--- jsr166/src/test/tck/JSR166TestCase.java 2015/10/04 04:40:00 1.162
+++ jsr166/src/test/tck/JSR166TestCase.java 2018/07/22 21:37:31 1.247
@@ -1,11 +1,45 @@
/*
- * Written by Doug Lea with assistance from members of JCP JSR-166
- * Expert Group and released to the public domain, as explained at
+ * Written by Doug Lea and Martin Buchholz with assistance from
+ * members of JCP JSR-166 Expert Group and released to the public
+ * domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
* Other contributors include Andrew Wright, Jeffrey Hayes,
* Pat Fisher, Mike Judd.
*/
+/*
+ * @test
+ * @summary JSR-166 tck tests, in a number of variations.
+ * The first is the conformance testing variant,
+ * while others also test implementation details.
+ * @build *
+ * @modules java.management
+ * @run junit/othervm/timeout=1000 JSR166TestCase
+ * @run junit/othervm/timeout=1000
+ * --add-opens java.base/java.util.concurrent=ALL-UNNAMED
+ * --add-opens java.base/java.lang=ALL-UNNAMED
+ * -Djsr166.testImplementationDetails=true
+ * JSR166TestCase
+ * @run junit/othervm/timeout=1000
+ * --add-opens java.base/java.util.concurrent=ALL-UNNAMED
+ * --add-opens java.base/java.lang=ALL-UNNAMED
+ * -Djsr166.testImplementationDetails=true
+ * -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
+ * JSR166TestCase
+ * @run junit/othervm/timeout=1000
+ * --add-opens java.base/java.util.concurrent=ALL-UNNAMED
+ * --add-opens java.base/java.lang=ALL-UNNAMED
+ * -Djsr166.testImplementationDetails=true
+ * -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
+ * -Djava.util.secureRandomSeed=true
+ * JSR166TestCase
+ * @run junit/othervm/timeout=1000/policy=tck.policy
+ * --add-opens java.base/java.util.concurrent=ALL-UNNAMED
+ * --add-opens java.base/java.lang=ALL-UNNAMED
+ * -Djsr166.testImplementationDetails=true
+ * JSR166TestCase
+ */
+
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static java.util.concurrent.TimeUnit.MINUTES;
import static java.util.concurrent.TimeUnit.NANOSECONDS;
@@ -29,32 +63,45 @@ import java.security.ProtectionDomain;
import java.security.SecurityPermission;
import java.util.ArrayList;
import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
import java.util.Date;
+import java.util.Deque;
import java.util.Enumeration;
+import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.NoSuchElementException;
import java.util.PropertyPermission;
+import java.util.Set;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.Callable;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.CyclicBarrier;
import java.util.concurrent.ExecutionException;
+import java.util.concurrent.Executor;
import java.util.concurrent.Executors;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ForkJoinPool;
import java.util.concurrent.Future;
+import java.util.concurrent.FutureTask;
import java.util.concurrent.RecursiveAction;
import java.util.concurrent.RecursiveTask;
+import java.util.concurrent.RejectedExecutionException;
import java.util.concurrent.RejectedExecutionHandler;
import java.util.concurrent.Semaphore;
+import java.util.concurrent.ScheduledExecutorService;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadFactory;
+import java.util.concurrent.ThreadLocalRandom;
import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
+import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicReference;
import java.util.regex.Pattern;
-import junit.framework.AssertionFailedError;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestResult;
@@ -109,8 +156,7 @@ import junit.framework.TestSuite;
* methods as there are exceptions the method can throw. Sometimes
* there are multiple tests per JSR166 method when the different
* "normal" behaviors differ significantly. And sometimes testcases
- * cover multiple methods when they cannot be tested in
- * isolation.
+ * cover multiple methods when they cannot be tested in isolation.
*
*
The documentation style for testcases is to provide as javadoc
* a simple sentence or two describing the property that the testcase
@@ -173,6 +219,44 @@ public class JSR166TestCase extends Test
private static final int suiteRuns =
Integer.getInteger("jsr166.suiteRuns", 1);
+ /**
+ * Returns the value of the system property, or NaN if not defined.
+ */
+ private static float systemPropertyValue(String name) {
+ String floatString = System.getProperty(name);
+ if (floatString == null)
+ return Float.NaN;
+ try {
+ return Float.parseFloat(floatString);
+ } catch (NumberFormatException ex) {
+ throw new IllegalArgumentException(
+ String.format("Bad float value in system property %s=%s",
+ name, floatString));
+ }
+ }
+
+ /**
+ * The scaling factor to apply to standard delays used in tests.
+ * May be initialized from any of:
+ * - the "jsr166.delay.factor" system property
+ * - the "test.timeout.factor" system property (as used by jtreg)
+ * See: http://openjdk.java.net/jtreg/tag-spec.html
+ * - hard-coded fuzz factor when using a known slowpoke VM
+ */
+ private static final float delayFactor = delayFactor();
+
+ private static float delayFactor() {
+ float x;
+ if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
+ return x;
+ if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
+ return x;
+ String prop = System.getProperty("java.vm.version");
+ if (prop != null && prop.matches(".*debug.*"))
+ return 4.0f; // How much slower is fastdebug than product?!
+ return 1.0f;
+ }
+
public JSR166TestCase() { super(); }
public JSR166TestCase(String name) { super(name); }
@@ -188,19 +272,32 @@ public class JSR166TestCase extends Test
return (regex == null) ? null : Pattern.compile(regex);
}
+ // Instrumentation to debug very rare, but very annoying hung test runs.
static volatile TestCase currentTestCase;
+ // static volatile int currentRun = 0;
static {
Runnable checkForWedgedTest = new Runnable() { public void run() {
- // avoid spurious reports with enormous runsPerTest
- final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
+ // Avoid spurious reports with enormous runsPerTest.
+ // A single test case run should never take more than 1 second.
+ // But let's cap it at the high end too ...
