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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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* 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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import java.io.ByteArrayInputStream; |
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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.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.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.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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* |
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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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* <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.</li> |
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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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* <li>If you override {@link #setUp} or {@link #tearDown}, make sure |
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* to invoke {@code super.setUp} and {@code super.tearDown} within |
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* them. These methods are used to clear and check for thread |
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* assertion failures.</li> |
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* 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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* is always discriminable as larger than SHORT and smaller than |
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* MEDIUM. And so on. These constants are set to conservative values, |
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* but even so, if there is ever any doubt, they can all be increased |
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* in one spot to rerun tests on slower platforms.</li> |
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* 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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* <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 |
139 |
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* using Executors.</li> |
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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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> |
* <li>Usually, there is one testcase method per JSR166 method |
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* covering "normal" operation, and then as many exception-testing |
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* methods as there are exceptions the method can throw. Sometimes |
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* there are multiple tests per JSR166 method when the different |
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* "normal" behaviors differ significantly. And sometimes testcases |
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* cover multiple methods when they cannot be tested in |
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* isolation.</li> |
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* 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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* <li>The documentation style for testcases is to provide as javadoc |
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* a simple sentence or two describing the property that the testcase |
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* method purports to test. The javadocs do not say anything about how |
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* the property is tested. To find out, read the code.</li> |
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> |
* 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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> |
* <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 |
163 |
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* needed to check basic conformance.</li> |
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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 |
167 |
< |
* them in TCK test suites.</li> |
167 |
> |
* them in TCK test suites. |
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* |
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< |
* <li> As a convenience, the {@code main} of this class (JSR166TestCase) |
170 |
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* runs all JSR166 unit tests.</li> |
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> |
* <li>As a convenience, the {@code main} of this class (JSR166TestCase) |
170 |
> |
* runs all JSR166 unit tests. |
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* |
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* </ul> |
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*/ |
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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. |
216 |
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*/ |
217 |
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private static float systemPropertyValue(String name) { |
218 |
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String floatString = System.getProperty(name); |
219 |
+ |
if (floatString == null) |
220 |
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return Float.NaN; |
221 |
+ |
