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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-dialog</title>

<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>

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

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

<script>
  suite('gr-diff-preferences-dialog', () => {
    let element;
    setup(() => {
      element = basicFixture.instantiate();
    });
    test('changes applies only on save', async () => {
      const originalDiffPrefs = {
        line_wrapping: true,
      };
      element.diffPrefs = originalDiffPrefs;

      element.open();
      await flush();
      assert.isTrue(element.$.diffPreferences.$.lineWrappingInput.checked);

      MockInteractions.tap(element.$.diffPreferences.$.lineWrappingInput);
      await flush();
      assert.isFalse(element.$.diffPreferences.$.lineWrappingInput.checked);
      assert.isTrue(element._diffPrefsChanged);
      assert.isTrue(element.diffPrefs.line_wrapping);
      assert.isTrue(originalDiffPrefs.line_wrapping);

      MockInteractions.tap(element.$.saveButton);
      await flush();
      // Original prefs must remains unchanged, dialog must expose a new object
      assert.isTrue(originalDiffPrefs.line_wrapping);
      assert.isFalse(element.diffPrefs.line_wrapping);
    });
  });
</script>