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<title>gr-reviewer-updates-parser</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">

<script src="../../../scripts/util.js"></script>
<script src="gr-reviewer-updates-parser.js"></script>

<script>
  suite('gr-reviewer-updates-parser tests', function() {
    var sandbox;
    var instance;

    setup(function() {
      sandbox = sinon.sandbox.create();
    });

    teardown(function() {
      sandbox.restore();
    });

    test('ignores changes without messages', function() {
      var change = {};
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_filterRemovedMessages');
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_groupUpdates');
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_formatUpdates');
      assert.strictEqual(GrReviewerUpdatesParser.parse(change), change);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._filterRemovedMessages.called);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._groupUpdates.called);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._formatUpdates.called);
    });

    test('ignores changes without reviewer updates', function() {
      var change = {
        messages: [],
      };
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_filterRemovedMessages');
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_groupUpdates');
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_formatUpdates');
      assert.strictEqual(GrReviewerUpdatesParser.parse(change), change);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._filterRemovedMessages.called);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._groupUpdates.called);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._formatUpdates.called);
    });

    test('ignores changes with empty reviewer updates', function() {
      var change = {
        messages: [],
        reviewer_updates: [],
      };
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_filterRemovedMessages');
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_groupUpdates');
      sandbox.stub(
          GrReviewerUpdatesParser.prototype, '_formatUpdates');
      assert.strictEqual(GrReviewerUpdatesParser.parse(change), change);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._filterRemovedMessages.called);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._groupUpdates.called);
      assert.isFalse(
          GrReviewerUpdatesParser.prototype._formatUpdates.called);
    });

    test('filter removed messages', function() {
      var change = {
          messages: [
            {
              message: 'msg1',
              tag: 'autogenerated:gerrit:deleteReviewer',
            },
            {
              message: 'msg2',
              tag: 'foo',
            }
          ],
      };
      instance = new GrReviewerUpdatesParser(change);
      instance._filterRemovedMessages();
      assert.deepEqual(instance.result, {
        messages: [{
          message: 'msg2',
          tag: 'foo',
        }],
      });
    });

    test('group reviewer updates', function() {
      var reviewer1 = {_account_id: 1};
      var reviewer2 = {_account_id: 2};
      var date1 = '2017-01-26 12:11:50.000000000';
      var date2 = '2017-01-26 12:11:55.000000000'; // Within threshold.
      var date3 = '2017-01-26 12:33:50.000000000';
      var date4 = '2017-01-26 12:44:50.000000000';
      var makeItem = function(state, reviewer, opt_date, opt_author) {
        return {
          reviewer: reviewer,
          updated: opt_date || date1,
          updated_by: opt_author || reviewer1,
          state: state,
        };
      };
      var change = {
        reviewer_updates: [
          makeItem('REVIEWER', reviewer1), // New group.
          makeItem('CC', reviewer2), // Appended.
          makeItem('REVIEWER', reviewer2, date2), // Overrides previous one.

          makeItem('CC', reviewer1, date2, reviewer2), // New group.

          makeItem('REMOVED', reviewer2, date3), // Group has no state change.
          makeItem('REVIEWER', reviewer2, date3),

          makeItem('CC', reviewer1, date4), // No change, removed.
          makeItem('REVIEWER', reviewer1, date4), // Forms new group
          makeItem('REMOVED', reviewer2, date4), // Should be grouped.
        ],
      };

      instance = new GrReviewerUpdatesParser(change);
      instance._groupUpdates();
      change = instance.result;

      assert.equal(change.reviewer_updates.length, 3);
      assert.equal(change.reviewer_updates[0].updates.length, 2);
      assert.equal(change.reviewer_updates[1].updates.length, 1);
      assert.equal(change.reviewer_updates[2].updates.length, 2);

      assert.equal(change.reviewer_updates[0].date, date1);
      assert.deepEqual(change.reviewer_updates[0].author, reviewer1);
      assert.deepEqual(change.reviewer_updates[0].updates, [
        {
          reviewer: reviewer1,
          state: 'REVIEWER',
        },
        {
          reviewer: reviewer2,
          state: 'REVIEWER',
        },
      ]);

      assert.equal(change.reviewer_updates[1].date, date2);
      assert.deepEqual(change.reviewer_updates[1].author, reviewer2);
      assert.deepEqual(change.reviewer_updates[1].updates, [
        {
          reviewer: reviewer1,
          state: 'CC',
          prev_state: 'REVIEWER',
        },
      ]);

      assert.equal(change.reviewer_updates[2].date, date4);
      assert.deepEqual(change.reviewer_updates[2].author, reviewer1);
      assert.deepEqual(change.reviewer_updates[2].updates, [
        {
          reviewer: reviewer1,
          prev_state: 'CC',
          state: 'REVIEWER',
        },
        {
          reviewer: reviewer2,
          prev_state: 'REVIEWER',
          state: 'REMOVED',
        },
      ]);
    });

    test('format reviewer updates', function() {
      var reviewer1 = {_account_id: 1};
      var reviewer2 = {_account_id: 2};
      var makeItem = function(prev, state, opt_reviewer) {
        return {
          reviewer: opt_reviewer || reviewer1,
          prev_state: prev,
          state: state,
        };
      };
      var makeUpdate = function(items) {
        return {
          author: reviewer1,
          updated: '',
          updates: items,
        };
      };
      var change = {
          reviewer_updates: [
            makeUpdate([
              makeItem(undefined, 'CC'),
              makeItem(undefined, 'CC', reviewer2)
            ]),
            makeUpdate([
              makeItem('CC', 'REVIEWER'),
              makeItem('REVIEWER', 'REMOVED'),
              makeItem('REMOVED', 'REVIEWER'),
              makeItem(undefined, 'REVIEWER', reviewer2),
            ]),
          ],
      };

      instance = new GrReviewerUpdatesParser(change);
      instance._formatUpdates();

      assert.equal(change.reviewer_updates.length, 2);
      assert.equal(change.reviewer_updates[0].updates.length, 1);
      assert.equal(change.reviewer_updates[1].updates.length, 3);

      var items = change.reviewer_updates[0].updates;
      assert.equal(items[0].message, 'added to CC: ');
      assert.deepEqual(items[0].reviewers, [reviewer1, reviewer2]);

      items = change.reviewer_updates[1].updates;
      assert.equal(items[0].message, 'moved from CC to REVIEWER: ');
      assert.deepEqual(items[0].reviewers, [reviewer1]);
      assert.equal(items[1].message, 'removed from REVIEWER: ');
      assert.deepEqual(items[1].reviewers, [reviewer1]);
      assert.equal(items[2].message, 'added to REVIEWER: ');
      assert.deepEqual(items[2].reviewers, [reviewer1, reviewer2]);
    });
  });
</script>