Examples of org.springframework.test.AssertThrows

org.springframework.test.AssertThrows
class under test public class Foo { public void someBusinessLogic(String name) { if (name == null) { throw new IllegalArgumentException("The 'name' argument is required"); } // rest of business logic here... } } The test for the above bad argument path can be expressed using the {@link AssertThrows} class like so:
```
 public class FooTest { public void testSomeBusinessLogicBadArgumentPath() { new AssertThrows(IllegalArgumentException.class) { public void test() { new Foo().someBusinessLogic(null); } }.runTest(); } }
```
This will result in the test passing if the Foo.someBusinessLogic(..) method threw an {@link java.lang.IllegalArgumentException}; if it did not, the test would fail with the following message:
```
 "Must have thrown a [class java.lang.IllegalArgumentException]"
```
If the wrong type of {@link java.lang.Exception} was thrown, thetest will also fail, this time with a message similar to the following:
```
 "junit.framework.AssertionFailedError: Was expecting a [class java.lang.UnsupportedOperationException] to be thrown, but instead a [class java.lang.IllegalArgumentException] was thrown"
```
The test for the correct {@link java.lang.Exception} respects polymorphism,so you can test that any old {@link java.lang.Exception} is thrown like so:
```
 public class FooTest { public void testSomeBusinessLogicBadArgumentPath() { // any Exception will do... new AssertThrows(Exception.class) { public void test() { new Foo().someBusinessLogic(null); } }.runTest(); } }
```
Intended for use with JUnit 4 and TestNG (as of Spring 3.0). You might want to compare this class with the {@link junit.extensions.ExceptionTestCase} class. @author Rick Evans @author Juergen Hoeller @since 2.0 @deprecated favor use of JUnit 4's {@code @Test(expected=...)} support

    PropertyEditor urlEditor = new URLEditor();
    assertEquals("", urlEditor.getAsText());
  }


  public void testCtorWithNullResourceEditor() throws Exception {
    new AssertThrows(IllegalArgumentException.class) {
      public void test() throws Exception {
        new URLEditor(null);
      }
    }.runTest();
  }

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    mpv.addPropertyValue(new PropertyValue("serviceLocatorInterface", TestService2Locator.class));
    ctx.registerSingleton("factory3", ServiceLocatorFactoryBean.class, mpv);
    ctx.refresh();


    final TestServiceLocator factory = (TestServiceLocator) ctx.getBean("factory");
    new AssertThrows(NoSuchBeanDefinitionException.class, "Must fail on more than one matching type") {
      public void test() throws Exception {
        factory.getTestService();
      }
    }.runTest();


    final TestServiceLocator2 factory2 = (TestServiceLocator2) ctx.getBean("factory2");
    new AssertThrows(NoSuchBeanDefinitionException.class, "Must fail on more than one matching type") {
      public void test() throws Exception {
        factory2.getTestService(null);
      }
    }.runTest();
    final TestService2Locator factory3 = (TestService2Locator) ctx.getBean("factory3");
    new AssertThrows(NoSuchBeanDefinitionException.class, "Must fail on no matching types") {
      public void test() throws Exception {
        factory3.getTestService();
      }
    }.runTest();
  }

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    }
    catch (CustomServiceLocatorException2 expected) {
      assertTrue(expected.getCause() instanceof NoSuchBeanDefinitionException);
    }
    final TestService2Locator factory3 = (TestService2Locator) ctx.getBean("factory3");
    new AssertThrows(CustomServiceLocatorException3.class, "Must fail on no matching types") {
      public void test() throws Exception {
        factory3.getTestService();
      }
    }.runTest();
  }

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    final TestServiceLocator2 factory = (TestServiceLocator2) ctx.getBean("factory");
    TestService testBean = factory.getTestService(null);
    // now test with explicit id
    testBean = factory.getTestService("testService");
    // now verify failure on bad id
    new AssertThrows(NoSuchBeanDefinitionException.class, "Illegal operation allowed") {
      public void test() throws Exception {
        factory.getTestService("bogusTestService");
      }
    }.runTest();
  }

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    assertFalse(testBean3 instanceof ExtendedTestService);
    assertTrue(testBean4 instanceof ExtendedTestService);
  }


  public void testNoServiceLocatorInterfaceSupplied() throws Exception {
    new AssertThrows(IllegalArgumentException.class, "No serviceLocator interface supplied") {
      public void test() throws Exception {
        new ServiceLocatorFactoryBean().afterPropertiesSet();
      }
    }.runTest();
  }

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      }
    }.runTest();
  }


  public void testWhenServiceLocatorInterfaceIsNotAnInterfaceType() throws Exception {
    new AssertThrows(IllegalArgumentException.class, "Bad (non-interface-type) serviceLocator interface supplied") {
      public void test() throws Exception {
        ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();
        factory.setServiceLocatorInterface(getClass());
        factory.afterPropertiesSet();
      }

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      }
    }.runTest();
  }


  public void testWhenServiceLocatorExceptionClassToExceptionTypeWithOnlyNoArgCtor() throws Exception {
    new AssertThrows(IllegalArgumentException.class, "Bad (invalid-Exception-type) serviceLocatorException class supplied") {
      public void test() throws Exception {
        ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();
        factory.setServiceLocatorExceptionClass(ExceptionClassWithOnlyZeroArgCtor.class);
      }
    }.runTest();

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      }
    }.runTest();
  }


  public void testWhenServiceLocatorExceptionClassIsNotAnExceptionSubclass() throws Exception {
    new AssertThrows(IllegalArgumentException.class, "Bad (non-Exception-type) serviceLocatorException class supplied") {
      public void test() throws Exception {
        ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();
        factory.setServiceLocatorExceptionClass(getClass());
      }
    }.runTest();

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  public void testWhenServiceLocatorMethodCalledWithTooManyParameters() throws Exception {
    ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();
    factory.setServiceLocatorInterface(ServiceLocatorInterfaceWithExtraNonCompliantMethod.class);
    factory.afterPropertiesSet();
    final ServiceLocatorInterfaceWithExtraNonCompliantMethod locator = (ServiceLocatorInterfaceWithExtraNonCompliantMethod) factory.getObject();
    new AssertThrows(UnsupportedOperationException.class, "Bad method (too many args, doesn't obey class contract)") {
      public void test() throws Exception {
        locator.getTestService("not", "allowed");
      }
    }.runTest();
  }

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  public void testRequiresListableBeanFactoryAndChokesOnAnythingElse() throws Exception {
    MockControl mockBeanFactory = MockControl.createControl(BeanFactory.class);
    final BeanFactory beanFactory = (BeanFactory) mockBeanFactory.getMock();
    mockBeanFactory.replay();


    new AssertThrows(FatalBeanException.class) {
      public void test() throws Exception {
        ServiceLocatorFactoryBean factory = new ServiceLocatorFactoryBean();
        factory.setBeanFactory(beanFactory);
      }
    }.runTest();

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