<!DOCTYPE html>
<!--
@license
Copyright (C) 2016 The Android Open Source Project

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->

<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="/test/common-test-setup.js"></script>
<script src="/bower_components/webcomponentsjs/custom-elements-es5-adapter.js"></script>

<script src="/bower_components/webcomponentsjs/webcomponents-lite.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;
    let ctr = 0;

    setup(() => {
      // Modify CANONICAL_PATH to effectively reset cache.
      ctr += 1;
      window.CANONICAL_PATH = `test${ctr}`;

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

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

    suite('fetchJSON()', () => {
      test('Sets header to accept application/json', () => {
        const authFetchStub = sandbox.stub(element._auth, 'fetch')
            .returns(Promise.resolve());
        element._fetchJSON({url: '/dummy/url'});
        assert.isTrue(authFetchStub.called);
        assert.equal(authFetchStub.lastCall.args[1].headers.get('Accept'),
            'application/json');
      });

      test('Use header option accept when provided', () => {
        const authFetchStub = sandbox.stub(element._auth, 'fetch')
            .returns(Promise.resolve());
        const headers = new Headers();
        headers.append('Accept', '*/*');
        const fetchOptions = {headers};
        element._fetchJSON({url: '/dummy/url', fetchOptions});
        assert.isTrue(authFetchStub.called);
        assert.equal(authFetchStub.lastCall.args[1].headers.get('Accept'),
            '*/*');
      });
    });

    test('JSON prefix is properly removed', done => {
      element._fetchJSON({url: '/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(new Error('foo'));
      element._cache.set('/foo', promise);
      element._fetchSharedCacheURL({url: '/foo'}).catch(p => {
        assert.equal(p.message, 'foo');
        done();
      });
    });

    test('cache invalidation', () => {
      element._cache.set('/foo/bar', 1);
      element._cache.set('/bar', 2);
      element._sharedFetchPromises['/foo/bar'] = 3;
      element._sharedFetchPromises['/bar'] = 4;
      element._invalidateSharedFetchPromisesPrefix('/foo/');
      assert.isFalse(element._cache.has('/foo/bar'));
      assert.isTrue(element._cache.has('/bar'));
      assert.isUndefined(element._sharedFetchPromises['/foo/bar']);
      assert.strictEqual(4, element._sharedFetchPromises['/bar']);
    });

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

      url = element._urlWithParams('/path/', {
        sp: 'hola',
        en: ['hey', 'hi'],
      });
      assert.equal(url, window.CANONICAL_PATH + '/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, window.CANONICAL_PATH + '/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; },
        },
      }));
      const cancelCondition = () => { return true; };
      element._fetchJSON({url: '/dummy/url', cancelCondition}).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', request => {
        const url = request.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 resolve_fetchJSON;
      setup(() => {
        sandbox.stub(element, '_fetchJSON').returns(
            new Promise(resolve => {
              resolve_fetchJSON = resolve;
            }));
      });

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

      test('rebase on current', done => {
        element.getChangeRevisionActions('42', '1337').then(
            response => {
              assert.isTrue(response.rebase.enabled);
              assert.isTrue(response.rebase.rebaseOnCurrent);
              done();
            });
        resolve_fetchJSON({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(new Error('Failed to fetch')));
      window.fetch.onSecondCall().returns(Promise.resolve(fakeAuthResponse));
      // Emulate logged in.
      element._cache.set('/accounts/self/detail', {});
      const serverErrorStub = sandbox.stub();
      element.addEventListener('server-error', serverErrorStub);
      const authErrorStub = sandbox.stub();
      element.addEventListener('auth-error', authErrorStub);
      element._fetchJSON({url: '/bar'}).finally(r => {
        flush(() => {
          assert.isTrue(authErrorStub.called);
          assert.isFalse(serverErrorStub.called);
          assert.isFalse(element._cache.has('/accounts/self/detail'));
          done();
        });
      });
    });

    test('auth failure - test all failed to fetch', done => {
      window.fetch.returns(
          Promise.reject(new Error('Failed to fetch')));
      // Emulate logged in.
      element._cache.set('/accounts/self/detail', {});
      const serverErrorStub = sandbox.stub();
      element.addEventListener('server-error', serverErrorStub);
      const authErrorStub = sandbox.stub();
      element.addEventListener('auth-error', authErrorStub);
      element._fetchJSON({url: '/bar'}).finally(r => {
        flush(() => {
          assert.isTrue(authErrorStub.called);
          assert.isFalse(serverErrorStub.called);
          assert.isFalse(element._cache.has('/accounts/self/detail'));
          done();
        });
      });
    });

    test('getLoggedIn returns false when network/auth failure', done => {
      window.fetch.returns(
          Promise.reject(new Error('Failed to fetch')));
      element.getLoggedIn().then(isLoggedIn => {
        assert.isFalse(isLoggedIn);
        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 === window.CANONICAL_PATH + '/accounts/self/detail') {
          return Promise.resolve(responses.shift());
        }
      });

