util/http: add tests for url template strings (#1282)

test/unit/util/http.js

@@ -39,6 +39,31 @@ describe('util/http', () => {
     });
   });
 
+  describe('url()', () => {
+    const { url } = http;
+
+    const a = 'a space';
+    const b = 'funnyȩ¸iê';
+    const c = '100%';
+    const d = 999;
+    const e = { toString: () => 'e!' };
+
+    [
+      [ url``, '' ],
+      [ url`/`, '/' ],
+      [ url`/${a}`, '/a%20space' ],
+      [ url`/${b}`, '/funny%C8%A9%C2%B8i%C3%AA' ],
+      [ url`/${c}`, '/100%25' ],
+      [ url`/${d}`, '/999' ],
+      [ url`/${e}`, '/e!' ],
+      [ url`/${a}/${b}?c=${c}&d=${d}&e=${e}x`, '/a%20space/funny%C8%A9%C2%B8i%C3%AA?c=100%25&d=999&e=e!x' ],
+    ].forEach(([ actual, expected ]) => {
+      it(`should correctly encode ${expected}`, () => {
+        actual.should.equal(expected);
+      });
+    });
+  });
+
   describe('urlPathname', () => {
     const { urlPathname } = http;
     it('should return the pathname part of a url', () => {