceof Error) |
808 |
throw (Error) t; |
809 |
else { |
810 |
AssertionFailedError afe = |
811 |
new AssertionFailedError("unexpected exception: " + t); |
812 |
afe.initCause(t); |
813 |
throw afe; |
814 |
} |
815 |
} |
816 |
|
817 |
/** |
818 |
* Delays, via Thread.sleep, for the given millisecond delay, but |
819 |
* if the sleep is shorter than specified, may re-sleep or yield |
820 |
* until time elapses. Ensures that the given time, as measured |
821 |
* by System.nanoTime(), has elapsed. |
822 |
*/ |
823 |
static void delay(long millis) throws InterruptedException { |
824 |
long nanos = millis * (1000 * 1000); |
825 |
final long wakeupTime = System.nanoTime() + nanos; |
826 |
do { |
827 |
if (millis > 0L) |
828 |
Thread.sleep(millis); |
829 |
else // too short to sleep |
830 |
Thread.yield(); |
831 |
nanos = wakeupTime - System.nanoTime(); |
832 |
millis = nanos / (1000 * 1000); |
833 |
} while (nanos >= 0L); |
834 |
} |
835 |
|
836 |
/** |
837 |
* Allows use of try-with-resources with per-test thread pools. |
838 |
*/ |
839 |
class PoolCleaner implements AutoCloseable { |
840 |
private final ExecutorService pool; |
841 |
public PoolCleaner(ExecutorService pool) { this.pool = pool; } |
842 |
public void close() { joinPool(pool); } |
843 |
} |
844 |
|
845 |
/** |
846 |
* An extension of PoolCleaner that has an action to release the pool. |
847 |
*/ |
848 |
class PoolCleanerWithReleaser extends PoolCleaner { |
849 |
private final Runnable releaser; |
850 |
public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) { |
851 |
super(pool); |
852 |
this.releaser = releaser; |
853 |
} |
854 |
public void close() { |
855 |
try { |
856 |
releaser.run(); |
857 |
} finally { |
858 |
super.close(); |
859 |
} |
860 |
} |
861 |
} |
862 |
|
863 |
PoolCleaner cleaner(ExecutorService pool) { |
864 |
return new PoolCleaner(pool); |
865 |
} |
866 |
|
867 |
PoolCleaner cleaner(ExecutorService pool, Runnable releaser) { |
868 |
return new PoolCleanerWithReleaser(pool, releaser); |
869 |
} |
870 |
|
871 |
PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) { |
872 |
return new PoolCleanerWithReleaser(pool, releaser(latch)); |
873 |
} |
874 |
|
875 |
Runnable releaser(final CountDownLatch latch) { |
876 |
return new Runnable() { public void run() { |
877 |
do { latch.countDown(); } |
878 |
while (latch.getCount() > 0); |
879 |
}}; |
880 |
} |
881 |
|
882 |
/** |
883 |
* Waits out termination of a thread pool or fails doing so. |
884 |
*/ |
885 |
void joinPool(ExecutorService pool) { |
886 |
try { |
887 |
pool.shutdown(); |
888 |
if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) { |
889 |
try { |
890 |
threadFail("ExecutorService " + pool + |
891 |
" did not terminate in a timely manner"); |
892 |
} finally { |
893 |
// last resort, for the benefit of subsequent tests |
894 |
pool.shutdownNow(); |
895 |
pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS); |
896 |
} |
897 |
} |
898 |
} catch (SecurityException ok) { |
899 |
// Allowed in case test doesn't have privs |
900 |
} catch (InterruptedException fail) { |
901 |
threadFail("Unexpected InterruptedException"); |
902 |
} |
903 |
} |
904 |
|
905 |
/** Like Runnable, but with the freedom to throw anything */ |
906 |
interface Action { public void run() throws Throwable; } |
907 |
|
908 |
/** |
909 |
* Runs all the given actions in parallel, failing if any fail. |
910 |
* Useful for running multiple variants of tests that are |
911 |
* necessarily individually slow because they must block. |
912 |
*/ |
913 |
void testInParallel(Action ... actions) { |
914 |
ExecutorService pool = Executors.newCachedThreadPool(); |
915 |
try (PoolCleaner cleaner = cleaner(pool)) { |
916 |
ArrayList<Future<?>> futures = new ArrayList<>(actions.length); |
917 |
for (final Action action : actions) |
918 |
futures.add(pool.submit(new CheckedRunnable() { |
919 |
public void realRun() throws Throwable { action.run();}})); |
920 |
for (Future<?> future : futures) |
921 |
try { |
922 |
assertNull(future.get(LONG_DELAY_MS, MILLISECONDS)); |
923 |
} catch (ExecutionException ex) { |
924 |
threadUnexpectedException(ex.getCause()); |
925 |
} catch (Exception ex) { |
926 |
threadUnexpectedException(ex); |
