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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</title>

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

<link rel="import" href="../../../bower_components/iron-test-helpers/iron-test-helpers.html">
<link rel="import" href="gr-diff.html">

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

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

    suite('not logged in', function() {
      setup(function() {
        stub('gr-rest-api-interface', {
          getLoggedIn: function() { return Promise.resolve(false); },
        });
        element = fixture('basic');
      });

      test('toggleLeftDiff', function() {
        element.toggleLeftDiff();
        assert.isTrue(element.classList.contains('no-left'));
        element.toggleLeftDiff();
        assert.isFalse(element.classList.contains('no-left'));
      });

      test('view does not start with displayLine classList', function() {
        assert.isFalse(
            element.$$('.diffContainer').classList.contains('displayLine'));
      });

      test('displayLine class added called when displayLine is true',
          function() {
        var spy = sinon.spy(element, '_computeContainerClass');
        element.displayLine = true;
        assert.isTrue(spy.called);
        assert.isTrue(
            element.$$('.diffContainer').classList.contains('displayLine'));
        spy.restore();
      });

      test('get drafts', function(done) {
        element.patchRange = {basePatchNum: 0, patchNum: 0};

        var getDraftsStub = sinon.stub(element.$.restAPI, 'getDiffDrafts');
        element._getDiffDrafts().then(function(result) {
          assert.deepEqual(result, {baseComments: [], comments: []});
          sinon.assert.notCalled(getDraftsStub);
          getDraftsStub.restore();
          done();
        });
      });

      test('loads files weblinks', function(done) {
        var diffStub = sinon.stub(element.$.restAPI, 'getDiff').returns(
            Promise.resolve({
              meta_a: {
                web_links: 'foo',
              },
              meta_b: {
                web_links: 'bar',
              },
            }));
        element.patchRange = {};
        element._getDiff().then(function() {
          assert.deepEqual(element.filesWeblinks, {
            meta_a: 'foo',
            meta_b: 'bar',
          });
          done();
        });
        diffStub.restore();
      });

      test('remove comment', function() {
        element._comments = {
          meta: {
            changeNum: '42',
            patchRange: {
              basePatchNum: 'PARENT',
              patchNum: 3,
            },
            path: '/path/to/foo',
            projectConfig: {foo: 'bar'},
          },
          left: [
            {id: 'bc1', side: 'PARENT'},
            {id: 'bc2', side: 'PARENT'},
            {id: 'bd1', __draft: true, side: 'PARENT'},
            {id: 'bd2', __draft: true, side: 'PARENT'},
          ],
          right: [
            {id: 'c1'},
            {id: 'c2'},
            {id: 'd1', __draft: true},
            {id: 'd2', __draft: true},
          ],
        };

        element._removeComment({});
        // Using JSON.stringify because Safari 9.1 (11601.5.17.1) doesn’t seem
        // to believe that one object deepEquals another even when they do :-/.
        assert.equal(JSON.stringify(element._comments), JSON.stringify({
          meta: {
            changeNum: '42',
            patchRange: {
              basePatchNum: 'PARENT',
              patchNum: 3,
            },
            path: '/path/to/foo',
            projectConfig: {foo: 'bar'},
          },
          left: [
            {id: 'bc1', side: 'PARENT'},
            {id: 'bc2', side: 'PARENT'},
            {id: 'bd1', __draft: true, side: 'PARENT'},
            {id: 'bd2', __draft: true, side: 'PARENT'},
          ],
          right: [
            {id: 'c1'},
            {id: 'c2'},
            {id: 'd1', __draft: true},
            {id: 'd2', __draft: true},
          ],
        }));

        element._removeComment({id: 'bc2', side: 'PARENT'});
        assert.equal(JSON.stringify(element._comments), JSON.stringify({
          meta: {
            changeNum: '42',
            patchRange: {
              basePatchNum: 'PARENT',
              patchNum: 3,
            },
            path: '/path/to/foo',
            projectConfig: {foo: 'bar'},
          },
          left: [
            {id: 'bc1', side: 'PARENT'},
            {id: 'bd1', __draft: true, side: 'PARENT'},
            {id: 'bd2', __draft: true, side: 'PARENT'},
          ],
          right: [
            {id: 'c1'},
            {id: 'c2'},
            {id: 'd1', __draft: true},
            {id: 'd2', __draft: true},
          ],
        }));

        element._removeComment({id: 'd2'});
        assert.deepEqual(JSON.stringify(element._comments), JSON.stringify({
          meta: {
            changeNum: '42',
            patchRange: {
              basePatchNum: 'PARENT',
              patchNum: 3,
            },
            path: '/path/to/foo',
            projectConfig: {foo: 'bar'},
          },
          left: [
            {id: 'bc1', side: 'PARENT'},
            {id: 'bd1', __draft: true, side: 'PARENT'},
            {id: 'bd2', __draft: true, side: 'PARENT'},
          ],
          right: [
            {id: 'c1'},
            {id: 'c2'},
            {id: 'd1', __draft: true},
          ],
        }));
      });

