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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-preferences</title>

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<link rel="import" href="gr-diff-preferences.html">

<script>void(0);</script>

<test-fixture id="basic">
  <template>
    <gr-diff-preferences></gr-diff-preferences>
  </template>
</test-fixture>

<script>
  suite('gr-diff-preferences tests', () => {
    let element;
    let sandbox;
    let diffPreferences;

    function valueOf(title, fieldsetid) {
      const sections = element.$[fieldsetid].querySelectorAll('section');
      let titleEl;
      for (let i = 0; i < sections.length; i++) {
        titleEl = sections[i].querySelector('.title');
        if (titleEl.textContent.trim() === title) {
          return sections[i].querySelector('.value');
        }
      }
    }

    setup(() => {
      diffPreferences = {
        context: 10,
        line_wrapping: false,
        line_length: 100,
        tab_size: 8,
        font_size: 12,
        show_tabs: true,
        show_whitespace_errors: true,
        syntax_highlighting: true,
        manual_review: false,
        ignore_whitespace: 'IGNORE_NONE',
      };

      stub('gr-rest-api-interface', {
        getDiffPreferences() {
          return Promise.resolve(diffPreferences);
        },
      });

      element = fixture('basic');
      sandbox = sinon.sandbox.create();
      return element.loadData();
    });

    teardown(() => { sandbox.restore(); });

    test('renders', () => {
      // Rendered with the expected preferences selected.
      assert.equal(valueOf('Context', 'diffPreferences')
          .firstElementChild.bindValue, diffPreferences.context);
      assert.equal(valueOf('Fit to screen', 'diffPreferences')
          .firstElementChild.checked, diffPreferences.line_wrapping);
      assert.equal(valueOf('Diff width', 'diffPreferences')
          .firstElementChild.bindValue, diffPreferences.line_length);
      assert.equal(valueOf('Tab width', 'diffPreferences')
          .firstElementChild.bindValue, diffPreferences.tab_size);
      assert.equal(valueOf('Font size', 'diffPreferences')
          .firstElementChild.bindValue, diffPreferences.font_size);
      assert.equal(valueOf('Show tabs', 'diffPreferences')
          .firstElementChild.checked, diffPreferences.show_tabs);
      assert.equal(valueOf('Show trailing whitespace', 'diffPreferences')
          .firstElementChild.checked, diffPreferences.show_whitespace_errors);
      assert.equal(valueOf('Syntax highlighting', 'diffPreferences')
          .firstElementChild.checked, diffPreferences.syntax_highlighting);
      assert.equal(
          valueOf('Automatically mark viewed files reviewed', 'diffPreferences')
              .firstElementChild.checked, diffPreferences.manual_review);
      assert.equal(valueOf('Ignore Whitespace', 'diffPreferences')
          .firstElementChild.bindValue, diffPreferences.ignore_whitespace);

      assert.isFalse(element.hasUnsavedChanges);
    });

    test('save changes', () => {
      sandbox.stub(element.$.restAPI, 'saveDiffPreferences')
          .returns(Promise.resolve());
      const showTrailingWhitespaceCheckbox =
          valueOf('Show trailing whitespace', 'diffPreferences')
          .firstElementChild;
      showTrailingWhitespaceCheckbox.checked = false;
      element._handleShowTrailingWhitespaceTap();

      assert.isTrue(element.hasUnsavedChanges);

      // Save the change.
      return element.save().then(() => {
        assert.isFalse(element.hasUnsavedChanges);
      });
    });
  });
</script>