927 |
} |
928 |
} |
929 |
} |
930 |
|
931 |
/** |
932 |
* A debugging tool to print stack traces of most threads, as jstack does. |
933 |
* Uninteresting threads are filtered out. |
934 |
*/ |
935 |
static void dumpTestThreads() { |
936 |
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); |
937 |
System.err.println("------ stacktrace dump start ------"); |
938 |
for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) { |
939 |
String name = info.getThreadName(); |
940 |
if ("Signal Dispatcher".equals(name)) |
941 |
continue; |
942 |
if ("Reference Handler".equals(name) |
943 |
&& info.getLockName().startsWith("java.lang.ref.Reference$Lock")) |
944 |
continue; |
945 |
if ("Finalizer".equals(name) |
946 |
&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock")) |
947 |
continue; |
948 |
if ("checkForWedgedTest".equals(name)) |
949 |
continue; |
950 |
System.err.print(info); |
951 |
} |
952 |
System.err.println("------ stacktrace dump end ------"); |
953 |
} |
954 |
|
955 |
/** |
956 |
* Checks that thread does not terminate within the default |
957 |
* millisecond delay of {@code timeoutMillis()}. |
958 |
*/ |
959 |
void assertThreadStaysAlive(Thread thread) { |
960 |
assertThreadStaysAlive(thread, timeoutMillis()); |
961 |
} |
962 |
|
963 |
/** |
964 |
* Checks that thread does not terminate within the given millisecond delay. |
965 |
*/ |
966 |
void assertThreadStaysAlive(Thread thread, long millis) { |
967 |
try { |
968 |
// No need to optimize the failing case via Thread.join. |
969 |
delay(millis); |
970 |
assertTrue(thread.isAlive()); |
971 |
} catch (InterruptedException fail) { |
972 |
threadFail("Unexpected InterruptedException"); |
973 |
} |
974 |
} |
975 |
|
976 |
/** |
977 |
* Checks that the threads do not terminate within the default |
978 |
* millisecond delay of {@code timeoutMillis()}. |
979 |
*/ |
980 |
void assertThreadsStayAlive(Thread... threads) { |
981 |
assertThreadsStayAlive(timeoutMillis(), threads); |
982 |
} |
983 |
|
984 |
/** |
985 |
* Checks that the threads do not terminate within the given millisecond delay. |
986 |
*/ |
987 |
void assertThreadsStayAlive(long millis, Thread... threads) { |
988 |
try { |
989 |
// No need to optimize the failing case via Thread.join. |
990 |
delay(millis); |
991 |
for (Thread thread : threads) |
992 |
assertTrue(thread.isAlive()); |
993 |
} catch (InterruptedException fail) { |
994 |
threadFail("Unexpected InterruptedException"); |
995 |
} |
996 |
} |
997 |
|
998 |
/** |
999 |
* Checks that future.get times out, with the default timeout of |
1000 |
* {@code timeoutMillis()}. |
1001 |
*/ |
1002 |
void assertFutureTimesOut(Future future) { |
1003 |
assertFutureTimesOut(future, timeoutMillis()); |
1004 |
} |
1005 |
|
1006 |
/** |
1007 |
* Checks that future.get times out, with the given millisecond timeout. |
1008 |
*/ |
1009 |
void assertFutureTimesOut(Future future, long timeoutMillis) { |
1010 |
long startTime = System.nanoTime(); |
1011 |
try { |
1012 |
future.get(timeoutMillis, MILLISECONDS); |
1013 |
shouldThrow(); |
1014 |
} catch (TimeoutException success) { |
1015 |
} catch (Exception fail) { |
1016 |
threadUnexpectedException(fail); |
1017 |
} finally { future.cancel(true); } |
1018 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
1019 |
} |
1020 |
|
1021 |
/** |
1022 |
* Fails with message "should throw exception". |
1023 |
*/ |
1024 |
public void shouldThrow() { |
1025 |
fail("Should throw exception"); |
1026 |
} |
1027 |
|
1028 |
/** |
1029 |
* Fails with message "should throw " + exceptionName. |
1030 |
*/ |
1031 |
public void shouldThrow(String exceptionName) { |
1032 |
fail("Should throw " + exceptionName); |
1033 |
} |
1034 |
|
1035 |
/** |
1036 |
* The number of elements to place in collections, arrays, etc. |
1037 |
*/ |
1038 |
public static final int SIZE = 20; |
1039 |
|
1040 |
// Some convenient Integer constants |
1041 |
|
1042 |
public static final Integer zero = new Integer(0); |
1043 |
public static final Integer one = new Integer(1); |
1044 |
public static final Integer two = new Integer(2); |
1045 |
public static final Integer three = new Integer(3); |
1046 |
public static final Integer four = new Integer(4); |
