1 |
/* |
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* Written by Doug Lea with assistance from members of JCP JSR-166 |
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* Expert Group and released to the public domain, as explained at |
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* http://creativecommons.org/publicdomain/zero/1.0/ |
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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.io.ByteArrayInputStream; |
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import java.io.ByteArrayOutputStream; |
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import java.io.ObjectInputStream; |
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import java.io.ObjectOutputStream; |
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import java.lang.management.ManagementFactory; |
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import java.lang.management.ThreadInfo; |
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import java.lang.reflect.Method; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.Date; |
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import java.util.Enumeration; |
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import java.util.List; |
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import java.util.NoSuchElementException; |
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import java.util.PropertyPermission; |
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import java.util.concurrent.*; |
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import java.util.concurrent.atomic.AtomicBoolean; |
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import java.util.concurrent.atomic.AtomicReference; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import static java.util.concurrent.TimeUnit.NANOSECONDS; |
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import java.util.regex.Pattern; |
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import java.security.CodeSource; |
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import java.security.Permission; |
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import java.security.PermissionCollection; |
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import java.security.Permissions; |
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import java.security.Policy; |
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import java.security.ProtectionDomain; |
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import java.security.SecurityPermission; |
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|
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/** |
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* Base class for JSR166 Junit TCK tests. Defines some constants, |
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* utility methods and classes, as well as a simple framework for |
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* helping to make sure that assertions failing in generated threads |
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* cause the associated test that generated them to itself fail (which |
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* JUnit does not otherwise arrange). The rules for creating such |
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* tests are: |
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* |
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* <ol> |
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* |
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* <li> All assertions in code running in generated threads must use |
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* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link |
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* #threadAssertEquals}, or {@link #threadAssertNull}, (not |
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* {@code fail}, {@code assertTrue}, etc.) It is OK (but not |
52 |
* 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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* |
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* <li> If you override {@link #setUp} or {@link #tearDown}, make sure |
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* to invoke {@code super.setUp} and {@code super.tearDown} within |
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* them. These methods are used to clear and check for thread |
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* assertion failures.</li> |
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* |
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* <li>All delays and timeouts must use one of the constants {@code |
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* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS}, |
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* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always |
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* discriminable from zero time, and always allows enough time for the |
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* small amounts of computation (creating a thread, calling a few |
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* methods, etc) needed to reach a timeout point. Similarly, a SMALL |
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* is always discriminable as larger than SHORT and smaller than |
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* MEDIUM. And so on. These constants are set to conservative values, |
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* but even so, if there is ever any doubt, they can all be increased |
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* in one spot to rerun tests on slower platforms.</li> |
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* |
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* <li> All threads generated must be joined inside each test case |
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* method (or {@code fail} to do so) before returning from the |
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* method. The {@code joinPool} method can be used to do this when |
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* using Executors.</li> |
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* |
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* </ol> |
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* |
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* <p><b>Other notes</b> |
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* <ul> |
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* |
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* <li> Usually, there is one testcase method per JSR166 method |
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* covering "normal" operation, and then as many exception-testing |
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* methods as there are exceptions the method can throw. Sometimes |
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* there are multiple tests per JSR166 method when the different |
