Moved examples into example directory

Moved routes to separate file
Used route constants

src/features/examples/counter/state/counterSlice.spec.ts

@@ -0,0 +1,30 @@
+import counterReducer, { increment, decrement, incrementByAmount } from "./counterSlice";
+import { CounterState } from "../models/CounterState";
+
+describe("counter reducer", () => {
+  const initialState: CounterState = {
+    value: 3,
+    status: "idle",
+  };
+  it("should handle initial state", () => {
+    expect(counterReducer(undefined, { type: "unknown" })).toEqual({
+      value: 0,
+      status: "idle",
+    });
+  });
+
+  it.only("should handle increment", () => {
+    const actual = counterReducer(initialState, increment());
+    expect(actual.value).toEqual(4);
+  });
+
+  it("should handle decrement", () => {
+    const actual = counterReducer(initialState, decrement());
+    expect(actual.value).toEqual(2);
+  });
+
+  it("should handle incrementByAmount", () => {
+    const actual = counterReducer(initialState, incrementByAmount(2));
+    expect(actual.value).toEqual(5);
+  });
+});