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

    test('checkCredentials promise rejection', () => {
      window.fetch.restore();
      element._cache.set('/accounts/self/detail', true);
      sandbox.spy(element, 'checkCredentials');
      sandbox.stub(window, 'fetch', url => {
        return Promise.reject(new Error('Failed to fetch'));
      });
      return element.getConfig(true)
          .catch(err => undefined)
          .then(() => {
            // When the top-level fetch call throws an error, it invokes
            // checkCredentials, which in turn makes another fetch call.
            // The second fetch call also fails, which leads to a second
            // invocation of checkCredentials, which should immediately
            // return instead of making further fetch calls.
            assert.isTrue(element.checkCredentials.calledTwice);
            assert.isTrue(window.fetch.calledTwice);
          });
    });

    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.lastCall.args[0].params.S, 0);
    });

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

    test('getAccount when resp is null does not add anything to the cache',
        done => {
          const cacheKey = '/accounts/self/detail';
          const stub = sandbox.stub(element, '_fetchSharedCacheURL',
              () => Promise.resolve());

          element.getAccount().then(() => {
            assert.isTrue(element._fetchSharedCacheURL.called);
            assert.isFalse(element._cache.has(cacheKey));
            done();
          });

          element._cache.set(cacheKey, 'fake cache');
          stub.lastCall.args[0].errFn();
        });

    test('getAccount does not add to the cache when resp.status is 403',
        done => {
          const cacheKey = '/accounts/self/detail';
          const stub = sandbox.stub(element, '_fetchSharedCacheURL',
              () => Promise.resolve());

          element.getAccount().then(() => {
            assert.isTrue(element._fetchSharedCacheURL.called);
            assert.isFalse(element._cache.has(cacheKey));
            done();
          });
          element._cache.set(cacheKey, 'fake cache');
          stub.lastCall.args[0].errFn({status: 403});
        });

    test('getAccount when resp is successful', done => {
      const cacheKey = '/accounts/self/detail';
      const stub = sandbox.stub(element, '_fetchSharedCacheURL',
          () => Promise.resolve());

      element.getAccount().then(response => {
        assert.isTrue(element._fetchSharedCacheURL.called);
        assert.equal(element._cache.get(cacheKey), 'fake cache');
        done();
      });
      element._cache.set(cacheKey, 'fake cache');

      stub.lastCall.args[0].errFn({});
    });

    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[0].body.download_scheme, 'http');
    });

    test('getDiffPreferences returns correct defaults', done => {
      sandbox.stub(element, 'getLoggedIn', () => Promise.resolve(false));

      element.getDiffPreferences().then(obj => {
        assert.equal(obj.auto_hide_diff_table_header, true);
        assert.equal(obj.context, 10);
        assert.equal(obj.cursor_blink_rate, 0);
        assert.equal(obj.font_size, 12);
        assert.equal(obj.ignore_whitespace, 'IGNORE_NONE');
        assert.equal(obj.intraline_difference, true);
        assert.equal(obj.line_length, 100);
        assert.equal(obj.line_wrapping, false);
        assert.equal(obj.show_line_endings, true);
        assert.equal(obj.show_tabs, true);
        assert.equal(obj.show_whitespace_errors, true);
        assert.equal(obj.syntax_highlighting, true);
        assert.equal(obj.tab_size, 8);
        assert.equal(obj.theme, 'DEFAULT');
        done();
      });
    });

    test('saveDiffPreferences set show_tabs to false', () => {
      sandbox.stub(element, '_send');
      element.saveDiffPreferences({show_tabs: false});
      assert.isTrue(element._send.called);
      assert.equal(element._send.lastCall.args[0].body.show_tabs, false);
    });

    test('getEditPreferences returns correct defaults', done => {
      sandbox.stub(element, 'getLoggedIn', () => {
        return Promise.resolve(false);
      });