1047 |
public static final Integer five = new Integer(5); |
1048 |
public static final Integer six = new Integer(6); |
1049 |
public static final Integer seven = new Integer(7); |
1050 |
public static final Integer eight = new Integer(8); |
1051 |
public static final Integer nine = new Integer(9); |
1052 |
public static final Integer m1 = new Integer(-1); |
1053 |
public static final Integer m2 = new Integer(-2); |
1054 |
public static final Integer m3 = new Integer(-3); |
1055 |
public static final Integer m4 = new Integer(-4); |
1056 |
public static final Integer m5 = new Integer(-5); |
1057 |
public static final Integer m6 = new Integer(-6); |
1058 |
public static final Integer m10 = new Integer(-10); |
1059 |
|
1060 |
/** |
1061 |
* Runs Runnable r with a security policy that permits precisely |
1062 |
* the specified permissions. If there is no current security |
1063 |
* manager, the runnable is run twice, both with and without a |
1064 |
* security manager. We require that any security manager permit |
1065 |
* getPolicy/setPolicy. |
1066 |
*/ |
1067 |
public void runWithPermissions(Runnable r, Permission... permissions) { |
1068 |
SecurityManager sm = System.getSecurityManager(); |
1069 |
if (sm == null) { |
1070 |
r.run(); |
1071 |
} |
1072 |
runWithSecurityManagerWithPermissions(r, permissions); |
1073 |
} |
1074 |
|
1075 |
/** |
1076 |
* Runs Runnable r with a security policy that permits precisely |
1077 |
* the specified permissions. If there is no current security |
1078 |
* manager, a temporary one is set for the duration of the |
1079 |
* Runnable. We require that any security manager permit |
1080 |
* getPolicy/setPolicy. |
1081 |
*/ |
1082 |
public void runWithSecurityManagerWithPermissions(Runnable r, |
1083 |
Permission... permissions) { |
1084 |
SecurityManager sm = System.getSecurityManager(); |
1085 |
if (sm == null) { |
1086 |
Policy savedPolicy = Policy.getPolicy(); |
1087 |
try { |
1088 |
Policy.setPolicy(permissivePolicy()); |
1089 |
System.setSecurityManager(new SecurityManager()); |
1090 |
runWithSecurityManagerWithPermissions(r, permissions); |
1091 |
} finally { |
1092 |
System.setSecurityManager(null); |
1093 |
Policy.setPolicy(savedPolicy); |
1094 |
} |
1095 |
} else { |
1096 |
Policy savedPolicy = Policy.getPolicy(); |
1097 |
AdjustablePolicy policy = new AdjustablePolicy(permissions); |
1098 |
Policy.setPolicy(policy); |
1099 |
|
1100 |
try { |
1101 |
r.run(); |
1102 |
} finally { |
1103 |
policy.addPermission(new SecurityPermission("setPolicy")); |
1104 |
Policy.setPolicy(savedPolicy); |
1105 |
} |
1106 |
} |
1107 |
} |
1108 |
|
1109 |
/** |
1110 |
* Runs a runnable without any permissions. |
1111 |
*/ |
1112 |
public void runWithoutPermissions(Runnable r) { |
1113 |
runWithPermissions(r); |
1114 |
} |
1115 |
|
1116 |
/** |
1117 |
* A security policy where new permissions can be dynamically added |
1118 |
* or all cleared. |
1119 |
*/ |
1120 |
public static class AdjustablePolicy extends java.security.Policy { |
1121 |
Permissions perms = new Permissions(); |
1122 |
AdjustablePolicy(Permission... permissions) { |
1123 |
for (Permission permission : permissions) |
1124 |
perms.add(permission); |
1125 |
} |
1126 |
void addPermission(Permission perm) { perms.add(perm); } |
1127 |
void clearPermissions() { perms = new Permissions(); } |
1128 |
public PermissionCollection getPermissions(CodeSource cs) { |
1129 |
return perms; |
1130 |
} |
1131 |
public PermissionCollection getPermissions(ProtectionDomain pd) { |
1132 |
return perms; |
1133 |
} |
1134 |
public boolean implies(ProtectionDomain pd, Permission p) { |
1135 |
return perms.implies(p); |
1136 |
} |
1137 |
public void refresh() {} |
1138 |
public String toString() { |
1139 |
List<Permission> ps = new ArrayList<Permission>(); |
1140 |
for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();) |
1141 |
ps.add(e.nextElement()); |
1142 |
return "AdjustablePolicy with permissions " + ps; |
1143 |
} |
1144 |
} |
1145 |
|
1146 |
/** |
1147 |
* Returns a policy containing all the permissions we ever need. |
1148 |
*/ |
1149 |
public static Policy permissivePolicy() { |
1150 |
return new AdjustablePolicy |
1151 |
