* <p>This case has been added with
* <a href="https://github.com/junit-team/junit/issues/1019">Issue #1019</a>
*/
@Test
public void rejectClassRuleMethodReturnsAnArbitraryObject() throws Exception {
TestClass target = new TestClass(TestWithClassRuleMethodReturnsAnArbitraryObject.class);
CLASS_RULE_METHOD_VALIDATOR.validate(target, errors);
assertOneErrorWithMessage("The @ClassRule 'arbitraryObject' must return an implementation of TestRule.");
}