added test

src/common-components/site-sub-header/site-sub-header.spec.js

@@ -0,0 +1,27 @@
+import siteSubHeader from '@/common-components/site-sub-header/site-sub-header';
+import { shallowMount } from "@vue/test-utils";
+
+describe("site sub header", () => {
+
+    const subHeaderText = "<p>let's fix your glass</p>";
+    const mockMixin = {
+        methods: {
+            getCmsContent: jest.fn().mockImplementation(()=> {
+            return subHeaderText;
+            })
+        }
+    }
+
+    it("should contain the cms content", () => {
+        const wrapper = shallowMount(siteSubHeader, {
+            mixins: [mockMixin]
+        });
+      
+        wrapper.getCmsContent = jest.fn();
+        const actual = wrapper.find("p");
+
+        expect(actual.html()).toBe(subHeaderText);
+    })
+
+});
+