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

<link rel="import" href="gr-rest-api-interface.html">

<script>void(0);</script>

<test-fixture id="basic">
  <template>
    <gr-rest-api-interface></gr-rest-api-interface>
  </template>
</test-fixture>

<script>
  suite('gr-rest-api-interface tests', () => {
    let element;
    let sandbox;

    setup(() => {
      sandbox = sinon.sandbox.create();
      element = fixture('basic');
      element._cache = {};
      element._projectLookup = {};
      const testJSON = ')]}\'\n{"hello": "bonjour"}';
      sandbox.stub(window, 'fetch').returns(Promise.resolve({
        ok: true,
        text() {
          return Promise.resolve(testJSON);
        },
      }));
    });

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

    test('JSON prefix is properly removed', done => {
      element.fetchJSON('/dummy/url').then(obj => {
        assert.deepEqual(obj, {hello: 'bonjour'});
        done();
      });
    });

    test('cached results', done => {
      let n = 0;
      sandbox.stub(element, 'fetchJSON', () => {
        return Promise.resolve(++n);
      });
      const promises = [];
      promises.push(element._fetchSharedCacheURL('/foo'));
      promises.push(element._fetchSharedCacheURL('/foo'));
      promises.push(element._fetchSharedCacheURL('/foo'));

      Promise.all(promises).then(results => {
        assert.deepEqual(results, [1, 1, 1]);
        element._fetchSharedCacheURL('/foo').then(foo => {
          assert.equal(foo, 1);
          done();
        });
      });
    });

    test('cached promise', done => {
      const promise = Promise.reject('foo');
      element._cache['/foo'] = promise;
      element._fetchSharedCacheURL('/foo').catch(p => {
        assert.equal(p, 'foo');
        done();
      });
    });

    test('params are properly encoded', () => {
      let url = element._urlWithParams('/path/', {
        sp: 'hola',
        gr: 'guten tag',
        noval: null,
      });
      assert.equal(url, '/path/?sp=hola&gr=guten%20tag&noval');

      url = element._urlWithParams('/path/', {
        sp: 'hola',
        en: ['hey', 'hi'],
      });
      assert.equal(url, '/path/?sp=hola&en=hey&en=hi');

      // Order must be maintained with array params.
      url = element._urlWithParams('/path/', {
        l: ['c', 'b', 'a'],
      });
      assert.equal(url, '/path/?l=c&l=b&l=a');
    });

    test('request callbacks can be canceled', done => {
      let cancelCalled = false;
      window.fetch.returns(Promise.resolve({
        body: {
          cancel() { cancelCalled = true; },
        },
      }));
      element.fetchJSON('/dummy/url', null, () => { return true; }).then(
          obj => {
            assert.isUndefined(obj);
            assert.isTrue(cancelCalled);
            done();
          });
    });

    test('parent diff comments are properly grouped', done => {
      sandbox.stub(element, 'fetchJSON', () => {
        return Promise.resolve({
          '/COMMIT_MSG': [],
          'sieve.go': [
            {
              updated: '2017-02-03 22:32:28.000000000',
              message: 'this isn’t quite right',
            },
            {
              side: 'PARENT',
              message: 'how did this work in the first place?',
              updated: '2017-02-03 22:33:28.000000000',
            },
          ],
        });
      });
      element._getDiffComments('42', '', 'PARENT', 1, 'sieve.go').then(
          obj => {
            assert.equal(obj.baseComments.length, 1);
            assert.deepEqual(obj.baseComments[0], {
              side: 'PARENT',
              message: 'how did this work in the first place?',
              path: 'sieve.go',
              updated: '2017-02-03 22:33:28.000000000',
            });
            assert.equal(obj.comments.length, 1);
            assert.deepEqual(obj.comments[0], {
              message: 'this isn’t quite right',
              path: 'sieve.go',
              updated: '2017-02-03 22:32:28.000000000',
            });
            done();
          });
    });

