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enable
@AnalyzeClasses
annotation to be used as meta annotation
so far users are forced to repeat `@AnalyzeClasses` annotation an every test class. This cause additional maintenance overhead when common properties (e.g. package structure) changes. To support the DRY approach, `@AnalzyeClasses` annotation can now be used as meta annotation. Resolves: #182 Signed-off-by: Mathze <[email protected]>
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24 changes: 24 additions & 0 deletions
24
...ch/archunit/junit/internal/testexamples/TestClassWithMetaAnnotationForAnalyzeClasses.java
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package com.tngtech.archunit.junit.internal.testexamples; | ||
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import com.tngtech.archunit.junit.AnalyzeClasses; | ||
import com.tngtech.archunit.junit.ArchTest; | ||
import com.tngtech.archunit.lang.ArchRule; | ||
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import java.lang.annotation.Retention; | ||
import java.lang.annotation.Target; | ||
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import static java.lang.annotation.ElementType.TYPE; | ||
import static java.lang.annotation.RetentionPolicy.RUNTIME; | ||
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@TestClassWithMetaAnnotationForAnalyzeClasses.MetaAnalyzeCls | ||
public class TestClassWithMetaAnnotationForAnalyzeClasses { | ||
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@ArchTest | ||
public static final ArchRule rule_in_class_with_meta_analyze_class_annotation = RuleThatFails.on(UnwantedClass.class); | ||
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@Retention(RUNTIME) | ||
@Target(TYPE) | ||
@AnalyzeClasses(wholeClasspath = true) | ||
public @interface MetaAnalyzeCls { | ||
} | ||
} |
27 changes: 27 additions & 0 deletions
27
...unit/internal/testexamples/wrong/WrongTestClassWithMultipleAnalyzeClassesAnnotations.java
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package com.tngtech.archunit.junit.internal.testexamples.wrong; | ||
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import java.lang.annotation.Retention; | ||
import java.lang.annotation.Target; | ||
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import com.tngtech.archunit.junit.AnalyzeClasses; | ||
import com.tngtech.archunit.junit.ArchTest; | ||
import com.tngtech.archunit.junit.internal.testexamples.RuleThatFails; | ||
import com.tngtech.archunit.junit.internal.testexamples.UnwantedClass; | ||
import com.tngtech.archunit.lang.ArchRule; | ||
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import static java.lang.annotation.ElementType.TYPE; | ||
import static java.lang.annotation.RetentionPolicy.RUNTIME; | ||
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@AnalyzeClasses(packages = "dummy") | ||
@WrongTestClassWithMultipleAnalyzeClassesAnnotations.MetaAnalyzeCls | ||
public class WrongTestClassWithMultipleAnalyzeClassesAnnotations { | ||
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@ArchTest | ||
public static final ArchRule dummy_rule = RuleThatFails.on(UnwantedClass.class); | ||
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@Retention(RUNTIME) | ||
@Target(TYPE) | ||
@AnalyzeClasses(wholeClasspath = true) | ||
public @interface MetaAnalyzeCls { | ||
} | ||
} |
42 changes: 42 additions & 0 deletions
42
archunit-junit/src/main/java/com/tngtech/archunit/junit/internal/AnnotationFinder.java
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package com.tngtech.archunit.junit.internal; | ||
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import java.lang.annotation.Annotation; | ||
import java.util.HashSet; | ||
import java.util.LinkedList; | ||
import java.util.List; | ||
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class AnnotationFinder<T extends Annotation> { | ||
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private final Class<T> annotationClass; | ||
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public AnnotationFinder(final Class<T> annotationClass) { | ||
this.annotationClass = annotationClass; | ||
} | ||
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/** | ||
* Recursively retrieve all {@link T} annotations from a given element. | ||
* | ||
* @param clazz The clazz from which to retrieve the annotation. | ||
* @return List of all found annotation instance or empty list. | ||
*/ | ||
public List<T> findAnnotationsOn(final Class<?> clazz) { | ||
return findAnnotations(clazz.getAnnotations(), new HashSet<>()); | ||
} | ||
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private List<T> findAnnotations(final Annotation[] annotations, final HashSet<Annotation> visited) { | ||
final List<T> result = new LinkedList<>(); | ||
for (Annotation annotation : annotations) { | ||
if (visited.contains(annotation)) { | ||
continue; | ||
} else { | ||
visited.add(annotation); | ||
} | ||
if (annotationClass.isInstance(annotation)) { | ||
result.add(annotationClass.cast(annotation)); | ||
} else { | ||
result.addAll(findAnnotations(annotation.annotationType().getAnnotations(), visited)); | ||
} | ||
} | ||
return result; | ||
} | ||
} |
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