try { |
222 |
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return Float.parseFloat(floatString); |
223 |
+ |
} catch (NumberFormatException ex) { |
224 |
+ |
throw new IllegalArgumentException( |
225 |
+ |
String.format("Bad float value in system property %s=%s", |
226 |
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name, floatString)); |
227 |
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} |
228 |
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} |
229 |
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|
230 |
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/** |
231 |
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* The scaling factor to apply to standard delays used in tests. |
232 |
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* May be initialized from any of: |
233 |
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* - the "jsr166.delay.factor" system property |
234 |
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* - the "test.timeout.factor" system property (as used by jtreg) |
235 |
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* See: http://openjdk.java.net/jtreg/tag-spec.html |
236 |
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* - hard-coded fuzz factor when using a known slowpoke VM |
237 |
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*/ |
238 |
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private static final float delayFactor = delayFactor(); |
239 |
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|
240 |
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private static float delayFactor() { |
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float x; |
242 |
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if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor"))) |
243 |
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return x; |
244 |
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if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor"))) |
245 |
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return x; |
246 |
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String prop = System.getProperty("java.vm.version"); |
247 |
+ |
if (prop != null && prop.matches(".*debug.*")) |
248 |
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return 4.0f; // How much slower is fastdebug than product?! |
249 |
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return 1.0f; |
250 |
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} |
251 |
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|
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+ |
public JSR166TestCase() { super(); } |
253 |
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public JSR166TestCase(String name) { super(name); } |
254 |
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|
255 |
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/** |
256 |
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* A filter for tests to run, matching strings of the form |
257 |
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* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)" |
258 |
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* Usefully combined with jsr166.runsPerTest. |
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return (regex == null) ? null : Pattern.compile(regex); |
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} |
266 |
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|
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< |
protected void runTest() throws Throwable { |
267 |
> |
// Instrumentation to debug very rare, but very annoying hung test runs. |
268 |
> |
static volatile TestCase currentTestCase; |
269 |
> |
// static volatile int currentRun = 0; |
270 |
> |
static { |
271 |
> |
Runnable checkForWedgedTest = new Runnable() { public void run() { |
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> |
// Avoid spurious reports with enormous runsPerTest. |
273 |
> |
// 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 ... |
275 |
> |
final int timeoutMinutes = |
276 |
> |
Math.min(15, Math.max(runsPerTest / 60, 1)); |
277 |
> |
for (TestCase lastTestCase = currentTestCase;;) { |
278 |
> |
try { MINUTES.sleep(timeoutMinutes); } |
279 |
> |
catch (InterruptedException unexpected) { break; } |
280 |
> |
if (lastTestCase == currentTestCase) { |
281 |
> |
System.err.printf( |
282 |
> |
"Looks like we're stuck running test: %s%n", |
283 |
> |
lastTestCase); |
284 |
> |
// System.err.printf( |
285 |
> |
// "Looks like we're stuck running test: %s (%d/%d)%n", |
286 |
> |
// lastTestCase, currentRun, runsPerTest); |
287 |
> |
// System.err.println("availableProcessors=" + |
288 |
> |
// Runtime.getRuntime().availableProcessors()); |
289 |
> |
// System.err.printf("cpu model = %s%n", cpuModel()); |
290 |
> |
dumpTestThreads(); |
291 |
> |
// one stack dump is probably enough; more would be spam |
292 |
> |
break; |
293 |
> |
} |
294 |
> |
lastTestCase = currentTestCase; |
295 |
> |
}}}; |
296 |
> |
Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest"); |
297 |
> |
thread.setDaemon(true); |
298 |
> |
thread.start(); |
299 |
> |
} |
300 |
> |
|
301 |
> |
// public static String cpuModel() { |
302 |
> |
// try { |
303 |
> |
// java.util.regex.Matcher matcher |
304 |
> |
// = Pattern.compile("model name\\s*: (.*)") |
305 |
> |
// .matcher(new String( |
306 |
> |
// java.nio.file.Files.readAllBytes( |
307 |
> |
