Best Jmock-library code snippet using org.jmock.test.acceptance.MockeryFinalizationAcceptanceTests.finalizeUntilMessageOrCount
Source:MockeryFinalizationAcceptanceTests.java
...29 ErrorStream localErr = new ErrorStream();30 localErr.install();31 String error = null;32 try {33 finalizeUntilMessageOrCount(localErr, FINALIZE_COUNT);34 error = localErr.output();35 } finally {36 localErr.uninstall();37 }38 if (error != null)39 System.err.println("WARNING - a previous test left output in finalization [" + error + "]");40 }41 @BeforeEach42 public void captureSysErr() {43 capturingErr.install();44 }45 @AfterEach46 public void replaceSysErr() {47 capturingErr.uninstall();48 }49 @ParameterizedTest50 @ArgumentsSource(ImposteriserParameterResolver.class)51 public void mockedInterfaceDoesntWarnOnFinalize(Imposteriser imposterImpl) {52 mockery.setImposteriser(imposterImpl);53 54 checkNoFinalizationMessage(mockery, CharSequence.class);55 }56 @ParameterizedTest57 @ArgumentsSource(CodeGeneratingImposteriserParameterResolver.class)58 public void mockedClassDoesntWarnOnFinalize(Imposteriser imposterImpl) {59 mockery.setImposteriser(imposterImpl);60 checkNoFinalizationMessage(mockery, Object.class);61 }62 public interface TypeThatMakesFinalizePublic {63 public void finalize();64 }65 @ParameterizedTest66 @ArgumentsSource(ImposteriserParameterResolver.class)67 public void mockedTypeThatMakesFinalizePublicDoesntWarnOnFinalize(Imposteriser imposterImpl) {68 mockery.setImposteriser(imposterImpl);69 checkNoFinalizationMessage(mockery, TypeThatMakesFinalizePublic.class);70 }71 private void checkNoFinalizationMessage(Mockery mockery, Class<?> typeToMock) {72 WeakReference<Object> mockHolder = new WeakReference<Object>(mockery.mock(typeToMock));73 while (mockHolder.get() != null) {74 System.gc();75 System.runFinalization();76 }77 finalizeUntilMessageOrCount(capturingErr, FINALIZE_COUNT);78 assertThat(capturingErr.output(), isEmptyOrNullString());79 }80 private static void finalizeUntilMessageOrCount(ErrorStream capturingErr, int count) {81 for (int i = 0; i < count && capturingErr.output().isEmpty(); i++) {82 System.gc();83 System.runFinalization();84 }85 }86 private static class ErrorStream extends PrintStream {87 private PrintStream oldSysErr;88 public ErrorStream() {89 super(new ByteArrayOutputStream());90 }91 public void install() {92 oldSysErr = System.err;93 System.setErr(this);94 }...
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