// Permissions j.u.c. needs directly |
1152 |
(new RuntimePermission("modifyThread"), |
1153 |
new RuntimePermission("getClassLoader"), |
1154 |
new RuntimePermission("setContextClassLoader"), |
1155 |
// Permissions needed to change permissions! |
1156 |
new SecurityPermission("getPolicy"), |
1157 |
new SecurityPermission("setPolicy"), |
1158 |
new RuntimePermission("setSecurityManager"), |
1159 |
// Permissions needed by the junit test harness |
1160 |
new RuntimePermission("accessDeclaredMembers"), |
1161 |
new PropertyPermission("*", "read"), |
1162 |
new java.io.FilePermission("<<ALL FILES>>", "read")); |
1163 |
} |
1164 |
|
1165 |
/** |
1166 |
* Sleeps until the given time has elapsed. |
1167 |
* Throws AssertionFailedError if interrupted. |
1168 |
*/ |
1169 |
void sleep(long millis) { |
1170 |
try { |
1171 |
delay(millis); |
1172 |
} catch (InterruptedException fail) { |
1173 |
AssertionFailedError afe = |
1174 |
new AssertionFailedError("Unexpected InterruptedException"); |
1175 |
afe.initCause(fail); |
1176 |
throw afe; |
1177 |
} |
1178 |
} |
1179 |
|
1180 |
/** |
1181 |
* Spin-waits up to the specified number of milliseconds for the given |
1182 |
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
1183 |
*/ |
1184 |
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
1185 |
long startTime = System.nanoTime(); |
1186 |
for (;;) { |
1187 |
Thread.State s = thread.getState(); |
1188 |
if (s == Thread.State.BLOCKED || |
1189 |
s == Thread.State.WAITING || |
1190 |
s == Thread.State.TIMED_WAITING) |
1191 |
return; |
1192 |
else if (s == Thread.State.TERMINATED) |
1193 |
fail("Unexpected thread termination"); |
1194 |
else if (millisElapsedSince(startTime) > timeoutMillis) { |
1195 |
threadAssertTrue(thread.isAlive()); |
1196 |
return; |
1197 |
} |
1198 |
Thread.yield(); |
1199 |
} |
1200 |
} |
1201 |
|
1202 |
/** |
1203 |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
1204 |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
1205 |
*/ |
1206 |
void waitForThreadToEnterWaitState(Thread thread) { |
1207 |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
1208 |
} |
1209 |
|
1210 |
/** |
1211 |
* Returns the number of milliseconds since time given by |
1212 |
* startNanoTime, which must have been previously returned from a |
1213 |
* call to {@link System#nanoTime()}. |
1214 |
*/ |
1215 |
static long millisElapsedSince(long startNanoTime) { |
1216 |
return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime); |
1217 |
} |
1218 |
|
1219 |
// void assertTerminatesPromptly(long timeoutMillis, Runnable r) { |
1220 |
// long startTime = System.nanoTime(); |
1221 |
// try { |
1222 |
// r.run(); |
1223 |
// } catch (Throwable fail) { threadUnexpectedException(fail); } |
1224 |
// if (millisElapsedSince(startTime) > timeoutMillis/2) |
1225 |
// throw new AssertionFailedError("did not return promptly"); |
1226 |
// } |
1227 |
|
1228 |
// void assertTerminatesPromptly(Runnable r) { |
1229 |
// assertTerminatesPromptly(LONG_DELAY_MS/2, r); |
1230 |
// } |
1231 |
|
1232 |
/** |
1233 |
* Checks that timed f.get() returns the expected value, and does not |
1234 |
* wait for the timeout to elapse before returning. |
1235 |
*/ |
1236 |
<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) { |
1237 |
long startTime = System.nanoTime(); |
1238 |
try { |
1239 |
assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS)); |
1240 |
} catch (Throwable fail) { threadUnexpectedException(fail); } |
1241 |
if (millisElapsedSince(startTime) > timeoutMillis/2) |
1242 |
throw new AssertionFailedError("timed get did not return promptly"); |
1243 |
} |
1244 |
|
1245 |
<T> void checkTimedGet(Future<T> f, T expectedValue) { |
1246 |
checkTimedGet(f, expectedValue, LONG_DELAY_MS); |
1247 |
} |
1248 |
|
1249 |
/** |
1250 |
* Returns a new started daemon Thread running the given runnable. |
1251 |
*/ |
1252 |
Thread newStartedThread(Runnable runnable) { |
1253 |
Thread t = new Thread(runnable); |
1254 |
t.setDaemon(true); |
1255 |
t.start(); |
1256 |
return t; |
1257 |
} |
1258 |
|
1259 |
/** |
1260 |
* Waits for the specified time (in milliseconds) for the thread |
1261 |
* to terminate (using {@link Thread#join(long)}), else interrupts |
