Ngrx Effects spec throws Error as “No test scheduler initialized”
来源： https://stackoverflow.com/questions/55222252/ngrx-effects-spec-throws-error-as-no-test-scheduler-initialized
jasmine-marbles
Ngrx Effects spec throws Error as “No test scheduler initialized”
来源： https://stackoverflow.com/questions/55222252/ngrx-effects-spec-throws-error-as-no-test-scheduler-initialized
How to test timeout() in a rxjs pipe with jasmine-marbles
问题 I have written a pipe that filters an input observable. In the pipe I specify a timeout with the timeout() operator to abort waiting if the expected value is not emitted by the source in time. I want to test the timeout case with jasmine-marbles, but I can't get it to work. I believe that expect(source).toBeObservable() evaluates before the source emits. see Stackblitz The pipe to be tested: source = cold('a', { a: { id: 'a' } }).pipe( timeout(500), filter((a) => false), catchError((err) => {
How to test timeout() in a rxjs pipe with jasmine-marbles
问题 I have written a pipe that filters an input observable. In the pipe I specify a timeout with the timeout() operator to abort waiting if the expected value is not emitted by the source in time. I want to test the timeout case with jasmine-marbles, but I can't get it to work. I believe that expect(source).toBeObservable() evaluates before the source emits. see Stackblitz The pipe to be tested: source = cold('a', { a: { id: 'a' } }).pipe( timeout(500), filter((a) => false), catchError((err) => {
How to test timeout() in a rxjs pipe with jasmine-marbles
问题 I have written a pipe that filters an input observable. In the pipe I specify a timeout with the timeout() operator to abort waiting if the expected value is not emitted by the source in time. I want to test the timeout case with jasmine-marbles, but I can't get it to work. I believe that expect(source).toBeObservable() evaluates before the source emits. see Stackblitz The pipe to be tested: source = cold('a', { a: { id: 'a' } }).pipe( timeout(500), filter((a) => false), catchError((err) => {
How to make an rxjs marble sync grouping only take up one frame
问题 According to https://github.com/ReactiveX/rxjs/blob/master/doc/writing-marble-tests.md '--(abc)-|': on frame 20, emit a, b, and c, then on frame 80 complete So how do I represent "on frame 20, emit a, b, and c, then on frame 40 complete. Ie how can I stop the sync group itself taking up frames? 回答1: cartant has answered this question in his comment. There's no way to do it - sync groups will always take up extra frames even though all members occur in the frame of the opening bracket. 来源：
How to test observables which emit grouped events with rxjs marbles?
问题 According to rxjs marbles documentation the current behaviour for the sync groupings is the following: '(ab)-(cd)': on frame 0, emits a and b then on frame 50, emits c and d From the docs: While it can be unintuitive at first, after all the values have synchronously emitted time will progress a number of frames equal to the number of ASCII characters in the group, including the parentheses Ok, but how do I test an observable like this (using marbles or any other technique): const observable$
How to test Subject with jasmine marbles
问题 Angular 6, Rxjs, Jest, Jasmine-marbles. very common scenario: a component that searches for server-side items. In the component, there are some controls that can change search critera, and I'd like to code in "reactive-style". So in the component code I have something like this: class SearchComponent implements OnInit { public searchData: SearchData = {}; public searchConditions$ = new Subject<SearchData>(); constructor(private searchService: SearchService) { } public results$: Observable
How to test Subject with jasmine marbles
Angular 6, Rxjs, Jest, Jasmine-marbles. very common scenario: a component that searches for server-side items. In the component, there are some controls that can change search critera, and I'd like to code in "reactive-style". So in the component code I have something like this: class SearchComponent implements OnInit { public searchData: SearchData = {}; public searchConditions$ = new Subject<SearchData>(); constructor(private searchService: SearchService) { } public results$: Observable<ResultData> = this.searchConditions$.pipe( distinctUntilChanged(this.compareProperties), // omissis but it
How to make an rxjs marble sync grouping only take up one frame
According to https://github.com/ReactiveX/rxjs/blob/master/doc/writing-marble-tests.md '--(abc)-|': on frame 20, emit a, b, and c, then on frame 80 complete So how do I represent "on frame 20, emit a, b, and c, then on frame 40 complete. Ie how can I stop the sync group itself taking up frames? cartant has answered this question in his comment. There's no way to do it - sync groups will always take up extra frames even though all members occur in the frame of the opening bracket. 来源： https://stackoverflow.com/questions/46839094/how-to-make-an-rxjs-marble-sync-grouping-only-take-up-one-frame