Package io.blt.test.assertj

Class AnnotationAssertions

java.lang.Object
io.blt.test.assertj.AnnotationAssertions
public final class AnnotationAssertions extends Object
Assertion factory methods that allow testing the annotations of various types.

Each method is a static factory for an annotation specific assertion object i.e. each method returns ObjectAssert<T extends Annotation>.

e.g. 

 @Test
 void isAnnotatedAsTransactionalWithNoRollbackForException() {
     assertHasAnnotation(NotificationPublisher.class, Transactional.class)
             .extracting(Transactional::noRollbackFor)
             .isEqualTo(Exception.class);
 }

  • Method Details

    • assertHasAnnotation

      public static <T extends Annotation> org.assertj.core.api.ObjectAssert<T> assertHasAnnotation(Method method, Class<T> annotation)
      Asserts that a Method is annotated with a given annotation.

      If present, an assertion object is returned for the found annotation instance, else the test fails.

      e.g. 
      
 @Test
 void isAnnotatedAsTransactionalWithNoRollbackForException() throws Exception {
     var method = NotificationPublisher.class.getMethod("sendNotification");

     assertHasAnnotation(method, Transactional.class)
             .extracting(Transactional::noRollbackFor)
             .isEqualTo(Exception.class);
 }
      Type Parameters:
      T - type of Annotation
      Parameters:
      method - a Method to test for the presence of annotation
      annotation - the expected Annotation type
      Returns:
      an assertion object for the found annotation i.e. ObjectAssert<T extends Annotation>

    • assertHasAnnotation

      public static <T extends Annotation> org.assertj.core.api.ObjectAssert<T> assertHasAnnotation(Class<?> clazz, Class<T> annotation)
      Asserts that a Class is annotated with a given annotation.

      If present, an assertion object is returned for the found annotation instance, else the test fails.

      e.g. 
      
 @Test
 void isAnnotatedAsTransactionalWithNoRollbackForException() {
     assertHasAnnotation(NotificationPublisher.class, Transactional.class)
             .extracting(Transactional::noRollbackFor)
             .isEqualTo(Exception.class);
 }
      Type Parameters:
      T - type of Annotation
      Parameters:
      clazz - a Class to test for the presence of annotation
      annotation - the expected Annotation type
      Returns:
      an assertion object for the found annotation i.e. ObjectAssert<T extends Annotation>

    • assertHasAnnotation

      public static <T extends Annotation> org.assertj.core.api.ObjectAssert<T> assertHasAnnotation(Field field, Class<T> annotation)
      Asserts that a Field is annotated with a given annotation.

      If present, an assertion object is returned for the found annotation instance, else the test fails.

      e.g. 
      
 @Test
 void isAnnotatedAsDigitsWithFractionOfTwo() {
     var method = Invoice.class.getField("price");

     assertHasAnnotation(field, Digits.class)
             .extracting(Digits::fraction)
             .isEqualTo(2);
 }
      Type Parameters:
      T - type of Annotation
      Parameters:
      field - a Field to test for the presence of annotation
      annotation - the expected Annotation type
      Returns:
      an assertion object for the found annotation i.e. ObjectAssert<T extends Annotation>