// java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8")); |
308 |
> |
// matcher.find(); |
309 |
> |
// return matcher.group(1); |
310 |
> |
// } catch (Exception ex) { return null; } |
311 |
> |
// } |
312 |
> |
|
313 |
> |
public void runBare() throws Throwable { |
314 |
> |
currentTestCase = this; |
315 |
|
if (methodFilter == null |
316 |
< |
|| methodFilter.matcher(toString()).find()) { |
317 |
< |
for (int i = 0; i < runsPerTest; i++) { |
318 |
< |
if (profileTests) |
319 |
< |
runTestProfiled(); |
320 |
< |
else |
321 |
< |
super.runTest(); |
322 |
< |
} |
316 |
> |
|| methodFilter.matcher(toString()).find()) |
317 |
> |
super.runBare(); |
318 |
> |
} |
319 |
> |
|
320 |
> |
protected void runTest() throws Throwable { |
321 |
> |
for (int i = 0; i < runsPerTest; i++) { |
322 |
> |
// currentRun = i; |
323 |
> |
if (profileTests) |
324 |
> |
runTestProfiled(); |
325 |
> |
else |
326 |
> |
super.runTest(); |
327 |
|
} |
328 |
|
} |
329 |
|
|
330 |
|
protected void runTestProfiled() throws Throwable { |
331 |
< |
// Warmup run, notably to trigger all needed classloading. |
332 |
< |
super.runTest(); |
196 |
< |
long t0 = System.nanoTime(); |
197 |
< |
try { |
331 |
> |
for (int i = 0; i < 2; i++) { |
332 |
> |
long startTime = System.nanoTime(); |
333 |
|
super.runTest(); |
334 |
< |
} finally { |
335 |
< |
long elapsedMillis = millisElapsedSince(t0); |
336 |
< |
if (elapsedMillis >= profileThreshold) |
334 |
> |
long elapsedMillis = millisElapsedSince(startTime); |
335 |
> |
if (elapsedMillis < profileThreshold) |
336 |
> |
break; |
337 |
> |
// Never report first run of any test; treat it as a |
338 |
> |
// warmup run, notably to trigger all needed classloading, |
339 |
> |
if (i > 0) |
340 |
|
System.out.printf("%n%s: %d%n", toString(), elapsedMillis); |
341 |
|
} |
342 |
|
} |
348 |
|
main(suite(), args); |
349 |
|
} |
350 |
|
|
351 |
+ |
static class PithyResultPrinter extends junit.textui.ResultPrinter { |
352 |
+ |
PithyResultPrinter(java.io.PrintStream writer) { super(writer); } |
353 |
+ |
long runTime; |
354 |
+ |
public void startTest(Test test) {} |
355 |
+ |
protected void printHeader(long runTime) { |
356 |
+ |
this.runTime = runTime; // defer printing for later |
357 |
+ |
} |
358 |
+ |
protected void printFooter(TestResult result) { |
359 |
+ |
if (result.wasSuccessful()) { |
360 |
+ |
getWriter().println("OK (" + result.runCount() + " tests)" |
361 |
+ |
+ " Time: " + elapsedTimeAsString(runTime)); |
362 |
+ |
} else { |
363 |
+ |
getWriter().println("Time: " + elapsedTimeAsString(runTime)); |
364 |
+ |
super.printFooter(result); |
365 |
+ |
} |
366 |
+ |
} |
367 |
+ |
} |
368 |
+ |
|
369 |
+ |
/** |
370 |
+ |
* Returns a TestRunner that doesn't bother with unnecessary |
371 |
+ |
* fluff, like printing a "." for each test case. |
372 |
+ |
*/ |
373 |
+ |
static junit.textui.TestRunner newPithyTestRunner() { |
374 |
+ |
junit.textui.TestRunner runner = new junit.textui.TestRunner(); |
375 |
+ |
runner.setPrinter(new PithyResultPrinter(System.out)); |
376 |
+ |
return runner; |
377 |
+ |
} |
378 |
+ |
|
379 |
|
/** |
380 |
|
* Runs all unit tests in the given test suite. |
381 |
|
* Actual behavior influenced by jsr166.* system properties. |
387 |
|
System.setSecurityManager(new SecurityManager()); |
388 |
|
} |
389 |
|
for (int i = 0; i < suiteRuns; i++) { |
390 |
< |
TestResult result = junit.textui.TestRunner.run(suite); |
390 |
> |
TestResult result = newPithyTestRunner().doRun(suite); |
391 |
|
if (!result.wasSuccessful()) |
392 |
|
System.exit(1); |
393 |
|
System.gc(); |
442 |
|
public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; } |
443 |
|
public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; } |
444 |
|
public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; } |
445 |
< |
public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; } |
445 |
> |
public static boolean atLeastJava9() { |
446 |
> |
return JAVA_CLASS_VERSION >= 53.0 |
447 |
> |
// As of 2015-09, java9 still uses 52.0 class file version |
448 |
> |
|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$"); |
449 |
> |
} |
450 |
> |
public static boolean atLeastJava10() { |
451 |
> |
return JAVA_CLASS_VERSION >= 54.0 |
452 |
> |
|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$"); |
453 |
> |
} |
454 |
|
|
455 |
|
/** |
456 |
|
* Collects all JSR166 unit tests as one suite. |
471 |
|
AbstractQueuedLongSynchronizerTest.suite(), |
472 |
|
ArrayBlockingQueueTest.suite(), |
473 |
|
ArrayDequeTest.suite(), |
474 |
+ |
ArrayListTest.suite(), |
475 |
|
AtomicBooleanTest.suite(), |
476 |
|
AtomicIntegerArrayTest.suite(), |
477 |
|
AtomicIntegerFieldUpdaterTest.suite(), |
494 |
|
CopyOnWriteArrayListTest.suite(), |
495 |
|
CopyOnWriteArraySetTest.suite(), |
496 |
|
CountDownLatchTest.suite(), |
497 |
+ |
CountedCompleterTest.suite(), |
498 |
|
CyclicBarrierTest.suite(), |
499 |
|
DelayQueueTest.suite(), |
500 |
|
EntryTest.suite(), |
523 |
|
TreeMapTest.suite(), |
524 |
|
TreeSetTest.suite(), |
525 |
|
TreeSubMapTest.suite(), |
526 |
< |
TreeSubSetTest.suite()); |
526 |
> |
TreeSubSetTest.suite(), |
527 |
> |
VectorTest.suite()); |
528 |
|
|
529 |
|
// Java8+ test classes |
530 |
|
if (atLeastJava8()) { |
531 |
|
String[] java8TestClassNames = { |
532 |
+ |
"ArrayDeque8Test", |
533 |
|
"Atomic8Test", |
534 |
|
"CompletableFutureTest", |
535 |
|
"ConcurrentHashMap8Test", |
536 |
< |
"CountedCompleterTest", |
536 |
> |
"CountedCompleter8Test", |
537 |
|
