init

src/app/app-reducer.test.ts

@@ -0,0 +1,22 @@
+import { appReducer, InitialStateType, setAppErrorAC, setAppStatusAC } from './app-reducer'
+
+let startState: InitialStateType;
+
+beforeEach(() => {
+	startState = {
+		error: null,
+		status: 'idle',
+		isInitialized: false
+	}
+})
+
+test('correct error message should be set', () => {
+	const endState = appReducer(startState, setAppErrorAC('some error'))
+	expect(endState.error).toBe('some error');
+})
+
+test('correct status should be set', () => {
+	const endState = appReducer(startState, setAppStatusAC('loading'))
+	expect(endState.status).toBe('loading');
+})
+