+ final int timeoutMinutes =
+ Math.min(15, Math.max(runsPerTest / 60, 1));
for (TestCase lastTestCase = currentTestCase;;) {
try { MINUTES.sleep(timeoutMinutes); }
catch (InterruptedException unexpected) { break; }
if (lastTestCase == currentTestCase) {
- System.err.println
- ("Looks like we're stuck running test: "
- + lastTestCase);
+ System.err.printf(
+ "Looks like we're stuck running test: %s%n",
+ lastTestCase);
+// System.err.printf(
+// "Looks like we're stuck running test: %s (%d/%d)%n",
+// lastTestCase, currentRun, runsPerTest);
+// System.err.println("availableProcessors=" +
+// Runtime.getRuntime().availableProcessors());
+// System.err.printf("cpu model = %s%n", cpuModel());
dumpTestThreads();
+ // one stack dump is probably enough; more would be spam
+ break;
}
lastTestCase = currentTestCase;
}}};
@@ -209,6 +306,18 @@ public class JSR166TestCase extends Test
thread.start();
}
+// public static String cpuModel() {
+// try {
+// java.util.regex.Matcher matcher
+// = Pattern.compile("model name\\s*: (.*)")
+// .matcher(new String(
+// java.nio.file.Files.readAllBytes(
+// java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
+// matcher.find();
+// return matcher.group(1);
+// } catch (Exception ex) { return null; }
+// }
+
public void runBare() throws Throwable {
currentTestCase = this;
if (methodFilter == null
@@ -218,6 +327,7 @@ public class JSR166TestCase extends Test
protected void runTest() throws Throwable {
for (int i = 0; i < runsPerTest; i++) {
+ // currentRun = i;
if (profileTests)
runTestProfiled();
else
@@ -246,6 +356,34 @@ public class JSR166TestCase extends Test
main(suite(), args);
}
+ static class PithyResultPrinter extends junit.textui.ResultPrinter {
+ PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
+ long runTime;
+ public void startTest(Test test) {}
+ protected void printHeader(long runTime) {
+ this.runTime = runTime; // defer printing for later
+ }
+ protected void printFooter(TestResult result) {
+ if (result.wasSuccessful()) {
+ getWriter().println("OK (" + result.runCount() + " tests)"
+ + " Time: " + elapsedTimeAsString(runTime));
+ } else {
+ getWriter().println("Time: " + elapsedTimeAsString(runTime));
+ super.printFooter(result);
+ }
+ }
+ }
+
+ /**
+ * Returns a TestRunner that doesn't bother with unnecessary
+ * fluff, like printing a "." for each test case.
+ */
+ static junit.textui.TestRunner newPithyTestRunner() {
+ junit.textui.TestRunner runner = new junit.textui.TestRunner();
+ runner.setPrinter(new PithyResultPrinter(System.out));
+ return runner;
+ }
+
/**
* Runs all unit tests in the given test suite.
* Actual behavior influenced by jsr166.* system properties.
@@ -257,7 +395,7 @@ public class JSR166TestCase extends Test
System.setSecurityManager(new SecurityManager());
}
for (int i = 0; i < suiteRuns; i++) {
- TestResult result = junit.textui.TestRunner.run(suite);
+ TestResult result = newPithyTestRunner().doRun(suite);
if (!result.wasSuccessful())
System.exit(1);
System.gc();
@@ -283,11 +421,10 @@ public class JSR166TestCase extends Test
for (String testClassName : testClassNames) {
try {
Class> testClass = Class.forName(testClassName);
- Method m = testClass.getDeclaredMethod("suite",
- new Class>[0]);
+ Method m = testClass.getDeclaredMethod("suite");
suite.addTest(newTestSuite((Test)m.invoke(null)));
- } catch (Exception e) {
- throw new Error("Missing test class", e);
+ } catch (ReflectiveOperationException e) {
+ throw new AssertionError("Missing test class", e);
}
}
}
@@ -309,18 +446,12 @@ public class JSR166TestCase extends Test
}
}
- public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
- public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
- public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
- public static boolean atLeastJava9() {
- return JAVA_CLASS_VERSION >= 53.0
- // As of 2015-09, java9 still uses 52.0 class file version
- || JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
- }
- public static boolean atLeastJava10() {
- return JAVA_CLASS_VERSION >= 54.0
- || JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
- }
+ public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
+ public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
+ public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
+ public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
+ public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
+ public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
/**
* Collects all JSR166 unit tests as one suite.
@@ -341,6 +472,7 @@ public class JSR166TestCase extends Test
AbstractQueuedLongSynchronizerTest.suite(),
ArrayBlockingQueueTest.suite(),
ArrayDequeTest.suite(),
+ ArrayListTest.suite(),
AtomicBooleanTest.suite(),
AtomicIntegerArrayTest.suite(),
AtomicIntegerFieldUpdaterTest.suite(),
@@ -363,6 +495,7 @@ public class JSR166TestCase extends Test
CopyOnWriteArrayListTest.suite(),
CopyOnWriteArraySetTest.suite(),
CountDownLatchTest.suite(),
+ CountedCompleterTest.suite(),
CyclicBarrierTest.suite(),
DelayQueueTest.suite(),
EntryTest.suite(),
@@ -391,25 +524,31 @@ public class JSR166TestCase extends Test
TreeMapTest.suite(),
TreeSetTest.suite(),
TreeSubMapTest.suite(),
- TreeSubSetTest.suite());
+ TreeSubSetTest.suite(),
+ VectorTest.suite());
// Java8+ test classes
if (atLeastJava8()) {
String[] java8TestClassNames = {
+ "ArrayDeque8Test",
"Atomic8Test",
"CompletableFutureTest",
"ConcurrentHashMap8Test",
- "CountedCompleterTest",
+ "CountedCompleter8Test",
"DoubleAccumulatorTest",
"DoubleAdderTest",
"ForkJoinPool8Test",
"ForkJoinTask8Test",
+ "HashMapTest",
+ "LinkedBlockingDeque8Test",
+ "LinkedBlockingQueue8Test",
"LongAccumulatorTest",
"LongAdderTest",
"SplittableRandomTest",
"StampedLockTest",
"SubmissionPublisherTest",
"ThreadLocalRandom8Test",
+ "TimeUnit8Test",
};
addNamedTestClasses(suite, java8TestClassNames);
}
@@ -417,7 +556,15 @@ public class JSR166TestCase extends Test
// Java9+ test classes
if (atLeastJava9()) {
String[] java9TestClassNames = {
- // Currently empty, but expecting varhandle tests
+ "AtomicBoolean9Test",
+ "AtomicInteger9Test",
+ "AtomicIntegerArray9Test",
+ "AtomicLong9Test",
+ "AtomicLongArray9Test",
+ "AtomicReference9Test",
+ "AtomicReferenceArray9Test",
+ "ExecutorCompletionService9Test",
+ "ForkJoinPool9Test",
};
addNamedTestClasses(suite, java9TestClassNames);
}
@@ -428,7 +575,7 @@ public class JSR166TestCase extends Test
/** Returns list of junit-style test method names in given class. */
public static ArrayList testMethodNames(Class> testClass) {