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* "normal" behaviors differ significantly. And sometimes testcases |
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* cover multiple methods when they cannot be tested in |
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* isolation.</li> |
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* |
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* <li> The documentation style for testcases is to provide as javadoc |
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* a simple sentence or two describing the property that the testcase |
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* method purports to test. The javadocs do not say anything about how |
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* the property is tested. To find out, read the code.</li> |
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* |
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* <li> These tests are "conformance tests", and do not attempt to |
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* test throughput, latency, scalability or other performance factors |
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* (see the separate "jtreg" tests for a set intended to check these |
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* for the most central aspects of functionality.) So, most tests use |
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* the smallest sensible numbers of threads, collection sizes, etc |
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* needed to check basic conformance.</li> |
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* |
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* <li>The test classes currently do not declare inclusion in |
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* any particular package to simplify things for people integrating |
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* them in TCK test suites.</li> |
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* |
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* <li> As a convenience, the {@code main} of this class (JSR166TestCase) |
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* runs all JSR166 unit tests.</li> |
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* |
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* </ul> |
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*/ |
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public class JSR166TestCase extends TestCase { |
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private static final boolean useSecurityManager = |
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Boolean.getBoolean("jsr166.useSecurityManager"); |
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|
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protected static final boolean expensiveTests = |
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Boolean.getBoolean("jsr166.expensiveTests"); |
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|
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/** |
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* If true, report on stdout all "slow" tests, that is, ones that |
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* take more than profileThreshold milliseconds to execute. |
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*/ |
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private static final boolean profileTests = |
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Boolean.getBoolean("jsr166.profileTests"); |
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|
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/** |
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* The number of milliseconds that tests are permitted for |
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* execution without being reported, when profileTests is set. |
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*/ |
129 |
private static final long profileThreshold = |
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Long.getLong("jsr166.profileThreshold", 100); |
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|
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/** |
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* The number of repetitions per test (for tickling rare bugs). |
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*/ |
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private static final int runsPerTest = |
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Integer.getInteger("jsr166.runsPerTest", 1); |
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|
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/** |
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* A filter for tests to run, matching strings of the form |
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* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)" |
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* Usefully combined with jsr166.runsPerTest. |
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*/ |
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private static final Pattern methodFilter = methodFilter(); |
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|
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private static Pattern methodFilter() { |
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String regex = System.getProperty("jsr166.methodFilter"); |
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return (regex == null) ? null : Pattern.compile(regex); |
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} |
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|
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protected void runTest() throws Throwable { |
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if (methodFilter == null |
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|| methodFilter.matcher(toString()).find()) { |
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for (int i = 0; i < runsPerTest; i++) { |
154 |
if (profileTests) |
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runTestProfiled(); |
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else |
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super.runTest(); |
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} |
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} |
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} |
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|
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protected void runTestProfiled() throws Throwable { |
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long t0 = System.nanoTime(); |
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try { |
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super.runTest(); |
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} finally { |
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long elapsedMillis = |
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(System.nanoTime() - t0) / (1000L * 1000L); |
