Create Grid & GridEmpty test

test/GridEmpty.spec.js

@@ -0,0 +1,18 @@
+import { mount } from "@vue/test-utils";
+import GridEmpty from "@/components/GridEmpty";
+
+describe("GridEmpty", () => {
+  it("has default error message.", () => {
+    const wrapper = mount(GridEmpty);
+    expect(wrapper.find("p").text()).toBe("0 items to be shown.");
+  });
+
+  it("has custom error message.", () => {
+    const wrapper = mount(GridEmpty, {
+      propsData: {
+        message: "test message"
+      }
+    });
+    expect(wrapper.find("p").text()).toBe("test message");
+  });
+});