content: /*
   * Copyright 2020 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.util;
  
  import static com.google.android.exoplayer2.util.FileTypes.HEADER_CONTENT_TYPE;
  import static com.google.android.exoplayer2.util.FileTypes.inferFileTypeFromMimeType;
  import static com.google.android.exoplayer2.util.FileTypes.inferFileTypeFromUri;
  import static com.google.common.truth.Truth.assertThat;
  
  import android.net.Uri;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  /** Tests for {@link FileTypesTest}. */
  @RunWith(AndroidJUnit4.class)
  public class FileTypesTest {
  
    @Test
    public void inferFileFormat_fromResponseHeaders_returnsExpectedFormat() {
      Map<String, List<String>> responseHeaders = new HashMap<>();
      responseHeaders.put(HEADER_CONTENT_TYPE, Collections.singletonList(MimeTypes.VIDEO_MP4));
  
      assertThat(FileTypes.inferFileTypeFromResponseHeaders(responseHeaders))
          .isEqualTo(FileTypes.MP4);
    }
  
    @Test
    public void inferFileFormat_fromResponseHeadersWithUnknownContentType_returnsUnknownFormat() {
      Map<String, List<String>> responseHeaders = new HashMap<>();
      responseHeaders.put(HEADER_CONTENT_TYPE, Collections.singletonList("unknown"));
  
      assertThat(FileTypes.inferFileTypeFromResponseHeaders(responseHeaders))
          .isEqualTo(FileTypes.UNKNOWN);
    }
  
    @Test
    public void inferFileFormat_fromResponseHeadersWithoutContentType_returnsUnknownFormat() {
      assertThat(FileTypes.inferFileTypeFromResponseHeaders(new HashMap<>()))
          .isEqualTo(FileTypes.UNKNOWN);
    }
  
    @Test
    public void inferFileFormat_fromMimeType_returnsExpectedFormat() {
      assertThat(FileTypes.inferFileTypeFromMimeType("audio/x-flac")).isEqualTo(FileTypes.FLAC);
    }
  
    @Test
    public void inferFileFormat_fromUnknownMimeType_returnsUnknownFormat() {
      assertThat(inferFileTypeFromMimeType(/* mimeType= */ "unknown")).isEqualTo(FileTypes.UNKNOWN);
    }
  
    @Test
    public void inferFileFormat_fromNullMimeType_returnsUnknownFormat() {
      assertThat(inferFileTypeFromMimeType(/* mimeType= */ null)).isEqualTo(FileTypes.UNKNOWN);
    }
  
    @Test
    public void inferFileFormat_fromUri_returnsExpectedFormat() {
      assertThat(
              inferFileTypeFromUri(
                  Uri.parse("http://www.example.com/filename.mp3?query=myquery#fragment")))
          .isEqualTo(FileTypes.MP3);
    }
  
    @Test
    public void inferFileFormat_fromUriWithExtensionPrefix_returnsExpectedFormat() {
      assertThat(inferFileTypeFromUri(Uri.parse("filename.mka"))).isEqualTo(FileTypes.MATROSKA);
    }
  
    @Test
    public void inferFileFormat_fromUriWithUnknownExtension_returnsUnknownFormat() {
      assertThat(inferFileTypeFromUri(Uri.parse("filename.unknown"))).isEqualTo(FileTypes.UNKNOWN);
    }
  
    @Test
    public void inferFileFormat_fromEmptyUri_returnsUnknownFormat() {
      assertThat(inferFileTypeFromUri(Uri.EMPTY)).isEqualTo(FileTypes.UNKNOWN);
    }
  }
  