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| 1 | +import ReactN = require('../../src/index'); |
| 2 | +import createProvider, { ReactNProvider } from '../../src/create-provider'; |
| 3 | +import defaultGlobalStateManager from '../../src/default-global-state-manager'; |
| 4 | +import { |
| 5 | + Dispatcher, |
| 6 | + Dispatchers, |
| 7 | + ExtractArguments, |
| 8 | +} from '../../src/typings/reducer'; |
| 9 | +import HookTest from '../utils/hook-test'; |
| 10 | +import { G, INITIAL_REDUCERS, INITIAL_STATE, R } from '../utils/initial'; |
| 11 | +import { hasContext } from '../utils/react-version'; |
| 12 | +import spyOn from '../utils/spy-on-global-state-manager'; |
| 13 | + |
| 14 | + |
| 15 | + |
| 16 | +type A = ExtractArguments<R[typeof REDUCER]>; |
| 17 | + |
| 18 | +type P = [ ]; |
| 19 | + |
| 20 | +type V = Dispatchers<G, R>; |
| 21 | + |
| 22 | + |
| 23 | + |
| 24 | +const ARGS: A = [ 'te', 'st' ]; |
| 25 | + |
| 26 | +const EMPTY_STATE: {} = Object.create(null); |
| 27 | + |
| 28 | +const Provider: ReactNProvider<G, R> = createProvider<G, R>( |
| 29 | + INITIAL_STATE, |
| 30 | + INITIAL_REDUCERS, |
| 31 | +); |
| 32 | + |
| 33 | +const REDUCER: keyof R = 'append'; |
| 34 | + |
| 35 | +const REDUCER_NAMES: string[] = Object.keys(INITIAL_REDUCERS); |
| 36 | + |
| 37 | +const STATE_CHANGE: Partial<G> = INITIAL_REDUCERS[REDUCER]( |
| 38 | + INITIAL_STATE, |
| 39 | + Provider.dispatch, |
| 40 | + ...ARGS, |
| 41 | +); |
| 42 | + |
| 43 | +const NEW_STATE: G = { |
| 44 | + ...INITIAL_STATE, |
| 45 | + ...STATE_CHANGE, |
| 46 | +}; |
| 47 | + |
| 48 | +REDUCER_NAMES.sort(); |
| 49 | + |
| 50 | + |
| 51 | + |
| 52 | +describe('Context useDispatch()', (): void => { |
| 53 | + |
| 54 | + // If Context is not supported, |
| 55 | + if (!hasContext) { |
| 56 | + return; |
| 57 | + } |
| 58 | + |
| 59 | + let dispatchers: Dispatchers<G, R>; |
| 60 | + let testUseDispatch: HookTest<P, V>; |
| 61 | + const spy = spyOn('set'); |
| 62 | + |
| 63 | + beforeEach((): void => { |
| 64 | + testUseDispatch = |
| 65 | + new HookTest<P, V>( |
| 66 | + (): V => ReactN.useDispatch<G, R>() |
| 67 | + ) |
| 68 | + .addParent(Provider); |
| 69 | + testUseDispatch.render(); |
| 70 | + dispatchers = testUseDispatch.value; |
| 71 | + }); |
| 72 | + |
| 73 | + afterEach((): void => { |
| 74 | + Provider.reset(); |
| 75 | + }); |
| 76 | + |
| 77 | + |
| 78 | + it('should return an object', (): void => { |
| 79 | + expect(typeof dispatchers).toBe('object'); |
| 80 | + }); |
| 81 | + |
| 82 | + it('should return the global dispatch object', async (): Promise<void> => { |
| 83 | + const DISPATCHER_NAMES: string[] = Object.keys(dispatchers); |
| 84 | + DISPATCHER_NAMES.sort(); |
| 85 | + expect(DISPATCHER_NAMES).toEqual(REDUCER_NAMES); |
| 86 | + }); |
| 87 | + |
| 88 | + describe('the returned dispatch object values', (): void => { |
| 89 | + |
| 90 | + let dispatch: Dispatcher<G, A>; |
| 91 | + beforeEach((): void => { |
| 92 | + dispatch = dispatchers[REDUCER]; |
| 93 | + }); |
| 94 | + |
| 95 | + it('should call GlobalStateManager.set', async (): Promise<void> => { |
| 96 | + await dispatch(...ARGS); |
| 97 | + expect(spy.set).toHaveBeenCalledTimes(1); |
| 98 | + expect(spy.set).toHaveBeenCalledWith(STATE_CHANGE); |
| 99 | + }); |
| 100 | + |
| 101 | + it('should update the Context global state', async (): Promise<void> => { |
| 102 | + await dispatch(...ARGS); |
| 103 | + expect(Provider.global).toEqual(NEW_STATE); |
| 104 | + }); |
| 105 | + |
| 106 | + it('should not update the default global state', async (): Promise<void> => { |
| 107 | + await dispatch(...ARGS); |
| 108 | + expect(defaultGlobalStateManager.state).toStrictEqual(EMPTY_STATE); |
| 109 | + }); |
| 110 | + }); |
| 111 | + |
| 112 | +}); |
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