122 lines
4.2 KiB
TypeScript
122 lines
4.2 KiB
TypeScript
import { ReplaySubject, firstValueFrom, timeout } from "rxjs";
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import { DerivedState, GlobalState, SingleUserState, ActiveUserState } from "../src/platform/state";
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// eslint-disable-next-line import/no-restricted-paths -- using unexposed options for clean typing in test class
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import { StateUpdateOptions } from "../src/platform/state/state-update-options";
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// eslint-disable-next-line import/no-restricted-paths -- using unexposed options for clean typing in test class
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import { UserState, activeMarker } from "../src/platform/state/user-state";
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import { UserId } from "../src/types/guid";
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const DEFAULT_TEST_OPTIONS: StateUpdateOptions<any, any> = {
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shouldUpdate: () => true,
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combineLatestWith: null,
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msTimeout: 10,
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};
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function populateOptionsWithDefault(
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options: StateUpdateOptions<any, any>,
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): StateUpdateOptions<any, any> {
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return {
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...DEFAULT_TEST_OPTIONS,
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...options,
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};
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}
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export class FakeGlobalState<T> implements GlobalState<T> {
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// eslint-disable-next-line rxjs/no-exposed-subjects -- exposed for testing setup
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stateSubject = new ReplaySubject<T>(1);
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update: <TCombine>(
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configureState: (state: T, dependency: TCombine) => T,
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options?: StateUpdateOptions<T, TCombine>,
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) => Promise<T> = jest.fn(async (configureState, options) => {
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options = populateOptionsWithDefault(options);
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if (this.stateSubject["_buffer"].length == 0) {
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// throw a more helpful not initialized error
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throw new Error(
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"You must initialize the state with a value before calling update. Try calling `stateSubject.next(initialState)` before calling update",
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);
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}
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const current = await firstValueFrom(this.state$.pipe(timeout(100)));
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const combinedDependencies =
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options.combineLatestWith != null
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? await firstValueFrom(options.combineLatestWith.pipe(timeout(options.msTimeout)))
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: null;
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if (!options.shouldUpdate(current, combinedDependencies)) {
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return current;
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}
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const newState = configureState(current, combinedDependencies);
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this.stateSubject.next(newState);
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return newState;
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});
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updateMock = this.update as jest.MockedFunction<typeof this.update>;
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get state$() {
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return this.stateSubject.asObservable();
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}
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}
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export class FakeUserState<T> implements UserState<T> {
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// eslint-disable-next-line rxjs/no-exposed-subjects -- exposed for testing setup
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stateSubject = new ReplaySubject<T>(1);
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update: <TCombine>(
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configureState: (state: T, dependency: TCombine) => T,
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options?: StateUpdateOptions<T, TCombine>,
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) => Promise<T> = jest.fn(async (configureState, options) => {
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options = populateOptionsWithDefault(options);
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const current = await firstValueFrom(this.state$.pipe(timeout(options.msTimeout)));
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const combinedDependencies =
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options.combineLatestWith != null
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? await firstValueFrom(options.combineLatestWith.pipe(timeout(options.msTimeout)))
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: null;
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if (!options.shouldUpdate(current, combinedDependencies)) {
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return current;
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}
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const newState = configureState(current, combinedDependencies);
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this.stateSubject.next(newState);
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return newState;
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});
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updateMock = this.update as jest.MockedFunction<typeof this.update>;
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updateFor: <TCombine>(
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userId: UserId,
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configureState: (state: T, dependency: TCombine) => T,
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options?: StateUpdateOptions<T, TCombine>,
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) => Promise<T> = jest.fn();
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getFromState: () => Promise<T> = jest.fn(async () => {
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return await firstValueFrom(this.state$.pipe(timeout(10)));
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});
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get state$() {
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return this.stateSubject.asObservable();
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}
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}
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export class FakeSingleUserState<T> extends FakeUserState<T> implements SingleUserState<T> {
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constructor(readonly userId: UserId) {
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super();
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}
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}
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export class FakeActiveUserState<T> extends FakeUserState<T> implements ActiveUserState<T> {
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[activeMarker]: true;
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}
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export class FakeDerivedState<T> implements DerivedState<T> {
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// eslint-disable-next-line rxjs/no-exposed-subjects -- exposed for testing setup
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stateSubject = new ReplaySubject<T>(1);
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forceValue(value: T): Promise<T> {
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this.stateSubject.next(value);
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return Promise.resolve(value);
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}
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forceValueMock = this.forceValue as jest.MockedFunction<typeof this.forceValue>;
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get state$() {
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return this.stateSubject.asObservable();
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}
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}
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