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<meta name="viewport" content="width=device-width, minimum-scale=1.0, initial-scale=1.0, user-scalable=yes">
<meta charset="utf-8">
<title>gr-diff-preferences-dialog</title>

<script src="/node_modules/@webcomponents/webcomponentsjs/custom-elements-es5-adapter.js"></script>

<script src="/node_modules/@webcomponents/webcomponentsjs/webcomponents-lite.js"></script>
<script src="/components/wct-browser-legacy/browser.js"></script>
<script src="/components/web-component-tester/data/a11ySuite.js"></script>

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

<script type="module">
import '../../../test/common-test-setup.js';
import './gr-diff-preferences-dialog.js';
import {flush} from '@polymer/polymer/lib/legacy/polymer.dom.js';

suite('gr-diff-preferences-dialog', () => {
  let element;
  setup(() => {
    element = fixture('basic');
  });
  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>