Method[] methods = testClass.getDeclaredMethods();
- ArrayList names = new ArrayList(methods.length);
+ ArrayList names = new ArrayList<>(methods.length);
for (Method method : methods) {
if (method.getName().startsWith("test")
&& Modifier.isPublic(method.getModifiers())
@@ -455,8 +602,8 @@ public class JSR166TestCase extends Test
for (String methodName : testMethodNames(testClass))
suite.addTest((Test) c.newInstance(data, methodName));
return suite;
- } catch (Exception e) {
- throw new Error(e);
+ } catch (ReflectiveOperationException e) {
+ throw new AssertionError(e);
}
}
@@ -472,14 +619,14 @@ public class JSR166TestCase extends Test
if (atLeastJava8()) {
String name = testClass.getName();
String name8 = name.replaceAll("Test$", "8Test");
- if (name.equals(name8)) throw new Error(name);
+ if (name.equals(name8)) throw new AssertionError(name);
try {
return (Test)
Class.forName(name8)
- .getMethod("testSuite", new Class[] { dataClass })
+ .getMethod("testSuite", dataClass)
.invoke(null, data);
- } catch (Exception e) {
- throw new Error(e);
+ } catch (ReflectiveOperationException e) {
+ throw new AssertionError(e);
}
} else {
return new TestSuite();
@@ -493,12 +640,41 @@ public class JSR166TestCase extends Test
public static long MEDIUM_DELAY_MS;
public static long LONG_DELAY_MS;
+ private static final long RANDOM_TIMEOUT;
+ private static final long RANDOM_EXPIRED_TIMEOUT;
+ private static final TimeUnit RANDOM_TIMEUNIT;
+ static {
+ ThreadLocalRandom rnd = ThreadLocalRandom.current();
+ long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
+ RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
+ RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
+ TimeUnit[] timeUnits = TimeUnit.values();
+ RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
+ }
+
+ /**
+ * Returns a timeout for use when any value at all will do.
+ */
+ static long randomTimeout() { return RANDOM_TIMEOUT; }
+
+ /**
+ * Returns a timeout that means "no waiting", i.e. not positive.
+ */
+ static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
+
+ /**
+ * Returns a random non-null TimeUnit.
+ */
+ static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
+
/**
- * Returns the shortest timed delay. This could
- * be reimplemented to use for example a Property.
+ * Returns the shortest timed delay. This can be scaled up for
+ * slow machines using the jsr166.delay.factor system property,
+ * or via jtreg's -timeoutFactor: flag.
+ * http://openjdk.java.net/jtreg/command-help.html
*/
protected long getShortDelay() {
- return 50;
+ return (long) (50 * delayFactor);
}
/**
@@ -511,12 +687,17 @@ public class JSR166TestCase extends Test
LONG_DELAY_MS = SHORT_DELAY_MS * 200;
}
+ private static final long TIMEOUT_DELAY_MS
+ = (long) (12.0 * Math.cbrt(delayFactor));
+
/**
- * Returns a timeout in milliseconds to be used in tests that
- * verify that operations block or time out.
+ * Returns a timeout in milliseconds to be used in tests that verify
+ * that operations block or time out. We want this to be longer
+ * than the OS scheduling quantum, but not too long, so don't scale
+ * linearly with delayFactor; we use "crazy" cube root instead.
*/
- long timeoutMillis() {
- return SHORT_DELAY_MS / 4;
+ static long timeoutMillis() {
+ return TIMEOUT_DELAY_MS;
}
/**
@@ -532,7 +713,7 @@ public class JSR166TestCase extends Test
* The first exception encountered if any threadAssertXXX method fails.
*/
private final AtomicReference threadFailure
- = new AtomicReference(null);
+ = new AtomicReference<>(null);
/**
* Records an exception so that it can be rethrown later in the test
@@ -554,7 +735,7 @@ public class JSR166TestCase extends Test
String msg = toString() + ": " + String.format(format, args);
System.err.println(msg);
dumpTestThreads();
- throw new AssertionFailedError(msg);
+ throw new AssertionError(msg);
}
/**
@@ -575,12 +756,8 @@ public class JSR166TestCase extends Test
throw (RuntimeException) t;
else if (t instanceof Exception)
throw (Exception) t;
- else {
- AssertionFailedError afe =
- new AssertionFailedError(t.toString());
- afe.initCause(t);
- throw afe;
- }
+ else
+ throw new AssertionError(t.toString(), t);
}
if (Thread.interrupted())
@@ -590,7 +767,7 @@ public class JSR166TestCase extends Test
}
/**
- * Finds missing try { ... } finally { joinPool(e); }
+ * Finds missing PoolCleaners
*/
void checkForkJoinPoolThreadLeaks() throws InterruptedException {
Thread[] survivors = new Thread[7];
@@ -614,83 +791,83 @@ public class JSR166TestCase extends Test
/**
* Just like fail(reason), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadFail(String reason) {
try {
fail(reason);
- } catch (AssertionFailedError t) {
- threadRecordFailure(t);
- throw t;
+ } catch (AssertionError fail) {
+ threadRecordFailure(fail);
+ throw fail;
}
}
/**
* Just like assertTrue(b), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadAssertTrue(boolean b) {
try {
assertTrue(b);
- } catch (AssertionFailedError t) {
- threadRecordFailure(t);
- throw t;
+ } catch (AssertionError fail) {
+ threadRecordFailure(fail);
+ throw fail;
}
}
/**
* Just like assertFalse(b), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadAssertFalse(boolean b) {
try {
assertFalse(b);
- } catch (AssertionFailedError t) {
- threadRecordFailure(t);
- throw t;
+ } catch (AssertionError fail) {
+ threadRecordFailure(fail);
+ throw fail;
}
}
/**
* Just like assertNull(x), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadAssertNull(Object x) {
try {
assertNull(x);
- } catch (AssertionFailedError t) {
- threadRecordFailure(t);
- throw t;
+ } catch (AssertionError fail) {
+ threadRecordFailure(fail);
+ throw fail;
}
}
/**
* Just like assertEquals(x, y), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadAssertEquals(long x, long y) {
try {
assertEquals(x, y);
- } catch (AssertionFailedError t) {
- threadRecordFailure(t);
- throw t;
+ } catch (AssertionError fail) {
+ threadRecordFailure(fail);
+ throw fail;
}
}
/**
* Just like assertEquals(x, y), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadAssertEquals(Object x, Object y) {
try {
assertEquals(x, y);
- } catch (AssertionFailedError fail) {
+ } catch (AssertionError fail) {
threadRecordFailure(fail);
throw fail;
} catch (Throwable fail) {
@@ -700,13 +877,13 @@ public class JSR166TestCase extends Test
/**
* Just like assertSame(x, y), but additionally recording (using
- * threadRecordFailure) any AssertionFailedError thrown, so that
- * the current testcase will fail.