      test('renders image diffs', function(done) {
        var mockDiff = {
          meta_a: {name: 'carrot.jpg', content_type: 'image/jpeg', lines: 66},
          meta_b: {name: 'carrot.jpg', content_type: 'image/jpeg', lines: 560},
          intraline_status: 'OK',
          change_type: 'MODIFIED',
          diff_header: [
            'diff --git a/carrot.jpg b/carrot.jpg',
            'index 2adc47d..f9c2f2c 100644',
            '--- a/carrot.jpg',
            '+++ b/carrot.jpg',
            'Binary files differ',
          ],
          content: [{skip: 66}],
          binary: true,
        };
        var mockFile1 = {
          body: 'Qk06AAAAAAAAADYAAAAoAAAAAQAAAP////8BACAAAAAAAAAAAAATCwAAEwsA' +
              'AAAAAAAAAAAAAAAA/w==',
          type: 'image/bmp',
        };
        var mockFile2 = {
          body: 'Qk06AAAAAAAAADYAAAAoAAAAAQAAAP////8BACAAAAAAAAAAAAATCwAAEwsA' +
              'AAAAAAAAAAAA/////w==',
          type: 'image/bmp'
        };
        var mockCommit = {
          commit: '9a1a1d10baece5efbba10bc4ccf808a67a50ac0a',
          parents: [{
            commit: '7338aa9adfe57909f1fdaf88975cdea467d3382f',
            subject: 'Added a carrot',
          }],
          author: {
            name: 'Wyatt Allen',
            email: 'wyatta@google.com',
            date: '2016-05-23 21:44:51.000000000',
            tz: -420,
          },
          committer: {
            name: 'Wyatt Allen',
            email: 'wyatta@google.com',
            date: '2016-05-25 00:25:41.000000000',
            tz: -420,
          },
          subject: 'Updated the carrot',
          message: 'Updated the carrot\n\nChange-Id: Iabcd123\n',
        };
        var mockComments = {baseComments: [], comments: []};

        var stubs = [];
        stubs.push(sinon.stub(element, '_getDiff',
            function() { return Promise.resolve(mockDiff); }));
        stubs.push(sinon.stub(element.$.restAPI, 'getCommitInfo',
            function() { return Promise.resolve(mockCommit); }));
        stubs.push(sinon.stub(element.$.restAPI,
            'getCommitFileContents',
            function() { return Promise.resolve(mockFile1); }));
        stubs.push(sinon.stub(element.$.restAPI,
            'getChangeFileContents',
            function() { return Promise.resolve(mockFile2); }));
        stubs.push(sinon.stub(element.$.restAPI, '_getDiffComments',
            function() { return Promise.resolve(mockComments); }));
        stubs.push(sinon.stub(element.$.restAPI, 'getDiffDrafts',
            function() { return Promise.resolve(mockComments); }));

        element.patchRange = {basePatchNum: 'PARENT', patchNum: 1};

        var rendered = function() {
          // Recognizes that it should be an image diff.
          assert.isTrue(element.isImageDiff);
          assert.instanceOf(element.$.diffBuilder._builder, GrDiffBuilderImage);

          // Left image rendered with the parent commit's version of the file.
          var leftInmage = element.$.diffTable.querySelector('td.left img');
          assert.isOk(leftInmage);
          assert.equal(leftInmage.getAttribute('src'),
              'data:image/bmp;base64, ' + mockFile1.body);

          // Right image rendered with this change's revision of the image.
          var rightInmage = element.$.diffTable.querySelector('td.right img');
          assert.isOk(rightInmage);
          assert.equal(rightInmage.getAttribute('src'),
              'data:image/bmp;base64, ' + mockFile2.body);

          // Cleanup.
          element.removeEventListener('render', rendered);
          stubs.forEach(function(stub) { stub.restore(); });

          done();
        };

        element.addEventListener('render', rendered);

        element.$.restAPI.getDiffPreferences().then(function(prefs) {
          element.prefs = prefs;
          element.reload();
        });
      });

      test('_handleTap lineNum', function(done) {
        var addDraftStub = sinon.stub(element, 'addDraftAtLine');
        var el = document.createElement('div');
        el.className = 'lineNum';
        el.addEventListener('click', function(e) {
          element._handleTap(e);
          assert.isTrue(addDraftStub.called);
          assert.equal(addDraftStub.lastCall.args[0], el);
          done();
        });
        el.click();
      });

      test('_handleTap context', function(done) {
        var showContextStub = sinon.stub(element.$.diffBuilder, 'showContext');
        var el = document.createElement('div');
        el.className = 'showContext';
        el.addEventListener('click', function(e) {
          element._handleTap(e);
          assert.isTrue(showContextStub.called);
          done();
        });
        el.click();
      });

      test('_handleTap content', function(done) {
        var content = document.createElement('div');
        var lineEl = document.createElement('div');

        var selectStub = sinon.stub(element, '_selectLine');
        var getLineStub = sinon.stub(element.$.diffBuilder, 'getLineElByChild',
            function() { return lineEl; });

