Add URL formatting tests

src/server/utils/__tests__/url.spec.ts

@@ -0,0 +1,14 @@
+import * as url from '../url';
+
+describe('formatURL', () => {
+  it('should not prepend HTTP protocol', () => {
+    const rawURL = 'http://website.com';
+    const formatted = url.formatURL(rawURL);
+    expect(formatted).toEqual(rawURL);
+  });
+
+  it('should prepend HTTP protocol', () => {
+    const formatted = url.formatURL('website.com');
+    expect(formatted).toEqual('http://website.com');
+  });
+});