169 |
if (elapsedMillis >= profileThreshold) |
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System.out.printf("%n%s: %d%n", toString(), elapsedMillis); |
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} |
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} |
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|
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/** |
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* Runs all JSR166 unit tests using junit.textui.TestRunner. |
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* Optional command line arg provides the number of iterations to |
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* repeat running the tests. |
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*/ |
179 |
public static void main(String[] args) { |
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if (useSecurityManager) { |
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System.err.println("Setting a permissive security manager"); |
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Policy.setPolicy(permissivePolicy()); |
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System.setSecurityManager(new SecurityManager()); |
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} |
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int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]); |
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|
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Test s = suite(); |
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for (int i = 0; i < iters; ++i) { |
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junit.textui.TestRunner.run(s); |
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System.gc(); |
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System.runFinalization(); |
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} |
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System.exit(0); |
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} |
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|
196 |
public static TestSuite newTestSuite(Object... suiteOrClasses) { |
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TestSuite suite = new TestSuite(); |
198 |
for (Object suiteOrClass : suiteOrClasses) { |
199 |
if (suiteOrClass instanceof TestSuite) |
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suite.addTest((TestSuite) suiteOrClass); |
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else if (suiteOrClass instanceof Class) |
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suite.addTest(new TestSuite((Class<?>) suiteOrClass)); |
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else |
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throw new ClassCastException("not a test suite or class"); |
205 |
} |
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return suite; |
207 |
} |
208 |
|
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public static void addNamedTestClasses(TestSuite suite, |
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String... testClassNames) { |
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for (String testClassName : testClassNames) { |
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try { |
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Class<?> testClass = Class.forName(testClassName); |
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Method m = testClass.getDeclaredMethod("suite", |
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new Class<?>[0]); |
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suite.addTest(newTestSuite((Test)m.invoke(null))); |
217 |
} catch (Exception e) { |
218 |
throw new Error("Missing test class", e); |
219 |
} |
220 |
} |
221 |
} |
222 |
|
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public static final double JAVA_CLASS_VERSION; |
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static { |
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try { |
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JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged( |
227 |
new java.security.PrivilegedAction<Double>() { |
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public Double run() { |
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return Double.valueOf(System.getProperty("java.class.version"));}}); |
230 |
} catch (Throwable t) { |
231 |
throw new Error(t); |
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} |
233 |
} |
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|
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public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; } |
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public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; } |
237 |
public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; } |
238 |
|
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/** |
240 |
* Collects all JSR166 unit tests as one suite. |
241 |
*/ |
242 |
public static Test suite() { |
243 |
// Java7+ test classes |
244 |
TestSuite suite = newTestSuite( |
245 |
ForkJoinPoolTest.suite(), |
246 |
ForkJoinTaskTest.suite(), |
247 |
RecursiveActionTest.suite(), |
248 |
RecursiveTaskTest.suite(), |
249 |
LinkedTransferQueueTest.suite(), |
250 |
PhaserTest.suite(), |
251 |
ThreadLocalRandomTest.suite(), |
252 |
AbstractExecutorServiceTest.suite(), |
253 |
AbstractQueueTest.suite(), |
254 |
AbstractQueuedSynchronizerTest.suite(), |
255 |
AbstractQueuedLongSynchronizerTest.suite(), |
256 |
ArrayBlockingQueueTest.suite(), |
257 |
ArrayDequeTest.suite(), |
258 |
AtomicBooleanTest.suite(), |
259 |
AtomicIntegerArrayTest.suite(), |
260 |
AtomicIntegerFieldUpdaterTest.suite(), |
261 |
AtomicIntegerTest.suite(), |
262 |
AtomicLongArrayTest.suite(), |
263 |
AtomicLongFieldUpdaterTest.suite(), |
264 |
AtomicLongTest.suite(), |
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AtomicMarkableReferenceTest.suite(), |
266 |
AtomicReferenceArrayTest.suite(), |
267 |
AtomicReferenceFieldUpdaterTest.suite(), |
268 |
AtomicReferenceTest.suite(), |
269 |
AtomicStampedReferenceTest.suite(), |
270 |
ConcurrentHashMapTest.suite(), |
271 |
ConcurrentLinkedDequeTest.suite(), |
272 |
ConcurrentLinkedQueueTest.suite(), |
273 |
ConcurrentSkipListMapTest.suite(), |
274 |
ConcurrentSkipListSubMapTest.suite(), |
275 |
ConcurrentSkipListSetTest.suite(), |
276 |
ConcurrentSkipListSubSetTest.suite(), |
277 |
CopyOnWriteArrayListTest.suite(), |
278 |
CopyOnWriteArraySetTest.suite(), |
279 |
CountDownLatchTest.suite(), |
280 |
CyclicBarrierTest.suite(), |
281 |
DelayQueueTest.suite(), |
282 |
EntryTest.suite(), |
283 |
ExchangerTest.suite(), |
284 |
ExecutorsTest.suite(), |
285 |
ExecutorCompletionServiceTest.suite(), |
286 |
FutureTaskTest.suite(), |
287 |
LinkedBlockingDequeTest.suite(), |
288 |
LinkedBlockingQueueTest.suite(), |
289 |
LinkedListTest.suite(), |
290 |
LockSupportTest.suite(), |
291 |
PriorityBlockingQueueTest.suite(), |
292 |
PriorityQueueTest.suite(), |
293 |
ReentrantLockTest.suite(), |
294 |
ReentrantReadWriteLockTest.suite(), |
295 |
ScheduledExecutorTest.suite(), |
296 |