1262 |
* the thread (in the hope that it may terminate later) and fails. |
1263 |
*/ |
1264 |
void awaitTermination(Thread t, long timeoutMillis) { |
1265 |
try { |
1266 |
t.join(timeoutMillis); |
1267 |
} catch (InterruptedException fail) { |
1268 |
threadUnexpectedException(fail); |
1269 |
} finally { |
1270 |
if (t.getState() != Thread.State.TERMINATED) { |
1271 |
t.interrupt(); |
1272 |
threadFail("timed out waiting for thread to terminate"); |
1273 |
} |
1274 |
} |
1275 |
} |
1276 |
|
1277 |
/** |
1278 |
* Waits for LONG_DELAY_MS milliseconds for the thread to |
1279 |
* terminate (using {@link Thread#join(long)}), else interrupts |
1280 |
* the thread (in the hope that it may terminate later) and fails. |
1281 |
*/ |
1282 |
void awaitTermination(Thread t) { |
1283 |
awaitTermination(t, LONG_DELAY_MS); |
1284 |
} |
1285 |
|
1286 |
// Some convenient Runnable classes |
1287 |
|
1288 |
public abstract class CheckedRunnable implements Runnable { |
1289 |
protected abstract void realRun() throws Throwable; |
1290 |
|
1291 |
public final void run() { |
1292 |
try { |
1293 |
realRun(); |
1294 |
} catch (Throwable fail) { |
1295 |
threadUnexpectedException(fail); |
1296 |
} |
1297 |
} |
1298 |
} |
1299 |
|
1300 |
public abstract class RunnableShouldThrow implements Runnable { |
1301 |
protected abstract void realRun() throws Throwable; |
1302 |
|
1303 |
final Class<?> exceptionClass; |
1304 |
|
1305 |
<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) { |
1306 |
this.exceptionClass = exceptionClass; |
1307 |
} |
1308 |
|
1309 |
public final void run() { |
1310 |
try { |
1311 |
realRun(); |
1312 |
threadShouldThrow(exceptionClass.getSimpleName()); |
1313 |
} catch (Throwable t) { |
1314 |
if (! exceptionClass.isInstance(t)) |
1315 |
threadUnexpectedException(t); |
1316 |
} |
1317 |
} |
1318 |
} |
1319 |
|
1320 |
public abstract class ThreadShouldThrow extends Thread { |
1321 |
protected abstract void realRun() throws Throwable; |
1322 |
|
1323 |
final Class<?> exceptionClass; |
1324 |
|
1325 |
<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) { |
1326 |
this.exceptionClass = exceptionClass; |
1327 |
} |
1328 |
|
1329 |
public final void run() { |
1330 |
try { |
1331 |
realRun(); |
1332 |
threadShouldThrow(exceptionClass.getSimpleName()); |
1333 |
} catch (Throwable t) { |
1334 |
if (! exceptionClass.isInstance(t)) |
1335 |
threadUnexpectedException(t); |
1336 |
} |
1337 |
} |
1338 |
} |
1339 |
|
1340 |
public abstract class CheckedInterruptedRunnable implements Runnable { |
1341 |
protected abstract void realRun() throws Throwable; |
1342 |
|
1343 |
public final void run() { |
1344 |
try { |
1345 |
realRun(); |
1346 |
threadShouldThrow("InterruptedException"); |
1347 |
} catch (InterruptedException success) { |
1348 |
threadAssertFalse(Thread.interrupted()); |
1349 |
} catch (Throwable fail) { |
1350 |
threadUnexpectedException(fail); |
1351 |
} |
1352 |
} |
1353 |
} |
1354 |
|
1355 |
public abstract class CheckedCallable<T> implements Callable<T> { |
1356 |
protected abstract T realCall() throws Throwable; |
1357 |
|
1358 |
public final T call() { |
1359 |
try { |
1360 |
return realCall(); |
1361 |
} catch (Throwable fail) { |
1362 |
threadUnexpectedException(fail); |
1363 |
return null; |
1364 |
} |
1365 |
} |
1366 |
} |
1367 |
|
1368 |
public abstract class CheckedInterruptedCallable<T> |
1369 |
implements Callable<T> { |
1370 |
protected abstract T realCall() throws Throwable; |
1371 |
|
1372 |
public final T call() { |
1373 |
try { |
1374 |
T result = realCall(); |
1375 |
threadShouldThrow("InterruptedException"); |
1376 |
return result; |
1377 |
} catch (InterruptedException success) { |
1378 |
threadAssertFalse(Thread.interrupted()); |
1379 |
} catch (Throwable fail) { |
1380 |
threadUnexpectedException(fail); |
1381 |
} |
1382 |
return null; |
1383 |
} |
1384 |
} |
1385 |
|
1386 |
public static class NoOpRunnable implements Runnable { |
1387 |
public void run() {} |
1388 |
} |
1389 |
|
1390 |
public static class NoOpCallable implements Callable { |
1391 |
public Object call() { return Boolean.TRUE; } |
1392 |
} |
1393 |
|
1394 |
public static final String TEST_STRING = "a test string"; |
