text: /** @license
   * Copyright 2016 Google LLC
   * SPDX-License-Identifier: Apache-2.0
   */
  
  describe('DashParser SegmentTemplate', () => {
    const Dash = shaka.test.Dash;
    const ManifestParser = shaka.test.ManifestParser;
    const baseUri = 'http://example.com/';
    const mp4IndexSegmentUri = '/base/test/test/assets/index-segment.mp4';
    const webmIndexSegmentUri = '/base/test/test/assets/index-segment.webm';
    const webmInitSegmentUri = '/base/test/test/assets/init-segment.webm';
  
    /** @type {!shaka.test.FakeNetworkingEngine} */
    let fakeNetEngine;
    /** @type {!shaka.dash.DashParser} */
    let parser;
    /** @type {shaka.extern.ManifestParser.PlayerInterface} */
    let playerInterface;
    /** @type {!ArrayBuffer} */
    let mp4Index;
    /** @type {!ArrayBuffer} */
    let webmIndex;
    /** @type {!ArrayBuffer} */
    let webmInit;
  
    beforeAll(async () => {
      mp4Index = await shaka.test.Util.fetch(mp4IndexSegmentUri);
      webmIndex = await shaka.test.Util.fetch(webmIndexSegmentUri);
      webmInit = await shaka.test.Util.fetch(webmInitSegmentUri);
    });
  
    beforeEach(() => {
      fakeNetEngine = new shaka.test.FakeNetworkingEngine();
      parser = shaka.test.Dash.makeDashParser();
  
      playerInterface = {
        networkingEngine: fakeNetEngine,
        filter: (manifest) => {},
        onTimelineRegionAdded: fail,  // Should not have any EventStream elements.
        onEvent: fail,
        onError: fail,
      };
    });
  
    shaka.test.Dash.makeTimelineTests(
        'SegmentTemplate', 'media="s$Number$.mp4"', []);
  
    describe('duration', () => {
      it('basic support', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1" media="s$Number$.mp4"',
          '  duration="10" />',
        ], /* duration= */ 60);
        const references = [
          ManifestParser.makeReference('s1.mp4', 0, 10, baseUri),
          ManifestParser.makeReference('s2.mp4', 10, 20, baseUri),
          ManifestParser.makeReference('s3.mp4', 20, 30, baseUri),
          ManifestParser.makeReference('s4.mp4', 30, 40, baseUri),
          ManifestParser.makeReference('s5.mp4', 40, 50, baseUri),
          ManifestParser.makeReference('s6.mp4', 50, 60, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('with @startNumber > 1', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="10" media="s$Number$.mp4"',
          '   duration="10" />',
        ], /* duration= */ 30);
        const references = [
          ManifestParser.makeReference('s10.mp4', 0, 10, baseUri),
          ManifestParser.makeReference('s11.mp4', 10, 20, baseUri),
          ManifestParser.makeReference('s12.mp4', 20, 30, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('honors presentationTimeOffset', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate media="s$Number$.mp4" duration="10"',
          ' presentationTimeOffset="50" />',
        ], /* duration= */ 30, /* startTime= */ 40);
  
        fakeNetEngine.setResponseText('dummy://foo', source);
        const manifest = await parser.start('dummy://foo', playerInterface);
  
        expect(manifest.variants.length).toBe(1);
  
        const stream = manifest.variants[0].video;
        expect(stream).toBeTruthy();
        await stream.createSegmentIndex();
  
        const expectedRef1 = ManifestParser.makeReference(
            's1.mp4', 40, 50, baseUri);
        expectedRef1.timestampOffset = -10;
  
        const expectedRef2 = ManifestParser.makeReference(
            's2.mp4', 50, 60, baseUri);
        expectedRef2.timestampOffset = -10;
  