    test('_setRange', () => {
      const comments = [
        {
          id: 1,
          side: 'PARENT',
          message: 'how did this work in the first place?',
          updated: '2017-02-03 22:32:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
        {
          id: 2,
          in_reply_to: 1,
          message: 'this isn’t quite right',
          updated: '2017-02-03 22:33:28.000000000',
        },
      ];
      const expectedResult = {
        id: 2,
        in_reply_to: 1,
        message: 'this isn’t quite right',
        updated: '2017-02-03 22:33:28.000000000',
        range: {
          start_line: 1,
          start_character: 1,
          end_line: 2,
          end_character: 1,
        },
      };
      const comment = comments[1];
      assert.deepEqual(element._setRange(comments, comment), expectedResult);
    });

    test('_setRanges', () => {
      const comments = [
        {
          id: 3,
          in_reply_to: 2,
          message: 'this isn’t quite right either',
          updated: '2017-02-03 22:34:28.000000000',
        },
        {
          id: 2,
          in_reply_to: 1,
          message: 'this isn’t quite right',
          updated: '2017-02-03 22:33:28.000000000',
        },
        {
          id: 1,
          side: 'PARENT',
          message: 'how did this work in the first place?',
          updated: '2017-02-03 22:32:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
      ];
      const expectedResult = [
        {
          id: 1,
          side: 'PARENT',
          message: 'how did this work in the first place?',
          updated: '2017-02-03 22:32:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
        {
          id: 2,
          in_reply_to: 1,
          message: 'this isn’t quite right',
          updated: '2017-02-03 22:33:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
        {
          id: 3,
          in_reply_to: 2,
          message: 'this isn’t quite right either',
          updated: '2017-02-03 22:34:28.000000000',
          range: {
            start_line: 1,
            start_character: 1,
            end_line: 2,
            end_character: 1,
          },
        },
      ];
      assert.deepEqual(element._setRanges(comments), expectedResult);
    });

    test('differing patch diff comments are properly grouped', done => {
      sandbox.stub(element, '_getFromProjectLookup')
          .returns(Promise.resolve('test'));
      sandbox.stub(element, 'fetchJSON', url => {
        if (url === '/changes/test~42/revisions/1') {
          return Promise.resolve({
            '/COMMIT_MSG': [],
            'sieve.go': [
              {
                message: 'this isn’t quite right',
                updated: '2017-02-03 22:32:28.000000000',
              },
              {
                side: 'PARENT',
                message: 'how did this work in the first place?',
                updated: '2017-02-03 22:33:28.000000000',
              },
            ],
          });
        } else if (url === '/changes/test~42/revisions/2') {
          return Promise.resolve({
            '/COMMIT_MSG': [],
            'sieve.go': [
              {
                message: 'What on earth are you thinking, here?',
                updated: '2017-02-03 22:32:28.000000000',
              },
              {
                side: 'PARENT',
                message: 'Yeah not sure how this worked either?',
                updated: '2017-02-03 22:33:28.000000000',
              },
              {
                message: '¯\\_(ツ)_/¯',
                updated: '2017-02-04 22:33:28.000000000',
              },
            ],
          });
        }
      });
      element._getDiffComments('42', '', 1, 2, 'sieve.go').then(
          obj => {
            assert.equal(obj.baseComments.length, 1);
            assert.deepEqual(obj.baseComments[0], {
              message: 'this isn’t quite right',
              path: 'sieve.go',
              updated: '2017-02-03 22:32:28.000000000',
            });
            assert.equal(obj.comments.length, 2);
            assert.deepEqual(obj.comments[0], {
              message: 'What on earth are you thinking, here?',
              path: 'sieve.go',
              updated: '2017-02-03 22:32:28.000000000',
            });
            assert.deepEqual(obj.comments[1], {
              message: '¯\\_(ツ)_/¯',
              path: 'sieve.go',
              updated: '2017-02-04 22:33:28.000000000',
            });
            done();
          });
    });

