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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package android.test.suitebuilder;
     18 
     19 import android.test.InstrumentationTestCase;
     20 import android.test.suitebuilder.annotation.Smoke;
     21 import android.test.suitebuilder.annotation.Suppress;
     22 import com.android.internal.util.Predicate;
     23 import java.lang.annotation.Annotation;
     24 
     25 /**
     26  * {@hide} Not needed for 1.0 SDK.
     27  */
     28 public class TestPredicates {
     29 
     30     static final Predicate<TestMethod> REJECT_INSTRUMENTATION =
     31             not(new AssignableFrom(InstrumentationTestCase.class));
     32 
     33     static final Predicate<TestMethod> SELECT_SMOKE = hasAnnotation(Smoke.class);
     34 
     35     static final Predicate<TestMethod> REJECT_SUPPRESSED = not(hasAnnotation(Suppress.class));
     36 
     37     /**
     38      * Return a predicate that checks to see if a {@link TestMethod} has an instance of the supplied
     39      * annotation class, either on the method or on the containing class.
     40      */
     41     public static Predicate<TestMethod> hasAnnotation(Class<? extends Annotation> annotationClass) {
     42         return new HasAnnotation(annotationClass);
     43     }
     44 
     45     private static class HasAnnotation implements Predicate<TestMethod> {
     46 
     47         private final Class<? extends Annotation> annotationClass;
     48 
     49         private HasAnnotation(Class<? extends Annotation> annotationClass) {
     50             this.annotationClass = annotationClass;
     51         }
     52 
     53         @Override
     54         public boolean apply(TestMethod testMethod) {
     55             return testMethod.getAnnotation(annotationClass) != null ||
     56                     testMethod.getEnclosingClass().getAnnotation(annotationClass) != null;
     57         }
     58     }
     59 
     60     /**
     61      * Returns a Predicate that evaluates to true iff the given Predicate
     62      * evaluates to false.
     63      */
     64     public static <T> Predicate<T> not(Predicate<? super T> predicate) {
     65         return new NotPredicate<T>(predicate);
     66     }
     67 
     68     private static class NotPredicate<T> implements Predicate<T> {
     69         private final Predicate<? super T> predicate;
     70 
     71         private NotPredicate(Predicate<? super T> predicate) {
     72             this.predicate = predicate;
     73         }
     74 
     75         public boolean apply(T t) {
     76             return !predicate.apply(t);
     77         }
     78     }
     79 }
     80