      element.getEditPreferences().then(obj => {
        assert.equal(obj.auto_close_brackets, false);
        assert.equal(obj.cursor_blink_rate, 0);
        assert.equal(obj.hide_line_numbers, false);
        assert.equal(obj.hide_top_menu, false);
        assert.equal(obj.indent_unit, 2);
        assert.equal(obj.indent_with_tabs, false);
        assert.equal(obj.key_map_type, 'DEFAULT');
        assert.equal(obj.line_length, 100);
        assert.equal(obj.line_wrapping, false);
        assert.equal(obj.match_brackets, true);
        assert.equal(obj.show_base, false);
        assert.equal(obj.show_tabs, true);
        assert.equal(obj.show_whitespace_errors, true);
        assert.equal(obj.syntax_highlighting, true);
        assert.equal(obj.tab_size, 8);
        assert.equal(obj.theme, 'DEFAULT');
        done();
      });
    });

    test('saveEditPreferences set show_tabs to false', () => {
      sandbox.stub(element, '_send');
      element.saveEditPreferences({show_tabs: false});
      assert.isTrue(element._send.called);
      assert.equal(element._send.lastCall.args[0].body.show_tabs, false);
    });

    test('confirmEmail', () => {
      sandbox.spy(element, '_send');
      element.confirmEmail('foo');
      assert.isTrue(element._send.calledOnce);
      assert.equal(element._send.lastCall.args[0].method, 'PUT');
      assert.equal(element._send.lastCall.args[0].url,
          '/config/server/email.confirm');
      assert.deepEqual(element._send.lastCall.args[0].body, {token: 'foo'});
    });

    test('setAccountStatus', () => {
      sandbox.stub(element, '_send').returns(Promise.resolve('OOO'));
      element._cache.set('/accounts/self/detail', {});
      return element.setAccountStatus('OOO').then(() => {
        assert.isTrue(element._send.calledOnce);
        assert.equal(element._send.lastCall.args[0].method, 'PUT');
        assert.equal(element._send.lastCall.args[0].url,
            '/accounts/self/status');
        assert.deepEqual(element._send.lastCall.args[0].body,
            {status: 'OOO'});
        assert.deepEqual(element._cache.get('/accounts/self/detail'),
            {status: 'OOO'});
      });
    });

    suite('draft comments', () => {
      test('_sendDiffDraftRequest 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());
        });
      });

      suite('_failForCreate200', () => {
        test('_sendDiffDraftRequest checks for 200 on create', () => {
          const sendPromise = Promise.resolve();
          sandbox.stub(element, '_getChangeURLAndSend').returns(sendPromise);
          const failStub = sandbox.stub(element, '_failForCreate200')
              .returns(Promise.resolve());
          return element._sendDiffDraftRequest('PUT', 123, 4, {}).then(() => {
            assert.isTrue(failStub.calledOnce);
            assert.isTrue(failStub.calledWithExactly(sendPromise));
          });
        });

        test('_sendDiffDraftRequest no checks for 200 on non create', () => {
          sandbox.stub(element, '_getChangeURLAndSend')
              .returns(Promise.resolve());
          const failStub = sandbox.stub(element, '_failForCreate200')
              .returns(Promise.resolve());
          return element._sendDiffDraftRequest('PUT', 123, 4, {id: '123'})
              .then(() => {
                assert.isFalse(failStub.called);
              });
        });

        test('_failForCreate200 fails on 200', done => {
          const result = {
            ok: true,
            status: 200,
            headers: {entries: () => [
              ['Set-CoOkiE', 'secret'],
              ['Innocuous', 'hello'],
            ]},
          };
          element._failForCreate200(Promise.resolve(result)).then(() => {
            assert.isTrue(false, 'Promise should not resolve');
          }).catch(e => {
            assert.isOk(e);
            assert.include(e.message, 'Saving draft resulted in HTTP 200');
            assert.include(e.message, 'hello');
            assert.notInclude(e.message, 'secret');
            done();
          });
        });

        test('_failForCreate200 does not fail on 201', done => {
          const result = {
            ok: true,
            status: 201,
            headers: {entries: () => []},
          };
          element._failForCreate200(Promise.resolve(result)).then(() => {
            done();
          }).catch(e => {
            assert.isTrue(false, 'Promise should not fail');
          });
        });
      });
    });

