How to use Interface TestValidator class of org.junit.validator package

Best junit code snippet using org.junit.validator.Interface TestValidator

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Source: Test custom constraint annotations with JUnit 5 ...

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1@Target(ElementType.FIELD)
2@Retention(RetentionPolicy.RUNTIME)
3@Constraint(validatedBy = MyValidator.class)
4public @interface MyAnnotation {
5    String message() default "Invalid value (it must be foo)";
6    Class<?>[] groups() default {};
7    Class<? extends Payload>[] payload() default {};
8
9}
10
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Source: Test custom constraint annotations with JUnit 5 ...

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = MyValidator.class)
public @interface MyAnnotation {
    String message() default "Invalid value (it must be foo)";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};

}

Source: Test custom constraint annotations with JUnit 5 ...

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1public class MyValidator implements ConstraintValidator<MyAnnotation, String> {
2    @Override
3    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
4        if (null == s) return true;
5        return "foo".equalsIgnoreCase(s);
6    }
7}
8
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Source: Test custom constraint annotations with JUnit 5 ...

public class MyValidator implements ConstraintValidator<MyAnnotation, String> {
    @Override
    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
        if (null == s) return true;
        return "foo".equalsIgnoreCase(s);
    }
}

Source: Test custom constraint annotations with JUnit 5 ...

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1@TestInstance(TestInstance.Lifecycle.PER_CLASS)
2public class MyValidatorTest {
3
4    private Validator validator;
5
6    @BeforeAll
7    void init() {
8        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
9        validator = factory.getValidator();
10    }
11
12    private static class TestObject {
13
14        @MyAnnotation
15        private String testField;
16
17        TestObject() {
18            this(null);
19        }
20
21        TestObject(String value) {
22            testField = value;
23        }
24
25        public String getTestField() {
26            return testField;
27        }
28
29        public void setTestField(String testField) {
30            this.testField = testField;
31        }
32    }
33
34    @Test
35    void shouldValidForNullValue() {
36        var obj = new TestObject();
37        var violations = validator.validate(obj); // Set<ConstraintViolation<TestObject>>
38        Assertions.assertTrue(violations.isEmpty(), String.format("Object should valid, but has %d violations", violations.size()));
39    }
40
41    @Test
42    void shouldValidForFooValue() {
43        var obj = new TestObject("foo");
44        var violations = validator.validate(obj); // Set<ConstraintViolation<TestObject>>
45        Assertions.assertTrue(violations.isEmpty(), String.format("Object should valid, but has %d violations", violations.size()));
46    }
47
48    @Test
49    void shouldInvalidForBarValue() {
50        var obj = new TestObject("bar");
51        var violations = validator.validate(obj); // Set<ConstraintViolation<TestObject>>
52        Assertions.assertEquals(1, violations.size());
53    }
54}
55
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Source: Test custom constraint annotations with JUnit 5 ...

@TestInstance(TestInstance.Lifecycle.PER_CLASS)
public class MyValidatorTest {

    private Validator validator;

    @BeforeAll
    void init() {
        ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
        validator = factory.getValidator();
    }

    private static class TestObject {

        @MyAnnotation
        private String testField;

        TestObject() {
            this(null);
        }

        TestObject(String value) {
            testField = value;
        }

        public String getTestField() {
            return testField;
        }

        public void setTestField(String testField) {
            this.testField = testField;
        }
    }

    @Test
    void shouldValidForNullValue() {
        var obj = new TestObject();
        var violations = validator.validate(obj); // Set<ConstraintViolation<TestObject>>
        Assertions.assertTrue(violations.isEmpty(), String.format("Object should valid, but has %d violations", violations.size()));
    }

    @Test
    void shouldValidForFooValue() {
        var obj = new TestObject("foo");
        var violations = validator.validate(obj); // Set<ConstraintViolation<TestObject>>
        Assertions.assertTrue(violations.isEmpty(), String.format("Object should valid, but has %d violations", violations.size()));
    }

    @Test
    void shouldInvalidForBarValue() {
        var obj = new TestObject("bar");
        var violations = validator.validate(obj); // Set<ConstraintViolation<TestObject>>
        Assertions.assertEquals(1, violations.size());
    }
}

Source: Test custom constraint annotations with JUnit 5 ...

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1@Target(ElementType.FIELD)
2@Retention(RetentionPolicy.RUNTIME)
3@Constraint(validatedBy = MyHasAttributesValidator.class)
4public @interface MyAnnotationHasAttributes {
5    String message() default "Invalid value (it must be foo)";
6    Class<?>[] groups() default {};
7    Class<? extends Payload>[] payload() default {};
8
9    int attributeOne() default 10;
10    int attributeTwo() default 20;
11
12}
13
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Source: Test custom constraint annotations with JUnit 5 ...