    test('special file path sorting', () => {
      assert.deepEqual(
          ['.b', '/COMMIT_MSG', '.a', 'file'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.a', '.b', 'file']);

      assert.deepEqual(
          ['.b', '/COMMIT_MSG', 'foo/bar/baz.cc', 'foo/bar/baz.h'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.b', 'foo/bar/baz.h', 'foo/bar/baz.cc']);

      assert.deepEqual(
          ['.b', '/COMMIT_MSG', 'foo/bar/baz.cc', 'foo/bar/baz.hpp'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.b', 'foo/bar/baz.hpp', 'foo/bar/baz.cc']);

      assert.deepEqual(
          ['.b', '/COMMIT_MSG', 'foo/bar/baz.cc', 'foo/bar/baz.hxx'].sort(
              element.specialFilePathCompare),
          ['/COMMIT_MSG', '.b', 'foo/bar/baz.hxx', 'foo/bar/baz.cc']);

      assert.deepEqual(
          ['foo/bar.h', 'foo/bar.hxx', 'foo/bar.hpp'].sort(
              element.specialFilePathCompare),
          ['foo/bar.h', 'foo/bar.hpp', 'foo/bar.hxx']);

      // Regression test for Issue 4448.
      assert.deepEqual(
          [
            'minidump/minidump_memory_writer.cc',
            'minidump/minidump_memory_writer.h',
            'minidump/minidump_thread_writer.cc',
            'minidump/minidump_thread_writer.h',
          ].sort(element.specialFilePathCompare),
          [
            'minidump/minidump_memory_writer.h',
            'minidump/minidump_memory_writer.cc',
            'minidump/minidump_thread_writer.h',
            'minidump/minidump_thread_writer.cc',
          ]);

      // Regression test for Issue 4545.
      assert.deepEqual(
          [
            'task_test.go',
            'task.go',
          ].sort(element.specialFilePathCompare),
          [
            'task.go',
            'task_test.go',
          ]);
    });

    suite('rebase action', () => {
      let resolveFetchJSON;
      setup(() => {
        sandbox.stub(element, 'fetchJSON').returns(
            new Promise(resolve => {
              resolveFetchJSON = resolve;
            }));
      });

      test('no rebase on current', done => {
        element.getChangeRevisionActions('42', '1337').then(
            response => {
              assert.isTrue(response.rebase.enabled);
              assert.isFalse(response.rebase.rebaseOnCurrent);
              done();
            });
        resolveFetchJSON({rebase: {}});
      });

      test('rebase on current', done => {
        element.getChangeRevisionActions('42', '1337').then(
            response => {
              assert.isTrue(response.rebase.enabled);
              assert.isTrue(response.rebase.rebaseOnCurrent);
              done();
            });
        resolveFetchJSON({rebase: {enabled: true}});
      });
    });


    test('server error', done => {
      const getResponseObjectStub = sandbox.stub(element, 'getResponseObject');
      window.fetch.returns(Promise.resolve({ok: false}));
      const serverErrorEventPromise = new Promise(resolve => {
        element.addEventListener('server-error', resolve);
      });

      element.fetchJSON().then(response => {
        assert.isUndefined(response);
        assert.isTrue(getResponseObjectStub.notCalled);
        serverErrorEventPromise.then(() => done());
      });
    });

    test('auth failure', done => {
      const fakeAuthResponse = {
        ok: false,
        status: 403,
      };
      window.fetch.onFirstCall().returns(
          Promise.reject({message: 'Failed to fetch'}));
      window.fetch.onSecondCall().returns(Promise.resolve(fakeAuthResponse));
      // Emulate logged in.
      element._cache['/accounts/self/detail'] = {};
      const serverErrorStub = sandbox.stub();
      element.addEventListener('server-error', serverErrorStub);
      const authErrorStub = sandbox.stub();
      element.addEventListener('auth-error', authErrorStub);
      element.fetchJSON('/bar').then(r => {
        flush(() => {
          assert.isTrue(authErrorStub.called);
          assert.isFalse(serverErrorStub.called);
          assert.isNull(element._cache['/accounts/self/detail']);
          done();
        });
      });
    });

