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