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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.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>

<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="gr-diff-preferences.html">

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

<script>
  suite('gr-diff-preferences tests', function() {
    var element;

    setup(function() {
      element = fixture('basic');
    });

    test('model changes', function() {
      element.prefs = {
        context: 10,
        font_size: 12,
        line_length: 100,
        show_tabs: true,
        tab_size: 8,
        show_whitespace_errors: true,
        syntax_highlighting: true,
      };
      assert.deepEqual(element.prefs, element._newPrefs);

      element.$.contextSelect.value = '50';
      element.fire('change', {}, {node: element.$.contextSelect});
      element.$.columnsInput.bindValue = 80;
      element.$.fontSizeInput.bindValue = 10;
      element.$.tabSizeInput.bindValue = 4;
      MockInteractions.tap(element.$.showTabsInput);
      MockInteractions.tap(element.$.showTrailingWhitespaceInput);
      MockInteractions.tap(element.$.syntaxHighlightInput);
      MockInteractions.tap(element.$.lineWrappingInput);

      assert.equal(element._newPrefs.context, 50);
      assert.equal(element._newPrefs.font_size, 10);
      assert.equal(element._newPrefs.line_length, 80);
      assert.equal(element._newPrefs.tab_size, 4);
      assert.isFalse(element._newPrefs.show_tabs);
      assert.isFalse(element._newPrefs.show_whitespace_errors);
      assert.isTrue(element._newPrefs.line_wrapping);
      assert.isFalse(element._newPrefs.syntax_highlighting);
    });

    test('clicking fit to screen hides line length input', function() {
      element.prefs = {line_wrapping: false};

      assert.isFalse(element.$.columnsPref.hidden);

      MockInteractions.tap(element.$.lineWrappingInput);
      assert.isTrue(element.$.columnsPref.hidden);

      MockInteractions.tap(element.$.lineWrappingInput);
      assert.isFalse(element.$.columnsPref.hidden);
    });

    test('clicking save button calls _handleSave function', function() {
      var savePrefs = sinon.stub(element, '_handleSave');
      MockInteractions.tap(element.$.saveButton);
      flushAsynchronousOperations();
      assert(savePrefs.calledOnce);
      savePrefs.restore();
    });

    test('events', function(done) {
      var savePromise = new Promise(function(resolve) {
        element.addEventListener('save', function() { resolve(); });
      });
      var cancelPromise = new Promise(function(resolve) {
        element.addEventListener('cancel', function() { resolve(); });
      });
      Promise.all([savePromise, cancelPromise]).then(function() {
        done();
      });
      MockInteractions.tap(element.$$('gr-button[primary]'));
      MockInteractions.tap(element.$$('gr-button:not([primary])'));
    });
  });
</script>