    test('checkCredentials', done => {
      const responses = [
        {
          ok: false,
          status: 403,
          text() { return Promise.resolve(); },
        },
        {
          ok: true,
          status: 200,
          text() { return Promise.resolve(')]}\'{}'); },
        },
      ];
      window.fetch.restore();
      sandbox.stub(window, 'fetch', url => {
        if (url === '/accounts/self/detail') {
          return Promise.resolve(responses.shift());
        }
      });

      element.getLoggedIn().then(account => {
        assert.isNotOk(account);
        element.checkCredentials().then(account => {
          assert.isOk(account);
          done();
        });
      });
    });

    test('legacy n,z key in change url is replaced', () => {
      const stub = sandbox.stub(element, 'fetchJSON')
          .returns(Promise.resolve([]));
      element.getChanges(1, null, 'n,z');
      assert.equal(stub.args[0][3].S, 0);
    });

    test('saveDiffPreferences invalidates cache line', () => {
      const cacheKey = '/accounts/self/preferences.diff';
      sandbox.stub(element, 'send');
      element._cache[cacheKey] = {tab_size: 4};
      element.saveDiffPreferences({tab_size: 8});
      assert.isTrue(element.send.called);
      assert.notOk(element._cache[cacheKey]);
    });

    const preferenceSetup = function(testJSON, loggedIn, smallScreen) {
      sandbox.stub(element, 'getLoggedIn', () => {
        return Promise.resolve(loggedIn);
      });
      sandbox.stub(element, '_isNarrowScreen', () => {
        return smallScreen;
      });
      sandbox.stub(element, '_fetchSharedCacheURL', () => {
        return Promise.resolve(testJSON);
      });
    };

    test('getPreferences returns correctly on small screens logged in',
        done => {
          const testJSON = {diff_view: 'SIDE_BY_SIDE'};
          const loggedIn = true;
          const smallScreen = true;

          preferenceSetup(testJSON, loggedIn, smallScreen);

          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'UNIFIED_DIFF');
            assert.equal(obj.diff_view, 'SIDE_BY_SIDE');
            done();
          });
        });

    test('getPreferences returns correctly on small screens not logged in',
        done => {
          const testJSON = {diff_view: 'SIDE_BY_SIDE'};
          const loggedIn = false;
          const smallScreen = true;

          preferenceSetup(testJSON, loggedIn, smallScreen);
          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'UNIFIED_DIFF');
            assert.equal(obj.diff_view, 'SIDE_BY_SIDE');
            done();
          });
        });

    test('getPreferences returns correctly on larger screens logged in',
        done => {
          const testJSON = {diff_view: 'UNIFIED_DIFF'};
          const loggedIn = true;
          const smallScreen = false;

          preferenceSetup(testJSON, loggedIn, smallScreen);

          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'UNIFIED_DIFF');
            assert.equal(obj.diff_view, 'UNIFIED_DIFF');
            done();
          });
        });

    test('getPreferences returns correctly on larger screens not logged in',
        done => {
          const testJSON = {diff_view: 'UNIFIED_DIFF'};
          const loggedIn = false;
          const smallScreen = false;

          preferenceSetup(testJSON, loggedIn, smallScreen);

          element.getPreferences().then(obj => {
            assert.equal(obj.default_diff_view, 'SIDE_BY_SIDE');
            assert.equal(obj.diff_view, 'SIDE_BY_SIDE');
            done();
          });
        });

    test('savPreferences normalizes download scheme', () => {
      sandbox.stub(element, 'send');
      element.savePreferences({download_scheme: 'HTTP'});
      assert.isTrue(element.send.called);
      assert.equal(element.send.lastCall.args[2].download_scheme, 'http');
    });