+ * threadRecordFailure) any AssertionError thrown, so that the
+ * current testcase will fail.
*/
public void threadAssertSame(Object x, Object y) {
try {
assertSame(x, y);
- } catch (AssertionFailedError fail) {
+ } catch (AssertionError fail) {
threadRecordFailure(fail);
throw fail;
}
@@ -728,8 +905,8 @@ public class JSR166TestCase extends Test
/**
* Records the given exception using {@link #threadRecordFailure},
- * then rethrows the exception, wrapping it in an
- * AssertionFailedError if necessary.
+ * then rethrows the exception, wrapping it in an AssertionError
+ * if necessary.
*/
public void threadUnexpectedException(Throwable t) {
threadRecordFailure(t);
@@ -738,33 +915,27 @@ public class JSR166TestCase extends Test
throw (RuntimeException) t;
else if (t instanceof Error)
throw (Error) t;
- else {
- AssertionFailedError afe =
- new AssertionFailedError("unexpected exception: " + t);
- afe.initCause(t);
- throw afe;
- }
+ else
+ throw new AssertionError("unexpected exception: " + t, t);
}
/**
* Delays, via Thread.sleep, for the given millisecond delay, but
* if the sleep is shorter than specified, may re-sleep or yield
- * until time elapses.
+ * until time elapses. Ensures that the given time, as measured
+ * by System.nanoTime(), has elapsed.
*/
static void delay(long millis) throws InterruptedException {
- long startTime = System.nanoTime();
- long ns = millis * 1000 * 1000;
- for (;;) {
+ long nanos = millis * (1000 * 1000);
+ final long wakeupTime = System.nanoTime() + nanos;
+ do {
if (millis > 0L)
Thread.sleep(millis);
else // too short to sleep
Thread.yield();
- long d = ns - (System.nanoTime() - startTime);
- if (d > 0L)
- millis = d / (1000 * 1000);
- else
- break;
- }
+ nanos = wakeupTime - System.nanoTime();
+ millis = nanos / (1000 * 1000);
+ } while (nanos >= 0L);
}
/**
@@ -776,10 +947,51 @@ public class JSR166TestCase extends Test
public void close() { joinPool(pool); }
}
+ /**
+ * An extension of PoolCleaner that has an action to release the pool.
+ */
+ class PoolCleanerWithReleaser extends PoolCleaner {
+ private final Runnable releaser;
+ public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
+ super(pool);
+ this.releaser = releaser;
+ }
+ public void close() {
+ try {
+ releaser.run();
+ } finally {
+ super.close();
+ }
+ }
+ }
+
PoolCleaner cleaner(ExecutorService pool) {
return new PoolCleaner(pool);
}
+ PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
+ return new PoolCleanerWithReleaser(pool, releaser);
+ }
+
+ PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
+ return new PoolCleanerWithReleaser(pool, releaser(latch));
+ }
+
+ Runnable releaser(final CountDownLatch latch) {
+ return new Runnable() { public void run() {
+ do { latch.countDown(); }
+ while (latch.getCount() > 0);
+ }};
+ }
+
+ PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
+ return new PoolCleanerWithReleaser(pool, releaser(flag));
+ }
+
+ Runnable releaser(final AtomicBoolean flag) {
+ return new Runnable() { public void run() { flag.set(true); }};
+ }
+
/**
* Waits out termination of a thread pool or fails doing so.
*/
@@ -793,7 +1005,7 @@ public class JSR166TestCase extends Test
} finally {
// last resort, for the benefit of subsequent tests
pool.shutdownNow();
- pool.awaitTermination(SMALL_DELAY_MS, MILLISECONDS);
+ pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
}
}
} catch (SecurityException ok) {
@@ -803,7 +1015,11 @@ public class JSR166TestCase extends Test
}
}
- /** Like Runnable, but with the freedom to throw anything */
+ /**
+ * Like Runnable, but with the freedom to throw anything.
+ * junit folks had the same idea:
+ * http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
+ */
interface Action { public void run() throws Throwable; }
/**
@@ -834,66 +1050,57 @@ public class JSR166TestCase extends Test
* Uninteresting threads are filtered out.
*/
static void dumpTestThreads() {
+ SecurityManager sm = System.getSecurityManager();
+ if (sm != null) {
+ try {
+ System.setSecurityManager(null);
+ } catch (SecurityException giveUp) {
+ return;
+ }
+ }
+
ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
System.err.println("------ stacktrace dump start ------");
for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
- String name = info.getThreadName();
+ final String name = info.getThreadName();
+ String lockName;
if ("Signal Dispatcher".equals(name))
continue;
if ("Reference Handler".equals(name)
- && info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
+ && (lockName = info.getLockName()) != null
+ && lockName.startsWith("java.lang.ref.Reference$Lock"))
continue;
if ("Finalizer".equals(name)
- && info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
+ && (lockName = info.getLockName()) != null
+ && lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
continue;
if ("checkForWedgedTest".equals(name))
continue;
System.err.print(info);
}
System.err.println("------ stacktrace dump end ------");
- }
-
- /**
- * Checks that thread does not terminate within the default
- * millisecond delay of {@code timeoutMillis()}.