1395 |
|
1396 |
public static class StringTask implements Callable<String> { |
1397 |
final String value; |
1398 |
public StringTask() { this(TEST_STRING); } |
1399 |
public StringTask(String value) { this.value = value; } |
1400 |
public String call() { return value; } |
1401 |
} |
1402 |
|
1403 |
public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) { |
1404 |
return new CheckedCallable<String>() { |
1405 |
protected String realCall() { |
1406 |
try { |
1407 |
latch.await(); |
1408 |
} catch (InterruptedException quittingTime) {} |
1409 |
return TEST_STRING; |
1410 |
}}; |
1411 |
} |
1412 |
|
1413 |
public Runnable countDowner(final CountDownLatch latch) { |
1414 |
return new CheckedRunnable() { |
1415 |
public void realRun() throws InterruptedException { |
1416 |
latch.countDown(); |
1417 |
}}; |
1418 |
} |
1419 |
|
1420 |
class LatchAwaiter extends CheckedRunnable { |
1421 |
static final int NEW = 0; |
1422 |
static final int RUNNING = 1; |
1423 |
static final int DONE = 2; |
1424 |
final CountDownLatch latch; |
1425 |
int state = NEW; |
1426 |
LatchAwaiter(CountDownLatch latch) { this.latch = latch; } |
1427 |
public void realRun() throws InterruptedException { |
1428 |
state = 1; |
1429 |
await(latch); |
1430 |
state = 2; |
1431 |
} |
1432 |
} |
1433 |
|
1434 |
public LatchAwaiter awaiter(CountDownLatch latch) { |
1435 |
return new LatchAwaiter(latch); |
1436 |
} |
1437 |
|
1438 |
public void await(CountDownLatch latch) { |
1439 |
try { |
1440 |
if (!latch.await(LONG_DELAY_MS, MILLISECONDS)) |
1441 |
fail("timed out waiting for CountDownLatch for " |
1442 |
+ (LONG_DELAY_MS/1000) + " sec"); |
1443 |
} catch (Throwable fail) { |
1444 |
threadUnexpectedException(fail); |
1445 |
} |
1446 |
} |
1447 |
|
1448 |
public void await(Semaphore semaphore) { |
1449 |
try { |
1450 |
if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)) |
1451 |
fail("timed out waiting for Semaphore for " |
1452 |
+ (LONG_DELAY_MS/1000) + " sec"); |
1453 |
} catch (Throwable fail) { |
1454 |
threadUnexpectedException(fail); |
1455 |
} |
1456 |
} |
1457 |
|
1458 |
// /** |
1459 |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
1460 |
// */ |
1461 |
// public void await(AtomicBoolean flag) { |
1462 |
// await(flag, LONG_DELAY_MS); |
1463 |
// } |
1464 |
|
1465 |
// /** |
1466 |
// * Spin-waits up to the specified timeout until flag becomes true. |
1467 |
// */ |
1468 |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
1469 |
// long startTime = System.nanoTime(); |
1470 |
// while (!flag.get()) { |
1471 |
// if (millisElapsedSince(startTime) > timeoutMillis) |
1472 |
// throw new AssertionFailedError("timed out"); |
1473 |
// Thread.yield(); |
1474 |
// } |
1475 |
// } |
1476 |
|
1477 |
public static class NPETask implements Callable<String> { |
1478 |
public String call() { throw new NullPointerException(); } |
1479 |
} |
1480 |
|
1481 |
public static class CallableOne implements Callable<Integer> { |
1482 |
public Integer call() { return one; } |
1483 |
} |
1484 |
|
1485 |
public class ShortRunnable extends CheckedRunnable { |
1486 |
protected void realRun() throws Throwable { |
1487 |
delay(SHORT_DELAY_MS); |
1488 |
} |
1489 |
} |
1490 |
|
1491 |
public class ShortInterruptedRunnable extends CheckedInterruptedRunnable { |
1492 |
protected void realRun() throws InterruptedException { |
1493 |
delay(SHORT_DELAY_MS); |
1494 |
} |
1495 |
} |
1496 |
|
1497 |
public class SmallRunnable extends CheckedRunnable { |
1498 |
protected void realRun() throws Throwable { |
1499 |
delay(SMALL_DELAY_MS); |
1500 |
} |
1501 |
} |
1502 |
|
1503 |
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable { |
1504 |
protected void realRun() { |
1505 |
try { |
1506 |
delay(SMALL_DELAY_MS); |
1507 |
} catch (InterruptedException ok) {} |
1508 |
} |
1509 |
} |
1510 |
|
1511 |
public class SmallCallable extends CheckedCallable { |
1512 |
protected Object realCall() throws InterruptedException { |
1513 |
delay(SMALL_DELAY_MS); |
1514 |
return Boolean.TRUE; |
1515 |
} |
1516 |
} |
1517 |
|
1518 |
public class MediumRunnable extends CheckedRunnable { |
1519 |
protected void realRun() throws Throwable { |
1520 |
delay(MEDIUM_DELAY_MS); |