    test('saveChangeEdit', () => {
      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.set('/changes/' + change_num + '/edit/' + file_name, {});
      return element.saveChangeEdit(change_num, file_name, file_contents)
          .then(() => {
            assert.isTrue(element._send.calledOnce);
            assert.equal(element._send.lastCall.args[0].method, 'PUT');
            assert.equal(element._send.lastCall.args[0].url,
                '/changes/test~1/edit/' + file_name);
            assert.equal(element._send.lastCall.args[0].body, file_contents);
          });
    });

    test('putChangeCommitMessage', () => {
      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.set('/changes/' + change_num + '/message', {});
      return element.putChangeCommitMessage(change_num, message).then(() => {
        assert.isTrue(element._send.calledOnce);
        assert.equal(element._send.lastCall.args[0].method, 'PUT');
        assert.equal(element._send.lastCall.args[0].url,
            '/changes/test~1/message');
        assert.deepEqual(element._send.lastCall.args[0].body, {message});
      });
    });

    test('startWorkInProgress', () => {
      const sendStub = sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve('ok'));
      element.startWorkInProgress('42');
      assert.isTrue(sendStub.calledOnce);
      assert.equal(sendStub.lastCall.args[0].changeNum, '42');
      assert.equal(sendStub.lastCall.args[0].method, 'POST');
      assert.isNotOk(sendStub.lastCall.args[0].patchNum);
      assert.equal(sendStub.lastCall.args[0].endpoint, '/wip');
      assert.deepEqual(sendStub.lastCall.args[0].body, {});

      element.startWorkInProgress('42', 'revising...');
      assert.isTrue(sendStub.calledTwice);
      assert.equal(sendStub.lastCall.args[0].changeNum, '42');
      assert.equal(sendStub.lastCall.args[0].method, 'POST');
      assert.isNotOk(sendStub.lastCall.args[0].patchNum);
      assert.equal(sendStub.lastCall.args[0].endpoint, '/wip');
      assert.deepEqual(sendStub.lastCall.args[0].body,
          {message: 'revising...'});
    });

    test('startReview', () => {
      const sendStub = sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve({}));
      element.startReview('42', {message: 'Please review.'});
      assert.isTrue(sendStub.calledOnce);
      assert.equal(sendStub.lastCall.args[0].changeNum, '42');
      assert.equal(sendStub.lastCall.args[0].method, 'POST');
      assert.isNotOk(sendStub.lastCall.args[0].patchNum);
      assert.equal(sendStub.lastCall.args[0].endpoint, '/ready');
      assert.deepEqual(sendStub.lastCall.args[0].body,
          {message: 'Please review.'});
    });

    test('deleteComment', () => {
      const sendStub = sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve('some response'));
      return element.deleteComment('foo', 'bar', '01234', 'removal reason')
          .then(response => {
            assert.equal(response, 'some response');
            assert.isTrue(sendStub.calledOnce);
            assert.equal(sendStub.lastCall.args[0].changeNum, 'foo');
            assert.equal(sendStub.lastCall.args[0].method, 'POST');
            assert.equal(sendStub.lastCall.args[0].patchNum, 'bar');
            assert.equal(sendStub.lastCall.args[0].endpoint,
                '/comments/01234/delete');
            assert.deepEqual(sendStub.lastCall.args[0].body,
                {reason: 'removal reason'});
          });
    });

    test('createRepo encodes name', () => {
      const sendStub = sandbox.stub(element, '_send')
          .returns(Promise.resolve());
      return element.createRepo({name: 'x/y'}).then(() => {
        assert.isTrue(sendStub.calledOnce);
        assert.equal(sendStub.lastCall.args[0].url, '/projects/x%2Fy');
      });
    });

    test('queryChangeFiles', () => {
      const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
          .returns(Promise.resolve());
      return element.queryChangeFiles('42', 'edit', 'test/path.js').then(() => {
        assert.equal(fetchStub.lastCall.args[0].changeNum, '42');
        assert.equal(fetchStub.lastCall.args[0].endpoint,
            '/files?q=test%2Fpath.js');
        assert.equal(fetchStub.lastCall.args[0].patchNum, 'edit');
      });
    });

    test('normal use', () => {
      const defaultQuery = 'state%3Aactive%20OR%20state%3Aread-only';

      assert.equal(element._getReposUrl('test', 25),
          '/projects/?n=26&S=0&query=test');

      assert.equal(element._getReposUrl(null, 25),
          `/projects/?n=26&S=0&query=${defaultQuery}`);