    test('confirmEmail', () => {
      sandbox.spy(element, 'send');
      element.confirmEmail('foo');
      assert.isTrue(element.send.calledWith(
          'PUT', '/config/server/email.confirm', {token: 'foo'}));
    });

    test('GrReviewerUpdatesParser.parse is used', () => {
      sandbox.stub(GrReviewerUpdatesParser, 'parse').returns(
          Promise.resolve('foo'));
      return element.getChangeDetail(42).then(result => {
        assert.isTrue(GrReviewerUpdatesParser.parse.calledOnce);
        assert.equal(result, 'foo');
      });
    });

    test('setAccountStatus', done => {
      sandbox.stub(element, 'send').returns(Promise.resolve('OOO'));
      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve('OOO'));
      element._cache['/accounts/self/detail'] = {};
      element.setAccountStatus('OOO').then(() => {
        assert.isTrue(element.send.calledWith('PUT', '/accounts/self/status',
            {status: 'OOO'}));
        assert.deepEqual(element._cache['/accounts/self/detail'],
            {status: 'OOO'});
        done();
      });
    });

    test('_sendDiffDraft pending requests tracked', () => {
      const obj = element._pendingRequests;
      sandbox.stub(element, 'getChangeURLAndSend', () => mockPromise());
      assert.notOk(element.hasPendingDiffDrafts());

      element._sendDiffDraftRequest(null, null, null, {});
      assert.equal(obj.sendDiffDraft.length, 1);
      assert.isTrue(!!element.hasPendingDiffDrafts());

      element._sendDiffDraftRequest(null, null, null, {});
      assert.equal(obj.sendDiffDraft.length, 2);
      assert.isTrue(!!element.hasPendingDiffDrafts());

      for (const promise of obj.sendDiffDraft) { promise.resolve(); }

      return element.awaitPendingDiffDrafts().then(() => {
        assert.equal(obj.sendDiffDraft.length, 0);
        assert.isFalse(!!element.hasPendingDiffDrafts());
      });
    });

    test('saveChangeEdit', done => {
      element._projectLookup = {1: 'test'};
      const change_num = '1';
      const file_name = 'index.php';
      const file_contents = '<?php';
      sandbox.stub(element, 'send').returns(
          Promise.resolve([change_num, file_name, file_contents])
      );
      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve([change_num, file_name, file_contents]));
      element._cache['/changes/' + change_num + '/edit/' + file_name] = {};
      element.saveChangeEdit(change_num, file_name, file_contents).then(() => {
        assert.isTrue(element.send.calledWith('PUT',
            '/changes/test~1/edit/' + file_name,
            file_contents));
        done();
      });
    });

    test('putChangeCommitMessage', done => {
      element._projectLookup = {1: 'test'};
      const change_num = '1';
      const message = 'this is a commit message';
      sandbox.stub(element, 'send').returns(
          Promise.resolve([change_num, message])
      );
      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve([change_num, message]));
      element._cache['/changes/' + change_num + '/message'] = {};
      element.putChangeCommitMessage(change_num, message).then(() => {
        assert.isTrue(element.send.calledWith('PUT',
            '/changes/test~1/message', {message}));
        done();
      });
    });

    test('startWorkInProgress', () => {
      sandbox.stub(element, 'getChangeURLAndSend')
          .returns(Promise.resolve('ok'));
      element.startWorkInProgress('42');
      assert.isTrue(element.getChangeURLAndSend.calledWith(
          '42', 'POST', null, '/wip', {}));
      element.startWorkInProgress('42', 'revising...');
      assert.isTrue(element.getChangeURLAndSend.calledWith(
          '42', 'POST', null, '/wip', {message: 'revising...'}));
    });