@Target(ElementType.FIELD)
@Retention(RetentionPolicy.RUNTIME)
@Constraint(validatedBy = MyHasAttributesValidator.class)
public @interface MyAnnotationHasAttributes {
    String message() default "Invalid value (it must be foo)";
    Class<?>[] groups() default {};
    Class<? extends Payload>[] payload() default {};

    int attributeOne() default 10;
    int attributeTwo() default 20;

}

Source: Test custom constraint annotations with JUnit 5 ...

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1public class MyHasAttributesValidator implements ConstraintValidator<MyAnnotationHasAttributes, String> {
2    private MyAnnotationHasAttributes ann;
3
4    @Override
5    public void initialize(MyAnnotationHasAttributes constraintAnnotation) {
6        ann = constraintAnnotation;
7    }
8
9    @Override
10    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
11        if (null == s) return true;
12        return s.length() >= ann.attributeOne() && s.length() < ann.attributeTwo();
13    }
14}
15
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Source: Test custom constraint annotations with JUnit 5 ...

public class MyHasAttributesValidator implements ConstraintValidator<MyAnnotationHasAttributes, String> {
    private MyAnnotationHasAttributes ann;

    @Override
    public void initialize(MyAnnotationHasAttributes constraintAnnotation) {
        ann = constraintAnnotation;
    }

    @Override
    public boolean isValid(String s, ConstraintValidatorContext constraintValidatorContext) {
        if (null == s) return true;
        return s.length() >= ann.attributeOne() && s.length() < ann.attributeTwo();
    }
}

Source: Test custom constraint annotations with JUnit 5 ...

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1public class HasAttributeValidatorTest {
2
3    private MyAnnotationHasAttributes createAnnotation(Integer one, Integer two) {
4        final Map<String, Object> attrs = new HashMap<>();
5        if (null != one) {
6            attrs.put("attributeOne", one);
7        }
8        if (null != two) {
9            attrs.put("attributeOne", two);
10        }
11        var desc = new AnnotationDescriptor.Builder<>(MyAnnotationHasAttributes.class, attrs).build();
12        return AnnotationFactory.create(desc);
13    }
14
15    @ParameterizedTest
16    @MethodSource("provideValues")
17    void testValidator(Integer one, Integer two, String input, boolean expected) {
18        MyAnnotationHasAttributes ann = createAnnotation(one, two);
19        MyHasAttributesValidator validator = new MyHasAttributesValidator();
20        validator.initialize(ann);
21        var result = validator.isValid(input, null);
22        Assertions.assertEquals(expected, result, String.format("Validation must be %s but found: %s with params: %d, %d, %s", expected, result, one, two, input));
23    }
24
25    private static Stream<Arguments> provideValues() {
26        return Stream.of(
27                Arguments.of(null, null, null, true),
28                Arguments.of(null, 20, "foo", true),
29                Arguments.of(null, null, RandomStringUtils.randomAlphabetic(30), false)
30        );
31    }
32}
33
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Source: Test custom constraint annotations with JUnit 5 ...

public class HasAttributeValidatorTest {

    private MyAnnotationHasAttributes createAnnotation(Integer one, Integer two) {
        final Map<String, Object> attrs = new HashMap<>();
        if (null != one) {
            attrs.put("attributeOne", one);
        }
        if (null != two) {
            attrs.put("attributeOne", two);
        }
        var desc = new AnnotationDescriptor.Builder<>(MyAnnotationHasAttributes.class, attrs).build();
        return AnnotationFactory.create(desc);
    }

    @ParameterizedTest
    @MethodSource("provideValues")
    void testValidator(Integer one, Integer two, String input, boolean expected) {
        MyAnnotationHasAttributes ann = createAnnotation(one, two);
        MyHasAttributesValidator validator = new MyHasAttributesValidator();
        validator.initialize(ann);
        var result = validator.isValid(input, null);
        Assertions.assertEquals(expected, result, String.format("Validation must be %s but found: %s with params: %d, %d, %s", expected, result, one, two, input));
    }

    private static Stream<Arguments> provideValues() {
        return Stream.of(
                Arguments.of(null, null, null, true),
                Arguments.of(null, 20, "foo", true),
                Arguments.of(null, null, RandomStringUtils.randomAlphabetic(30), false)
        );
    }
}

Source: oval custom method validation - Pre condition ...

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1@Override
2public ProductGetResponse getProductBulk(@TestValidator ProductGetKey productGetKey) throws ItemWrapperApiException
3
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Source: oval custom method validation - Pre condition ...

@Override
public ProductGetResponse getProductBulk(@TestValidator ProductGetKey productGetKey) throws ItemWrapperApiException

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