      assert.equal(element._getReposUrl('test', 25, 25),
          '/projects/?n=26&S=25&query=test');
    });

    test('invalidateReposCache', () => {
      const url = '/projects/?n=26&S=0&query=test';

      element._cache.set(url, {});

      element.invalidateReposCache();

      assert.isUndefined(element._sharedFetchPromises[url]);

      assert.isFalse(element._cache.has(url));
    });

    suite('getRepos', () => {
      const defaultQuery = 'state%3Aactive%20OR%20state%3Aread-only';

      setup(() => {
        sandbox.stub(element, '_fetchSharedCacheURL');
      });

      test('normal use', () => {
        element.getRepos('test', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=test');

        element.getRepos(null, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            `/projects/?n=26&S=0&query=${defaultQuery}`);

        element.getRepos('test', 25, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=25&query=test');
      });

      test('with blank', () => {
        element.getRepos('test/test', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Atest%20AND%20inname%3Atest');
      });

      test('with hyphen', () => {
        element.getRepos('foo-bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('with leading hyphen', () => {
        element.getRepos('-bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Abar');
      });

      test('with trailing hyphen', () => {
        element.getRepos('foo-bar-', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('with underscore', () => {
        element.getRepos('foo_bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('with underscore', () => {
        element.getRepos('foo_bar', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/projects/?n=26&S=0&query=inname%3Afoo%20AND%20inname%3Abar');
      });

      test('hyphen only', () => {
        element.getRepos('-', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            `/projects/?n=26&S=0&query=${defaultQuery}`);
      });
    });

    test('_getGroupsUrl normal use', () => {
      assert.equal(element._getGroupsUrl('test', 25),
          '/groups/?n=26&S=0&m=test');

      assert.equal(element._getGroupsUrl(null, 25),
          '/groups/?n=26&S=0');

      assert.equal(element._getGroupsUrl('test', 25, 25),
          '/groups/?n=26&S=25&m=test');
    });

    test('invalidateGroupsCache', () => {
      const url = '/groups/?n=26&S=0&m=test';

      element._cache.set(url, {});

      element.invalidateGroupsCache();

      assert.isUndefined(element._sharedFetchPromises[url]);

      assert.isFalse(element._cache.has(url));
    });

    suite('getGroups', () => {
      setup(() => {
        sandbox.stub(element, '_fetchSharedCacheURL');
      });

      test('normal use', () => {
        element.getGroups('test', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=0&m=test');

        element.getGroups(null, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=0');

        element.getGroups('test', 25, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=25&m=test');
      });

      test('regex', () => {
        element.getGroups('^test.*', 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=0&r=%5Etest.*');

        element.getGroups('^test.*', 25, 25);
        assert.equal(element._fetchSharedCacheURL.lastCall.args[0].url,
            '/groups/?n=26&S=25&r=%5Etest.*');
      });
    });

    test('gerrit auth is used', () => {
      sandbox.stub(Gerrit.Auth, 'fetch').returns(Promise.resolve());
      element._fetchJSON({url: '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[0].params, {
          q: 'own',
          suggest: null,
        });
      });
    });

    suite('getChangeDetail', () => {
      suite('change detail options', () => {
        let toHexStub;

        setup(() => {
          toHexStub = sandbox.stub(element, 'listChangesOptionsToHex',
              options => 'deadbeef');
          sandbox.stub(element, '_getChangeDetail',
              async (changeNum, options) => ({changeNum, options}));
        });

        test('signed pushes disabled', async () => {
          const {PUSH_CERTIFICATES} = element.ListChangesOption;
          sandbox.stub(element, 'getConfig', async () => ({}));
          const {changeNum, options} = await element.getChangeDetail(123);
          assert.strictEqual(123, changeNum);
          assert.strictEqual('deadbeef', options);
          assert.isTrue(toHexStub.calledOnce);
          assert.isFalse(toHexStub.lastCall.args.includes(PUSH_CERTIFICATES));
        });

        test('signed pushes enabled', async () => {
          const {PUSH_CERTIFICATES} = element.ListChangesOption;
          sandbox.stub(element, 'getConfig', async () => {
            return {receive: {enable_signed_push: true}};
          });
          const {changeNum, options} = await element.getChangeDetail(123);
          assert.strictEqual(123, changeNum);
          assert.strictEqual('deadbeef', options);
          assert.isTrue(toHexStub.calledOnce);
          assert.isTrue(toHexStub.lastCall.args.includes(PUSH_CERTIFICATES));
        });
      });