"DoubleAccumulatorTest", |
538 |
|
"DoubleAdderTest", |
539 |
|
"ForkJoinPool8Test", |
540 |
|
"ForkJoinTask8Test", |
541 |
+ |
"LinkedBlockingDeque8Test", |
542 |
+ |
"LinkedBlockingQueue8Test", |
543 |
|
"LongAccumulatorTest", |
544 |
|
"LongAdderTest", |
545 |
|
"SplittableRandomTest", |
546 |
|
"StampedLockTest", |
547 |
+ |
"SubmissionPublisherTest", |
548 |
|
"ThreadLocalRandom8Test", |
549 |
+ |
"TimeUnit8Test", |
550 |
|
}; |
551 |
|
addNamedTestClasses(suite, java8TestClassNames); |
552 |
|
} |
554 |
|
// Java9+ test classes |
555 |
|
if (atLeastJava9()) { |
556 |
|
String[] java9TestClassNames = { |
557 |
< |
"ThreadPoolExecutor9Test", |
557 |
> |
"AtomicBoolean9Test", |
558 |
> |
"AtomicInteger9Test", |
559 |
> |
"AtomicIntegerArray9Test", |
560 |
> |
"AtomicLong9Test", |
561 |
> |
"AtomicLongArray9Test", |
562 |
> |
"AtomicReference9Test", |
563 |
> |
"AtomicReferenceArray9Test", |
564 |
> |
"ExecutorCompletionService9Test", |
565 |
> |
"ForkJoinPool9Test", |
566 |
|
}; |
567 |
|
addNamedTestClasses(suite, java9TestClassNames); |
568 |
|
} |
570 |
|
return suite; |
571 |
|
} |
572 |
|
|
573 |
+ |
/** Returns list of junit-style test method names in given class. */ |
574 |
+ |
public static ArrayList<String> testMethodNames(Class<?> testClass) { |
575 |
+ |
Method[] methods = testClass.getDeclaredMethods(); |
576 |
+ |
ArrayList<String> names = new ArrayList<>(methods.length); |
577 |
+ |
for (Method method : methods) { |
578 |
+ |
if (method.getName().startsWith("test") |
579 |
+ |
&& Modifier.isPublic(method.getModifiers()) |
580 |
+ |
// method.getParameterCount() requires jdk8+ |
581 |
+ |
&& method.getParameterTypes().length == 0) { |
582 |
+ |
names.add(method.getName()); |
583 |
+ |
} |
584 |
+ |
} |
585 |
+ |
return names; |
586 |
+ |
} |
587 |
+ |
|
588 |
+ |
/** |
589 |
+ |
* Returns junit-style testSuite for the given test class, but |
590 |
+ |
* parameterized by passing extra data to each test. |
591 |
+ |
*/ |
592 |
+ |
public static <ExtraData> Test parameterizedTestSuite |
593 |
+ |
(Class<? extends JSR166TestCase> testClass, |
594 |
+ |
Class<ExtraData> dataClass, |
595 |
+ |
ExtraData data) { |
596 |
+ |
try { |
597 |
+ |
TestSuite suite = new TestSuite(); |
598 |
+ |
Constructor c = |
599 |
+ |
testClass.getDeclaredConstructor(dataClass, String.class); |
600 |
+ |
for (String methodName : testMethodNames(testClass)) |
601 |
+ |
suite.addTest((Test) c.newInstance(data, methodName)); |
602 |
+ |
return suite; |
603 |
+ |
} catch (Exception e) { |
604 |
+ |
throw new Error(e); |
605 |
+ |
} |
606 |
+ |
} |
607 |
+ |
|
608 |
+ |
/** |
609 |
+ |
* Returns junit-style testSuite for the jdk8 extension of the |
610 |
+ |
* given test class, but parameterized by passing extra data to |
611 |
+ |
* each test. Uses reflection to allow compilation in jdk7. |
612 |
+ |
*/ |
613 |
+ |
public static <ExtraData> Test jdk8ParameterizedTestSuite |
614 |
+ |
(Class<? extends JSR166TestCase> testClass, |
615 |
+ |
Class<ExtraData> dataClass, |
616 |
+ |
ExtraData data) { |
617 |
+ |
if (atLeastJava8()) { |
618 |
+ |
String name = testClass.getName(); |
619 |
+ |
String name8 = name.replaceAll("Test$", "8Test"); |
620 |
+ |
if (name.equals(name8)) throw new Error(name); |
621 |
+ |
try { |
622 |
+ |
return (Test) |
623 |
+ |
Class.forName(name8) |
624 |
+ |
.getMethod("testSuite", new Class[] { dataClass }) |
625 |
+ |
.invoke(null, data); |
626 |
+ |
} catch (Exception e) { |
627 |
+ |
throw new Error(e); |
628 |
+ |
} |
629 |
+ |
} else { |
630 |
+ |
return new TestSuite(); |
631 |
+ |
} |
632 |
+ |
} |
633 |
+ |
|
634 |
|
// Delays for timing-dependent tests, in milliseconds. |
635 |
|
|
636 |
|
public static long SHORT_DELAY_MS; |
639 |
|
public static long LONG_DELAY_MS; |
640 |
|
|
641 |
|
/** |
642 |
< |
* Returns the shortest timed delay. This could |
643 |
< |
* be reimplemented to use for example a Property. |
642 |
> |
* Returns the shortest timed delay. This can be scaled up for |
643 |
> |
* slow machines using the jsr166.delay.factor system property, |
644 |
> |
* or via jtreg's -timeoutFactor: flag. |
645 |
> |
* http://openjdk.java.net/jtreg/command-help.html |
646 |
|
*/ |
647 |
|
protected long getShortDelay() { |
648 |
< |
return 50; |
648 |
> |
return (long) (50 * delayFactor); |
649 |
|
} |
650 |
|
|
651 |
|
/** |
658 |
|
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
659 |
|
} |
660 |
|
|
661 |
+ |
private static final long TIMEOUT_DELAY_MS |
662 |
+ |
= (long) (12.0 * Math.cbrt(delayFactor)); |
663 |
+ |
|
664 |
|
/** |
665 |
< |
* Returns a timeout in milliseconds to be used in tests that |
666 |
< |
* verify that operations block or time out. |
665 |
> |
* Returns a timeout in milliseconds to be used in tests that verify |
666 |
> |
* that operations block or time out. We want this to be longer |
667 |
> |
* than the OS scheduling quantum, but not too long, so don't scale |
668 |
> |
* linearly with delayFactor; we use "crazy" cube root instead. |
669 |
|
*/ |
670 |
< |
long timeoutMillis() { |
671 |
< |
return SHORT_DELAY_MS / 4; |
670 |
> |
static long timeoutMillis() { |
671 |
> |
return TIMEOUT_DELAY_MS; |
672 |
|
} |
673 |
|
|
674 |
|
/** |
675 |
< |
* Returns a new Date instance representing a time delayMillis |
676 |
< |
* milliseconds in the future. |
675 |
> |
* Returns a new Date instance representing a time at least |
676 |
> |
* delayMillis milliseconds in the future. |
677 |
|
*/ |
678 |
|
Date delayedDate(long delayMillis) { |
