VRaptor MockValidator

assert-used.java

@Test
public void shouldRedirectIfInvalid() {
	ModelImpl model = new ModelImpl();
	model.setId(1L);
	controller.update(model);
	
	assertThat(validator.used(), equalTo(true));
}

custom-mock-used.java

class CustomMockValidator extends MockValidator {
	private javax.validation.Validator bvalidator;
	private boolean enabled = true;
	private boolean used;

	public CustomMockValidator() {
		bvalidator = Validation.buildDefaultValidatorFactory().getValidator();
	}
	
	@Override
	public Validator validate(Object object, Class<?>... groups) {
		if(enabled) {
			addAll(bvalidator.validate(object, groups));
		}
		return this;
	}
	
	@Override
	public <T extends View> T onErrorUse(Class<T> view) {
		if(hasErrors()) {
			used = true;
		}
		return new MockResult().use(view);
	}
	
	public boolean used() {
		return used;
	}
	
	public Validator disableValidation() {
		enabled = false;
		return this;
	}
}

CustomMockValidator.java

public class CustomMockValidator extends MockValidator {
	private javax.validation.Validator bvalidator;
	private boolean enabled = true;

	public CustomMockValidator() {
		bvalidator = Validation.buildDefaultValidatorFactory().getValidator();
	}
	
	@Override
	public Validator validate(Object object, Class<?>... groups) {
		if(enabled) {
			addAll(bvalidator.validate(object, groups));
		}
		return this;
	}
	
	@Override
	public <T extends View> T onErrorUse(Class<T> view) {
		if(hasErrors()) {
			throw new ValidationException();
		}
		return new MockResult().use(view);
	}
	
	public Validator disableValidation() {
		enabled = false;
		return this;
	}
}

padrao-vraptor.java

//não preciso testar porque o vraptor faz pra mim
public Model create(@NotNull @Valid Model model)  {
        validator().onErrorRedirectTo(this).add();
 	return em.merge(model);
}

teste-com-o-custommock.java

@Test(expected = ValidationException.class)
public void shouldBeInvalid() {
	Model model = new Model();
	model.setId(1L);
	
	controller.update(model);
}

usando-metodo-validate.java

//não tem como testar se ocorreu erro
public Model create(Model model)  {
        validator.validate(model);
        validator.onErrorRedirectTo(this).add();
 	return em.merge(model);
}