| package org.junit.tests.running.methods; |
| |
| import static org.hamcrest.CoreMatchers.containsString; |
| import static org.hamcrest.CoreMatchers.not; |
| import static org.hamcrest.CoreMatchers.is; |
| import static org.hamcrest.MatcherAssert.assertThat; |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import java.io.PrintWriter; |
| import java.io.StringWriter; |
| import java.io.Writer; |
| import java.util.concurrent.TimeUnit; |
| |
| import junit.framework.JUnit4TestAdapter; |
| import junit.framework.TestResult; |
| import org.junit.After; |
| import org.junit.Ignore; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TestRule; |
| import org.junit.rules.Timeout; |
| import org.junit.runner.JUnitCore; |
| import org.junit.runner.Result; |
| |
| public class TimeoutTest { |
| |
| public static class FailureWithTimeoutTest { |
| @Test(timeout = 1000) |
| public void failure() { |
| fail(); |
| } |
| } |
| |
| @Test |
| public void failureWithTimeout() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(FailureWithTimeoutTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(1, result.getFailureCount()); |
| assertEquals(AssertionError.class, result.getFailures().get(0).getException().getClass()); |
| } |
| |
| public static class FailureWithTimeoutRunTimeExceptionTest { |
| @Test(timeout = 1000) |
| public void failure() { |
| throw new NullPointerException(); |
| } |
| } |
| |
| @Test |
| public void failureWithTimeoutRunTimeException() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(FailureWithTimeoutRunTimeExceptionTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(1, result.getFailureCount()); |
| assertEquals(NullPointerException.class, result.getFailures().get(0).getException().getClass()); |
| } |
| |
| public static class SuccessWithTimeoutTest { |
| @Test(timeout = 1000) |
| public void success() { |
| } |
| } |
| |
| @Test |
| public void successWithTimeout() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(SuccessWithTimeoutTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(0, result.getFailureCount()); |
| } |
| |
| public static class TimeoutFailureTest { |
| @Test(timeout = 100) |
| public void success() throws InterruptedException { |
| Thread.sleep(40000); |
| } |
| } |
| |
| @Ignore("was breaking gump") |
| @Test |
| public void timeoutFailure() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(TimeoutFailureTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(1, result.getFailureCount()); |
| assertEquals(InterruptedException.class, result.getFailures().get(0).getException().getClass()); |
| } |
| |
| public static class InfiniteLoopTest { |
| @Test(timeout = 100) |
| public void failure() { |
| infiniteLoop(); |
| } |
| |
| private void infiniteLoop() { |
| for (; ; ) { |
| try { |
| Thread.sleep(10); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| } |
| |
| @Test |
| public void infiniteLoop() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(InfiniteLoopTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(1, result.getFailureCount()); |
| Throwable exception = result.getFailures().get(0).getException(); |
| assertTrue(exception.getMessage().contains("test timed out after 100 milliseconds")); |
| } |
| |
| public static class ImpatientLoopTest { |
| @Test(timeout = 1) |
| public void failure() { |
| infiniteLoop(); |
| } |
| |
| private void infiniteLoop() { |
| for (; ; ) ; |
| } |
| } |
| |
| @Ignore("This breaks sporadically with time differences just slightly more than 200ms") |
| @Test |
| public void infiniteLoopRunsForApproximatelyLengthOfTimeout() throws Exception { |
| // "prime the pump": running these beforehand makes the runtimes more predictable |
| // (because of class loading?) |
| JUnitCore.runClasses(InfiniteLoopTest.class, ImpatientLoopTest.class); |
| long longTime = runAndTime(InfiniteLoopTest.class); |
| long shortTime = runAndTime(ImpatientLoopTest.class); |
| long difference = longTime - shortTime; |
| assertTrue(String.format("Difference was %sms", difference), difference < 200); |
| } |
| |
| private long runAndTime(Class<?> clazz) { |
| JUnitCore core = new JUnitCore(); |
| long startTime = System.currentTimeMillis(); |
| core.run(clazz); |
| long totalTime = System.currentTimeMillis() - startTime; |
| return totalTime; |
| } |
| |
| private String stackForException(Throwable exception) { |
| Writer buffer = new StringWriter(); |
| PrintWriter writer = new PrintWriter(buffer); |
| exception.printStackTrace(writer); |
| return buffer.toString(); |
| } |
| |
| @Test |
| public void stalledThreadAppearsInStackTrace() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(InfiniteLoopTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(1, result.getFailureCount()); |
| Throwable exception = result.getFailures().get(0).getException(); |
| assertThat(stackForException(exception), containsString("infiniteLoop")); // Make sure we have the stalled frame on the stack somewhere |