679 |
< |
return new Date(System.currentTimeMillis() + delayMillis); |
679 |
> |
// Add 1 because currentTimeMillis is known to round into the past. |
680 |
> |
return new Date(System.currentTimeMillis() + delayMillis + 1); |
681 |
|
} |
682 |
|
|
683 |
|
/** |
684 |
|
* The first exception encountered if any threadAssertXXX method fails. |
685 |
|
*/ |
686 |
|
private final AtomicReference<Throwable> threadFailure |
687 |
< |
= new AtomicReference<Throwable>(null); |
687 |
> |
= new AtomicReference<>(null); |
688 |
|
|
689 |
|
/** |
690 |
|
* Records an exception so that it can be rethrown later in the test |
693 |
|
* the same test have no effect. |
694 |
|
*/ |
695 |
|
public void threadRecordFailure(Throwable t) { |
696 |
+ |
System.err.println(t); |
697 |
+ |
dumpTestThreads(); |
698 |
|
threadFailure.compareAndSet(null, t); |
699 |
|
} |
700 |
|
|
702 |
|
setDelays(); |
703 |
|
} |
704 |
|
|
705 |
+ |
void tearDownFail(String format, Object... args) { |
706 |
+ |
String msg = toString() + ": " + String.format(format, args); |
707 |
+ |
System.err.println(msg); |
708 |
+ |
dumpTestThreads(); |
709 |
+ |
throw new AssertionFailedError(msg); |
710 |
+ |
} |
711 |
+ |
|
712 |
|
/** |
713 |
|
* Extra checks that get done for all test cases. |
714 |
|
* |
736 |
|
} |
737 |
|
|
738 |
|
if (Thread.interrupted()) |
739 |
< |
throw new AssertionFailedError("interrupt status set in main thread"); |
739 |
> |
tearDownFail("interrupt status set in main thread"); |
740 |
|
|
741 |
|
checkForkJoinPoolThreadLeaks(); |
742 |
|
} |
743 |
|
|
744 |
|
/** |
745 |
< |
* Finds missing try { ... } finally { joinPool(e); } |
745 |
> |
* Finds missing PoolCleaners |
746 |
|
*/ |
747 |
|
void checkForkJoinPoolThreadLeaks() throws InterruptedException { |
748 |
< |
Thread[] survivors = new Thread[5]; |
748 |
> |
Thread[] survivors = new Thread[7]; |
749 |
|
int count = Thread.enumerate(survivors); |
750 |
|
for (int i = 0; i < count; i++) { |
751 |
|
Thread thread = survivors[i]; |
753 |
|
if (name.startsWith("ForkJoinPool-")) { |
754 |
|
// give thread some time to terminate |
755 |
|
thread.join(LONG_DELAY_MS); |
756 |
< |
if (!thread.isAlive()) continue; |
757 |
< |
throw new AssertionFailedError |
758 |
< |
(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n", |
491 |
< |
toString(), name)); |
756 |
> |
if (thread.isAlive()) |
757 |
> |
tearDownFail("Found leaked ForkJoinPool thread thread=%s", |
758 |
> |
thread); |
759 |
|
} |
760 |
|
} |
761 |
+ |
|
762 |
+ |
if (!ForkJoinPool.commonPool() |
763 |
+ |
.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS)) |
764 |
+ |
tearDownFail("ForkJoin common pool thread stuck"); |
765 |
|
} |
766 |
|
|
767 |
|
/** |
774 |
|
fail(reason); |
775 |
|
} catch (AssertionFailedError t) { |
776 |
|
threadRecordFailure(t); |
777 |
< |
fail(reason); |
777 |
> |
throw t; |
778 |
|
} |
779 |
|
} |
780 |
|
|
901 |
|
/** |
902 |
|
* Delays, via Thread.sleep, for the given millisecond delay, but |
903 |
|
* if the sleep is shorter than specified, may re-sleep or yield |
904 |
< |
* until time elapses. |
904 |
> |
* until time elapses. Ensures that the given time, as measured |
905 |
> |
* by System.nanoTime(), has elapsed. |
906 |
|
*/ |
907 |
|
static void delay(long millis) throws InterruptedException { |
908 |
< |
long startTime = System.nanoTime(); |
909 |
< |
long ns = millis * 1000 * 1000; |
910 |
< |
for (;;) { |
908 |
> |
long nanos = millis * (1000 * 1000); |
909 |
> |
final long wakeupTime = System.nanoTime() + nanos; |
910 |
> |
do { |
911 |
|
if (millis > 0L) |
912 |
|
Thread.sleep(millis); |
913 |
|
else // too short to sleep |
914 |
|
Thread.yield(); |
915 |
< |
long d = ns - (System.nanoTime() - startTime); |
916 |
< |
if (d > 0L) |
917 |
< |
millis = d / (1000 * 1000); |
918 |
< |
else |
919 |
< |
break; |
915 |
> |
nanos = wakeupTime - System.nanoTime(); |
916 |
> |
millis = nanos / (1000 * 1000); |
917 |
> |
} while (nanos >= 0L); |
918 |
> |
} |
919 |
> |
|
920 |
> |
/** |
921 |
> |
* Allows use of try-with-resources with per-test thread pools. |
922 |
> |
*/ |
923 |
> |
class PoolCleaner implements AutoCloseable { |
924 |
> |
private final ExecutorService pool; |
925 |
> |
public PoolCleaner(ExecutorService pool) { this.pool = pool; } |
926 |
> |
public void close() { joinPool(pool); } |
927 |
> |
} |
928 |
> |
|
929 |
> |
/** |
930 |
> |
* An extension of PoolCleaner that has an action to release the pool. |
931 |
> |
*/ |
932 |
> |
class PoolCleanerWithReleaser extends PoolCleaner { |
933 |
> |
private final Runnable releaser; |
934 |
> |
public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) { |
935 |
> |
super(pool); |
936 |
> |
this.releaser = releaser; |
937 |
|
} |
938 |
+ |
public void close() { |
939 |
+ |
try { |
940 |
+ |
releaser.run(); |
941 |
+ |
} finally { |
942 |
+ |
super.close(); |
943 |
+ |
} |
944 |
+ |
} |
945 |
+ |
} |
946 |
+ |
|
947 |
+ |
PoolCleaner cleaner(ExecutorService pool) { |
948 |
+ |
return new PoolCleaner(pool); |
949 |
+ |
} |
950 |
+ |
|
951 |
+ |
PoolCleaner cleaner(ExecutorService pool, Runnable releaser) { |
952 |
+ |
return new PoolCleanerWithReleaser(pool, releaser); |
953 |
+ |
} |
954 |
+ |
|
955 |
+ |
PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) { |
956 |
+ |
return new PoolCleanerWithReleaser(pool, releaser(latch)); |
957 |
+ |
} |
958 |
+ |
|
959 |
+ |
Runnable releaser(final CountDownLatch latch) { |
960 |
+ |
return new Runnable() { public void run() { |
