/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

import {zoneSymbol} from '../../lib/common/utils';

describe('process related test', () => {
  let zoneA: Zone, result: any[];
  beforeEach(() => {
    zoneA = Zone.current.fork({name: 'zoneA'});
    result = [];
  });
  it('process.nextTick callback should in zone', (done) => {
    zoneA.run(function () {
      process.nextTick(() => {
        expect(Zone.current.name).toEqual('zoneA');
        done();
      });
    });
  });
  it('process.nextTick should be executed before macroTask and promise', (done) => {
    zoneA.run(function () {
      setTimeout(() => {
        result.push('timeout');
      }, 0);
      process.nextTick(() => {
        result.push('tick');
      });
      setTimeout(() => {
        expect(result).toEqual(['tick', 'timeout']);
        done();
      });
    });
  });
  it('process.nextTick should be treated as microTask', (done) => {
    let zoneTick = Zone.current.fork({
      name: 'zoneTick',
      onScheduleTask: (
        parentZoneDelegate: ZoneDelegate,
        currentZone: Zone,
        targetZone: Zone,
        task: Task,
      ): Task => {
        result.push({callback: 'scheduleTask', targetZone: targetZone.name, task: task.source});
        return parentZoneDelegate.scheduleTask(targetZone, task);
      },
      onInvokeTask: (
        parentZoneDelegate: ZoneDelegate,
        currentZone: Zone,
        targetZone: Zone,
        task: Task,
        applyThis?: any,
        applyArgs?: any,
      ): any => {
        result.push({callback: 'invokeTask', targetZone: targetZone.name, task: task.source});
        return parentZoneDelegate.invokeTask(targetZone, task, applyThis, applyArgs);
      },
    });
    zoneTick.run(() => {
      process.nextTick(() => {
        result.push('tick');
      });
    });
    setTimeout(() => {
      expect(result.length).toBe(3);
      expect(result[0]).toEqual({
        callback: 'scheduleTask',
        targetZone: 'zoneTick',
        task: 'process.nextTick',
      });
      expect(result[1]).toEqual({
        callback: 'invokeTask',
        targetZone: 'zoneTick',
        task: 'process.nextTick',
      });
      done();
    });
  });

  it('should support process.on(unhandledRejection)', async function () {
    return await jasmine.spyOnGlobalErrorsAsync(async () => {
      const hookSpy = jasmine.createSpy('hook');
      let p: any = null;
      (Zone as any)[zoneSymbol('ignoreConsoleErrorUncaughtError')] = true;
      Zone.current.fork({name: 'promise'}).run(function () {
        const listener = function (reason: any, promise: any) {
          hookSpy(promise, reason.message);
          process.removeListener('unhandledRejection', listener);
        };
        process.on('unhandledRejection', listener);
        p = new Promise((resolve, reject) => {
          throw new Error('promise error');
        });
      });
      return new Promise((res) => {
        setTimeout(function () {
          expect(hookSpy).toHaveBeenCalledWith(p, 'promise error');
          res();
        });
      });
    });
  });

  it('should support process.on(rejectionHandled)', async function () {
    return await jasmine.spyOnGlobalErrorsAsync(async () => {
      let p: any = null;
      (Zone as any)[zoneSymbol('ignoreConsoleErrorUncaughtError')] = true;
      let r: any = null;
      let p1: any = new Promise((res) => {
        r = res;
      });
      Zone.current.fork({name: 'promise'}).run(function () {
        const listener = function (promise: any) {
          expect(promise).toEqual(p);
          process.removeListener('rejectionHandled', listener);
          r();
        };
        process.on('rejectionHandled', listener);
        p = new Promise((resolve, reject) => {
          throw new Error('promise error');
        });
      });
      setTimeout(function () {
        p.catch((reason: any) => {});
      });
      return p1;
    });
  });

  it('should support multiple process.on(unhandledRejection)', async function () {
    await jasmine.spyOnGlobalErrorsAsync(async () => {
      const hookSpy = jasmine.createSpy('hook');
      (Zone as any)[zoneSymbol('ignoreConsoleErrorUncaughtError')] = true;
      let p: any = null;
      Zone.current.fork({name: 'promise'}).run(function () {
        const listener1 = function (reason: any, promise: any) {
          hookSpy(promise, reason.message);
          process.removeListener('unhandledRejection', listener1);
        };
        const listener2 = function (reason: any, promise: any) {
          hookSpy(promise, reason.message);
          process.removeListener('unhandledRejection', listener2);
        };
        process.on('unhandledRejection', listener1);
        process.on('unhandledRejection', listener2);
        p = new Promise((resolve, reject) => {
          throw new Error('promise error');
        });
      });
      return new Promise((res) =>
        setTimeout(function () {
          expect(hookSpy.calls.count()).toBe(2);
          expect(hookSpy.calls.allArgs()).toEqual([
            [p, 'promise error'],
            [p, 'promise error'],
          ]);
          res();
        }),
      );
    });
  });
});
