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

<script src="../../../bower_components/webcomponentsjs/webcomponents-lite.min.js"></script>
<script src="../../../bower_components/web-component-tester/browser.js"></script>
<link rel="import" href="../../../test/common-test-setup.html"/>
<script src="../../../scripts/util.js"></script>
<script src="gr-reviewer-updates-parser.js"></script>

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

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

    teardown(() => {
      sandbox.restore();
    });

    test('ignores changes without messages', () => {
      const 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', () => {
      const 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', () => {
      const 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', () => {
      const 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', () => {
      const reviewer1 = {_account_id: 1};
      const reviewer2 = {_account_id: 2};
      const date1 = '2017-01-26 12:11:50.000000000';
      const date2 = '2017-01-26 12:11:55.000000000'; // Within threshold.
      const date3 = '2017-01-26 12:33:50.000000000';
      const date4 = '2017-01-26 12:44:50.000000000';
      const makeItem = function(state, reviewer, opt_date, opt_author) {
        return {
          reviewer,
          updated: opt_date || date1,
          updated_by: opt_author || reviewer1,
          state,
        };
      };
      let 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', () => {
      const reviewer1 = {_account_id: 1};
      const reviewer2 = {_account_id: 2};
      const makeItem = function(prev, state, opt_reviewer) {
        return {
          reviewer: opt_reviewer || reviewer1,
          prev_state: prev,
          state,
        };
      };
      const makeUpdate = function(items) {
        return {
          author: reviewer1,
          updated: '',
          updates: items,
        };
      };
      const 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);

      let 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]);
    });

    test('_advanceUpdates', () => {
      const T0 = util.parseDate('2017-02-17 19:04:18.000000000').getTime();
      const tplus = delta => {
        return new Date(T0 + delta)
            .toISOString().replace('T', ' ').replace('Z', '000000');
      };
      const change = {
        reviewer_updates: [{
          date: tplus(0),
          type: 'REVIEWER_UPDATE',
          updates: [{
            message: 'same time update',
          }],
        }, {
          date: tplus(200),
          type: 'REVIEWER_UPDATE',
          updates: [{
            message: 'update within threshold',
          }],
        }, {
          date: tplus(600),
          type: 'REVIEWER_UPDATE',
          updates: [{
            message: 'update between messages',
          }],
        }, {
          date: tplus(1000),
          type: 'REVIEWER_UPDATE',
          updates: [{
            message: 'late update',
          }],
        }],
        messages: [{
          id: '6734489eb9d642de28dbf2bcf9bda875923800d8',
          date: tplus(0),
          message: 'Uploaded patch set 1.',
        }, {
          id: '6734489eb9d642de28dbf2bcf9bda875923800d8',
          date: tplus(800),
          message: 'Uploaded patch set 2.',
        }],
      };
      instance = new GrReviewerUpdatesParser(change);
      instance._advanceUpdates();
      const updates = instance.result.reviewer_updates;
      assert.isBelow(util.parseDate(updates[0].date).getTime(), T0);
      assert.isBelow(util.parseDate(updates[1].date).getTime(), T0);
      assert.equal(updates[2].date, tplus(100));
      assert.equal(updates[3].date, tplus(500));
    });
  });
</script>