961 |
+ |
do { latch.countDown(); } |
962 |
+ |
while (latch.getCount() > 0); |
963 |
+ |
}}; |
964 |
+ |
} |
965 |
+ |
|
966 |
+ |
PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) { |
967 |
+ |
return new PoolCleanerWithReleaser(pool, releaser(flag)); |
968 |
+ |
} |
969 |
+ |
|
970 |
+ |
Runnable releaser(final AtomicBoolean flag) { |
971 |
+ |
return new Runnable() { public void run() { flag.set(true); }}; |
972 |
|
} |
973 |
|
|
974 |
|
/** |
975 |
|
* Waits out termination of a thread pool or fails doing so. |
976 |
|
*/ |
977 |
< |
void joinPool(ExecutorService exec) { |
977 |
> |
void joinPool(ExecutorService pool) { |
978 |
|
try { |
979 |
< |
exec.shutdown(); |
980 |
< |
if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) |
981 |
< |
fail("ExecutorService " + exec + |
982 |
< |
" did not terminate in a timely manner"); |
979 |
> |
pool.shutdown(); |
980 |
> |
if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) { |
981 |
> |
try { |
982 |
> |
threadFail("ExecutorService " + pool + |
983 |
> |
" did not terminate in a timely manner"); |
984 |
> |
} finally { |
985 |
> |
// last resort, for the benefit of subsequent tests |
986 |
> |
pool.shutdownNow(); |
987 |
> |
pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS); |
988 |
> |
} |
989 |
> |
} |
990 |
|
} catch (SecurityException ok) { |
991 |
|
// Allowed in case test doesn't have privs |
992 |
|
} catch (InterruptedException fail) { |
993 |
< |
fail("Unexpected InterruptedException"); |
993 |
> |
threadFail("Unexpected InterruptedException"); |
994 |
> |
} |
995 |
> |
} |
996 |
> |
|
997 |
> |
/** |
998 |
> |
* Like Runnable, but with the freedom to throw anything. |
999 |
> |
* junit folks had the same idea: |
1000 |
> |
* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html |
1001 |
> |
*/ |
1002 |
> |
interface Action { public void run() throws Throwable; } |
1003 |
> |
|
1004 |
> |
/** |
1005 |
> |
* Runs all the given actions in parallel, failing if any fail. |
1006 |
> |
* Useful for running multiple variants of tests that are |
1007 |
> |
* necessarily individually slow because they must block. |
1008 |
> |
*/ |
1009 |
> |
void testInParallel(Action ... actions) { |
1010 |
> |
ExecutorService pool = Executors.newCachedThreadPool(); |
1011 |
> |
try (PoolCleaner cleaner = cleaner(pool)) { |
1012 |
> |
ArrayList<Future<?>> futures = new ArrayList<>(actions.length); |
1013 |
> |
for (final Action action : actions) |
1014 |
> |
futures.add(pool.submit(new CheckedRunnable() { |
1015 |
> |
public void realRun() throws Throwable { action.run();}})); |
1016 |
> |
for (Future<?> future : futures) |
1017 |
> |
try { |
1018 |
> |
assertNull(future.get(LONG_DELAY_MS, MILLISECONDS)); |
1019 |
> |
} catch (ExecutionException ex) { |
1020 |
> |
threadUnexpectedException(ex.getCause()); |
1021 |
> |
} catch (Exception ex) { |
1022 |
> |
threadUnexpectedException(ex); |
1023 |
> |
} |
1024 |
|
} |
1025 |
|
} |
1026 |
|
|
1027 |
|
/** |
1028 |
< |
* A debugging tool to print all stack traces, as jstack does. |
1028 |
> |
* A debugging tool to print stack traces of most threads, as jstack does. |
1029 |
> |
* Uninteresting threads are filtered out. |
1030 |
|
*/ |
1031 |
< |
static void printAllStackTraces() { |
1032 |
< |
for (ThreadInfo info : |
1033 |
< |
ManagementFactory.getThreadMXBean() |
1034 |
< |
.dumpAllThreads(true, true)) |
1031 |
> |
static void dumpTestThreads() { |
1032 |
> |
SecurityManager sm = System.getSecurityManager(); |
1033 |
> |
if (sm != null) { |
1034 |
> |
try { |
1035 |
> |
System.setSecurityManager(null); |
1036 |
> |
} catch (SecurityException giveUp) { |
1037 |
> |
return; |
1038 |
> |
} |
1039 |
> |
} |
1040 |
> |
|
1041 |
> |
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean(); |
1042 |
> |
System.err.println("------ stacktrace dump start ------"); |
1043 |
> |
for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) { |
1044 |
> |
final String name = info.getThreadName(); |
1045 |
> |
String lockName; |
1046 |
> |
if ("Signal Dispatcher".equals(name)) |
1047 |
> |
continue; |
1048 |
> |
if ("Reference Handler".equals(name) |
1049 |
> |
&& (lockName = info.getLockName()) != null |
1050 |
> |
&& lockName.startsWith("java.lang.ref.Reference$Lock")) |
1051 |
> |
continue; |
1052 |
> |
if ("Finalizer".equals(name) |
1053 |
> |
&& (lockName = info.getLockName()) != null |
1054 |
> |
&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock")) |
1055 |
> |
continue; |
1056 |
> |
if ("checkForWedgedTest".equals(name)) |
1057 |
> |
continue; |
1058 |
|
System.err.print(info); |
1059 |
+ |
} |
1060 |
+ |
System.err.println("------ stacktrace dump end ------"); |
1061 |
+ |
|
1062 |
+ |
if (sm != null) System.setSecurityManager(sm); |
1063 |
|
} |
1064 |
|
|
1065 |
|
/** |
1079 |
|
delay(millis); |
1080 |
|
assertTrue(thread.isAlive()); |
1081 |
|
} catch (InterruptedException fail) { |
1082 |
< |
fail("Unexpected InterruptedException"); |
1082 |
> |
threadFail("Unexpected InterruptedException"); |
1083 |
|
} |
1084 |
|
} |
1085 |
|
|
1101 |
|
for (Thread thread : threads) |
1102 |
|
assertTrue(thread.isAlive()); |
1103 |
|
} catch (InterruptedException fail) { |
1104 |
< |
fail("Unexpected InterruptedException"); |
1104 |
> |
threadFail("Unexpected InterruptedException"); |
1105 |
|
} |
1106 |
|
} |
1107 |
|
|
1143 |
|
} |
1144 |
|
|
1145 |
|
/** |
1146 |
+ |
* The maximum number of consecutive spurious wakeups we should |
1147 |
+ |