ScheduledExecutorSubclassTest.suite(), |
297 |
SemaphoreTest.suite(), |
298 |
SynchronousQueueTest.suite(), |
299 |
SystemTest.suite(), |
300 |
ThreadLocalTest.suite(), |
301 |
ThreadPoolExecutorTest.suite(), |
302 |
ThreadPoolExecutorSubclassTest.suite(), |
303 |
ThreadTest.suite(), |
304 |
TimeUnitTest.suite(), |
305 |
TreeMapTest.suite(), |
306 |
TreeSetTest.suite(), |
307 |
TreeSubMapTest.suite(), |
308 |
TreeSubSetTest.suite()); |
309 |
|
310 |
// Java8+ test classes |
311 |
if (atLeastJava8()) { |
312 |
String[] java8TestClassNames = { |
313 |
"Atomic8Test", |
314 |
"CompletableFutureTest", |
315 |
"ConcurrentHashMap8Test", |
316 |
"CountedCompleterTest", |
317 |
"DoubleAccumulatorTest", |
318 |
"DoubleAdderTest", |
319 |
"ForkJoinPool8Test", |
320 |
"ForkJoinTask8Test", |
321 |
"LongAccumulatorTest", |
322 |
"LongAdderTest", |
323 |
"SplittableRandomTest", |
324 |
"StampedLockTest", |
325 |
"ThreadLocalRandom8Test", |
326 |
}; |
327 |
addNamedTestClasses(suite, java8TestClassNames); |
328 |
} |
329 |
|
330 |
return suite; |
331 |
} |
332 |
|
333 |
// Delays for timing-dependent tests, in milliseconds. |
334 |
|
335 |
public static long SHORT_DELAY_MS; |
336 |
public static long SMALL_DELAY_MS; |
337 |
public static long MEDIUM_DELAY_MS; |
338 |
public static long LONG_DELAY_MS; |
339 |
|
340 |
/** |
341 |
* Returns the shortest timed delay. This could |
342 |
* be reimplemented to use for example a Property. |
343 |
*/ |
344 |
protected long getShortDelay() { |
345 |
return 50; |
346 |
} |
347 |
|
348 |
/** |
349 |
* Sets delays as multiples of SHORT_DELAY. |
350 |
*/ |
351 |
protected void setDelays() { |
352 |
SHORT_DELAY_MS = getShortDelay(); |
353 |
SMALL_DELAY_MS = SHORT_DELAY_MS * 5; |
354 |
MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10; |
355 |
LONG_DELAY_MS = SHORT_DELAY_MS * 200; |
356 |
} |
357 |
|
358 |
/** |
359 |
* Returns a timeout in milliseconds to be used in tests that |
360 |
* verify that operations block or time out. |
361 |
*/ |
362 |
long timeoutMillis() { |
363 |
return SHORT_DELAY_MS / 4; |
364 |
} |
365 |
|
366 |
/** |
367 |
* Returns a new Date instance representing a time delayMillis |
368 |
* milliseconds in the future. |
369 |
*/ |
370 |
Date delayedDate(long delayMillis) { |
371 |
return new Date(System.currentTimeMillis() + delayMillis); |
372 |
} |
373 |
|
374 |
/** |
375 |
* The first exception encountered if any threadAssertXXX method fails. |
376 |
*/ |
377 |
private final AtomicReference<Throwable> threadFailure |
378 |
= new AtomicReference<Throwable>(null); |
379 |
|
380 |
/** |
381 |
* Records an exception so that it can be rethrown later in the test |
382 |
* harness thread, triggering a test case failure. Only the first |
383 |
* failure is recorded; subsequent calls to this method from within |
384 |
* the same test have no effect. |
385 |
*/ |
386 |
public void threadRecordFailure(Throwable t) { |
387 |
threadFailure.compareAndSet(null, t); |
388 |
} |
389 |
|
390 |
public void setUp() { |
391 |
setDelays(); |
392 |
} |
393 |
|
394 |
/** |
395 |
* Extra checks that get done for all test cases. |
396 |
* |
397 |
* Triggers test case failure if any thread assertions have failed, |
398 |
* by rethrowing, in the test harness thread, any exception recorded |
399 |
* earlier by threadRecordFailure. |
400 |
* |
401 |
* Triggers test case failure if interrupt status is set in the main thread. |
402 |
*/ |
403 |
public void tearDown() throws Exception { |
404 |
Throwable t = threadFailure.getAndSet(null); |
405 |
if (t != null) { |
406 |
if (t instanceof Error) |
407 |
throw (Error) t; |
408 |
else if (t instanceof RuntimeException) |
409 |
throw (RuntimeException) t; |
410 |
else if (t instanceof Exception) |
411 |
throw (Exception) t; |
412 |
else { |
413 |
AssertionFailedError afe = |
414 |
new AssertionFailedError(t.toString()); |
415 |
afe.initCause(t); |
416 |
throw afe; |
417 |
} |
418 |
} |
419 |
|
420 |
if (Thread.interrupted()) |
421 |
throw new AssertionFailedError("interrupt status set in main thread"); |
422 |
|
423 |
checkForkJoinPoolThreadLeaks(); |
424 |
} |
425 |
|
426 |
/** |
427 |
* Find missing try { ... } finally { joinPool(e); } |
428 |
*/ |
429 |
void checkForkJoinPoolThreadLeaks() throws InterruptedException { |
430 |
Thread[] survivors = new Thread[5]; |
431 |
int count = Thread.enumerate(survivors); |
432 |
for (int i = 0; i < count; i++) { |
433 |
Thread thread = survivors[i]; |
434 |
String name = thread.getName(); |
435 |
if (name.startsWith("ForkJoinPool-")) { |
436 |
// give thread some time to terminate |
437 |
thread.join(LONG_DELAY_MS); |
438 |
if (!thread.isAlive()) continue; |
439 |
thread.stop(); |
440 |
throw new AssertionFailedError |
441 |
(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n", |
442 |
toString(), name)); |
443 |
} |
444 |
} |
445 |
} |
446 |
|
447 |
/** |
448 |
* Just like fail(reason), but additionally recording (using |
449 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
450 |
* the current testcase will fail. |
451 |
*/ |
452 |
public void threadFail(String reason) { |
453 |
try { |
454 |
fail(reason); |
455 |
} catch (AssertionFailedError t) { |
456 |
threadRecordFailure(t); |
457 |
fail(reason); |
458 |
} |
459 |
} |
460 |
|
461 |
/** |
462 |
* Just like assertTrue(b), but additionally recording (using |
463 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
464 |
* the current testcase will fail. |
465 |
*/ |
466 |
public void threadAssertTrue(boolean b) { |
467 |
try { |
468 |
assertTrue(b); |
469 |
} catch (AssertionFailedError t) { |
470 |
threadRecordFailure(t); |
471 |
throw t; |
472 |
} |
473 |
} |
474 |
|
475 |
/** |
476 |
* Just like assertFalse(b), but additionally recording (using |
477 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
478 |
* the current testcase will fail. |
479 |
*/ |
480 |
public void threadAssertFalse(boolean b) { |
481 |
try { |
482 |
assertFalse(b); |
483 |
} catch (AssertionFailedError t) { |
484 |
threadRecordFailure(t); |
485 |
throw t; |
486 |
} |
487 |
} |
488 |
|
489 |
/** |
490 |
* Just like assertNull(x), but additionally recording (using |
491 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
492 |
* the current testcase will fail. |
493 |
*/ |
494 |
public void threadAssertNull(Object x) { |
495 |
try { |
496 |
assertNull(x); |
497 |
} catch (AssertionFailedError t) { |
498 |
threadRecordFailure(t); |
499 |
throw t; |
500 |
} |
501 |
} |
502 |
|
503 |
/** |
504 |
* Just like assertEquals(x, y), but additionally recording (using |
505 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
506 |
* the current testcase will fail. |
507 |
*/ |
508 |
public void threadAssertEquals(long x, long y) { |
509 |
try { |
510 |
assertEquals(x, y); |
511 |
} catch (AssertionFailedError t) { |
512 |
threadRecordFailure(t); |
513 |
throw t; |
514 |
} |
515 |
} |
516 |
|
517 |
/** |
518 |
* Just like assertEquals(x, y), but additionally recording (using |
519 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
520 |
* the current testcase will fail. |
521 |
*/ |
522 |
public void threadAssertEquals(Object x, Object y) { |
523 |
try { |
524 |
assertEquals(x, y); |
525 |
} catch (AssertionFailedError t) { |
