content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.beam.sdk.testing;
  
  import java.lang.annotation.Annotation;
  import java.util.Arrays;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Predicate;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.FluentIterable;
  import org.junit.experimental.categories.Category;
  
  /** A utility class for querying annotations. */
  @SuppressWarnings({
    "nullness" // TODO(https://github.com/apache/beam/issues/20497)
  })
  class Annotations {
  
    /** Annotation predicates. */
    static class Predicates {
  
      static Predicate<Annotation> isAnnotationOfType(final Class<? extends Annotation> clazz) {
        return annotation ->
            annotation.annotationType() != null && annotation.annotationType().equals(clazz);
      }
  
      static Predicate<Annotation> isCategoryOf(final Class<?> value, final boolean allowDerived) {
        return category ->
            FluentIterable.from(Arrays.asList(((Category) category).value()))
                .anyMatch(
                    aClass -> allowDerived ? value.isAssignableFrom(aClass) : value.equals(aClass));
      }
    }
  }
  