Added test for item info

tests/unit/component-tests/renting-compnents-tests/item-info.spec.js

+import { shallowMount } from "@vue/test-utils";
+import ItemInfo  from "@/components/RentingComponents/ItemInfo.vue";
+
+const mockMethod = jest.spyOn(ItemInfo.methods, 'sendToConfirm')
+const mockCreatePush = jest.spyOn(ItemInfo.methods, 'createPushItem')
+     
+jest.mock("@/utils/apiutil", () => {
+    return {
+        getItem: () => {
+            return new Promise((resolve) => {
+            resolve({
+                listingID: 0,
+                title: "Title",
+                description: "Description",
+                pricePerDay: 100,
+                address: "ABC ROAD 3",
+                userID: 1,
+                categoryNames: [],
+                communityIDs: [],
+            });
+            });
+        },
+        getItemPictures: () => {
+            return new Promise((resolve) => {
+                resolve([]);
+            });
+        }
+    };
+  });
+
+describe("ItemInfo component", () => {
+    let wrapper;
+    const mockRouter = {
+        push: jest.fn(),
+        currentRoute: {
+            value: {
+                params: {
+                    id: "1",
+                }
+            }
+        }
+    };
+    const mockStore = {
+        commit: jest.fn(),
+    };
+
+    beforeEach(() => {
+        wrapper = shallowMount(ItemInfo, {
+            global: {
+                mocks: {
+                    $router: mockRouter,
+                    $store: mockStore,
+                },
+            },
+        });
+    });
+
+    it("is instantiated", () => {
+        expect(wrapper.exists()).toBeTruthy();
+    })
+
+    it("Check that title is displayed", () => {
+        expect(wrapper.findAll("h1")[0].text()).toBe("Title");
+    })
+
+    it("Check that button cannot be clicked if date is not selected", async () => {
+        
+        const jestCreatePushItemMock = jest.fn();
+        wrapper.vm.createPushItem = jestCreatePushItemMock;
+        // Click rent button
+        wrapper.find("button").trigger("click");
+        // wait a tick
+        await wrapper.vm.$nextTick();
+
+        // Check that jestMock was not clicked
+        expect(mockMethod).toHaveBeenCalledTimes(1);
+        expect(mockCreatePush).toHaveBeenCalledTimes(0);
+    })
+
+    it("Check that send to confirm works", async () => {
+        // Set valid days
+        wrapper.vm.setDate({
+            startDate: "2020-01-01",
+            endDate: "2020-02-01",
+        })
+        wrapper.find("button").trigger("click");
+        // wait a tick
+        await wrapper.vm.$nextTick();
+
+        // Check that method to change component was called
+        expect(mockCreatePush).toHaveBeenCalledTimes(1);
+    })
+
+
+});
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