526 |
threadRecordFailure(t); |
527 |
throw t; |
528 |
} catch (Throwable t) { |
529 |
threadUnexpectedException(t); |
530 |
} |
531 |
} |
532 |
|
533 |
/** |
534 |
* Just like assertSame(x, y), but additionally recording (using |
535 |
* threadRecordFailure) any AssertionFailedError thrown, so that |
536 |
* the current testcase will fail. |
537 |
*/ |
538 |
public void threadAssertSame(Object x, Object y) { |
539 |
try { |
540 |
assertSame(x, y); |
541 |
} catch (AssertionFailedError t) { |
542 |
threadRecordFailure(t); |
543 |
throw t; |
544 |
} |
545 |
} |
546 |
|
547 |
/** |
548 |
* Calls threadFail with message "should throw exception". |
549 |
*/ |
550 |
public void threadShouldThrow() { |
551 |
threadFail("should throw exception"); |
552 |
} |
553 |
|
554 |
/** |
555 |
* Calls threadFail with message "should throw" + exceptionName. |
556 |
*/ |
557 |
public void threadShouldThrow(String exceptionName) { |
558 |
threadFail("should throw " + exceptionName); |
559 |
} |
560 |
|
561 |
/** |
562 |
* Records the given exception using {@link #threadRecordFailure}, |
563 |
* then rethrows the exception, wrapping it in an |
564 |
* AssertionFailedError if necessary. |
565 |
*/ |
566 |
public void threadUnexpectedException(Throwable t) { |
567 |
threadRecordFailure(t); |
568 |
t.printStackTrace(); |
569 |
if (t instanceof RuntimeException) |
570 |
throw (RuntimeException) t; |
571 |
else if (t instanceof Error) |
572 |
throw (Error) t; |
573 |
else { |
574 |
AssertionFailedError afe = |
575 |
new AssertionFailedError("unexpected exception: " + t); |
576 |
afe.initCause(t); |
577 |
throw afe; |
578 |
} |
579 |
} |
580 |
|
581 |
/** |
582 |
* Delays, via Thread.sleep, for the given millisecond delay, but |
583 |
* if the sleep is shorter than specified, may re-sleep or yield |
584 |
* until time elapses. |
585 |
*/ |
586 |
static void delay(long millis) throws InterruptedException { |
587 |
long startTime = System.nanoTime(); |
588 |
long ns = millis * 1000 * 1000; |
589 |
for (;;) { |
590 |
if (millis > 0L) |
591 |
Thread.sleep(millis); |
592 |
else // too short to sleep |
593 |
Thread.yield(); |
594 |
long d = ns - (System.nanoTime() - startTime); |
595 |
if (d > 0L) |
596 |
millis = d / (1000 * 1000); |
597 |
else |
598 |
break; |
599 |
} |
600 |
} |
601 |
|
602 |
/** |
603 |
* Waits out termination of a thread pool or fails doing so. |
604 |
*/ |
605 |
void joinPool(ExecutorService exec) { |
606 |
try { |
607 |
exec.shutdown(); |
608 |
assertTrue("ExecutorService did not terminate in a timely manner", |
609 |
exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)); |
610 |
} catch (SecurityException ok) { |
611 |
// Allowed in case test doesn't have privs |
612 |
} catch (InterruptedException ie) { |
613 |
fail("Unexpected InterruptedException"); |
614 |
} |
615 |
} |
616 |
|
617 |
/** |
618 |
* A debugging tool to print all stack traces, as jstack does. |
619 |
*/ |
620 |
static void printAllStackTraces() { |
621 |
for (ThreadInfo info : |
622 |
ManagementFactory.getThreadMXBean() |
623 |
.dumpAllThreads(true, true)) |
624 |
System.err.print(info); |
625 |
} |
626 |
|
627 |
/** |
628 |
* Checks that thread does not terminate within the default |
629 |
* millisecond delay of {@code timeoutMillis()}. |
630 |
*/ |
631 |
void assertThreadStaysAlive(Thread thread) { |
632 |
assertThreadStaysAlive(thread, timeoutMillis()); |
633 |
} |
634 |
|
635 |
/** |
636 |
* Checks that thread does not terminate within the given millisecond delay. |
637 |
*/ |
638 |
void assertThreadStaysAlive(Thread thread, long millis) { |
639 |
try { |
640 |
// No need to optimize the failing case via Thread.join. |
641 |
delay(millis); |
642 |
assertTrue(thread.isAlive()); |
643 |
} catch (InterruptedException ie) { |
644 |
fail("Unexpected InterruptedException"); |
645 |
} |
646 |
} |
647 |
|
648 |
/** |
649 |
* Checks that the threads do not terminate within the default |
650 |
* millisecond delay of {@code timeoutMillis()}. |
651 |
*/ |
652 |
void assertThreadsStayAlive(Thread... threads) { |
653 |
assertThreadsStayAlive(timeoutMillis(), threads); |
654 |
} |
655 |
|
656 |
/** |
657 |
* Checks that the threads do not terminate within the given millisecond delay. |
658 |
*/ |
659 |
void assertThreadsStayAlive(long millis, Thread... threads) { |
660 |
try { |
661 |
// No need to optimize the failing case via Thread.join. |
662 |
delay(millis); |
663 |
for (Thread thread : threads) |
664 |
assertTrue(thread.isAlive()); |
665 |
} catch (InterruptedException ie) { |
666 |
fail("Unexpected InterruptedException"); |
667 |
} |
668 |
} |
669 |
|
670 |
/** |
671 |
* Checks that future.get times out, with the default timeout of |
672 |
* {@code timeoutMillis()}. |
673 |
*/ |
674 |
void assertFutureTimesOut(Future future) { |
675 |
assertFutureTimesOut(future, timeoutMillis()); |
676 |
} |
677 |
|
678 |
/** |
679 |
* Checks that future.get times out, with the given millisecond timeout. |
680 |
*/ |
681 |
void assertFutureTimesOut(Future future, long timeoutMillis) { |
682 |
long startTime = System.nanoTime(); |
683 |
try { |
684 |
future.get(timeoutMillis, MILLISECONDS); |
685 |
shouldThrow(); |
686 |
} catch (TimeoutException success) { |
687 |
} catch (Exception e) { |
688 |
threadUnexpectedException(e); |
689 |
} finally { future.cancel(true); } |
690 |
assertTrue(millisElapsedSince(startTime) >= timeoutMillis); |
691 |
} |
692 |
|
693 |
/** |
694 |
* Fails with message "should throw exception". |
695 |
*/ |
696 |
public void shouldThrow() { |
697 |
fail("Should throw exception"); |
698 |
} |
699 |
|
700 |
/** |
701 |
* Fails with message "should throw " + exceptionName. |
702 |
*/ |
703 |
public void shouldThrow(String exceptionName) { |
704 |
fail("Should throw " + exceptionName); |
705 |
} |
706 |
|
707 |
/** |
708 |
* The number of elements to place in collections, arrays, etc. |
709 |
*/ |
710 |
public static final int SIZE = 20; |
711 |
|
712 |
// Some convenient Integer constants |
713 |
|
714 |
public static final Integer zero = new Integer(0); |
715 |
public static final Integer one = new Integer(1); |
716 |
public static final Integer two = new Integer(2); |
717 |
public static final Integer three = new Integer(3); |
718 |
public static final Integer four = new Integer(4); |
719 |
public static final Integer five = new Integer(5); |
720 |
public static final Integer six = new Integer(6); |
721 |
public static final Integer seven = new Integer(7); |
722 |
public static final Integer eight = new Integer(8); |
723 |
public static final Integer nine = new Integer(9); |
724 |
public static final Integer m1 = new Integer(-1); |
725 |
public static final Integer m2 = new Integer(-2); |
726 |
public static final Integer m3 = new Integer(-3); |
727 |
public static final Integer m4 = new Integer(-4); |
728 |
public static final Integer m5 = new Integer(-5); |
729 |
public static final Integer m6 = new Integer(-6); |
730 |
public static final Integer m10 = new Integer(-10); |
731 |
|
732 |
/** |
733 |
* Runs Runnable r with a security policy that permits precisely |
734 |
* the specified permissions. If there is no current security |
735 |
