1 package org.junit.validator;
2
3 import org.junit.Rule;
4 import org.junit.Test;
5 import org.junit.rules.ExpectedException;
6
7 import java.lang.annotation.Annotation;
8
9 import static org.hamcrest.core.Is.is;
10 import static org.hamcrest.core.IsInstanceOf.instanceOf;
11 import static org.junit.Assert.assertThat;
12
13 public class AnnotationValidatorFactoryTest {
14
15 @Rule
16 public ExpectedException exception = ExpectedException.none();
17
18 @Test
19 public void createAnnotationValidator() {
20 ValidateWith validateWith = SampleTestWithValidator.class.getAnnotation(ValidateWith.class);
21 AnnotationValidator annotationValidator = new AnnotationValidatorFactory().createAnnotationValidator(validateWith);
22 assertThat(annotationValidator, is(instanceOf(Validator.class)));
23 }
24
25 @Test
26 public void exceptionWhenAnnotationWithNullClassIsPassedIn() {
27 exception.expect(IllegalArgumentException.class);
28 exception.expectMessage("Can't create validator, value is null in " +
29 "annotation org.junit.validator.AnnotationValidatorFactoryTest$ValidatorWithNullValue");
30
31 new AnnotationValidatorFactory().createAnnotationValidator(new ValidatorWithNullValue());
32 }
33
34
35 public static class ValidatorWithNullValue implements ValidateWith {
36 public Class<? extends AnnotationValidator> value() {
37 return null;
38 }
39
40 public Class<? extends Annotation> annotationType() {
41 return ValidateWith.class;
42 }
43 }
44
45 @ValidateWith(value = Validator.class)
46 public static class SampleTestWithValidator {
47 }
48
49 public static class Validator extends AnnotationValidator {
50 }
51
52 @Test
53 public void exceptionWhenAnnotationValidatorCantBeCreated() {
54 ValidateWith validateWith = SampleTestWithValidatorThatThrowsException.class.getAnnotation(ValidateWith.class);
55 exception.expect(RuntimeException.class);
56 exception.expectMessage("Exception received when creating AnnotationValidator class " +
57 "org.junit.validator.AnnotationValidatorFactoryTest$ValidatorThatThrowsException");
58 new AnnotationValidatorFactory().createAnnotationValidator(validateWith);
59 }
60
61 @ValidateWith(value = ValidatorThatThrowsException.class)
62 public static class SampleTestWithValidatorThatThrowsException {
63 }
64
65 public static class ValidatorThatThrowsException extends AnnotationValidator {
66 public ValidatorThatThrowsException() throws InstantiationException {
67 throw new InstantiationException("Simulating exception in test");
68 }
69 }
70 }