src/main/java/com/google/android/libraries/feed/common/testing/RequiredConsumer.java

// Copyright 2018 The Feed Authors.
//
// Licensed 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 com.google.android.libraries.feed.common.testing;

import com.google.android.libraries.feed.common.functional.Consumer;

/** Test helper class that ensures that the asynchronous consumer is called. */
public class RequiredConsumer<T> implements Consumer<T> {

  private final Consumer<T> consumer;
  private boolean isCalled = false;

  public RequiredConsumer(Consumer<T> consumer) {
    this.consumer = consumer;
  }

  @Override
  public void accept(T input) {
    isCalled = true;
    consumer.accept(input);
  }

  public boolean isCalled() {
    return isCalled;
  }
}