- */
- void assertThreadStaysAlive(Thread thread) {
- assertThreadStaysAlive(thread, timeoutMillis());
- }
-
- /**
- * Checks that thread does not terminate within the given millisecond delay.
- */
- void assertThreadStaysAlive(Thread thread, long millis) {
- try {
- // No need to optimize the failing case via Thread.join.
- delay(millis);
- assertTrue(thread.isAlive());
- } catch (InterruptedException fail) {
- threadFail("Unexpected InterruptedException");
- }
- }
- /**
- * Checks that the threads do not terminate within the default
- * millisecond delay of {@code timeoutMillis()}.
- */
- void assertThreadsStayAlive(Thread... threads) {
- assertThreadsStayAlive(timeoutMillis(), threads);
+ if (sm != null) System.setSecurityManager(sm);
}
/**
- * Checks that the threads do not terminate within the given millisecond delay.
+ * Checks that thread eventually enters the expected blocked thread state.
*/
- void assertThreadsStayAlive(long millis, Thread... threads) {
- try {
- // No need to optimize the failing case via Thread.join.
- delay(millis);
- for (Thread thread : threads)
- assertTrue(thread.isAlive());
- } catch (InterruptedException fail) {
- threadFail("Unexpected InterruptedException");
+ void assertThreadBlocks(Thread thread, Thread.State expected) {
+ // always sleep at least 1 ms, with high probability avoiding
+ // transitory states
+ for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
+ try { delay(1); }
+ catch (InterruptedException fail) {
+ throw new AssertionError("Unexpected InterruptedException", fail);
+ }
+ Thread.State s = thread.getState();
+ if (s == expected)
+ return;
+ else if (s == Thread.State.TERMINATED)
+ fail("Unexpected thread termination");
}
+ fail("timed out waiting for thread to enter thread state " + expected);
}
/**
@@ -934,6 +1141,12 @@ public class JSR166TestCase extends Test
}
/**
+ * The maximum number of consecutive spurious wakeups we should
+ * tolerate (from APIs like LockSupport.park) before failing a test.
+ */
+ static final int MAX_SPURIOUS_WAKEUPS = 10;
+
+ /**
* The number of elements to place in collections, arrays, etc.
*/
public static final int SIZE = 20;
@@ -1037,7 +1250,7 @@ public class JSR166TestCase extends Test
}
public void refresh() {}
public String toString() {
- List ps = new ArrayList();
+ List ps = new ArrayList<>();
for (Enumeration e = perms.elements(); e.hasMoreElements();)
ps.add(e.nextElement());
return "AdjustablePolicy with permissions " + ps;
@@ -1065,16 +1278,13 @@ public class JSR166TestCase extends Test
/**
* Sleeps until the given time has elapsed.
- * Throws AssertionFailedError if interrupted.
+ * Throws AssertionError if interrupted.
*/
- void sleep(long millis) {
+ static void sleep(long millis) {
try {
delay(millis);
} catch (InterruptedException fail) {
- AssertionFailedError afe =
- new AssertionFailedError("Unexpected InterruptedException");
- afe.initCause(fail);
- throw afe;
+ throw new AssertionError("Unexpected InterruptedException", fail);
}
}
@@ -1083,7 +1293,7 @@ public class JSR166TestCase extends Test
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
*/
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
- long startTime = System.nanoTime();
+ long startTime = 0L;
for (;;) {
Thread.State s = thread.getState();
if (s == Thread.State.BLOCKED ||
@@ -1092,23 +1302,65 @@ public class JSR166TestCase extends Test
return;
else if (s == Thread.State.TERMINATED)
fail("Unexpected thread termination");
+ else if (startTime == 0L)
+ startTime = System.nanoTime();
else if (millisElapsedSince(startTime) > timeoutMillis) {
threadAssertTrue(thread.isAlive());
- return;
+ fail("timed out waiting for thread to enter wait state");
+ }
+ Thread.yield();
+ }
+ }
+
+ /**
+ * Spin-waits up to the specified number of milliseconds for the given
+ * thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
+ * and additionally satisfy the given condition.
+ */
+ void waitForThreadToEnterWaitState(
+ Thread thread, long timeoutMillis, Callable waitingForGodot) {
+ long startTime = 0L;
+ for (;;) {
+ Thread.State s = thread.getState();
+ if (s == Thread.State.BLOCKED ||
+ s == Thread.State.WAITING ||
+ s == Thread.State.TIMED_WAITING) {
+ try {
+ if (waitingForGodot.call())
+ return;
+ } catch (Throwable fail) { threadUnexpectedException(fail); }
+ }
+ else if (s == Thread.State.TERMINATED)
+ fail("Unexpected thread termination");
+ else if (startTime == 0L)
+ startTime = System.nanoTime();
+ else if (millisElapsedSince(startTime) > timeoutMillis) {
+ threadAssertTrue(thread.isAlive());
+ fail("timed out waiting for thread to enter wait state");
}
Thread.yield();
}
}
/**
- * Waits up to LONG_DELAY_MS for the given thread to enter a wait
- * state: BLOCKED, WAITING, or TIMED_WAITING.
+ * Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
+ * enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
*/
void waitForThreadToEnterWaitState(Thread thread) {
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
}
/**
+ * Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
+ * enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
+ * and additionally satisfy the given condition.
+ */
+ void waitForThreadToEnterWaitState(
+ Thread thread, Callable waitingForGodot) {
+ waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
+ }
+
+ /**
* Returns the number of milliseconds since time given by
* startNanoTime, which must have been previously returned from a
* call to {@link System#nanoTime()}.