      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('_getChangeDetail passes params to ETags decorator', () => {
        const changeNum = 4321;
        element._projectLookup[changeNum] = 'test';
        const expectedUrl =
            window.CANONICAL_PATH + '/changes/test~4321/detail?'+
            '0=5&1=1&2=6&3=7&4=1&5=4';
        sandbox.stub(element._etags, 'getOptions');
        sandbox.stub(element._etags, 'collect');
        return element._getChangeDetail(changeNum, '516714').then(() => {
          assert.isTrue(element._etags.getOptions.calledWithExactly(
              expectedUrl));
          assert.equal(element._etags.collect.lastCall.args[0], expectedUrl);
        });
      });

      test('_getChangeDetail calls errFn on 500', () => {
        const errFn = sinon.stub();
        sandbox.stub(element, 'getChangeActionURL')
            .returns(Promise.resolve(''));
        sandbox.stub(element, '_fetchRawJSON')
            .returns(Promise.resolve({ok: false, status: 500}));
        return element._getChangeDetail(123, '516714', errFn).then(() => {
          assert.isTrue(errFn.called);
        });
      });

      test('_getChangeDetail populates _projectLookup', () => {
        sandbox.stub(element, 'getChangeActionURL')
            .returns(Promise.resolve(''));
        sandbox.stub(element, '_fetchRawJSON')
            .returns(Promise.resolve({ok: true}));

        const mockResponse = {_number: 1, project: 'test'};
        sandbox.stub(element, '_readResponsePayload').returns(Promise.resolve({
          parsed: mockResponse,
          raw: JSON.stringify(mockResponse),
        }));
        return element._getChangeDetail(1, '516714').then(() => {
          assert.equal(Object.keys(element._projectLookup).length, 1);
          assert.equal(element._projectLookup[1], 'test');
        });
      });

      suite('_getChangeDetail ETag cache', () => {
        let requestUrl;
        let mockResponseSerial;
        let collectSpy;
        let getPayloadSpy;

        setup(() => {
          requestUrl = '/foo/bar';
          const mockResponse = {foo: 'bar', baz: 42};
          mockResponseSerial = element.JSON_PREFIX +
              JSON.stringify(mockResponse);
          sandbox.stub(element, '_urlWithParams').returns(requestUrl);
          sandbox.stub(element, 'getChangeActionURL')
              .returns(Promise.resolve(requestUrl));
          collectSpy = sandbox.spy(element._etags, 'collect');
          getPayloadSpy = sandbox.spy(element._etags, 'getCachedPayload');
        });

        test('contributes to cache', () => {
          sandbox.stub(element, '_fetchRawJSON').returns(Promise.resolve({
            text: () => Promise.resolve(mockResponseSerial),
            status: 200,
            ok: true,
          }));

          return element._getChangeDetail(123, '516714').then(detail => {
            assert.isFalse(getPayloadSpy.called);
            assert.isTrue(collectSpy.calledOnce);
            const cachedResponse = element._etags.getCachedPayload(requestUrl);
            assert.equal(cachedResponse, mockResponseSerial);
          });
        });

        test('uses cache on HTTP 304', () => {
          sandbox.stub(element, '_fetchRawJSON').returns(Promise.resolve({
            text: () => Promise.resolve(mockResponseSerial),
            status: 304,
            ok: true,
          }));

          return element._getChangeDetail(123, {}).then(detail => {
            assert.isFalse(collectSpy.called);
            assert.isTrue(getPayloadSpy.calledOnce);
          });
        });
      });
    });

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

    suite('getFromProjectLookup', () => {
      test('getChange fails', () => {
        sandbox.stub(element, 'getChange')
            .returns(Promise.resolve(null));
        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(null));
        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('_getChangeURLAndFetch', () => {
      element._projectLookup = {1: 'test'};
      const fetchStub = sandbox.stub(element, '_fetchJSON')
          .returns(Promise.resolve());
      const req = {changeNum: 1, endpoint: '/test', patchNum: 1};
      return element._getChangeURLAndFetch(req).then(() => {
        assert.equal(fetchStub.lastCall.args[0].url,
            '/changes/test~1/revisions/1/test');
      });
    });

