content: /*
   * Copyright 2021 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.ui;
  
  import static com.google.common.truth.Truth.assertThat;
  
  import android.content.res.Resources;
  import androidx.test.core.app.ApplicationProvider;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import com.google.android.exoplayer2.Format;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Tests for the {@link DefaultMediaDescriptionAdapter}. */
  @RunWith(AndroidJUnit4.class)
  public class DefaultTrackNameProviderTest {
  
    @Test
    public void getTrackName_handlesInvalidLanguage() {
      Resources resources = ApplicationProvider.getApplicationContext().getResources();
      DefaultTrackNameProvider provider = new DefaultTrackNameProvider(resources);
      Format format = new Format.Builder().setLanguage("```").build();
  
      String name = provider.getTrackName(format);
  
      assertThat(name).isEqualTo(resources.getString(R.string.exo_track_unknown));
    }
  }
  