@@ -1123,7 +1375,7 @@ public class JSR166TestCase extends Test
// r.run();
// } catch (Throwable fail) { threadUnexpectedException(fail); }
// if (millisElapsedSince(startTime) > timeoutMillis/2)
-// throw new AssertionFailedError("did not return promptly");
+// throw new AssertionError("did not return promptly");
// }
// void assertTerminatesPromptly(Runnable r) {
@@ -1136,11 +1388,13 @@ public class JSR166TestCase extends Test
*/
void checkTimedGet(Future f, T expectedValue, long timeoutMillis) {
long startTime = System.nanoTime();
+ T actual = null;
try {
- assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
+ actual = f.get(timeoutMillis, MILLISECONDS);
} catch (Throwable fail) { threadUnexpectedException(fail); }
+ assertEquals(expectedValue, actual);
if (millisElapsedSince(startTime) > timeoutMillis/2)
- throw new AssertionFailedError("timed get did not return promptly");
+ throw new AssertionError("timed get did not return promptly");
}
void checkTimedGet(Future f, T expectedValue) {
@@ -1170,7 +1424,7 @@ public class JSR166TestCase extends Test
} finally {
if (t.getState() != Thread.State.TERMINATED) {
t.interrupt();
- fail("Test timed out");
+ threadFail("timed out waiting for thread to terminate");
}
}
}
@@ -1198,26 +1452,6 @@ public class JSR166TestCase extends Test
}
}
- public abstract class RunnableShouldThrow implements Runnable {
- protected abstract void realRun() throws Throwable;
-
- final Class> exceptionClass;
-
- RunnableShouldThrow(Class exceptionClass) {
- this.exceptionClass = exceptionClass;
- }
-
- public final void run() {
- try {
- realRun();
- threadShouldThrow(exceptionClass.getSimpleName());
- } catch (Throwable t) {
- if (! exceptionClass.isInstance(t))
- threadUnexpectedException(t);
- }
- }
- }
-
public abstract class ThreadShouldThrow extends Thread {
protected abstract void realRun() throws Throwable;
@@ -1336,17 +1570,37 @@ public class JSR166TestCase extends Test
return new LatchAwaiter(latch);
}
- public void await(CountDownLatch latch) {
+ public void await(CountDownLatch latch, long timeoutMillis) {
+ boolean timedOut = false;
try {
- assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
+ timedOut = !latch.await(timeoutMillis, MILLISECONDS);
} catch (Throwable fail) {
threadUnexpectedException(fail);
}
+ if (timedOut)
+ fail("timed out waiting for CountDownLatch for "
+ + (timeoutMillis/1000) + " sec");
+ }
+
+ public void await(CountDownLatch latch) {
+ await(latch, LONG_DELAY_MS);
}
public void await(Semaphore semaphore) {
+ boolean timedOut = false;
+ try {
+ timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
+ } catch (Throwable fail) {
+ threadUnexpectedException(fail);
+ }
+ if (timedOut)
+ fail("timed out waiting for Semaphore for "
+ + (LONG_DELAY_MS/1000) + " sec");
+ }
+
+ public void await(CyclicBarrier barrier) {
try {
- assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
+ barrier.await(LONG_DELAY_MS, MILLISECONDS);
} catch (Throwable fail) {
threadUnexpectedException(fail);
}
@@ -1366,7 +1620,7 @@ public class JSR166TestCase extends Test
// long startTime = System.nanoTime();
// while (!flag.get()) {
// if (millisElapsedSince(startTime) > timeoutMillis)
-// throw new AssertionFailedError("timed out");
+// throw new AssertionError("timed out");
// Thread.yield();
// }
// }
@@ -1375,28 +1629,6 @@ public class JSR166TestCase extends Test
public String call() { throw new NullPointerException(); }
}
- public static class CallableOne implements Callable {
- public Integer call() { return one; }
- }
-
- public class ShortRunnable extends CheckedRunnable {
- protected void realRun() throws Throwable {
- delay(SHORT_DELAY_MS);
- }
- }
-
- public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
- protected void realRun() throws InterruptedException {
- delay(SHORT_DELAY_MS);
- }
- }
-
- public class SmallRunnable extends CheckedRunnable {
- protected void realRun() throws Throwable {
- delay(SMALL_DELAY_MS);
- }
- }
-
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
protected void realRun() {
try {
@@ -1405,25 +1637,6 @@ public class JSR166TestCase extends Test
}
}
- public class SmallCallable extends CheckedCallable {
- protected Object realCall() throws InterruptedException {
- delay(SMALL_DELAY_MS);
- return Boolean.TRUE;
- }
- }
-
- public class MediumRunnable extends CheckedRunnable {
- protected void realRun() throws Throwable {
- delay(MEDIUM_DELAY_MS);
- }
- }
-
- public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
- protected void realRun() throws InterruptedException {
- delay(MEDIUM_DELAY_MS);
- }
- }
-
public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
return new CheckedRunnable() {
protected void realRun() {
@@ -1433,22 +1646,6 @@ public class JSR166TestCase extends Test
}};
}
- public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
- protected void realRun() {
- try {
- delay(MEDIUM_DELAY_MS);
- } catch (InterruptedException ok) {}
- }
- }
-
- public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
- protected void realRun() {
- try {
- delay(LONG_DELAY_MS);
- } catch (InterruptedException ok) {}
- }
- }
-
/**
* For use as ThreadFactory in constructors
*/
@@ -1462,59 +1659,6 @@ public class JSR166TestCase extends Test
boolean isDone();
}
- public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
- return new TrackedRunnable() {
- private volatile boolean done = false;
- public boolean isDone() { return done; }
- public void run() {
- try {
- delay(timeoutMillis);
- done = true;
- } catch (InterruptedException ok) {}
- }
- };
- }
-
- public static class TrackedShortRunnable implements Runnable {
- public volatile boolean done = false;
- public void run() {
- try {
- delay(SHORT_DELAY_MS);
- done = true;
- } catch (InterruptedException ok) {}
- }
- }
-
- public static class TrackedSmallRunnable implements Runnable {
- public volatile boolean done = false;
- public void run() {
- try {
- delay(SMALL_DELAY_MS);
- done = true;
- } catch (InterruptedException ok) {}
- }
- }
-
- public static class TrackedMediumRunnable implements Runnable {
- public volatile boolean done = false;
- public void run() {
- try {
- delay(MEDIUM_DELAY_MS);
- done = true;
- } catch (InterruptedException ok) {}
- }
- }
-
- public static class TrackedLongRunnable implements Runnable {
- public volatile boolean done = false;
- public void run() {
- try {
- delay(LONG_DELAY_MS);
- done = true;
- } catch (InterruptedException ok) {}
- }
- }
-
public static class TrackedNoOpRunnable implements Runnable {
public volatile boolean done = false;
public void run() {
@@ -1522,17 +1666,6 @@ public class JSR166TestCase extends Test
}
}
- public static class TrackedCallable implements Callable {
- public volatile boolean done = false;
- public Object call() {
- try {
- delay(SMALL_DELAY_MS);
- done = true;
- } catch (InterruptedException ok) {}
- return Boolean.TRUE;
- }
- }
-
/**
* Analog of CheckedRunnable for RecursiveAction
*/
@@ -1574,21 +1707,18 @@ public class JSR166TestCase extends Test
/**
* A CyclicBarrier that uses timed await and fails with
- * AssertionFailedErrors instead of throwing checked exceptions.