    test('_getChangeURLAndSend', () => {
      element._projectLookup = {1: 'test'};
      const sendStub = sandbox.stub(element, '_send')
          .returns(Promise.resolve());

      const req = {
        changeNum: 1,
        method: 'POST',
        patchNum: 1,
        endpoint: '/test',
      };
      return element._getChangeURLAndSend(req).then(() => {
        assert.isTrue(sendStub.calledOnce);
        assert.equal(sendStub.lastCall.args[0].method, 'POST');
        assert.equal(sendStub.lastCall.args[0].url,
            '/changes/test~1/revisions/1/test');
      });
    });

    suite('reading responses', () => {
      test('_readResponsePayload', () => {
        const mockObject = {foo: 'bar', baz: 'foo'};
        const serial = element.JSON_PREFIX + JSON.stringify(mockObject);
        const mockResponse = {text: () => Promise.resolve(serial)};
        return element._readResponsePayload(mockResponse).then(payload => {
          assert.deepEqual(payload.parsed, mockObject);
          assert.equal(payload.raw, serial);
        });
      });

      test('_parsePrefixedJSON', () => {
        const obj = {x: 3, y: {z: 4}, w: 23};
        const serial = element.JSON_PREFIX + JSON.stringify(obj);
        const result = element._parsePrefixedJSON(serial);
        assert.deepEqual(result, obj);
      });
    });

    test('setChangeTopic', () => {
      const sendSpy = sandbox.spy(element, '_getChangeURLAndSend');
      return element.setChangeTopic(123, 'foo-bar').then(() => {
        assert.isTrue(sendSpy.calledOnce);
        assert.deepEqual(sendSpy.lastCall.args[0].body, {topic: 'foo-bar'});
      });
    });

    test('setChangeHashtag', () => {
      const sendSpy = sandbox.spy(element, '_getChangeURLAndSend');
      return element.setChangeHashtag(123, 'foo-bar').then(() => {
        assert.isTrue(sendSpy.calledOnce);
        assert.equal(sendSpy.lastCall.args[0].body, 'foo-bar');
      });
    });

    test('generateAccountHttpPassword', () => {
      const sendSpy = sandbox.spy(element, '_send');
      return element.generateAccountHttpPassword().then(() => {
        assert.isTrue(sendSpy.calledOnce);
        assert.deepEqual(sendSpy.lastCall.args[0].body, {generate: true});
      });
    });

    suite('getChangeFiles', () => {
      test('patch only', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        const range = {basePatchNum: 'PARENT', patchNum: 2};
        return element.getChangeFiles(123, range).then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 2);
          assert.isNotOk(fetchStub.lastCall.args[0].params);
        });
      });

      test('simple range', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        const range = {basePatchNum: 4, patchNum: 5};
        return element.getChangeFiles(123, range).then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.equal(fetchStub.lastCall.args[0].params.base, 4);
          assert.isNotOk(fetchStub.lastCall.args[0].params.parent);
        });
      });

      test('parent index', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        const range = {basePatchNum: -3, patchNum: 5};
        return element.getChangeFiles(123, range).then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.base);
          assert.equal(fetchStub.lastCall.args[0].params.parent, 3);
        });
      });
    });

    suite('getDiff', () => {
      test('patchOnly', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        return element.getDiff(123, 'PARENT', 2, 'foo/bar.baz').then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 2);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.parent);
          assert.isNotOk(fetchStub.lastCall.args[0].params.base);
        });
      });

      test('simple range', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        return element.getDiff(123, 4, 5, 'foo/bar.baz').then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.parent);
          assert.equal(fetchStub.lastCall.args[0].params.base, 4);
        });
      });

      test('parent index', () => {
        const fetchStub = sandbox.stub(element, '_getChangeURLAndFetch')
            .returns(Promise.resolve());
        return element.getDiff(123, -3, 5, 'foo/bar.baz').then(() => {
          assert.isTrue(fetchStub.calledOnce);
          assert.equal(fetchStub.lastCall.args[0].patchNum, 5);
          assert.isOk(fetchStub.lastCall.args[0].params);
          assert.isNotOk(fetchStub.lastCall.args[0].params.base);
          assert.equal(fetchStub.lastCall.args[0].params.parent, 3);
        });
      });
    });

    test('getDashboard', () => {
      const fetchStub = sandbox.stub(element, '_fetchSharedCacheURL');
      element.getDashboard('gerrit/project', 'default:main');
      assert.isTrue(fetchStub.calledOnce);
      assert.equal(
          fetchStub.lastCall.args[0].url,
          '/projects/gerrit%2Fproject/dashboards/default%3Amain');
    });