        content.className = 'content';
        content.addEventListener('click', function(e) {
          element._handleTap(e);
          assert.isTrue(selectStub.called);
          assert.equal(selectStub.lastCall.args[0], lineEl);
          selectStub.restore();
          getLineStub.restore();
          done();
        });
        content.click();
      });

      test('_getDiff handles null diff responses', function(done) {
        stub('gr-rest-api-interface', {
          getDiff: function() { return Promise.resolve(null); },
        });
        element.changeNum = 123;
        element.patchRange = {basePatchNum: 1, patchNum: 2};
        element.path = 'file.txt';
        element._getDiff().then(done);
      });
    });

    suite('logged in', function() {
      setup(function() {
        stub('gr-rest-api-interface', {
          getLoggedIn: function() { return Promise.resolve(true); },
          getPreferences: function() {
            return Promise.resolve({time_format: 'HHMM_12'});
          },
        });
        element = fixture('basic');
      });

      test('get drafts', function(done) {
        element.patchRange = {basePatchNum: 0, patchNum: 0};
        var draftsResponse = {
          baseComments: [{id: 'foo'}],
          comments: [{id: 'bar'}],
        };
        var getDraftsStub = sinon.stub(element.$.restAPI, 'getDiffDrafts',
            function() { return Promise.resolve(draftsResponse); });
        element._getDiffDrafts().then(function(result) {
          assert.deepEqual(result, draftsResponse);
          getDraftsStub.restore();
          done();
        });
      });

      test('get comments and drafts', function(done) {
        var comments = {
          baseComments: [
            {id: 'bc1'},
            {id: 'bc2'},
          ],
          comments: [
            {id: 'c1'},
            {id: 'c2'},
          ],
        };
        var diffCommentsStub = sinon.stub(element, '_getDiffComments',
            function() { return Promise.resolve(comments); });

        var drafts = {
          baseComments: [
            {id: 'bd1'},
            {id: 'bd2'},
          ],
          comments: [
            {id: 'd1'},
            {id: 'd2'},
          ],
        };
        var diffDraftsStub = sinon.stub(element, '_getDiffDrafts',
            function() { return Promise.resolve(drafts); });

        element.changeNum = '42';
        element.patchRange = {
          basePatchNum: 'PARENT',
          patchNum: 3,
        };
        element.path = '/path/to/foo';
        element.projectConfig = {foo: 'bar'};

        element._getDiffCommentsAndDrafts().then(function(result) {
          assert.deepEqual(result, {
            meta: {
              changeNum: '42',
              patchRange: {
                basePatchNum: 'PARENT',
                patchNum: 3,
              },
              path: '/path/to/foo',
              projectConfig: {foo: 'bar'},
            },
            left: [
              {id: 'bc1'},
              {id: 'bc2'},
              {id: 'bd1', __draft: true},
              {id: 'bd2', __draft: true},
            ],
            right: [
              {id: 'c1'},
              {id: 'c2'},
              {id: 'd1', __draft: true},
              {id: 'd2', __draft: true},
            ],
          });

          diffCommentsStub.restore();
          diffDraftsStub.restore();
          done();
        });
      });

      suite('handle comment-update', function() {

        setup(function() {
          element._comments = {
            meta: {
              changeNum: '42',
              patchRange: {
                basePatchNum: 'PARENT',
                patchNum: 3,
              },
              path: '/path/to/foo',
              projectConfig: {foo: 'bar'},
            },
            left: [
              {id: 'bc1', side: 'PARENT'},
              {id: 'bc2', side: 'PARENT'},
              {id: 'bd1', __draft: true, side: 'PARENT'},
              {id: 'bd2', __draft: true, side: 'PARENT'},
            ],
            right: [
              {id: 'c1'},
              {id: 'c2'},
              {id: 'd1', __draft: true},
              {id: 'd2', __draft: true},
            ],
          };
        });

        test('creating a draft', function() {
          var comment = {__draft: true, __draftID: 'tempID', side: 'PARENT'};
          element.fire('comment-update', {comment: comment});
          assert.include(element._comments.left, comment);
        });

        test('saving a draft', function() {
          var draftID = 'tempID';
          var id = 'savedID';
          element._comments.left.push(
              {__draft: true, __draftID: draftID, side: 'PARENT'});
          element.fire('comment-update', {comment:
              {id: id, __draft: true, __draftID: draftID, side: 'PARENT'},
          });
          var drafts = element._comments.left.filter(function(item) {
            return item.__draftID === draftID;
          });
          assert.equal(drafts.length, 1);
          assert.equal(drafts[0].id, id);
        });

        test('_handleShowDiff reloads when expanded is made true',
            function(done) {
          element.expanded = false;
          element.changeNum = element._comments.meta.changeNum;
          element.patchRange = element._comments.meta.patchRange;
          element.path = element._comments.meta.path;

          var stub = sinon.stub(element, 'reload', function() {
            assert.isTrue(stub.called);
            stub.restore();
            done();
          });
          var spy = sinon.spy(element, '_handleShowDiff');
          element.set('expanded', true);
          assert.isTrue(spy.called);
        });
      });
    });
  });
</script>