+ * AssertionErrors instead of throwing checked exceptions.
*/
- public class CheckedBarrier extends CyclicBarrier {
+ public static class CheckedBarrier extends CyclicBarrier {
public CheckedBarrier(int parties) { super(parties); }
public int await() {
try {
return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
} catch (TimeoutException timedOut) {
- throw new AssertionFailedError("timed out");
+ throw new AssertionError("timed out");
} catch (Exception fail) {
- AssertionFailedError afe =
- new AssertionFailedError("Unexpected exception: " + fail);
- afe.initCause(fail);
- throw afe;
+ throw new AssertionError("Unexpected exception: " + fail, fail);
}
}
}
@@ -1599,7 +1729,7 @@ public class JSR166TestCase extends Test
assertEquals(0, q.size());
assertNull(q.peek());
assertNull(q.poll());
- assertNull(q.poll(0, MILLISECONDS));
+ assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
assertEquals(q.toString(), "[]");
assertTrue(Arrays.equals(q.toArray(), new Object[0]));
assertFalse(q.iterator().hasNext());
@@ -1640,18 +1770,68 @@ public class JSR166TestCase extends Test
}
}
+ void assertImmutable(final Object o) {
+ if (o instanceof Collection) {
+ assertThrows(
+ UnsupportedOperationException.class,
+ new Runnable() { public void run() {
+ ((Collection) o).add(null);}});
+ }
+ }
+
@SuppressWarnings("unchecked")
T serialClone(T o) {
+ T clone = null;
try {
ObjectInputStream ois = new ObjectInputStream
(new ByteArrayInputStream(serialBytes(o)));
- T clone = (T) ois.readObject();
- assertSame(o.getClass(), clone.getClass());
- return clone;
+ clone = (T) ois.readObject();
} catch (Throwable fail) {
threadUnexpectedException(fail);
+ }
+ if (o == clone) assertImmutable(o);
+ else assertSame(o.getClass(), clone.getClass());
+ return clone;
+ }
+
+ /**
+ * A version of serialClone that leaves error handling (for
+ * e.g. NotSerializableException) up to the caller.
+ */
+ @SuppressWarnings("unchecked")
+ T serialClonePossiblyFailing(T o)
+ throws ReflectiveOperationException, java.io.IOException {
+ ByteArrayOutputStream bos = new ByteArrayOutputStream();
+ ObjectOutputStream oos = new ObjectOutputStream(bos);
+ oos.writeObject(o);
+ oos.flush();
+ oos.close();
+ ObjectInputStream ois = new ObjectInputStream
+ (new ByteArrayInputStream(bos.toByteArray()));
+ T clone = (T) ois.readObject();
+ if (o == clone) assertImmutable(o);
+ else assertSame(o.getClass(), clone.getClass());
+ return clone;
+ }
+
+ /**
+ * If o implements Cloneable and has a public clone method,
+ * returns a clone of o, else null.
+ */
+ @SuppressWarnings("unchecked")
+ T cloneableClone(T o) {
+ if (!(o instanceof Cloneable)) return null;
+ final T clone;
+ try {
+ clone = (T) o.getClass().getMethod("clone").invoke(o);
+ } catch (NoSuchMethodException ok) {
return null;
+ } catch (ReflectiveOperationException unexpected) {
+ throw new Error(unexpected);
}
+ assertNotSame(o, clone); // not 100% guaranteed by spec
+ assertSame(o.getClass(), clone.getClass());
+ return clone;
}
public void assertThrows(Class extends Throwable> expectedExceptionClass,
@@ -1661,14 +1841,11 @@ public class JSR166TestCase extends Test
try { throwingAction.run(); }
catch (Throwable t) {
threw = true;
- if (!expectedExceptionClass.isInstance(t)) {
- AssertionFailedError afe =
- new AssertionFailedError
- ("Expected " + expectedExceptionClass.getName() +
- ", got " + t.getClass().getName());
- afe.initCause(t);
- threadUnexpectedException(afe);
- }
+ if (!expectedExceptionClass.isInstance(t))
+ throw new AssertionError(
+ "Expected " + expectedExceptionClass.getName() +
+ ", got " + t.getClass().getName(),
+ t);
}
if (!threw)
shouldThrow(expectedExceptionClass.getName());
@@ -1682,4 +1859,244 @@ public class JSR166TestCase extends Test
} catch (NoSuchElementException success) {}
assertFalse(it.hasNext());
}
+
+ public Callable callableThrowing(final Exception ex) {
+ return new Callable() { public T call() throws Exception { throw ex; }};
+ }
+
+ public Runnable runnableThrowing(final RuntimeException ex) {
+ return new Runnable() { public void run() { throw ex; }};
+ }
+
+ /** A reusable thread pool to be shared by tests. */
+ static final ExecutorService cachedThreadPool =
+ new ThreadPoolExecutor(0, Integer.MAX_VALUE,
+ 1000L, MILLISECONDS,
+ new SynchronousQueue());
+
+ static void shuffle(T[] array) {
+ Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
+ }
+
+ /**
+ * Returns the same String as would be returned by {@link
+ * Object#toString}, whether or not the given object's class
+ * overrides toString().
+ *
+ * @see System#identityHashCode
+ */
+ static String identityString(Object x) {
+ return x.getClass().getName()
+ + "@" + Integer.toHexString(System.identityHashCode(x));
+ }
+
+ // --- Shared assertions for Executor tests ---
+
+ /**
+ * Returns maximum number of tasks that can be submitted to given
+ * pool (with bounded queue) before saturation (when submission
+ * throws RejectedExecutionException).