    test('getFileContent', () => {
      sandbox.stub(element, '_getChangeURLAndSend')
          .returns(Promise.resolve({
            ok: 'true',
            headers: {
              get(header) {
                if (header === 'X-FYI-Content-Type') {
                  return 'text/java';
                }
              },
            },
          }));

      sandbox.stub(element, 'getResponseObject')
          .returns(Promise.resolve('new content'));

      const edit = element.getFileContent('1', 'tst/path', 'EDIT').then(res => {
        assert.deepEqual(res,
            {content: 'new content', type: 'text/java', ok: true});
      });

      const normal = element.getFileContent('1', 'tst/path', '3').then(res => {
        assert.deepEqual(res,
            {content: 'new content', type: 'text/java', ok: true});
      });

      return Promise.all([edit, normal]);
    });

    test('getFileContent suppresses 404s', done => {
      const res = {status: 404};
      const handler = e => {
        assert.isFalse(e.detail.res.status === 404);
        done();
      };
      element.addEventListener('server-error', handler);
      sandbox.stub(Gerrit.Auth, 'fetch').returns(Promise.resolve(res));
      sandbox.stub(element, '_changeBaseURL').returns(Promise.resolve(''));
      element.getFileContent('1', 'tst/path', '1').then(() => {
        flushAsynchronousOperations();

        res.status = 500;
        element.getFileContent('1', 'tst/path', '1');
      });
    });

    test('getChangeFilesOrEditFiles is edit-sensitive', () => {
      const fn = element.getChangeOrEditFiles.bind(element);
      const getChangeFilesStub = sandbox.stub(element, 'getChangeFiles')
          .returns(Promise.resolve({}));
      const getChangeEditFilesStub = sandbox.stub(element, 'getChangeEditFiles')
          .returns(Promise.resolve({}));

      return fn('1', {patchNum: 'edit'}).then(() => {
        assert.isTrue(getChangeEditFilesStub.calledOnce);
        assert.isFalse(getChangeFilesStub.called);
        return fn('1', {patchNum: '1'}).then(() => {
          assert.isTrue(getChangeEditFilesStub.calledOnce);
          assert.isTrue(getChangeFilesStub.calledOnce);
        });
      });
    });

    test('_fetch forwards request and logs', () => {
      const logStub = sandbox.stub(element, '_logCall');
      const response = {status: 404, text: sinon.stub()};
      const url = 'my url';
      const fetchOptions = {method: 'DELETE'};
      sandbox.stub(element._auth, 'fetch').returns(Promise.resolve(response));
      const startTime = 123;
      sandbox.stub(Date, 'now').returns(startTime);
      const req = {url, fetchOptions};
      return element._fetch(req).then(() => {
        assert.isTrue(logStub.calledOnce);
        assert.isTrue(logStub.calledWith(req, startTime, response.status));
        assert.isFalse(response.text.called);
      });
    });

    test('_logCall only reports requests with anonymized URLss', () => {
      sandbox.stub(Date, 'now').returns(200);
      const handler = sinon.stub();
      element.addEventListener('rpc-log', handler);

      element._logCall({url: 'url'}, 100, 200);
      assert.isFalse(handler.called);

      element._logCall({url: 'url', anonymizedUrl: 'not url'}, 100, 200);
      flushAsynchronousOperations();
      assert.isTrue(handler.calledOnce);
    });

    test('saveChangeStarred', async () => {
      sandbox.stub(element, 'getFromProjectLookup')
          .returns(Promise.resolve('test'));
      const sendStub =
          sandbox.stub(element, '_send').returns(Promise.resolve());

      await element.saveChangeStarred(123, true);
      assert.isTrue(sendStub.calledOnce);
      assert.deepEqual(sendStub.lastCall.args[0], {
        method: 'PUT',
        url: '/accounts/self/starred.changes/test~123',
        anonymizedUrl: '/accounts/self/starred.changes/*',
      });

      await element.saveChangeStarred(456, false);
      assert.isTrue(sendStub.calledTwice);
      assert.deepEqual(sendStub.lastCall.args[0], {
        method: 'DELETE',
        url: '/accounts/self/starred.changes/test~456',
        anonymizedUrl: '/accounts/self/starred.changes/*',
      });
    });
  });
</script>