* manager, the runnable is run twice, both with and without a |
736 |
* security manager. We require that any security manager permit |
737 |
* getPolicy/setPolicy. |
738 |
*/ |
739 |
public void runWithPermissions(Runnable r, Permission... permissions) { |
740 |
SecurityManager sm = System.getSecurityManager(); |
741 |
if (sm == null) { |
742 |
r.run(); |
743 |
} |
744 |
runWithSecurityManagerWithPermissions(r, permissions); |
745 |
} |
746 |
|
747 |
/** |
748 |
* Runs Runnable r with a security policy that permits precisely |
749 |
* the specified permissions. If there is no current security |
750 |
* manager, a temporary one is set for the duration of the |
751 |
* Runnable. We require that any security manager permit |
752 |
* getPolicy/setPolicy. |
753 |
*/ |
754 |
public void runWithSecurityManagerWithPermissions(Runnable r, |
755 |
Permission... permissions) { |
756 |
SecurityManager sm = System.getSecurityManager(); |
757 |
if (sm == null) { |
758 |
Policy savedPolicy = Policy.getPolicy(); |
759 |
try { |
760 |
Policy.setPolicy(permissivePolicy()); |
761 |
System.setSecurityManager(new SecurityManager()); |
762 |
runWithSecurityManagerWithPermissions(r, permissions); |
763 |
} finally { |
764 |
System.setSecurityManager(null); |
765 |
Policy.setPolicy(savedPolicy); |
766 |
} |
767 |
} else { |
768 |
Policy savedPolicy = Policy.getPolicy(); |
769 |
AdjustablePolicy policy = new AdjustablePolicy(permissions); |
770 |
Policy.setPolicy(policy); |
771 |
|
772 |
try { |
773 |
r.run(); |
774 |
} finally { |
775 |
policy.addPermission(new SecurityPermission("setPolicy")); |
776 |
Policy.setPolicy(savedPolicy); |
777 |
} |
778 |
} |
779 |
} |
780 |
|
781 |
/** |
782 |
* Runs a runnable without any permissions. |
783 |
*/ |
784 |
public void runWithoutPermissions(Runnable r) { |
785 |
runWithPermissions(r); |
786 |
} |
787 |
|
788 |
/** |
789 |
* A security policy where new permissions can be dynamically added |
790 |
* or all cleared. |
791 |
*/ |
792 |
public static class AdjustablePolicy extends java.security.Policy { |
793 |
Permissions perms = new Permissions(); |
794 |
AdjustablePolicy(Permission... permissions) { |
795 |
for (Permission permission : permissions) |
796 |
perms.add(permission); |
797 |
} |
798 |
void addPermission(Permission perm) { perms.add(perm); } |
799 |
void clearPermissions() { perms = new Permissions(); } |
800 |
public PermissionCollection getPermissions(CodeSource cs) { |
801 |
return perms; |
802 |
} |
803 |
public PermissionCollection getPermissions(ProtectionDomain pd) { |
804 |
return perms; |
805 |
} |
806 |
public boolean implies(ProtectionDomain pd, Permission p) { |
807 |
return perms.implies(p); |
808 |
} |
809 |
public void refresh() {} |
810 |
public String toString() { |
811 |
List<Permission> ps = new ArrayList<Permission>(); |
812 |
for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();) |
813 |
ps.add(e.nextElement()); |
814 |
return "AdjustablePolicy with permissions " + ps; |
815 |
} |
816 |
} |
817 |
|
818 |
/** |
819 |
* Returns a policy containing all the permissions we ever need. |
820 |
*/ |
821 |
public static Policy permissivePolicy() { |
822 |
return new AdjustablePolicy |
823 |
// Permissions j.u.c. needs directly |
824 |
(new RuntimePermission("modifyThread"), |
825 |
new RuntimePermission("getClassLoader"), |
826 |
new RuntimePermission("setContextClassLoader"), |
827 |
// Permissions needed to change permissions! |
828 |
new SecurityPermission("getPolicy"), |
829 |
new SecurityPermission("setPolicy"), |
830 |
new RuntimePermission("setSecurityManager"), |
831 |
// Permissions needed by the junit test harness |
832 |
new RuntimePermission("accessDeclaredMembers"), |
833 |
new PropertyPermission("*", "read"), |
834 |
new java.io.FilePermission("<<ALL FILES>>", "read")); |
835 |
} |
836 |
|
837 |
/** |
838 |
* Sleeps until the given time has elapsed. |
839 |
* Throws AssertionFailedError if interrupted. |
840 |
*/ |
841 |
void sleep(long millis) { |
842 |
try { |
843 |
delay(millis); |
844 |
} catch (InterruptedException ie) { |
845 |
AssertionFailedError afe = |
846 |
new AssertionFailedError("Unexpected InterruptedException"); |
847 |
afe.initCause(ie); |
848 |
throw afe; |
849 |
} |
850 |
} |
851 |
|
852 |
/** |
853 |
* Spin-waits up to the specified number of milliseconds for the given |
854 |
* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING. |
855 |
*/ |
856 |
void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) { |
857 |
long startTime = System.nanoTime(); |
858 |
for (;;) { |
859 |
Thread.State s = thread.getState(); |
860 |
if (s == Thread.State.BLOCKED || |
861 |
s == Thread.State.WAITING || |
862 |
s == Thread.State.TIMED_WAITING) |
863 |
return; |
864 |
else if (s == Thread.State.TERMINATED) |
865 |
fail("Unexpected thread termination"); |
866 |
else if (millisElapsedSince(startTime) > timeoutMillis) { |
867 |
threadAssertTrue(thread.isAlive()); |
868 |
return; |
869 |
} |
870 |
Thread.yield(); |
871 |
} |
872 |
} |
873 |
|
874 |
/** |
875 |
* Waits up to LONG_DELAY_MS for the given thread to enter a wait |
876 |
* state: BLOCKED, WAITING, or TIMED_WAITING. |
877 |
*/ |
878 |
void waitForThreadToEnterWaitState(Thread thread) { |
879 |
waitForThreadToEnterWaitState(thread, LONG_DELAY_MS); |
880 |
} |
881 |
|
882 |
/** |
883 |
* Returns the number of milliseconds since time given by |
884 |
* startNanoTime, which must have been previously returned from a |
885 |
* call to {@link System.nanoTime()}. |
886 |
*/ |
887 |
long millisElapsedSince(long startNanoTime) { |
888 |
return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime); |
889 |
} |
890 |
|
891 |
/** |
892 |
* Returns a new started daemon Thread running the given runnable. |
893 |
*/ |
894 |
Thread newStartedThread(Runnable runnable) { |
895 |
Thread t = new Thread(runnable); |
896 |
t.setDaemon(true); |
897 |
t.start(); |
898 |
return t; |
899 |
} |
900 |
|
901 |
/** |
902 |
* Waits for the specified time (in milliseconds) for the thread |
903 |
* to terminate (using {@link Thread#join(long)}), else interrupts |
904 |
* the thread (in the hope that it may terminate later) and fails. |
905 |
*/ |
906 |
void awaitTermination(Thread t, long timeoutMillis) { |
907 |
try { |
908 |
t.join(timeoutMillis); |
909 |
} catch (InterruptedException ie) { |
910 |
threadUnexpectedException(ie); |
911 |
} finally { |
912 |
if (t.getState() != Thread.State.TERMINATED) { |
913 |
t.interrupt(); |
914 |
fail("Test timed out"); |
915 |
} |
916 |
} |
917 |
} |
918 |
|
919 |
/** |
920 |
* Waits for LONG_DELAY_MS milliseconds for the thread to |
921 |
* terminate (using {@link Thread#join(long)}), else interrupts |
922 |
* the thread (in the hope that it may terminate later) and fails. |
923 |
*/ |
924 |
void awaitTermination(Thread t) { |
925 |
awaitTermination(t, LONG_DELAY_MS); |
926 |
} |
927 |
|
928 |
// Some convenient Runnable classes |
929 |
|
930 |
public abstract class CheckedRunnable implements Runnable { |
931 |
protected abstract void realRun() throws Throwable; |
932 |
|
933 |
public final void run() { |
934 |
try { |
935 |
realRun(); |
936 |
} catch (Throwable t) { |
937 |
threadUnexpectedException(t); |
938 |