* tolerate (from APIs like LockSupport.park) before failing a test. |
1148 |
+ |
*/ |
1149 |
+ |
static final int MAX_SPURIOUS_WAKEUPS = 10; |
1150 |
+ |
|
1151 |
+ |
/** |
1152 |
|
* The number of elements to place in collections, arrays, etc. |
1153 |
|
*/ |
1154 |
|
public static final int SIZE = 20; |
1252 |
|
} |
1253 |
|
public void refresh() {} |
1254 |
|
public String toString() { |
1255 |
< |
List<Permission> ps = new ArrayList<Permission>(); |
1255 |
> |
List<Permission> ps = new ArrayList<>(); |
1256 |
|
for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();) |
1257 |
|
ps.add(e.nextElement()); |
1258 |
|
return "AdjustablePolicy with permissions " + ps; |
1282 |
|
* Sleeps until the given time has elapsed. |
1283 |
|
* Throws AssertionFailedError if interrupted. |
1284 |
|
*/ |
1285 |
< |
void sleep(long millis) { |
1285 |
> |
static void sleep(long millis) { |
1286 |
|
try { |
1287 |
|
delay(millis); |
1288 |
|
} catch (InterruptedException fail) { |
1298 |
|
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
1299 |
|
*/ |
1300 |
|
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
1301 |
< |
long startTime = System.nanoTime(); |
1301 |
> |
long startTime = 0L; |
1302 |
|
for (;;) { |
1303 |
|
Thread.State s = thread.getState(); |
1304 |
|
if (s == Thread.State.BLOCKED || |
1307 |
|
return; |
1308 |
|
else if (s == Thread.State.TERMINATED) |
1309 |
|
fail("Unexpected thread termination"); |
1310 |
+ |
else if (startTime == 0L) |
1311 |
+ |
startTime = System.nanoTime(); |
1312 |
|
else if (millisElapsedSince(startTime) > timeoutMillis) { |
1313 |
|
threadAssertTrue(thread.isAlive()); |
1314 |
< |
return; |
1314 |
> |
fail("timed out waiting for thread to enter wait state"); |
1315 |
> |
} |
1316 |
> |
Thread.yield(); |
1317 |
> |
} |
1318 |
> |
} |
1319 |
> |
|
1320 |
> |
/** |
1321 |
> |
* Spin-waits up to the specified number of milliseconds for the given |
1322 |
> |
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING, |
1323 |
> |
* and additionally satisfy the given condition. |
1324 |
> |
*/ |
1325 |
> |
void waitForThreadToEnterWaitState( |
1326 |
> |
Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) { |
1327 |
> |
long startTime = 0L; |
1328 |
> |
for (;;) { |
1329 |
> |
Thread.State s = thread.getState(); |
1330 |
> |
if (s == Thread.State.BLOCKED || |
1331 |
> |
s == Thread.State.WAITING || |
1332 |
> |
s == Thread.State.TIMED_WAITING) { |
1333 |
> |
try { |
1334 |
> |
if (waitingForGodot.call()) |
1335 |
> |
return; |
1336 |
> |
} catch (Throwable fail) { threadUnexpectedException(fail); } |
1337 |
> |
} |
1338 |
> |
else if (s == Thread.State.TERMINATED) |
1339 |
> |
fail("Unexpected thread termination"); |
1340 |
> |
else if (startTime == 0L) |
1341 |
> |
startTime = System.nanoTime(); |
1342 |
> |
else if (millisElapsedSince(startTime) > timeoutMillis) { |
1343 |
> |
threadAssertTrue(thread.isAlive()); |
1344 |
> |
fail("timed out waiting for thread to enter wait state"); |
1345 |
|
} |
1346 |
|
Thread.yield(); |
1347 |
|
} |
1348 |
|
} |
1349 |
|
|
1350 |
|
/** |
1351 |
< |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
1352 |
< |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
1351 |
> |
* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to |
1352 |
> |
* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
1353 |
|
*/ |
1354 |
|
void waitForThreadToEnterWaitState(Thread thread) { |
1355 |
|
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
1356 |
|
} |
1357 |
|
|
1358 |
|
/** |
1359 |
+ |
* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to |
1360 |
+ |
* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING, |
1361 |
+ |
* and additionally satisfy the given condition. |
1362 |
+ |
*/ |
1363 |
+ |
void waitForThreadToEnterWaitState( |
1364 |
+ |
Thread thread, Callable<Boolean> waitingForGodot) { |
1365 |
+ |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot); |
1366 |
+ |
} |
1367 |
+ |
|
1368 |
+ |
/** |
1369 |
|
* Returns the number of milliseconds since time given by |
1370 |
|
* startNanoTime, which must have been previously returned from a |
1371 |
|
* call to {@link System#nanoTime()}. |
1427 |
|
} finally { |
1428 |
|
if (t.getState() != Thread.State.TERMINATED) { |
1429 |
|
t.interrupt(); |
1430 |
< |
fail("Test timed out"); |
1430 |
> |
threadFail("timed out waiting for thread to terminate"); |
1431 |
|
} |
1432 |
|
} |
1433 |
|
} |
1552 |
|
public static final String TEST_STRING = "a test string"; |
1553 |
|
|
1554 |
|
public static class StringTask implements Callable<String> { |
1555 |
< |
public String call() { return TEST_STRING; } |
1555 |
> |
final String value; |
1556 |
> |
public StringTask() { this(TEST_STRING); } |
1557 |
> |
public StringTask(String value) { this.value = value; } |
1558 |
> |
public String call() { return value; } |
1559 |
|
} |
1560 |
|
|
1561 |
|
public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) { |
1568 |
|
}}; |
1569 |
|
} |
1570 |
|
|
1571 |
< |
public Runnable awaiter(final CountDownLatch latch) { |
1571 |
> |
public Runnable countDowner(final CountDownLatch latch) { |
1572 |
|
return new CheckedRunnable() { |
1573 |
|
public void realRun() throws InterruptedException { |
1574 |
< |
await(latch); |
1574 |
> |
latch.countDown(); |
1575 |
|
}}; |
1576 |
|
} |
1577 |
|
|
1578 |
< |
public void await(CountDownLatch latch) { |
1578 |
> |
class LatchAwaiter extends CheckedRunnable { |
1579 |
> |
static final int NEW = 0; |
1580 |
> |
static final int RUNNING = 1; |
