content: /*
   * Copyright 2022 The Android Open Source Project
   *
   * 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.exoplayer2.effect;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import android.util.Pair;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.util.GlUtil;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /**
   * Unit tests for {@link Crop}.
   *
   * <p>See {@code CropPixelTest} for pixel tests testing {@link Crop}.
   */
  @RunWith(AndroidJUnit4.class)
  public final class CropTest {
    @Test
    public void configure_noEdits_leavesFramesUnchanged() {
      int inputWidth = 200;
      int inputHeight = 150;
      Crop crop = new Crop(/* left= */ -1, /* right= */ 1, /* bottom= */ -1, /* top= */ 1);
  
      Pair<Integer, Integer> outputSize = crop.configure(inputWidth, inputHeight);
  
      assertThat(outputSize.first).isEqualTo(inputWidth);
      assertThat(outputSize.second).isEqualTo(inputHeight);
    }
  
    @Test
    public void configure_setCrop_changesDimensions() {
      int inputWidth = 300;
      int inputHeight = 200;
      float left = -.5f;
      float right = .5f;
      float bottom = .5f;
      float top = 1f;
      Crop crop = new Crop(left, right, bottom, top);
  
      Pair<Integer, Integer> outputSize = crop.configure(inputWidth, inputHeight);
  
      int expectedPostCropWidth = Math.round(inputWidth * (right - left) / GlUtil.LENGTH_NDC);
      int expectedPostCropHeight = Math.round(inputHeight * (top - bottom) / GlUtil.LENGTH_NDC);
      assertThat(outputSize.first).isEqualTo(expectedPostCropWidth);
      assertThat(outputSize.second).isEqualTo(expectedPostCropHeight);
    }
  }
  