} |
939 |
} |
940 |
} |
941 |
|
942 |
public abstract class RunnableShouldThrow implements Runnable { |
943 |
protected abstract void realRun() throws Throwable; |
944 |
|
945 |
final Class<?> exceptionClass; |
946 |
|
947 |
<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) { |
948 |
this.exceptionClass = exceptionClass; |
949 |
} |
950 |
|
951 |
public final void run() { |
952 |
try { |
953 |
realRun(); |
954 |
threadShouldThrow(exceptionClass.getSimpleName()); |
955 |
} catch (Throwable t) { |
956 |
if (! exceptionClass.isInstance(t)) |
957 |
threadUnexpectedException(t); |
958 |
} |
959 |
} |
960 |
} |
961 |
|
962 |
public abstract class ThreadShouldThrow extends Thread { |
963 |
protected abstract void realRun() throws Throwable; |
964 |
|
965 |
final Class<?> exceptionClass; |
966 |
|
967 |
<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) { |
968 |
this.exceptionClass = exceptionClass; |
969 |
} |
970 |
|
971 |
public final void run() { |
972 |
try { |
973 |
realRun(); |
974 |
threadShouldThrow(exceptionClass.getSimpleName()); |
975 |
} catch (Throwable t) { |
976 |
if (! exceptionClass.isInstance(t)) |
977 |
threadUnexpectedException(t); |
978 |
} |
979 |
} |
980 |
} |
981 |
|
982 |
public abstract class CheckedInterruptedRunnable implements Runnable { |
983 |
protected abstract void realRun() throws Throwable; |
984 |
|
985 |
public final void run() { |
986 |
try { |
987 |
realRun(); |
988 |
threadShouldThrow("InterruptedException"); |
989 |
} catch (InterruptedException success) { |
990 |
threadAssertFalse(Thread.interrupted()); |
991 |
} catch (Throwable t) { |
992 |
threadUnexpectedException(t); |
993 |
} |
994 |
} |
995 |
} |
996 |
|
997 |
public abstract class CheckedCallable<T> implements Callable<T> { |
998 |
protected abstract T realCall() throws Throwable; |
999 |
|
1000 |
public final T call() { |
1001 |
try { |
1002 |
return realCall(); |
1003 |
} catch (Throwable t) { |
1004 |
threadUnexpectedException(t); |
1005 |
return null; |
1006 |
} |
1007 |
} |
1008 |
} |
1009 |
|
1010 |
public abstract class CheckedInterruptedCallable<T> |
1011 |
implements Callable<T> { |
1012 |
protected abstract T realCall() throws Throwable; |
1013 |
|
1014 |
public final T call() { |
1015 |
try { |
1016 |
T result = realCall(); |
1017 |
threadShouldThrow("InterruptedException"); |
1018 |
return result; |
1019 |
} catch (InterruptedException success) { |
1020 |
threadAssertFalse(Thread.interrupted()); |
1021 |
} catch (Throwable t) { |
1022 |
threadUnexpectedException(t); |
1023 |
} |
1024 |
return null; |
1025 |
} |
1026 |
} |
1027 |
|
1028 |
public static class NoOpRunnable implements Runnable { |
1029 |
public void run() {} |
1030 |
} |
1031 |
|
1032 |
public static class NoOpCallable implements Callable { |
1033 |
public Object call() { return Boolean.TRUE; } |
1034 |
} |
1035 |
|
1036 |
public static final String TEST_STRING = "a test string"; |
1037 |
|
1038 |
public static class StringTask implements Callable<String> { |
1039 |
public String call() { return TEST_STRING; } |
1040 |
} |
1041 |
|
1042 |
public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) { |
1043 |
return new CheckedCallable<String>() { |
1044 |
protected String realCall() { |
1045 |
try { |
1046 |
latch.await(); |
1047 |
} catch (InterruptedException quittingTime) {} |
1048 |
return TEST_STRING; |
1049 |
}}; |
1050 |
} |
1051 |
|
1052 |
public Runnable awaiter(final CountDownLatch latch) { |
1053 |
return new CheckedRunnable() { |
1054 |
public void realRun() throws InterruptedException { |
1055 |
await(latch); |
1056 |
}}; |
1057 |
} |
1058 |
|
1059 |
public void await(CountDownLatch latch) { |
1060 |
try { |
1061 |
assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS)); |
1062 |
} catch (Throwable t) { |
1063 |
threadUnexpectedException(t); |
1064 |
} |
1065 |
} |
1066 |
|
1067 |
public void await(Semaphore semaphore) { |
1068 |
try { |
1069 |
assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS)); |
1070 |
} catch (Throwable t) { |
1071 |
threadUnexpectedException(t); |
1072 |
} |
1073 |
} |
1074 |
|
1075 |
// /** |
1076 |
// * Spin-waits up to LONG_DELAY_MS until flag becomes true. |
1077 |
// */ |
1078 |
// public void await(AtomicBoolean flag) { |
1079 |
// await(flag, LONG_DELAY_MS); |
1080 |
// } |
1081 |
|
1082 |
// /** |
1083 |
// * Spin-waits up to the specified timeout until flag becomes true. |
1084 |
// */ |
1085 |
// public void await(AtomicBoolean flag, long timeoutMillis) { |
1086 |
// long startTime = System.nanoTime(); |
1087 |
// while (!flag.get()) { |
1088 |
// if (millisElapsedSince(startTime) > timeoutMillis) |
1089 |
// throw new AssertionFailedError("timed out"); |
1090 |
// Thread.yield(); |
1091 |
// } |
1092 |
// } |
1093 |
|
1094 |
public static class NPETask implements Callable<String> { |
1095 |
public String call() { throw new NullPointerException(); } |
1096 |
} |
1097 |
|
1098 |
public static class CallableOne implements Callable<Integer> { |
1099 |
public Integer call() { return one; } |
1100 |
} |
1101 |
|
1102 |
public class ShortRunnable extends CheckedRunnable { |
1103 |
protected void realRun() throws Throwable { |
1104 |
delay(SHORT_DELAY_MS); |
1105 |
} |
1106 |
} |
1107 |
|
1108 |
public class ShortInterruptedRunnable extends CheckedInterruptedRunnable { |
1109 |
protected void realRun() throws InterruptedException { |
1110 |
delay(SHORT_DELAY_MS); |
1111 |
} |
1112 |
} |
1113 |
|
1114 |
public class SmallRunnable extends CheckedRunnable { |
1115 |
protected void realRun() throws Throwable { |
1116 |
delay(SMALL_DELAY_MS); |
1117 |
} |
1118 |
} |
1119 |
|
1120 |
public class SmallPossiblyInterruptedRunnable extends CheckedRunnable { |
1121 |
protected void realRun() { |
1122 |
try { |
1123 |
delay(SMALL_DELAY_MS); |
1124 |
} catch (InterruptedException ok) {} |
1125 |
} |
1126 |
} |
1127 |
|
1128 |
public class SmallCallable extends CheckedCallable { |
1129 |
protected Object realCall() throws InterruptedException { |
1130 |
delay(SMALL_DELAY_MS); |
1131 |
return Boolean.TRUE; |
1132 |
} |
1133 |
} |
1134 |
|
1135 |
public class MediumRunnable extends CheckedRunnable { |
1136 |
protected void realRun() throws Throwable { |
1137 |
delay(MEDIUM_DELAY_MS); |
1138 |
} |
1139 |
} |
1140 |
|
1141 |
public class MediumInterruptedRunnable extends CheckedInterruptedRunnable { |
1142 |
protected void realRun() throws InterruptedException { |
1143 |
delay(MEDIUM_DELAY_MS); |
1144 |
} |
1145 |
} |
1146 |
|
1147 |
public Runnable possiblyInterruptedRunnable(final long timeoutMillis) { |
1148 |
return new CheckedRunnable() { |
1149 |
protected void realRun() { |
1150 |
try { |
1151 |
delay(timeoutMillis); |
1152 |
} catch (InterruptedException ok) {} |
1153 |
}}; |
1154 |
} |
1155 |
|
1156 |
public class MediumPossiblyInterruptedRunnable extends CheckedRunnable { |
1157 |
protected void realRun() { |
1158 |
try { |
1159 |
delay(MEDIUM_DELAY_MS); |
1160 |
} catch (InterruptedException ok) {} |
1161 |
} |
1162 |
} |
1163 |
|
1164 |
public class LongPossiblyInterruptedRunnable extends CheckedRunnable { |
1165 |
protected void realRun() { |
1166 |
try { |
1167 |
delay(LONG_DELAY_MS); |
1168 |
