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.C;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /**
   * Unit tests for {@link Presentation}.
   *
   * <p>See {@code PresentationPixelTest} for pixel tests testing {@link Presentation}.
   */
  @RunWith(AndroidJUnit4.class)
  public final class PresentationTest {
    @Test
    public void configure_noEdits_leavesFramesUnchanged() {
      int inputWidth = 200;
      int inputHeight = 150;
      Presentation presentation = Presentation.createForHeight(C.LENGTH_UNSET);
  
      Pair<Integer, Integer> outputSize = presentation.configure(inputWidth, inputHeight);
  
      assertThat(outputSize.first).isEqualTo(inputWidth);
      assertThat(outputSize.second).isEqualTo(inputHeight);
    }
  
    @Test
    public void configure_createForHeight_changesDimensions() {
      int inputWidth = 200;
      int inputHeight = 150;
      int requestedHeight = 300;
      Presentation presentation = Presentation.createForHeight(requestedHeight);
  
      Pair<Integer, Integer> outputSize = presentation.configure(inputWidth, inputHeight);
  
      assertThat(outputSize.first).isEqualTo(requestedHeight * inputWidth / inputHeight);
      assertThat(outputSize.second).isEqualTo(requestedHeight);
    }
  
    @Test
    public void configure_createForAspectRatio_changesDimensions() {
      int inputWidth = 300;
      int inputHeight = 200;
      float aspectRatio = 2f;
      Presentation presentation =
          Presentation.createForAspectRatio(aspectRatio, Presentation.LAYOUT_SCALE_TO_FIT);
  
      Pair<Integer, Integer> outputSize = presentation.configure(inputWidth, inputHeight);
  
      assertThat(outputSize.first).isEqualTo(Math.round(aspectRatio * inputHeight));
      assertThat(outputSize.second).isEqualTo(inputHeight);
    }
  
    @Test
    public void configure_createForWidthAndHeight_changesDimensions() {
      int inputWidth = 300;
      int inputHeight = 200;
      int requestedWidth = 100;
      int requestedHeight = 300;
      Presentation presentation =
          Presentation.createForWidthAndHeight(
              requestedWidth, requestedHeight, Presentation.LAYOUT_SCALE_TO_FIT);
  
      Pair<Integer, Integer> outputSize = presentation.configure(inputWidth, inputHeight);
  
      assertThat(outputSize.first).isEqualTo(requestedWidth);
      assertThat(outputSize.second).isEqualTo(requestedHeight);
    }
  }
  