        const pos1 = stream.segmentIndex.find(45);
        const pos2 = stream.segmentIndex.find(55);
        expect(stream.segmentIndex.get(pos1)).toEqual(expectedRef1);
        expect(stream.segmentIndex.get(pos2)).toEqual(expectedRef2);
      });
  
      it('handles segments larger than the period', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate media="s$Number$.mp4" duration="60" />',
        ], /* duration= */ 30);
        // The first segment is number 1 and position 0.
        // Although the segment is 60 seconds long, it is clipped to the period
        // duration of 30 seconds.
        const references = [
          ManifestParser.makeReference('s1.mp4', 0, 30, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('presentation start is parsed correctly', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate media="s$Number$.mp4" duration="60" />',
        ], /* duration= */ 30, /* startTime= */ 30);
  
        fakeNetEngine.setResponseText('dummy://foo', source);
        const manifest = await parser.start('dummy://foo', playerInterface);
        expect(manifest.presentationTimeline.getSeekRangeStart()).toBe(30);
      });
    });
  
    describe('index', () => {
      it('basic support', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1" index="index-$Bandwidth$.mp4"',
          '    initialization="init-$Bandwidth$.mp4" />',
        ]);
  
        fakeNetEngine
            .setResponseText('dummy://foo', source)
            .setResponseValue('http://example.com/index-500.mp4', mp4Index);
  
        const manifest = await parser.start('dummy://foo', playerInterface);
        const segmentReference =
            await Dash.getFirstVideoSegmentReference(manifest);
        const initSegmentReference = segmentReference.initSegmentReference;
        expect(initSegmentReference.getUris()).toEqual(
            ['http://example.com/init-500.mp4']);
        expect(initSegmentReference.getStartByte()).toBe(0);
        expect(initSegmentReference.getEndByte()).toBe(null);
  
        expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
        fakeNetEngine.expectRangeRequest(
            'http://example.com/index-500.mp4', 0, null);
      });
  
      it('defaults to index with multiple segment sources', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1" index="index-$Bandwidth$.mp4"',
          '    initialization="init-$Bandwidth$.mp4">',
          '  <SegmentTimeline>',
          '    <S t="0" d="3" r="12" />',
          '  </SegmentTimeline>',
          '</SegmentTemplate>',
        ]);
  
        fakeNetEngine
            .setResponseText('dummy://foo', source)
            .setResponseValue('http://example.com/index-500.mp4', mp4Index);
  
        const manifest = await parser.start('dummy://foo', playerInterface);
        const segmentReference =
            await Dash.getFirstVideoSegmentReference(manifest);
        const initSegmentReference = segmentReference.initSegmentReference;
        expect(initSegmentReference.getUris()).toEqual(
            ['http://example.com/init-500.mp4']);
        expect(initSegmentReference.getStartByte()).toBe(0);
        expect(initSegmentReference.getEndByte()).toBe(null);
  
        expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
        fakeNetEngine.expectRangeRequest(
            'http://example.com/index-500.mp4', 0, null);
      });
  
      it('requests init data for WebM', async () => {
        const source = [
          '<MPD mediaPresentationDuration="PT75S">',
          '  <Period>',
          '    <BaseURL>http://example.com</BaseURL>',
          '    <AdaptationSet mimeType="video/webm">',
          '      <Representation bandwidth="500">',
          '        <SegmentTemplate startNumber="1"',
          '            index="index-$Bandwidth$.webm"',
          '            initialization="init-$Bandwidth$.webm" />',
          '      </Representation>',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
  
        fakeNetEngine
            .setResponseText('dummy://foo', source)
            .setResponseValue('http://example.com/index-500.webm', webmIndex)
            .setResponseValue('http://example.com/init-500.webm', webmInit);
  
        const manifest = await parser.start('dummy://foo', playerInterface);
        const segmentReference =
            await Dash.getFirstVideoSegmentReference(manifest);
        const initSegmentReference = segmentReference.initSegmentReference;
        expect(initSegmentReference.getUris()).toEqual(
            ['http://example.com/init-500.webm']);
        expect(initSegmentReference.getStartByte()).toBe(0);
        expect(initSegmentReference.getEndByte()).toBe(null);
  