+ */
+ static final int saturatedSize(ThreadPoolExecutor pool) {
+ BlockingQueue q = pool.getQueue();
+ return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
+ }
+
+ @SuppressWarnings("FutureReturnValueIgnored")
+ void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
+ try {
+ e.execute((Runnable) null);
+ shouldThrow();
+ } catch (NullPointerException success) {}
+
+ if (! (e instanceof ExecutorService)) return;
+ ExecutorService es = (ExecutorService) e;
+ try {
+ es.submit((Runnable) null);
+ shouldThrow();
+ } catch (NullPointerException success) {}
+ try {
+ es.submit((Runnable) null, Boolean.TRUE);
+ shouldThrow();
+ } catch (NullPointerException success) {}
+ try {
+ es.submit((Callable) null);
+ shouldThrow();
+ } catch (NullPointerException success) {}
+
+ if (! (e instanceof ScheduledExecutorService)) return;
+ ScheduledExecutorService ses = (ScheduledExecutorService) e;
+ try {
+ ses.schedule((Runnable) null,
+ randomTimeout(), randomTimeUnit());
+ shouldThrow();
+ } catch (NullPointerException success) {}
+ try {
+ ses.schedule((Callable) null,
+ randomTimeout(), randomTimeUnit());
+ shouldThrow();
+ } catch (NullPointerException success) {}
+ try {
+ ses.scheduleAtFixedRate((Runnable) null,
+ randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
+ shouldThrow();
+ } catch (NullPointerException success) {}
+ try {
+ ses.scheduleWithFixedDelay((Runnable) null,
+ randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
+ shouldThrow();
+ } catch (NullPointerException success) {}
+ }
+
+ void setRejectedExecutionHandler(
+ ThreadPoolExecutor p, RejectedExecutionHandler handler) {
+ p.setRejectedExecutionHandler(handler);
+ assertSame(handler, p.getRejectedExecutionHandler());
+ }
+
+ void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
+ final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
+ final long savedTaskCount = p.getTaskCount();
+ final long savedCompletedTaskCount = p.getCompletedTaskCount();
+ final int savedQueueSize = p.getQueue().size();
+ final boolean stock = (p.getClass().getClassLoader() == null);
+
+ Runnable r = () -> {};
+ Callable c = () -> Boolean.TRUE;
+
+ class Recorder implements RejectedExecutionHandler {
+ public volatile Runnable r = null;
+ public volatile ThreadPoolExecutor p = null;
+ public void reset() { r = null; p = null; }
+ public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
+ assertNull(this.r);
+ assertNull(this.p);
+ this.r = r;
+ this.p = p;
+ }
+ }
+
+ // check custom handler is invoked exactly once per task
+ Recorder recorder = new Recorder();
+ setRejectedExecutionHandler(p, recorder);
+ for (int i = 2; i--> 0; ) {
+ recorder.reset();
+ p.execute(r);
+ if (stock && p.getClass() == ThreadPoolExecutor.class)
+ assertSame(r, recorder.r);
+ assertSame(p, recorder.p);
+
+ recorder.reset();
+ assertFalse(p.submit(r).isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+
+ recorder.reset();
+ assertFalse(p.submit(r, Boolean.TRUE).isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+
+ recorder.reset();
+ assertFalse(p.submit(c).isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+
+ if (p instanceof ScheduledExecutorService) {
+ ScheduledExecutorService s = (ScheduledExecutorService) p;
+ ScheduledFuture> future;
+
+ recorder.reset();
+ future = s.schedule(r, randomTimeout(), randomTimeUnit());
+ assertFalse(future.isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+
+ recorder.reset();
+ future = s.schedule(c, randomTimeout(), randomTimeUnit());
+ assertFalse(future.isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+
+ recorder.reset();
+ future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
+ assertFalse(future.isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+
+ recorder.reset();
+ future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
+ assertFalse(future.isDone());
+ if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
+ assertSame(p, recorder.p);
+ }
+ }
+
+ // Checking our custom handler above should be sufficient, but
+ // we add some integration tests of standard handlers.
+ final AtomicReference thread = new AtomicReference<>();
+ final Runnable setThread = () -> thread.set(Thread.currentThread());
+
+ setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
+ try {
+ p.execute(setThread);
+ shouldThrow();
+ } catch (RejectedExecutionException success) {}
+ assertNull(thread.get());
+
+ setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
+ p.execute(setThread);
+ assertNull(thread.get());
+
+ setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
+ p.execute(setThread);
+ if (p.isShutdown())
+ assertNull(thread.get());
+ else
+ assertSame(Thread.currentThread(), thread.get());
+
+ setRejectedExecutionHandler(p, savedHandler);
+
+ // check that pool was not perturbed by handlers
+ assertEquals(savedTaskCount, p.getTaskCount());
+ assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
+ assertEquals(savedQueueSize, p.getQueue().size());
+ }
+
+ void assertCollectionsEquals(Collection> x, Collection> y) {
+ assertEquals(x, y);
+ assertEquals(y, x);
+ assertEquals(x.isEmpty(), y.isEmpty());
+ assertEquals(x.size(), y.size());
+ if (x instanceof List) {
+ assertEquals(x.toString(), y.toString());
+ }
+ if (x instanceof List || x instanceof Set) {
+ assertEquals(x.hashCode(), y.hashCode());
+ }
+ if (x instanceof List || x instanceof Deque) {
+ assertTrue(Arrays.equals(x.toArray(), y.toArray()));
+ assertTrue(Arrays.equals(x.toArray(new Object[0]),
+ y.toArray(new Object[0])));
+ }
+ }
+
+ /**
+ * A weaker form of assertCollectionsEquals which does not insist
+ * that the two collections satisfy Object#equals(Object), since
+ * they may use identity semantics as Deques do.
+ */
+ void assertCollectionsEquivalent(Collection> x, Collection> y) {
+ if (x instanceof List || x instanceof Set)
+ assertCollectionsEquals(x, y);
+ else {
+ assertEquals(x.isEmpty(), y.isEmpty());
+ assertEquals(x.size(), y.size());
+ assertEquals(new HashSet(x), new HashSet(y));
+ if (x instanceof Deque) {
+ assertTrue(Arrays.equals(x.toArray(), y.toArray()));
+ assertTrue(Arrays.equals(x.toArray(new Object[0]),
+ y.toArray(new Object[0])));
+ }
+ }
+ }
}