angular-cn/packages/router/test/operators/resolve_data.spec.ts

103 lines
3.5 KiB
TypeScript

/**
* @license
* Copyright Google Inc. 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 {Injector} from '@angular/core';
import {TestBed} from '@angular/core/testing';
import {EMPTY, of} from 'rxjs';
import {TestScheduler} from 'rxjs/testing';
import {resolveData} from '../../src/operators/resolve_data';
describe('resolveData operator', () => {
let testScheduler: TestScheduler;
let injector: Injector;
beforeEach(() => {
TestBed.configureTestingModule({
providers: [
{provide: 'resolveTwo', useValue: (a: any, b: any) => of(2)},
{provide: 'resolveFour', useValue: (a: any, b: any) => 4},
{provide: 'resolveEmpty', useValue: (a: any, b: any) => EMPTY},
]
});
});
beforeEach(() => {
testScheduler = new TestScheduler(assertDeepEquals);
});
beforeEach(() => {
injector = TestBed.inject<Injector>(Injector);
});
it('should re-emit updated value from source after all resolvers emit and complete', () => {
testScheduler.run(({hot, cold, expectObservable}) => {
const transition: any = createTransition({e1: 'resolveTwo'}, {e2: 'resolveFour'});
const source = cold('-(t|)', {t: deepClone(transition)});
const expected = '-(t|)';
const outputTransition = deepClone(transition);
outputTransition.guards.canActivateChecks[0].route._resolvedData = {e1: 2};
outputTransition.guards.canActivateChecks[1].route._resolvedData = {e2: 4};
expectObservable(source.pipe(resolveData('emptyOnly', injector))).toBe(expected, {
t: outputTransition
});
});
});
it('should re-emit value from source when there are no resolvers', () => {
testScheduler.run(({hot, cold, expectObservable}) => {
const transition: any = createTransition({});
const source = cold('-(t|)', {t: deepClone(transition)});
const expected = '-(t|)';
const outputTransition = deepClone(transition);
outputTransition.guards.canActivateChecks[0].route._resolvedData = {};
expectObservable(source.pipe(resolveData('emptyOnly', injector))).toBe(expected, {
t: outputTransition
});
});
});
it('should not emit when there\'s one resolver that doesn\'t emit', () => {
testScheduler.run(({hot, cold, expectObservable}) => {
const transition: any = createTransition({e2: 'resolveEmpty'});
const source = cold('-(t|)', {t: deepClone(transition)});
const expected = '-|';
expectObservable(source.pipe(resolveData('emptyOnly', injector))).toBe(expected);
});
});
it('should not emit if at least one resolver doesn\'t emit', () => {
testScheduler.run(({hot, cold, expectObservable}) => {
const transition: any = createTransition({e1: 'resolveTwo'}, {e2: 'resolveEmpty'});
const source = cold('-(t|)', {t: deepClone(transition)});
const expected = '-|';
expectObservable(source.pipe(resolveData('emptyOnly', injector))).toBe(expected);
});
});
});
function assertDeepEquals(a: any, b: any) {
return expect(a).toEqual(b);
}
function createTransition(...resolvers: {[key: string]: string}[]) {
return {
targetSnapshot: {},
guards: {
canActivateChecks:
resolvers.map(resolver => ({
route: {_resolve: resolver, pathFromRoot: [{url: '/'}], data: {}},
})),
},
};
}
function deepClone(obj: any) {
return JSON.parse(JSON.stringify(obj));
}