Examples of org.powermock.classloading.ClassloaderExecutor

org.powermock.classloading.ClassloaderExecutor
A ClassLoaderExecutor can run any code in any classloader. E.g. assume you have a classloader called myClassloader and you want to execute a (void) method called myMethod in myObject using this CL:
```
 ClassloaderExecutor cle = new ClassloaderExecutor(myClassloader); cle.execute(new Runnable() { public void run() { myObject.myMethod(); } }); 
```
What happens is that the entire object graph of myObject is deep-cloned into the myClassloader classloader and then the myObject.myMethod() is executed.
You can also execute methods that return something:
```
 ClassloaderExecutor cle = new ClassloaderExecutor(myClassloader); MyResult result = cle.execute(new Callable() { public MyResult call() throws Exception { return myObject.myMethod(); } }); 
```
Here we imagine that myObject.myMethod() returns an object of type MyResult. Again the entire state will be deep-cloned to myClassloader and then the myObject.myMethod() is executed. The result of the method call is deep-cloned back into the original classloader (the one that made the call to cle.execute(..)) and is ready for use.

Note that the ClassloaderExecutor requires a deep cloner implementing the {@link DeepClonerSPI} present in the class-path.

    assertSame(tested.getMyArgument1(), tested.getMyArgument2());
    assertEquals(tested.getMyArgument1(), tested.getMyArgument3());
    assertSame(tested.getMyArgument3(), MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);
    assertNotSame(MyReferenceFieldHolder.MY_ARGUMENT, MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);
    assertEquals(MyReferenceFieldHolder.MY_ARGUMENT, MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);
    new ClassloaderExecutor(classloader).execute(new Runnable() {
      public void run() {
        assertEquals(MockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());
        assertSame(tested.getMyArgument1(), tested.getMyArgument2());
        assertEquals(tested.getMyArgument1(), tested.getMyArgument3());
        assertSame(tested.getMyArgument3(), MyHierarchicalOverloadedFieldHolder.MY_ARGUMENT);

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    final MockClassLoader classloader = createClassloader();
    final MyArgument myArgument = new MyArgument("test");
    final MyReturnValue instance = new MyReturnValue(myArgument);
    Method method = instance.getClass().getMethod("getMyArgument");
    final ReflectionMethodInvoker tested = new ReflectionMethodInvoker(method, instance);
    new ClassloaderExecutor(classloader).execute(new Runnable() {
      public void run() {
        Object invoke = tested.invoke();
        assertSame(invoke, myArgument);
      }
    });

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  public void loadsObjectGraphInSpecifiedClassloaderAndReturnsResultInOriginalClassloader() throws Exception {
    MockClassLoader classloader = createClassloader();
    final MyReturnValue expectedConstructorValue = new MyReturnValue(new MyArgument("first value"));
    final MyClass myClass = new MyClass(expectedConstructorValue);
    final MyArgument expected = new MyArgument("A value");
    MyReturnValue[] actual = new ClassloaderExecutor(classloader).execute(new Callable<MyReturnValue[]>() {
      public MyReturnValue[] call() throws Exception {
        assertEquals(MockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());
        return myClass.myMethod(expected);
      }
    });

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  public void loadsObjectGraphThatIncludesPrimitiveValuesInSpecifiedClassloaderAndReturnsResultInOriginalClassloader()
      throws Exception {
    MockClassLoader classloader = createClassloader();
    final Integer expected = 42;
    final MyIntegerHolder myClass = new MyIntegerHolder(expected);
    Integer actual = new ClassloaderExecutor(classloader).execute(new Callable<Integer>() {
      public Integer call() throws Exception {
        assertEquals(MockClassLoader.class.getName(), this.getClass().getClassLoader().getClass().getName());
        final int myInteger = myClass.getMyInteger();
        assertEquals((int) expected, myInteger);
        return myInteger;

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        mockLoader.addIgnorePackage(ignorePackagesExtractor.getPackagesToIgnore(testClass));
        mockLoader.addClassesToModify(testClassesExtractor.getTestClasses(testClass));
        mockLoader.addClassesToModify(staticInitializationExtractor.getTestClasses(testClass));
        registerProxyframework(mockLoader);
        new MockPolicyInitializerImpl(testClass).initialize(mockLoader);
        return new ClassloaderExecutor(mockLoader);
    }

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Related Classes of org.powermock.classloading.ClassloaderExecutor

org.powermock.classloading.spi.DeepClonerSPI

org.powermock.modules.junit4.rule.PowerMockClassloaderExecutor

powermock.classloading.ObjenesisClassloaderExecutorTest

powermock.classloading.XStreamClassloaderExecutorTest

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