init

enlightApp/test/reducers/counter.spec.ts

@@ -0,0 +1,31 @@
+import { AnyAction } from 'redux';
+import counterReducer, {
+  increment,
+  decrement,
+} from '../../app/features/counter/counterSlice';
+
+describe('reducers', () => {
+  describe('counter', () => {
+    it('should handle initial state', () => {
+      expect(counterReducer(undefined, {} as AnyAction)).toMatchSnapshot();
+    });
+
+    it('should handle INCREMENT_COUNTER', () => {
+      expect(
+        counterReducer({ value: 1 }, { type: increment })
+      ).toMatchSnapshot();
+    });
+
+    it('should handle DECREMENT_COUNTER', () => {
+      expect(
+        counterReducer({ value: 1 }, { type: decrement })
+      ).toMatchSnapshot();
+    });
+
+    it('should handle unknown action type', () => {
+      expect(
+        counterReducer({ value: 1 }, { type: 'unknown' })
+      ).toMatchSnapshot();
+    });
+  });
+});