    test('startReview', () => {
      sandbox.stub(element, 'getChangeURLAndSend')
          .returns(Promise.resolve({}));
      element.startReview('42', {message: 'Please review.'});
      assert.isTrue(element.getChangeURLAndSend.calledWith(
          '42', 'POST', null, '/ready', {message: 'Please review.'}));
    });

    test('deleteComment', done => {
      sandbox.stub(element, 'getChangeURLAndSend').returns(Promise.resolve());
      sandbox.stub(element, 'getResponseObject').returns('some response');
      element.deleteComment('foo', 'bar', '01234', 'removal reason')
          .then(response => {
            assert.equal(response, 'some response');
            done();
          });
      assert.isTrue(element.getChangeURLAndSend.calledWith(
          'foo', 'POST', 'bar', '/comments/01234/delete',
          {reason: 'removal reason'}));
    });

    test('createProject encodes name', () => {
      const sendStub = sandbox.stub(element, 'send');
      element.createProject({name: 'x/y'});
      assert.equal(sendStub.lastCall.args[1], '/projects/x%2Fy');
    });

    test('getProjects', () => {
      sandbox.stub(element, '_fetchSharedCacheURL');
      element.getProjects('test', 25);
      assert.isTrue(element._fetchSharedCacheURL.lastCall
          .calledWithExactly('/projects/?d&n=26&S=0&m=test'));

      element.getProjects(null, 25);
      assert.isTrue(element._fetchSharedCacheURL.lastCall
          .calledWithExactly('/projects/?d&n=26&S=0'));

      element.getProjects('test', 25, 25);
      assert.isTrue(element._fetchSharedCacheURL.lastCall
          .calledWithExactly('/projects/?d&n=26&S=25&m=test'));
    });

    test('getProjects filter', () => {
      sandbox.stub(element, '_fetchSharedCacheURL');
      element.getProjects('test/test/test', 25);
      assert.isTrue(element._fetchSharedCacheURL.lastCall
          .calledWithExactly('/projects/?d&n=26&S=0&m=test%2Ftest%2Ftest'));
    });

    test('getProjects filter regex', () => {
      sandbox.stub(element, '_fetchSharedCacheURL');
      element.getProjects('^test.*', 25);
      assert.isTrue(element._fetchSharedCacheURL.lastCall
          .calledWithExactly('/projects/?d&n=26&S=0&r=%5Etest.*'));
    });

    test('getGroups filter regex', () => {
      sandbox.stub(element, '_fetchSharedCacheURL');
      element.getGroups('^test.*', 25);
      assert.isTrue(element._fetchSharedCacheURL.lastCall
          .calledWithExactly('/groups/?n=26&S=0&r=%5Etest.*'));
    });

    test('gerrit auth is used', () => {
      sandbox.stub(Gerrit.Auth, 'fetch').returns(Promise.resolve());
      element.fetchJSON('foo');
      assert(Gerrit.Auth.fetch.called);
    });

    test('getSuggestedAccounts does not return fetchJSON', () => {
      const fetchJSONSpy = sandbox.spy(element, 'fetchJSON');
      return element.getSuggestedAccounts().then(accts => {
        assert.isFalse(fetchJSONSpy.called);
        assert.equal(accts.length, 0);
      });
    });

    test('fetchJSON gets called by getSuggestedAccounts', () => {
      const fetchJSONStub = sandbox.stub(element, 'fetchJSON',
          () => Promise.resolve());
      return element.getSuggestedAccounts('own').then(() => {
        assert.deepEqual(fetchJSONStub.lastCall.args[3], {
          q: 'own',
          suggest: null,
        });
      });
    });

    test('_getChangeDetail passes params to ETags decorator', () => {
      const changeNum = 4321;
      element._projectLookup[changeNum] = 'test';
      const params = {foo: 'bar'};
      const expectedUrl = '/changes/test~4321/detail?foo=bar';
      sandbox.stub(element._etags, 'getOptions');
      sandbox.stub(element._etags, 'collect');
      return element._getChangeDetail(changeNum, params).then(() => {
        assert.isTrue(element._etags.getOptions.calledWithExactly(expectedUrl));
        assert.equal(element._etags.collect.lastCall.args[0], expectedUrl);
      });
    });

