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How to use withContextClassLoader method of org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner class

Best Powermock code snippet using org.powermock.modules.junit4.internal.impl.DelegatingPowerMockRunner.withContextClassLoader

Source:DelegatingPowerMockRunner.java

...83        /*84         * Because of the mockito integration it seems like it is necessary to85         * set context classloader during delegate creation ...86         */87        return withContextClassLoader(testClass.getClassLoader(),88                new Callable<Runner>() {89            @Override90            public Runner call() throws Exception {91                try {92                    return Whitebox.invokeConstructor(93                            testClass.isAnnotationPresent(PowerMockRunnerDelegate.class)94                            ? testClass.getAnnotation(PowerMockRunnerDelegate.class).value()95                            : PowerMockRunnerDelegate.DefaultJUnitRunner.class,96                            new Class[] {Class.class},97                            new Object[] {testClass});98                } catch (ConstructorNotFoundException rootProblem) {99                    if (testClass.isAnnotationPresent(PowerMockRunnerDelegate.class)100                            && JUnitVersion.isGreaterThanOrEqualTo("4.5")) {101                        try {102                            return Whitebox.invokeConstructor(testClass.getAnnotation(PowerMockRunnerDelegate.class).value(),103                                    SinceJUnit_4_5.runnerAlternativeConstructorParams(),104                                    new Object[] {105                                        testClass,106                                        SinceJUnit_4_5.newRunnerBuilder()107                                    });108                        } catch (ConstructorNotFoundException ignoredWorkAroundFailure) {109                        }110                    }111                    throw rootProblem;112                }113            }114        });115    }116    private static <T> T withContextClassLoader(117            ClassLoader loader, Callable<T> callable) throws Exception {118        final ClassLoader originalClassLoaderBackup =119                Thread.currentThread().getContextClassLoader();120        try {121            Thread.currentThread().setContextClassLoader(loader);122            return callable.call();123        } finally {124            Thread.currentThread().setContextClassLoader(originalClassLoaderBackup);125        }126    }127    @Override128    public void run(final RunNotifier notifier) {129        try {130            withContextClassLoader(testClassLoader, new Callable<Void>() {131                @Override132                public Void call() {133                    PowerMockRunNotifier powerNotifier = new PowerMockRunNotifier(134                            notifier, powerMockTestNotifier, testMethods);135                    try {136                        GlobalNotificationBuildSupport.prepareTestSuite(137                                testClassName, powerNotifier);138                        delegate.run(powerNotifier);139                    } finally {140                        GlobalNotificationBuildSupport141                                .closePendingTestSuites(powerNotifier);142                    }143                    return null;144                }...

withContextClassLoader

Using AI Code Generation

1public class ClassLoaderTest {2    public static void main(String[] args) {3        System.out.println("Current classloader: " + Thread.currentThread().getContextClassLoader());4        System.out.println("Current classloader: " + ClassLoaderTest.class.getClassLoader());5        System.out.println("Current classloader: " + ClassLoader.getSystemClassLoader());6    }7}8@RunWith(PowerMockRunner.class)9@PrepareForTest({ClassLoaderTest.class})10public class ClassLoaderTest {11    public static void main(String[] args) {12        System.out.println("Current classloader: " + Thread.currentThread().getContextClassLoader());13        System.out.println("Current classloader: " + ClassLoaderTest.class.getClassLoader());14        System.out.println("Current classloader: " + ClassLoader.getSystemClassLoader());15    }16}17@RunWith(PowerMockRunner.class)18@PowerMockRunnerDelegate(SpringRunner.class)19@PrepareForTest({ClassLoaderTest.class})20public class ClassLoaderTest {21    public static void main(String[] args) {22        System.out.println("Current classloader: " + Thread.currentThread().getContextClassLoader());23        System.out.println("Current classloader: " + ClassLoaderTest.class.getClassLoader());24        System.out.println("Current classloader: " + ClassLoader.getSystemClassLoader());25    }26}

