Java 类org.junit.internal.runners.MethodValidator 实例源码

@SuppressWarnings("unchecked")
@Override
public void validateInstanceMethods() {
    validateTestMethods(After.class, false);
    validateTestMethods(Before.class, false);
    validateTestMethods(Test.class, false);

    TestClass testClass = (TestClass) Whitebox.getInternalState(this, "fTestClass", MethodValidator.class);
    Class<?> classUnderTest = (Class<?>) Whitebox.getInternalState(testClass, "fClass");
    List<Throwable> fErrors = (List<Throwable>) Whitebox.getInternalState(this, "fErrors", MethodValidator.class);

    List<Method> methods = getTestMethods(testClass, classUnderTest);
    if (methods.size() == 0)
        fErrors.add(new Exception("No runnable methods"));
}

/**
 * This is a rip-off of the
 * {@link MethodValidator#validateInstanceMethods()} with the exception that
 * this method also searches for test methods if the class extends
 * {@link TestCase} and has methods that starts with test which are not
 * annotated.
 */
@SuppressWarnings("unchecked")
private void validateTestMethods(Class<? extends Annotation> annotation, boolean isStatic) {
    TestClass testClass = (TestClass) Whitebox.getInternalState(this, "fTestClass", MethodValidator.class);
    Class<?> classUnderTest = (Class<?>) Whitebox.getInternalState(testClass, "fClass");
    final List<Method> methods;
    if (TestCase.class.equals(classUnderTest.getSuperclass()) && !isStatic) {
        methods = getTestMethodsWithNoAnnotation(classUnderTest);
    } else {
        methods = testClass.getAnnotatedMethods(annotation);
    }

    List<Throwable> fErrors = (List<Throwable>) Whitebox.getInternalState(this, "fErrors", MethodValidator.class);
    for (Method each : methods) {
        if (Modifier.isStatic(each.getModifiers()) != isStatic) {
            String state = isStatic ? "should" : "should not";
            fErrors.add(new Exception("Method " + each.getName() + "() " + state + " be static"));
        }
        if (!Modifier.isPublic(each.getDeclaringClass().getModifiers()))
            fErrors.add(new Exception("Class " + each.getDeclaringClass().getName() + " should be public"));
        if (!Modifier.isPublic(each.getModifiers()))
            fErrors.add(new Exception("Method " + each.getName() + " should be public"));
        if (each.getReturnType() != Void.TYPE)
            fErrors.add(new Exception("Method " + each.getName() + " should be void"));
        if (each.getParameterTypes().length != 0)
            fErrors.add(new Exception("Method " + each.getName() + " should have no parameters"));
    }
}

protected void validate() throws InitializationError {
    MethodValidator methodValidator = new MethodValidator(fTestClass);
    methodValidator.validateMethodsForDefaultRunner();
    methodValidator.assertValid();
}