1581 |
> |
static final int DONE = 2; |
1582 |
> |
final CountDownLatch latch; |
1583 |
> |
int state = NEW; |
1584 |
> |
LatchAwaiter(CountDownLatch latch) { this.latch = latch; } |
1585 |
> |
public void realRun() throws InterruptedException { |
1586 |
> |
state = 1; |
1587 |
> |
await(latch); |
1588 |
> |
state = 2; |
1589 |
> |
} |
1590 |
> |
} |
1591 |
> |
|
1592 |
> |
public LatchAwaiter awaiter(CountDownLatch latch) { |
1593 |
> |
return new LatchAwaiter(latch); |
1594 |
> |
} |
1595 |
> |
|
1596 |
> |
public void await(CountDownLatch latch, long timeoutMillis) { |
1597 |
|
try { |
1598 |
< |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
1598 |
> |
if (!latch.await(timeoutMillis, MILLISECONDS)) |
1599 |
> |
fail("timed out waiting for CountDownLatch for " |
1600 |
> |
+ (timeoutMillis/1000) + " sec"); |
1601 |
|
} catch (Throwable fail) { |
1602 |
|
threadUnexpectedException(fail); |
1603 |
|
} |
1604 |
|
} |
1605 |
|
|
1606 |
+ |
public void await(CountDownLatch latch) { |
1607 |
+ |
await(latch, LONG_DELAY_MS); |
1608 |
+ |
} |
1609 |
+ |
|
1610 |
|
public void await(Semaphore semaphore) { |
1611 |
|
try { |
1612 |
< |
assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)); |
1612 |
> |
if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)) |
1613 |
> |
fail("timed out waiting for Semaphore for " |
1614 |
> |
+ (LONG_DELAY_MS/1000) + " sec"); |
1615 |
|
} catch (Throwable fail) { |
1616 |
|
threadUnexpectedException(fail); |
1617 |
|
} |
1841 |
|
* A CyclicBarrier that uses timed await and fails with |
1842 |
|
* AssertionFailedErrors instead of throwing checked exceptions. |
1843 |
|
*/ |
1844 |
< |
public class CheckedBarrier extends CyclicBarrier { |
1844 |
> |
public static class CheckedBarrier extends CyclicBarrier { |
1845 |
|
public CheckedBarrier(int parties) { super(parties); } |
1846 |
|
|
1847 |
|
public int await() { |
1905 |
|
} |
1906 |
|
} |
1907 |
|
|
1908 |
+ |
void assertImmutable(final Object o) { |
1909 |
+ |
if (o instanceof Collection) { |
1910 |
+ |
assertThrows( |
1911 |
+ |
UnsupportedOperationException.class, |
1912 |
+ |
new Runnable() { public void run() { |
1913 |
+ |
((Collection) o).add(null);}}); |
1914 |
+ |
} |
1915 |
+ |
} |
1916 |
+ |
|
1917 |
|
@SuppressWarnings("unchecked") |
1918 |
|
<T> T serialClone(T o) { |
1919 |
|
try { |
1920 |
|
ObjectInputStream ois = new ObjectInputStream |
1921 |
|
(new ByteArrayInputStream(serialBytes(o))); |
1922 |
|
T clone = (T) ois.readObject(); |
1923 |
+ |
if (o == clone) assertImmutable(o); |
1924 |
|
assertSame(o.getClass(), clone.getClass()); |
1925 |
|
return clone; |
1926 |
|
} catch (Throwable fail) { |
1929 |
|
} |
1930 |
|
} |
1931 |
|
|
1932 |
+ |
/** |
1933 |
+ |
* A version of serialClone that leaves error handling (for |
1934 |
+ |
* e.g. NotSerializableException) up to the caller. |
1935 |
+ |
*/ |
1936 |
+ |
@SuppressWarnings("unchecked") |
1937 |
+ |
<T> T serialClonePossiblyFailing(T o) |
1938 |
+ |
throws ReflectiveOperationException, java.io.IOException { |
1939 |
+ |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1940 |
+ |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1941 |
+ |
oos.writeObject(o); |
1942 |
+ |
oos.flush(); |
1943 |
+ |
oos.close(); |
1944 |
+ |
ObjectInputStream ois = new ObjectInputStream |
1945 |
+ |
(new ByteArrayInputStream(bos.toByteArray())); |
1946 |
+ |
T clone = (T) ois.readObject(); |
1947 |
+ |
if (o == clone) assertImmutable(o); |
1948 |
+ |
assertSame(o.getClass(), clone.getClass()); |
1949 |
+ |
return clone; |
1950 |
+ |
} |
1951 |
+ |
|
1952 |
+ |
/** |
1953 |
+ |
* If o implements Cloneable and has a public clone method, |
1954 |
+ |
* returns a clone of o, else null. |
1955 |
+ |
*/ |
1956 |
+ |
@SuppressWarnings("unchecked") |
1957 |
+ |
<T> T cloneableClone(T o) { |
1958 |
+ |
if (!(o instanceof Cloneable)) return null; |
1959 |
+ |
final T clone; |
1960 |
+ |
try { |
1961 |
+ |
clone = (T) o.getClass().getMethod("clone").invoke(o); |
1962 |
+ |
} catch (NoSuchMethodException ok) { |
1963 |
+ |
return null; |
1964 |
+ |
} catch (ReflectiveOperationException unexpected) { |
1965 |
+ |
throw new Error(unexpected); |
1966 |
+ |
} |
1967 |
+ |
assertNotSame(o, clone); // not 100% guaranteed by spec |
1968 |
+ |
assertSame(o.getClass(), clone.getClass()); |
1969 |
+ |
return clone; |
1970 |
+ |
} |
1971 |
+ |
|
1972 |
|
public void assertThrows(Class<? extends Throwable> expectedExceptionClass, |
1973 |
|
Runnable... throwingActions) { |
1974 |
|
for (Runnable throwingAction : throwingActions) { |
1997 |
|
} catch (NoSuchElementException success) {} |
1998 |
|
assertFalse(it.hasNext()); |
1999 |
|
} |
2000 |
+ |
|
2001 |
+ |
public <T> Callable<T> callableThrowing(final Exception ex) { |
2002 |
+ |
return new Callable<T>() { public T call() throws Exception { throw ex; }}; |
2003 |
+ |
} |
2004 |
+ |
|
2005 |
+ |
public Runnable runnableThrowing(final RuntimeException ex) { |
2006 |
+ |
return new Runnable() { public void run() { throw ex; }}; |
2007 |
+ |
} |
2008 |
+ |
|
2009 |
+ |
/** A reusable thread pool to be shared by tests. */ |
2010 |
+ |
static final ExecutorService cachedThreadPool = |
2011 |
+ |
new ThreadPoolExecutor(0, Integer.MAX_VALUE, |
2012 |
+ |
1000L, MILLISECONDS, |
2013 |
+ |
new SynchronousQueue<Runnable>()); |
2014 |
+ |
|
2015 |
+ |
static <T> void shuffle(T[] array) { |
2016 |
+ |
Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current()); |
2017 |
+ |
} |
2018 |
|
} |