withContextClassLoader

Using AI Code Generation

1import org.junit.runner.Description;2import org.junit.runner.notification.RunNotifier;3import org.junit.runners.BlockJUnit4ClassRunner;4import org.junit.runners.model.InitializationError;5import org.powermock.core.classloader.MockClassLoader;6public class CustomClassLoaderRunner extends BlockJUnit4ClassRunner {7    private final ClassLoader classLoader;8    public CustomClassLoaderRunner(Class<?> klass, ClassLoader classLoader) throws InitializationError {9        super(klass);10        this.classLoader = classLoader;11    }12    public void run(RunNotifier notifier) {13        try {14            MockClassLoader.setMockClassLoader(classLoader);15            super.run(notifier);16        } finally {17            MockClassLoader.setMockClassLoader(null);18        }19    }20    protected Description describeChild(Object child) {21        return Description.createTestDescription(getTestClass().getJavaClass(), getName());22    }23    protected String getName() {24        return String.format("[%s]", getTestClass().getName());25    }26    protected String testName(Description description) {27        return String.format("%s[%s]", description.getMethodName(), getTestClass().getName());28    }29    protected void validateConstructor(List<Throwable> errors) {30        validateOnlyOneConstructor(errors);31    }32    protected void validateFields(List<Throwable> errors) {33    }34}35@RunWith(CustomClassLoaderRunner.class)36@PowerMockRunnerDelegate(CustomClassLoaderRunner.class)37@PowerMockIgnore("javax.management.*")38public class TestClass {39    public void test() {40    }41}42Related posts: How to use PowerMockRunner with custom classloader (JDK 1.8) How to use PowerMockRunner with custom classloader (JDK 1.6) How to use PowerMockRunner with custom classloader (JDK 1.7) How to use PowerMockRunner with custom classloader (JDK 1.8) How to use PowerMockRunner with custom classloader (JDK 1.6) How to use PowerMockRunner with custom classloader (JDK 1.7) How to use PowerMockRunner

withContextClassLoader

Using AI Code Generation

1public class ClassLoaderTest {2    private static final String CLASS_NAME = "com.example.ClassToLoad";3    public void testLoadClass() throws Exception {4        final String classFilePath = getClass().getResource("/com/example/ClassToLoad.class").getFile();5        final File classFile = new File(classFilePath);6        final byte[] classFileBytes = Files.readAllBytes(classFile.toPath());7        final ClassLoader customClassLoader = new ClassLoader() {8            protected Class<?> findClass(final String name) throws ClassNotFoundException {9                if (CLASS_NAME.equals(name)) {10                    return defineClass(name, classFileBytes, 0, classFileBytes.length);11                }12                throw new ClassNotFoundException();13            }14        };15        final Class<?> loadedClass = customClassLoader.loadClass(CLASS_NAME);16        final Object instance = loadedClass.getConstructor().newInstance();17        final Method method = loadedClass.getMethod("get");18        final Object result = method.invoke(instance);19        assertEquals("Hello World", result);20    }21}

withContextClassLoader

Using AI Code Generation

1public class PowerMockRunnerWithClassLoader extends PowerMockRunner {2	public PowerMockRunnerWithClassLoader(Class<?> clazz) throws InitializationError {3		super(clazz);4	}5	protected void runChild(FrameworkMethod method, RunNotifier notifier) {6		ClassLoader classLoader = this.getClass().getClassLoader();7		DelegatingPowerMockRunner.setContextClassLoader(classLoader);8		try {9			super.runChild(method, notifier);10		} finally {11			DelegatingPowerMockRunner.setContextClassLoader(null);12		}13	}14}15public class PowerMockRunnerDelegateWithClassLoader extends PowerMockRunnerDelegate {16	public PowerMockRunnerDelegateWithClassLoader(Class<?> clazz) throws InitializationError {17		super(clazz);18	}19	protected void runChild(FrameworkMethod method, RunNotifier notifier) {20		ClassLoader classLoader = this.getClass().getClassLoader();21		DelegatingPowerMockRunner.setContextClassLoader(classLoader);22		try {23			super.runChild(method, notifier);24		} finally {25			DelegatingPowerMockRunner.setContextClassLoader(null);26		}27	}28}

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