Example usage for java.lang Error getCause

Introduction

In this page you can find the example usage for java.lang Error getCause.

Prototype

public synchronized Throwable getCause() 

Source Link

Document

Returns the cause of this throwable or null if the cause is nonexistent or unknown.

Usage

From source file:io.servicecomb.serviceregistry.config.TestPropertiesLoader.java

@Test
public void testExtendedClassCompatible() {
    Configuration configuration = new DynamicConfiguration();
    configuration.setProperty(CONFIG_SERVICE_DESCRIPTION_KEY + AbstractPropertiesLoader.EXTENDED_CLASS,
            "invalidClass");

    AbstractPropertiesLoader loader = MicroservicePropertiesLoader.INSTANCE;
    try {/*from  w w w  .ja v  a 2s.  c  o  m*/
        loader.loadProperties(configuration);
        Assert.fail("Must throw exception");
    } catch (Error e) {
        Assert.assertEquals(ClassNotFoundException.class, e.getCause().getClass());
        Assert.assertEquals("invalidClass", e.getCause().getMessage());
    }
}

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From source file:io.servicecomb.serviceregistry.config.TestPropertiesLoader.java

@Test
public void testInvalidExtendedClass() {
    ConfigModel configModel = MicroserviceDefinition.createConfigModel("default", "invalidExtendedClass");
    @SuppressWarnings("unchecked")
    Map<String, Object> desc = (Map<String, Object>) configModel.getConfig()
            .get(CONFIG_SERVICE_DESCRIPTION_KEY);
    desc.put("propertyExtentedClass", "invalidClass");
    MicroserviceDefinition microserviceDefinition = new MicroserviceDefinition(Arrays.asList(configModel));
    try {/* w  w  w .  j  av a  2s .  co m*/
        microserviceFactory.create(microserviceDefinition);
        Assert.fail("Must throw exception");
    } catch (Error e) {
        Assert.assertEquals(ClassNotFoundException.class, e.getCause().getClass());
        Assert.assertEquals("invalidClass", e.getCause().getMessage());
    }
}

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From source file:com.puppycrawl.tools.checkstyle.CheckerTest.java

@Test
public void testCatchErrorInProcessFilesMethod() throws Exception {
    // The idea of the test is to satisfy coverage rate.
    // An Error indicates serious problems that a reasonable application should not try to
    // catch, but due to issue https://github.com/checkstyle/checkstyle/issues/2285
    // we catch errors in 'processFiles' method. Most such errors are abnormal conditions,
    // that is why we use PowerMockito to reproduse them.
    final File mock = PowerMockito.mock(File.class);
    // Assume that I/O error is happened when we try to invoke 'lastModified()' method.
    final String errorMessage = "Java Virtual Machine is broken"
            + " or has run out of resources necessary for it to continue operating.";
    final Error expectedError = new IOError(new InternalError(errorMessage));
    when(mock.lastModified()).thenThrow(expectedError);
    final Checker checker = new Checker();
    final List<File> filesToProcess = Lists.newArrayList();
    filesToProcess.add(mock);/*w  w  w . j a  va2  s .c o  m*/
    try {
        checker.process(filesToProcess);
        fail("IOError is expected!");
    } catch (Error error) {
        assertThat(error.getCause(), instanceOf(IOError.class));
        assertThat(error.getCause().getCause(), instanceOf(InternalError.class));
        assertEquals(errorMessage, error.getCause().getCause().getMessage());
    }
}

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