        expect(fakeNetEngine.request).toHaveBeenCalledTimes(3);
        fakeNetEngine.expectRangeRequest(
            'http://example.com/init-500.webm', 0, null);
        fakeNetEngine.expectRangeRequest(
            'http://example.com/index-500.webm', 0, null);
      });
  
      it('inherits from Period', async () => {
        const source = [
          '<MPD mediaPresentationDuration="PT75S">',
          '  <Period>',
          '    <BaseURL>http://example.com</BaseURL>',
          '    <SegmentTemplate startNumber="1" index="index-$Bandwidth$.mp4"',
          '        initialization="init-$Bandwidth$.mp4" />',
          '    <AdaptationSet mimeType="video/mp4">',
          '      <Representation bandwidth="500" />',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
  
        fakeNetEngine
            .setResponseText('dummy://foo', source)
            .setResponseValue('http://example.com/index-500.mp4', mp4Index);
  
        const manifest = await parser.start('dummy://foo', playerInterface);
        const segmentReference =
            await Dash.getFirstVideoSegmentReference(manifest);
        const initSegmentReference = segmentReference.initSegmentReference;
        expect(initSegmentReference.getUris()).toEqual(
            ['http://example.com/init-500.mp4']);
        expect(initSegmentReference.getStartByte()).toBe(0);
        expect(initSegmentReference.getEndByte()).toBe(null);
  
        expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
        fakeNetEngine.expectRangeRequest(
            'http://example.com/index-500.mp4', 0, null);
      });
  
      it('inherits from AdaptationSet', async () => {
        const source = [
          '<MPD mediaPresentationDuration="PT75S">',
          '  <Period>',
          '    <AdaptationSet mimeType="video/mp4">',
          '      <BaseURL>http://example.com</BaseURL>',
          '      <SegmentTemplate startNumber="1" index="index-$Bandwidth$.mp4"',
          '          initialization="init-$Bandwidth$.mp4" />',
          '      <Representation bandwidth="500" />',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
  
        fakeNetEngine
            .setResponseText('dummy://foo', source)
            .setResponseValue('http://example.com/index-500.mp4', mp4Index);
  
        const manifest = await parser.start('dummy://foo', playerInterface);
        const segmentReference =
            await Dash.getFirstVideoSegmentReference(manifest);
        const initSegmentReference = segmentReference.initSegmentReference;
        expect(initSegmentReference.getUris()).toEqual(
            ['http://example.com/init-500.mp4']);
        expect(initSegmentReference.getStartByte()).toBe(0);
        expect(initSegmentReference.getEndByte()).toBe(null);
  
        expect(fakeNetEngine.request).toHaveBeenCalledTimes(2);
        fakeNetEngine.expectRangeRequest(
            'http://example.com/index-500.mp4', 0, null);
      });
    });
  
