Add jest coverage + Test setFruits mutation

tests/unit/global.spec.js

@@ -1,5 +1,6 @@
-import { mount } from "@vue/test-utils";
 import mockAxios from "axios";
+import { mount } from "@vue/test-utils";
+
 import App from "../../src/App.vue";
 import Fruits from "../../src/views/Fruits.vue";
 
@@ -15,6 +16,7 @@ describe("App", () => {
   });
 });
 
+// TODO: Move the following code to fruits.spec.js
 jest.mock("axios", () => ({
   get: jest.fn(() => Promise.resolve({ data: { data: "value" } }))
 }));

tests/unit/mutations.spec.js

@@ -0,0 +1,36 @@
+import mutations from "@/store/mutations.js";
+
+describe("Test Vuex mutations.", () => {
+  it("should add fruits to the state", () => {
+    const fruits = [
+      {
+        id: 3,
+        isFruit: true,
+        name: "banana",
+        image: "/image/path.jpg",
+        price: "907.00",
+        color: "#763e44",
+        description: "Iusto illum vero voluptatem.",
+        taste: "Handcrafted",
+        expires: "2021-04-11T08:54:24.588Z"
+      }
+    ];
+    const state = {
+      fruits: []
+    };
+    mutations.setFruits(state, fruits);
+    expect(state.fruits).toEqual([
+      {
+        id: 3,
+        isFruit: true,
+        name: "banana",
+        image: "/image/path.jpg",
+        price: "907.00",
+        color: "#763e44",
+        description: "Iusto illum vero voluptatem.",
+        taste: "Handcrafted",
+        expires: "2021-04-11T08:54:24.588Z"
+      }
+    ]);
+  });
+});