} catch (InterruptedException ok) {} |
1169 |
} |
1170 |
} |
1171 |
|
1172 |
/** |
1173 |
* For use as ThreadFactory in constructors |
1174 |
*/ |
1175 |
public static class SimpleThreadFactory implements ThreadFactory { |
1176 |
public Thread newThread(Runnable r) { |
1177 |
return new Thread(r); |
1178 |
} |
1179 |
} |
1180 |
|
1181 |
public interface TrackedRunnable extends Runnable { |
1182 |
boolean isDone(); |
1183 |
} |
1184 |
|
1185 |
public static TrackedRunnable trackedRunnable(final long timeoutMillis) { |
1186 |
return new TrackedRunnable() { |
1187 |
private volatile boolean done = false; |
1188 |
public boolean isDone() { return done; } |
1189 |
public void run() { |
1190 |
try { |
1191 |
delay(timeoutMillis); |
1192 |
done = true; |
1193 |
} catch (InterruptedException ok) {} |
1194 |
} |
1195 |
}; |
1196 |
} |
1197 |
|
1198 |
public static class TrackedShortRunnable implements Runnable { |
1199 |
public volatile boolean done = false; |
1200 |
public void run() { |
1201 |
try { |
1202 |
delay(SHORT_DELAY_MS); |
1203 |
done = true; |
1204 |
} catch (InterruptedException ok) {} |
1205 |
} |
1206 |
} |
1207 |
|
1208 |
public static class TrackedSmallRunnable implements Runnable { |
1209 |
public volatile boolean done = false; |
1210 |
public void run() { |
1211 |
try { |
1212 |
delay(SMALL_DELAY_MS); |
1213 |
done = true; |
1214 |
} catch (InterruptedException ok) {} |
1215 |
} |
1216 |
} |
1217 |
|
1218 |
public static class TrackedMediumRunnable implements Runnable { |
1219 |
public volatile boolean done = false; |
1220 |
public void run() { |
1221 |
try { |
1222 |
delay(MEDIUM_DELAY_MS); |
1223 |
done = true; |
1224 |
} catch (InterruptedException ok) {} |
1225 |
} |
1226 |
} |
1227 |
|
1228 |
public static class TrackedLongRunnable implements Runnable { |
1229 |
public volatile boolean done = false; |
1230 |
public void run() { |
1231 |
try { |
1232 |
delay(LONG_DELAY_MS); |
1233 |
done = true; |
1234 |
} catch (InterruptedException ok) {} |
1235 |
} |
1236 |
} |
1237 |
|
1238 |
public static class TrackedNoOpRunnable implements Runnable { |
1239 |
public volatile boolean done = false; |
1240 |
public void run() { |
1241 |
done = true; |
1242 |
} |
1243 |
} |
1244 |
|
1245 |
public static class TrackedCallable implements Callable { |
1246 |
public volatile boolean done = false; |
1247 |
public Object call() { |
1248 |
try { |
1249 |
delay(SMALL_DELAY_MS); |
1250 |
done = true; |
1251 |
} catch (InterruptedException ok) {} |
1252 |
return Boolean.TRUE; |
1253 |
} |
1254 |
} |
1255 |
|
1256 |
/** |
1257 |
* Analog of CheckedRunnable for RecursiveAction |
1258 |
*/ |
1259 |
public abstract class CheckedRecursiveAction extends RecursiveAction { |
1260 |
protected abstract void realCompute() throws Throwable; |
1261 |
|
1262 |
@Override protected final void compute() { |
1263 |
try { |
1264 |
realCompute(); |
1265 |
} catch (Throwable t) { |
1266 |
threadUnexpectedException(t); |
1267 |
} |
1268 |
} |
1269 |
} |
1270 |
|
1271 |
/** |
1272 |
* Analog of CheckedCallable for RecursiveTask |
1273 |
*/ |
1274 |
public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> { |
1275 |
protected abstract T realCompute() throws Throwable; |
1276 |
|
1277 |
@Override protected final T compute() { |
1278 |
try { |
1279 |
return realCompute(); |
1280 |
} catch (Throwable t) { |
1281 |
threadUnexpectedException(t); |
1282 |
return null; |
1283 |
} |
1284 |
} |
1285 |
} |
1286 |
|
1287 |
/** |
1288 |
* For use as RejectedExecutionHandler in constructors |
1289 |
*/ |
1290 |
public static class NoOpREHandler implements RejectedExecutionHandler { |
1291 |
public void rejectedExecution(Runnable r, |
1292 |
ThreadPoolExecutor executor) {} |
1293 |
} |
1294 |
|
1295 |
/** |
1296 |
* A CyclicBarrier that uses timed await and fails with |
1297 |
* AssertionFailedErrors instead of throwing checked exceptions. |
1298 |
*/ |
1299 |
public class CheckedBarrier extends CyclicBarrier { |
1300 |
public CheckedBarrier(int parties) { super(parties); } |
1301 |
|
1302 |
public int await() { |
1303 |
try { |
1304 |
return super.await(2 * LONG_DELAY_MS, MILLISECONDS); |
1305 |
} catch (TimeoutException e) { |
1306 |
throw new AssertionFailedError("timed out"); |
1307 |
} catch (Exception e) { |
1308 |
AssertionFailedError afe = |
1309 |
new AssertionFailedError("Unexpected exception: " + e); |
1310 |
afe.initCause(e); |
1311 |
throw afe; |
1312 |
} |
1313 |
} |
1314 |
} |
1315 |
|
1316 |
void checkEmpty(BlockingQueue q) { |
1317 |
try { |
1318 |
assertTrue(q.isEmpty()); |
1319 |
assertEquals(0, q.size()); |
1320 |
assertNull(q.peek()); |
1321 |
assertNull(q.poll()); |
1322 |
assertNull(q.poll(0, MILLISECONDS)); |
1323 |
assertEquals(q.toString(), "[]"); |
1324 |
assertTrue(Arrays.equals(q.toArray(), new Object[0])); |
1325 |
assertFalse(q.iterator().hasNext()); |
1326 |
try { |
1327 |
q.element(); |
1328 |
shouldThrow(); |
1329 |
} catch (NoSuchElementException success) {} |
1330 |
try { |
1331 |
q.iterator().next(); |
1332 |
shouldThrow(); |
1333 |
} catch (NoSuchElementException success) {} |
1334 |
try { |
1335 |
q.remove(); |
1336 |
shouldThrow(); |
1337 |
} catch (NoSuchElementException success) {} |
1338 |
} catch (InterruptedException ie) { |
1339 |
threadUnexpectedException(ie); |
1340 |
} |
1341 |
} |
1342 |
|
1343 |
void assertSerialEquals(Object x, Object y) { |
1344 |
assertTrue(Arrays.equals(serialBytes(x), serialBytes(y))); |
1345 |
} |
1346 |
|
1347 |
void assertNotSerialEquals(Object x, Object y) { |
1348 |
assertFalse(Arrays.equals(serialBytes(x), serialBytes(y))); |
1349 |
} |
1350 |
|
1351 |
byte[] serialBytes(Object o) { |
1352 |
try { |
1353 |
ByteArrayOutputStream bos = new ByteArrayOutputStream(); |
1354 |
ObjectOutputStream oos = new ObjectOutputStream(bos); |
1355 |
oos.writeObject(o); |
1356 |
oos.flush(); |
1357 |
oos.close(); |
1358 |
return bos.toByteArray(); |
1359 |
} catch (Throwable t) { |
1360 |
threadUnexpectedException(t); |
1361 |
return new byte[0]; |
1362 |
} |
1363 |
} |
1364 |
|
1365 |
@SuppressWarnings("unchecked") |
1366 |
<T> T serialClone(T o) { |
1367 |
try { |
1368 |
ObjectInputStream ois = new ObjectInputStream |
1369 |
(new ByteArrayInputStream(serialBytes(o))); |
1370 |
T clone = (T) ois.readObject(); |
1371 |
assertSame(o.getClass(), clone.getClass()); |
1372 |
return clone; |
1373 |
} catch (Throwable t) { |
1374 |
threadUnexpectedException(t); |
1375 |
return null; |
1376 |
} |
1377 |
} |
1378 |
|
1379 |
public void assertThrows(Class<? extends Throwable> expectedExceptionClass, |
1380 |
Runnable... throwingActions) { |
1381 |
for (Runnable throwingAction : throwingActions) { |
1382 |
boolean threw = false; |
1383 |
try { throwingAction.run(); } |
1384 |
catch (Throwable t) { |
1385 |
threw = true; |
1386 |
if (!expectedExceptionClass.isInstance(t)) { |
1387 |
AssertionFailedError afe = |
1388 |
new AssertionFailedError |
1389 |
("Expected " + expectedExceptionClass.getName() + |
1390 |
", got " + t.getClass().getName()); |
1391 |
afe.initCause(t); |
1392 |
threadUnexpectedException(afe); |
1393 |
} |
1394 |
} |
1395 |
if (!threw) |
1396 |
shouldThrow(expectedExceptionClass.getName()); |
1397 |
} |
1398 |
} |
1399 |
} |