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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<title>gr-diff-view</title>

<script src="../../bower_components/webcomponentsjs/webcomponents.min.js"></script>
<script src="../../bower_components/web-component-tester/browser.js"></script>
<script src="../../bower_components/test-fixture/test-fixture-mocha.js"></script>
<script src="../scripts/changes.js"></script>
<script src="../scripts/util.js"></script>
<link rel="import" href="../../bower_components/test-fixture/test-fixture.html">
<link rel="import" href="../../bower_components/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="../elements/gr-diff-view.html">

<test-fixture id="basic">
  <template>
    <gr-diff-view ruler-width="0"></gr-diff-view>
  </template>
</test-fixture>

<test-fixture id="comments">
  <template>
    <gr-diff-view></gr-diff-view>
  </template>
</test-fixture>


<script>
  suite('gr-diff-view tests', function() {
    var element;
    var elWithComments;
    // Original diff:
    // Left side (side A):
    // 1: if i < 5 { // "comments" &= \'fun\' && true
    // 2:   println("i is less than five")
    // 3: }
    // 4:
    // 5:
    // 6: // Comment
    // 7: foo
    // 8: bar
    // 9: Bad news: combustible lemons failed.
    //
    // Right side (side B):
    // 1: if i < 5 { // "comments" &= \'fun\' && true
    // 2:   println("i is less than five")
    // 3: }
    // 4:
    // 5:
    // 6: // Comment
    // 7: baz
    // 8: Bad news: combustible lemons failed.
    //
    var diffContent = [
      {
        ab: [
          'if i < 5 { // "comments" &= \'fun\' && true',
          '  println("i is less than five")',
          '}',
          '',
          '',
          '// Comment'
        ]
      },
      {
        a: [
          'foo',
          'bar'
        ],
        b: [
          'baz',
        ]
      },
      {
        ab: [
          'Bad news: combustible lemons failed.'
        ]
      }
    ];
    setup(function() {
      element = fixture('basic');
      element._maybeRenderDiff({content: diffContent}, [], []);
      flushAsynchronousOperations();

      elWithComments = fixture('comments');
      elWithComments._patchNum = 1;
    });

    test('ab content is the same for left and right sides', function() {
      for (var i = 0; i < diffContent[0].ab.length; i++) {
        var leftEls = element.querySelectorAll(
            '#leftDiffContent .content[data-line-num="' + (i + 1) + '"]');
        assert.equal(leftEls.length, 1);
        var rightEls = element.querySelectorAll(
            '#rightDiffContent .content[data-line-num="' + (i + 1) + '"]');
        assert.equal(rightEls.length, 1);
        assert.equal(leftEls[0].textContent, rightEls[0].textContent);
      }
    });

    test('all line number and content elements have same (non-zero) height',
        function() {
      var els = element.querySelectorAll('.lineNum, .content');
      assert.isAbove(els.length, 0);
      var offsetHeight = els.length > 0 && els[0].offsetHeight;
      assert.isAbove(offsetHeight, 0);
      for (var i = 0; i < els.length; i++) {
        assert.equal(offsetHeight, els[i].offsetHeight);
      }
    });

    test('content is properly escaped', function() {
      var firstLineEls = element.querySelectorAll(
        '#leftDiffContent .content[data-line-num="1"], ' +
        '#rightDiffContent .content[data-line-num="1"]');
      assert.equal(2, firstLineEls.length);
      for (var i = 0; i < firstLineEls.length; i++) {
        assert.equal(firstLineEls[i].innerHTML,
            'if i &lt; 5 { // "comments" &amp;= \'fun\' &amp;&amp; true');
      }
    });

    test('content and line numbers are correct for a/b edit', function() {
      assert.equal(element.$$(
          '#leftDiffContent .content[data-line-num="7"]').textContent, 'foo');
      assert.equal(element.$$(
          '#leftDiffContent .content[data-line-num="8"]').textContent, 'bar');
      assert.equal(element.$$(
          '#rightDiffContent .content[data-line-num="7"]').textContent, 'baz');
      assert.equal(element.$$(
          '#leftDiffContent .content[data-line-num="9"]').textContent,
          element.$$(
              '#rightDiffContent .content[data-line-num="8"]').textContent);
    });

    test('ruler width changes are applied correctly', function() {
      assert.equal(element.rulerWidth, 0);
      assert.equal(element.querySelectorAll('.ruler').length, 0);
      element.rulerWidth = 80;
      flushAsynchronousOperations();
      var els = element.querySelectorAll('.ruler');
      assert.isAbove(els.length, 0);
      for (var i = 0; i < els.length; i++) {
        assert.equal(els[i].style.left, '80ch');
      }
      element.rulerWidth = 0;
      flushAsynchronousOperations();
      assert.equal(element.querySelectorAll('.ruler').length, 0);
      element.rulerWidth = 100;
      flushAsynchronousOperations();
      els = element.querySelectorAll('.ruler');
      assert.isAbove(els.length, 0);
      for (var i = 0; i < els.length; i++) {
        assert.equal(els[i].style.left, '100ch');
      }
    });

    test('comment threads are rendered correctly', function() {
      elWithComments._maybeRenderDiff({content: diffContent}, [], [
          {
            id: 'file_comment',
            message: 'this is a file comment about the meaninglessness of life',
            author: {
              name: 'GLaDOS'
            }
          },
          {
            id: 'all_the_lemons',
            line: 8,
            message: 'MAKE LIFE TAKE THE LEMONS BACK',
            author: {
              name: 'Cave Johnson',
            },
          }
      ]);
      flushAsynchronousOperations();
      var threadEls = elWithComments.querySelectorAll(
          'gr-diff-comment-thread[data-thread-id="thread-1-8"]');
      assert.equal(threadEls.length, 1);
      var fillerEls = elWithComments.querySelectorAll(
          '.js-threadFiller[data-thread-id="thread-1-8"]');
      assert.equal(fillerEls.length, 3);

      threadEls = elWithComments.querySelectorAll(
          'gr-diff-comment-thread[data-thread-id="thread-1-FILE"]');
      assert.equal(threadEls.length, 1);
      fillerEls = elWithComments.querySelectorAll(
          '.js-threadFiller[data-thread-id="thread-1-FILE"]');
      assert.equal(fillerEls.length, 3);
    });

  });
</script>