1521 |
} |
1522 |
} |
1523 |
|
1524 |
public class MediumInterruptedRunnable extends CheckedInterruptedRunnable { |
1525 |
protected void realRun() throws InterruptedException { |
1526 |
delay(MEDIUM_DELAY_MS); |
1527 |
} |
1528 |
} |
1529 |
|
1530 |
public Runnable possiblyInterruptedRunnable(final long timeoutMillis) { |
1531 |
return new CheckedRunnable() { |
1532 |
protected void realRun() { |
1533 |
try { |
1534 |
delay(timeoutMillis); |
1535 |
} catch (InterruptedException ok) {} |
1536 |
}}; |
1537 |
} |
1538 |
|
1539 |
public class MediumPossiblyInterruptedRunnable extends CheckedRunnable { |
1540 |
protected void realRun() { |
1541 |
try { |
1542 |
delay(MEDIUM_DELAY_MS); |
1543 |
} catch (InterruptedException ok) {} |
1544 |
} |
1545 |
} |
1546 |
|
1547 |
public class LongPossiblyInterruptedRunnable extends CheckedRunnable { |
1548 |
protected void realRun() { |
1549 |
try { |
1550 |
delay(LONG_DELAY_MS); |
1551 |
} catch (InterruptedException ok) {} |
1552 |
} |
1553 |
} |
1554 |
|
1555 |
/** |
1556 |
* For use as ThreadFactory in constructors |
1557 |
*/ |
1558 |
public static class SimpleThreadFactory implements ThreadFactory { |
1559 |
public Thread newThread(Runnable r) { |
1560 |
return new Thread(r); |
1561 |
} |
1562 |
} |
1563 |
|
1564 |
public interface TrackedRunnable extends Runnable { |
1565 |
boolean isDone(); |
1566 |
} |
1567 |
|
1568 |
public static TrackedRunnable trackedRunnable(final long timeoutMillis) { |
1569 |
return new TrackedRunnable() { |
1570 |
private volatile boolean done = false; |
1571 |
public boolean isDone() { return done; } |
1572 |
public void run() { |
1573 |
try { |
1574 |
delay(timeoutMillis); |
1575 |
done = true; |
1576 |
} catch (InterruptedException ok) {} |
1577 |
} |
1578 |
}; |
1579 |
} |
1580 |
|
1581 |
public static class TrackedShortRunnable implements Runnable { |
1582 |
public volatile boolean done = false; |
1583 |
public void run() { |
1584 |
try { |
1585 |
delay(SHORT_DELAY_MS); |
1586 |
done = true; |
1587 |
} catch (InterruptedException ok) {} |
1588 |
} |
1589 |
} |
1590 |
|
1591 |
public static class TrackedSmallRunnable implements Runnable { |
1592 |
public volatile boolean done = false; |
1593 |
public void run() { |
1594 |
try { |
1595 |
delay(SMALL_DELAY_MS); |
1596 |
done = true; |
1597 |
} catch (InterruptedException ok) {} |
1598 |
} |
1599 |
} |
1600 |
|
1601 |
public static class TrackedMediumRunnable implements Runnable { |
1602 |
public volatile boolean done = false; |
1603 |
public void run() { |
1604 |
try { |
1605 |
delay(MEDIUM_DELAY_MS); |
1606 |
done = true; |
1607 |
} catch (InterruptedException ok) {} |
1608 |
} |
1609 |
} |
1610 |
|
1611 |
public static class TrackedLongRunnable implements Runnable { |
1612 |
public volatile boolean done = false; |
1613 |
public void run() { |
1614 |
try { |
1615 |
delay(LONG_DELAY_MS); |
1616 |
done = true; |
1617 |
} catch (InterruptedException ok) {} |
1618 |
} |
1619 |
} |
1620 |
|
1621 |
public static class TrackedNoOpRunnable implements Runnable { |
1622 |
public volatile boolean done = false; |
1623 |
public void run() { |
1624 |
done = true; |
1625 |
} |
1626 |
} |
1627 |
|
1628 |
public static class TrackedCallable implements Callable { |
1629 |
public volatile boolean done = false; |
1630 |
public Object call() { |
1631 |
try { |
1632 |
delay(SMALL_DELAY_MS); |
1633 |
done = true; |
1634 |
} catch (InterruptedException ok) {} |
1635 |
return Boolean.TRUE; |
1636 |
} |
1637 |
} |
1638 |
|
1639 |
/** |
1640 |
* Analog of CheckedRunnable for RecursiveAction |
1641 |
*/ |
1642 |
public abstract class CheckedRecursiveAction extends RecursiveAction { |
1643 |
protected abstract void realCompute() throws Throwable; |
1644 |
|
1645 |
@Override protected final void compute() { |
1646 |
try { |
1647 |
realCompute(); |
1648 |
} catch (Throwable fail) { |
1649 |
threadUnexpectedException(fail); |
1650 |
} |
1651 |
} |
1652 |
} |
1653 |
|
1654 |
/** |
1655 |
* Analog of CheckedCallable for RecursiveTask |
1656 |
*/ |
1657 |
public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> { |
1658 |
protected abstract T realCompute() throws Throwable; |
1659 |
|
1660 |
