third_party/perfetto/ui/src/frontend/task_tracker_unittest.ts

// Copyright (C) 2020 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.

import {defer} from '../base/deferred';
import {TaskTracker} from './task_tracker';

test('it starts with no pending tasks', () => {
  const tracker = new TaskTracker();
  expect(tracker.hasPendingTasks()).toEqual(false);
  expect(tracker.progressMessage()).toEqual(undefined);
});

test('it knows if a task is pending', () => {
  const tracker = new TaskTracker();
  const deferred = defer();

  tracker.trackPromise(deferred, 'Some task');

  expect(tracker.hasPendingTasks()).toEqual(true);
  expect(tracker.progressMessage()).toEqual('Some task (0s)');
  deferred.resolve();
});