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

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

<link rel="import" href="gr-storage.html">

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

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

    function cleanupStorage() {
      // Make sure there are no entries in storage.
      for (var key in window.localStorage) {
        window.localStorage.removeItem(key);
      }
    }

    setup(function() {
      element = fixture('basic');
      storage = element._storage;
      cleanupStorage();
    });

    test('storing, retrieving and erasing drafts', function() {
      var changeNum = 1234;
      var patchNum = 5;
      var path = 'my_source_file.js';
      var line = 123;
      var location = {
        changeNum: changeNum,
        patchNum: patchNum,
        path: path,
        line: line,
      };

      // The key is in the expected format.
      var key = element._getDraftKey(location);
      assert.equal(key, ['draft', changeNum, patchNum, path, line].join(':'));

      // There should be no draft initially.
      var draft = element.getDraftComment(location);
      assert.isNotOk(draft);

      // Setting the draft stores it under the expected key.
      element.setDraftComment(location, 'my comment');
      assert.isOk(storage.getItem(key));
      assert.equal(JSON.parse(storage.getItem(key)).message, 'my comment');
      assert.isOk(JSON.parse(storage.getItem(key)).updated);

      // Erasing the draft removes the key.
      element.eraseDraftComment(location);
      assert.isNotOk(storage.getItem(key));

      cleanupStorage();
    });

    test('automatically removes old drafts', function() {
      var changeNum = 1234;
      var patchNum = 5;
      var path = 'my_source_file.js';
      var line = 123;
      var location = {
        changeNum: changeNum,
        patchNum: patchNum,
        path: path,
        line: line,
      };
      var key = element._getDraftKey(location);

      // Make sure that the call to cleanup doesn't get throttled.
      element._lastCleanup = 0;

      var cleanupSpy = sinon.spy(element, '_cleanupDrafts');

      // Create a message with a timestamp that is a second behind the max age.
      storage.setItem(key, JSON.stringify({
        message: 'old message',
        updated: Date.now() - 24 * 60 * 60 * 1000 - 1000,
      }));

      // Getting the draft should cause it to be removed.
      var draft = element.getDraftComment(location);

      assert.isTrue(cleanupSpy.called);
      assert.isNotOk(draft);
      assert.isNotOk(storage.getItem(key));

      cleanupSpy.restore();
      cleanupStorage();
    });
  });
</script>