@Override protected final T compute() { |
1661 |
try { |
1662 |
return realCompute(); |
1663 |
} catch (Throwable fail) { |
1664 |
threadUnexpectedException(fail); |
1665 |
return null; |
1666 |
} |
1667 |
} |
1668 |
} |
1669 |
|
1670 |
/** |
1671 |
* For use as RejectedExecutionHandler in constructors |
1672 |
*/ |
1673 |
public static class NoOpREHandler implements RejectedExecutionHandler { |
1674 |
public void rejectedExecution(Runnable r, |
1675 |
ThreadPoolExecutor executor) {} |
1676 |
} |
1677 |
|
1678 |
/** |
1679 |
* A CyclicBarrier that uses timed await and fails with |
1680 |
* AssertionFailedErrors instead of throwing checked exceptions. |
1681 |
*/ |
1682 |
public class CheckedBarrier extends CyclicBarrier { |
1683 |
public CheckedBarrier(int parties) { super(parties); } |
1684 |
|
1685 |
public int await() { |
1686 |
try { |
1687 |
return super.await(2 * LONG_DELAY_MS, MILLISECONDS); |
1688 |
} catch (TimeoutException timedOut) { |
1689 |
throw new AssertionFailedError("timed out"); |
1690 |
} catch (Exception fail) { |
1691 |
AssertionFailedError afe = |
1692 |
new AssertionFailedError("Unexpected exception: " + fail); |
1693 |
afe.initCause(fail); |
1694 |
throw afe; |
1695 |
} |
1696 |
} |
1697 |
} |
1698 |
|
1699 |
void checkEmpty(BlockingQueue q) { |
1700 |
try { |
1701 |
assertTrue(q.isEmpty()); |
1702 |
assertEquals(0, q.size()); |
1703 |
assertNull(q.peek()); |
1704 |
assertNull(q.poll()); |
1705 |
assertNull(q.poll(0, MILLISECONDS)); |
1706 |
assertEquals(q.toString(), "[]"); |
1707 |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
1708 |
assertFalse(q.iterator().hasNext()); |
1709 |
try { |
1710 |
q.element(); |
1711 |
shouldThrow(); |
1712 |
} catch (NoSuchElementException success) {} |
1713 |
try { |
1714 |
q.iterator().next(); |
1715 |
shouldThrow(); |
1716 |
} catch (NoSuchElementException success) {} |
1717 |
try { |
1718 |
q.remove(); |
1719 |
shouldThrow(); |
1720 |
} catch (NoSuchElementException success) {} |
1721 |
} catch (InterruptedException fail) { threadUnexpectedException(fail); } |
1722 |
} |
1723 |
|
1724 |
void assertSerialEquals(Object x, Object y) { |
1725 |
assertTrue(Arrays.equals(serialBytes(x), serialBytes(y))); |
1726 |
} |
1727 |
|
1728 |
void assertNotSerialEquals(Object x, Object y) { |
1729 |
assertFalse(Arrays.equals(serialBytes(x), serialBytes(y))); |
1730 |
} |
1731 |
|
1732 |
byte[] serialBytes(Object o) { |
1733 |
try { |
1734 |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1735 |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1736 |
oos.writeObject(o); |
1737 |
oos.flush(); |
1738 |
oos.close(); |
1739 |
return bos.toByteArray(); |
1740 |
} catch (Throwable fail) { |
1741 |
threadUnexpectedException(fail); |
1742 |
return new byte[0]; |
1743 |
} |
1744 |
} |
1745 |
|
1746 |
@SuppressWarnings("unchecked") |
1747 |
<T> T serialClone(T o) { |
1748 |
try { |
1749 |
ObjectInputStream ois = new ObjectInputStream |
1750 |
(new ByteArrayInputStream(serialBytes(o))); |
1751 |
T clone = (T) ois.readObject(); |
1752 |
assertSame(o.getClass(), clone.getClass()); |
1753 |
return clone; |
1754 |
} catch (Throwable fail) { |
1755 |
threadUnexpectedException(fail); |
1756 |
return null; |
1757 |
} |
1758 |
} |
1759 |
|
1760 |
public void assertThrows(Class<? extends Throwable> expectedExceptionClass, |
1761 |
Runnable... throwingActions) { |
1762 |
for (Runnable throwingAction : throwingActions) { |
1763 |
boolean threw = false; |
1764 |
try { throwingAction.run(); } |
1765 |
catch (Throwable t) { |
1766 |
threw = true; |
1767 |
if (!expectedExceptionClass.isInstance(t)) { |
1768 |
AssertionFailedError afe = |
1769 |
new AssertionFailedError |
1770 |
("Expected " + expectedExceptionClass.getName() + |
1771 |
", got " + t.getClass().getName()); |
1772 |
afe.initCause(t); |
1773 |
threadUnexpectedException(afe); |
1774 |
} |
1775 |
} |
1776 |
if (!threw) |
1777 |
shouldThrow(expectedExceptionClass.getName()); |
1778 |
} |
1779 |
} |
1780 |
|
1781 |
public void assertIteratorExhausted(Iterator<?> it) { |
1782 |
try { |
1783 |
it.next(); |
1784 |
shouldThrow(); |
1785 |
} catch (NoSuchElementException success) {} |
1786 |
assertFalse(it.hasNext()); |
1787 |
} |
1788 |
} |