| } |
| |
| public static class InfiniteLoopMultithreaded { |
| |
| private static class ThreadTest implements Runnable { |
| private boolean fStall; |
| |
| public ThreadTest(boolean stall) { |
| fStall = stall; |
| } |
| |
| public void run() { |
| if (fStall) |
| for (; ; ) ; |
| try { |
| Thread.sleep(500); |
| } catch (InterruptedException e) { |
| } |
| } |
| } |
| |
| public void failure(boolean mainThreadStalls) throws Exception { |
| Thread t1 = new Thread(new ThreadTest(false), "timeout-thr1"); |
| Thread t2 = new Thread(new ThreadTest(!mainThreadStalls), "timeout-thr2"); |
| Thread t3 = new Thread(new ThreadTest(false), "timeout-thr3"); |
| t1.start(); |
| t2.start(); |
| t3.start(); |
| if (mainThreadStalls) |
| for (; ; ) ; |
| t1.join(); |
| t2.join(); |
| t3.join(); |
| } |
| } |
| |
| public static class InfiniteLoopWithStuckThreadTest { |
| @Rule |
| public TestRule globalTimeout = Timeout.builder() |
| .withTimeout(100, TimeUnit.MILLISECONDS) |
| .withLookingForStuckThread(true) |
| .build(); |
| |
| @Test |
| public void failure() throws Exception { |
| (new InfiniteLoopMultithreaded()).failure(false); |
| } |
| } |
| |
| public static class InfiniteLoopStuckInMainThreadTest { |
| @Rule |
| public TestRule globalTimeout = Timeout.builder() |
| .withTimeout(100, TimeUnit.MILLISECONDS) |
| .withLookingForStuckThread(true) |
| .build(); |
| |
| @Test |
| public void failure() throws Exception { |
| (new InfiniteLoopMultithreaded()).failure(true); |
| } |
| } |
| |
| @Test |
| public void timeoutFailureMultithreaded() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(InfiniteLoopWithStuckThreadTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(2, result.getFailureCount()); |
| Throwable exception[] = new Throwable[2]; |
| for (int i = 0; i < 2; i++) |
| exception[i] = result.getFailures().get(i).getException(); |
| assertThat(exception[0].getMessage(), containsString("test timed out after 100 milliseconds")); |
| assertThat(stackForException(exception[0]), containsString("Thread.join")); |
| assertThat(exception[1].getMessage(), containsString("Appears to be stuck in thread timeout-thr2")); |
| } |
| |
| @Test |
| public void timeoutFailureMultithreadedStuckInMain() throws Exception { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(InfiniteLoopStuckInMainThreadTest.class); |
| assertEquals(1, result.getRunCount()); |
| assertEquals(1, result.getFailureCount()); |
| Throwable exception = result.getFailures().get(0).getException(); |
| assertThat(exception.getMessage(), containsString("test timed out after 100 milliseconds")); |
| assertThat(exception.getMessage(), not(containsString("Appears to be stuck"))); |
| } |
| |
| @Test |
| public void compatibility() { |
| TestResult result = new TestResult(); |
| new JUnit4TestAdapter(InfiniteLoopTest.class).run(result); |
| assertEquals(1, result.errorCount()); |
| } |
| |
| public static class WillTimeOut { |
| static boolean afterWasCalled = false; |
| |
| @Test(timeout = 1) |
| public void test() { |
| for (; ; ) { |
| try { |
| Thread.sleep(10000); |
| } catch (InterruptedException e) { |
| // ok, tests are over |
| } |
| } |
| } |
| |
| @After |
| public void after() { |
| afterWasCalled = true; |
| } |
| } |
| |
| @Test |
| public void makeSureAfterIsCalledAfterATimeout() { |
| JUnitCore.runClasses(WillTimeOut.class); |
| assertThat(WillTimeOut.afterWasCalled, is(true)); |
| } |
| |
| public static class TimeOutZero { |
| @Rule |
| public Timeout timeout = Timeout.seconds(0); |
| |
| @Test |
| public void test() { |
| try { |
| Thread.sleep(200); // long enough to suspend thread execution |
| } catch (InterruptedException e) { |
| // Don't care |
| } |
| } |
| } |
| |
| @Test |
| public void testZeroTimeoutIsIgnored() { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(TimeOutZero.class); |
| assertEquals("Should run the test", 1, result.getRunCount()); |
| assertEquals("Test should not have failed", 0, result.getFailureCount()); |
| } |
| |
| private static class TimeoutSubclass extends Timeout { |
| |
| public TimeoutSubclass(long timeout, TimeUnit timeUnit) { |
| super(timeout, timeUnit); |
| } |
| |
| public long getTimeoutFromSuperclass(TimeUnit unit) { |
| return super.getTimeout(unit); |
| } |
| } |
| |
| public static class TimeOutOneSecond { |
| @Rule |
| public TimeoutSubclass timeout = new TimeoutSubclass(1, TimeUnit.SECONDS); |
| |
| @Test |
| public void test() { |
| assertEquals(1000, timeout.getTimeoutFromSuperclass(TimeUnit.MILLISECONDS)); |
| } |
| } |
| |
| @Test |
| public void testGetTimeout() { |
| JUnitCore core = new JUnitCore(); |
| Result result = core.run(TimeOutOneSecond.class); |
| assertEquals("Should run the test", 1, result.getRunCount()); |
| assertEquals("Test should not have failed", 0, result.getFailureCount()); |
| } |
| } |