    describe('media template', () => {
      it('defaults to timeline when also has duration', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="0" duration="10"',
          '    media="$Number$-$Time$-$Bandwidth$.mp4">',
          '  <SegmentTimeline>',
          '    <S t="0" d="15" r="2" />',
          '  </SegmentTimeline>',
          '</SegmentTemplate>',
        ], /* duration= */ 45);
        const references = [
          ManifestParser.makeReference('0-0-500.mp4', 0, 15, baseUri),
          ManifestParser.makeReference('1-15-500.mp4', 15, 30, baseUri),
          ManifestParser.makeReference('2-30-500.mp4', 30, 45, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('with @startnumber = 0', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="0" duration="10"',
          '    media="$Number$-$Time$-$Bandwidth$.mp4" />',
        ], /* duration= */ 30);
        const references = [
          ManifestParser.makeReference('0-0-500.mp4', 0, 10, baseUri),
          ManifestParser.makeReference('1-10-500.mp4', 10, 20, baseUri),
          ManifestParser.makeReference('2-20-500.mp4', 20, 30, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('with @startNumber = 1', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1" duration="10"',
          '    media="$Number$-$Time$-$Bandwidth$.mp4" />',
        ], /* duration= */ 30);
        const references = [
          ManifestParser.makeReference('1-0-500.mp4', 0, 10, baseUri),
          ManifestParser.makeReference('2-10-500.mp4', 10, 20, baseUri),
          ManifestParser.makeReference('3-20-500.mp4', 20, 30, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('with @startNumber > 1', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="10" duration="10"',
          '    media="$Number$-$Time$-$Bandwidth$.mp4" />',
        ], /* duration= */ 30);
        const references = [
          ManifestParser.makeReference('10-0-500.mp4', 0, 10, baseUri),
          ManifestParser.makeReference('11-10-500.mp4', 10, 20, baseUri),
          ManifestParser.makeReference('12-20-500.mp4', 20, 30, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('with @timescale > 1', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1" timescale="9000" duration="9000"',
          '    media="$Number$-$Time$-$Bandwidth$.mp4" />',
        ], /* duration= */ 3);
        const references = [
          ManifestParser.makeReference('1-0-500.mp4', 0, 1, baseUri),
          ManifestParser.makeReference('2-9000-500.mp4', 1, 2, baseUri),
          ManifestParser.makeReference('3-18000-500.mp4', 2, 3, baseUri),
        ];
        await Dash.testSegmentIndex(source, references);
      });
  
      it('across representations', async () => {
        const source = [
          '<MPD>',
          '  <Period duration="PT60S">',
          '    <AdaptationSet mimeType="video/webm">',
          '      <BaseURL>http://example.com</BaseURL>',
          '      <SegmentTemplate startNumber="1" duration="10"',
          '          media="$Number$-$Time$-$Bandwidth$.mp4" />',
          '      <Representation bandwidth="100" />',
          '      <Representation bandwidth="200" />',
          '      <Representation bandwidth="300" />',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
  
        fakeNetEngine.setResponseText('dummy://foo', source);
        const actual = await parser.start('dummy://foo', playerInterface);
        expect(actual).toBeTruthy();
  
        const variants = actual.variants;
        expect(variants.length).toBe(3);
  
        await variants[0].video.createSegmentIndex();
        await variants[1].video.createSegmentIndex();
        await variants[2].video.createSegmentIndex();
  
        const getRefAt = (stream, time) => {
          return stream.segmentIndex[Symbol.iterator]().seek(time);
        };
  
        expect(getRefAt(variants[0].video, 0)).toEqual(
            ManifestParser.makeReference('1-0-100.mp4', 0, 10, baseUri));
        expect(getRefAt(variants[0].video, 12)).toEqual(
            ManifestParser.makeReference('2-10-100.mp4', 10, 20, baseUri));
        expect(getRefAt(variants[1].video, 0)).toEqual(
            ManifestParser.makeReference('1-0-200.mp4', 0, 10, baseUri));
        expect(getRefAt(variants[1].video, 12)).toEqual(
            ManifestParser.makeReference('2-10-200.mp4', 10, 20, baseUri));
        expect(getRefAt(variants[2].video, 0)).toEqual(
            ManifestParser.makeReference('1-0-300.mp4', 0, 10, baseUri));
        expect(getRefAt(variants[2].video, 12)).toEqual(
            ManifestParser.makeReference('2-10-300.mp4', 10, 20, baseUri));
      });
  