    test('setInProjectLookup', () => {
      element.setInProjectLookup('test', 'project');
      assert.deepEqual(element._projectLookup, {test: 'project'});
    });

    suite('_getFromProjectLookup', () => {
      test('getChange fails', () => {
        sandbox.stub(element, 'getChange')
            .returns(Promise.resolve());
        return element._getFromProjectLookup().then(val => {
          assert.strictEqual(val, undefined);
          assert.deepEqual(element._projectLookup, {});
        });
      });

      test('getChange succeeds, no project', () => {
        sandbox.stub(element, 'getChange')
            .returns(Promise.resolve({}));
        return element._getFromProjectLookup().then(val => {
          assert.strictEqual(val, undefined);
          assert.deepEqual(element._projectLookup, {});
        });
      });

      test('getChange succeeds with project', () => {
        sandbox.stub(element, 'getChange')
            .returns(Promise.resolve({project: 'project'}));
        return element._getFromProjectLookup('test').then(val => {
          assert.equal(val, 'project');
          assert.deepEqual(element._projectLookup, {test: 'project'});
        });
      });
    });

    suite('getChanges populates _projectLookup', () => {
      test('multiple queries', () => {
        sandbox.stub(element, 'fetchJSON')
            .returns(Promise.resolve([
              [
                {_number: 1, project: 'test'},
                {_number: 2, project: 'test'},
              ], [
                {_number: 3, project: 'test/test'},
              ],
            ]));
        // When opt_query instanceof Array, fetchJSON returns
        // Array<Array<Object>>.
        return element.getChanges(null, []).then(() => {
          assert.equal(Object.keys(element._projectLookup).length, 3);
          assert.equal(element._projectLookup[1], 'test');
          assert.equal(element._projectLookup[2], 'test');
          assert.equal(element._projectLookup[3], 'test/test');
        });
      });

      test('no query', () => {
        sandbox.stub(element, 'fetchJSON')
            .returns(Promise.resolve([
              {_number: 1, project: 'test'},
              {_number: 2, project: 'test'},
              {_number: 3, project: 'test/test'},
            ]));

        // When opt_query !instanceof Array, fetchJSON returns
        // Array<Object>.
        return element.getChanges().then(() => {
          assert.equal(Object.keys(element._projectLookup).length, 3);
          assert.equal(element._projectLookup[1], 'test');
          assert.equal(element._projectLookup[2], 'test');
          assert.equal(element._projectLookup[3], 'test/test');
        });
      });
    });

    test('getChangeDetail populates _projectLookup', () => {
      sandbox.stub(element, '_fetchRawJSON').returns(Promise.resolve(true));
      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve({_number: 1, project: 'test'}));
      return element._getChangeDetail().then(() => {
        assert.equal(Object.keys(element._projectLookup).length, 1);
        assert.equal(element._projectLookup[1], 'test');
      });
    });

    test('_getChangeURLAndFetch', () => {
      element._projectLookup = {1: 'test'};
      const fetchStub = sandbox.stub(element, 'fetchJSON')
          .returns(Promise.resolve());
      return element._getChangeURLAndFetch(1, '/test', 1).then(() => {
        assert.isTrue(fetchStub.calledWith('/changes/test~1/revisions/1/test'));
      });
    });

    test('getChangeURLAndSend', () => {
      element._projectLookup = {1: 'test'};
      const sendStub = sandbox.stub(element, 'send').returns(Promise.resolve());
      return element.getChangeURLAndSend(1, 'POST', 1, '/test').then(() => {
        assert.isTrue(sendStub.calledWith('POST',
            '/changes/test~1/revisions/1/test'));
      });
    });
  });
</script>