Java tutorial
// Copyright 2011-2014, Esko Luontola <www.orfjackal.net> // This software is released under the Apache License 2.0. // The license text is at http://www.apache.org/licenses/LICENSE-2.0 package fi.jumi.core.suite; import fi.jumi.actors.SingleThreadedActors; import fi.jumi.actors.eventizers.dynamic.DynamicEventizerProvider; import fi.jumi.actors.listeners.*; import fi.jumi.core.api.*; import org.apache.commons.io.output.NullOutputStream; import org.junit.Test; import java.io.*; import java.util.concurrent.Executor; import static org.hamcrest.MatcherAssert.assertThat; import static org.hamcrest.Matchers.containsString; import static org.mockito.Matchers.eq; import static org.mockito.Matchers.notNull; import static org.mockito.Mockito.*; public class InternalErrorReportingExecutorTest { private final SuiteListener suiteListener = mock(SuiteListener.class); private final ByteArrayOutputStream standardOutput = new ByteArrayOutputStream(); private final SingleThreadedActors backingExecutor = new SingleThreadedActors(new DynamicEventizerProvider(), new CrashEarlyFailureHandler(), new NullMessageListener()); private final InternalErrorReportingExecutor executor = new InternalErrorReportingExecutor( backingExecutor.getExecutor(), suiteListener, new PrintStream(standardOutput)); @Test public void reports_internal_errors() { executor.execute(() -> { throw new RuntimeException("the-exception-message"); }); backingExecutor.processEventsUntilIdle(); String expected = String.format("Uncaught exception in thread %s", Thread.currentThread().getName()); verify(suiteListener).onInternalError(eq(expected), notNull(StackTrace.class)); } @Test public void prints_internal_errors_to_standard_output() { executor.execute(() -> { throw new RuntimeException("the-exception-message"); }); backingExecutor.processEventsUntilIdle(); String output = standardOutput.toString(); assertThat(output, containsString("Uncaught exception in thread")); assertThat(output, containsString("java.lang.RuntimeException: the-exception-message")); } @Test public void the_toString_of_the_original_commands_should_not_be_hidden() { SpyExecutor backingExecutor = new SpyExecutor(); InternalErrorReportingExecutor executor = new InternalErrorReportingExecutor(backingExecutor, suiteListener, new PrintStream(new NullOutputStream())); Runnable originalCommand = () -> { }; executor.execute(originalCommand); assertThat(backingExecutor.lastCommand.toString(), containsString(originalCommand.toString())); } private static class SpyExecutor implements Executor { public Runnable lastCommand; @Override public void execute(Runnable command) { lastCommand = command; } } // TODO: should we have special handling of InterruptedException and ThreadDeath? }