      it('create correct Uris when multiple representations', async () => {
        const source = [
          '<MPD>',
          '  <Period duration="PT60S">',
          '    <AdaptationSet mimeType="video/webm">',
          '      <BaseURL>http://example.com</BaseURL>',
          '      <SegmentTemplate timescale="1000"',
          '         initialization="segment-$RepresentationID$.dash"',
          '          media="segment-$RepresentationID$-$Time$.dash">',
          '        <SegmentTimeline>',
          '           <S t="0" d="6000" r="1176" />',
          '         <S d="4520" />',
          '       </SegmentTimeline>',
          '      </SegmentTemplate>',
          '      <Representation id="test1" bandwidth="100" />',
          '      <Representation id="test2" bandwidth="200" />',
          '      <Representation id="test3" bandwidth="300" />',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
  
        fakeNetEngine.setResponseText('dummy://foo', source);
        const actual = await parser.start('dummy://foo', playerInterface);
        expect(actual).toBeTruthy();
  
        const variants = actual.variants;
        expect(variants.length).toBe(3);
        await variants[0].video.createSegmentIndex();
        await variants[1].video.createSegmentIndex();
        await variants[2].video.createSegmentIndex();
  
        const firstSegment = (variant) => {
          return Array.from(variant.video.segmentIndex)[0];
        };
  
        expect(firstSegment(variants[0]).getUris()).toEqual(
            ['http://example.com/segment-test1-0.dash']);
        expect(firstSegment(variants[1]).getUris()).toEqual(
            ['http://example.com/segment-test2-0.dash']);
        expect(firstSegment(variants[2]).getUris()).toEqual(
            ['http://example.com/segment-test3-0.dash']);
      });
    });
  
    describe('rejects streams with', () => {
      it('bad container type', async () => {
        const source = [
          '<MPD mediaPresentationDuration="PT75S">',
          '  <Period>',
          '    <BaseURL>http://example.com</BaseURL>',
          '    <AdaptationSet mimeType="video/cats">',
          '      <Representation bandwidth="500">',
          '        <SegmentTemplate startNumber="1"',
          '            index="index-$Bandwidth$.webm"',
          '            initialization="init-$Bandwidth$.webm" />',
          '      </Representation>',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
        const error = new shaka.util.Error(
            shaka.util.Error.Severity.CRITICAL,
            shaka.util.Error.Category.MANIFEST,
            shaka.util.Error.Code.DASH_UNSUPPORTED_CONTAINER);
        await Dash.testFails(source, error);
      });
  
      it('no init data with webm', async () => {
        const source = [
          '<MPD>',
          '  <Period duration="PT30S">',
          '    <BaseURL>http://example.com</BaseURL>',
          '    <AdaptationSet mimeType="video/webm">',
          '      <Representation bandwidth="500">',
          '        <SegmentTemplate startNumber="1"',
          '            index="index-$Bandwidth$.webm" />',
          '      </Representation>',
          '    </AdaptationSet>',
          '  </Period>',
          '</MPD>',
        ].join('\n');
        const error = new shaka.util.Error(
            shaka.util.Error.Severity.CRITICAL,
            shaka.util.Error.Category.MANIFEST,
            shaka.util.Error.Code.DASH_WEBM_MISSING_INIT);
        await Dash.testFails(source, error);
      });
  
      it('not enough segment info', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1" />',
        ]);
        const error = new shaka.util.Error(
            shaka.util.Error.Severity.CRITICAL,
            shaka.util.Error.Category.MANIFEST,
            shaka.util.Error.Code.DASH_NO_SEGMENT_INFO);
        await Dash.testFails(source, error);
      });
  
      it('no media template', async () => {
        const source = Dash.makeSimpleManifestText([
          '<SegmentTemplate startNumber="1">',
          '  <SegmentTimeline>',
          '    <S d="10" />',
          '  </SegmentTimeline>',
          '</SegmentTemplate>',
        ]);
        const error = new shaka.util.Error(
            shaka.util.Error.Severity.CRITICAL,
            shaka.util.Error.Category.MANIFEST,
            shaka.util.Error.Code.DASH_NO_SEGMENT_INFO);
        await Dash.testFails(source, error);
      });
    });
  });
  
  