update unit tests

src/url.js

@@ -73,8 +73,6 @@ export function getWinOrigin(win) {
 export function parseUrl(url, opt_nocache) {
   if (!a) {
     a = /** @type {!HTMLAnchorElement} */ (self.document.createElement('a'));
-
-    // Currently url LRUcache capacity is limited to 100
     cache = self.UrlCache || (self.UrlCache = new LRUCache(100));
   }
 

test/functional/test-url.js

@@ -82,9 +82,6 @@ describe('getWinOrigin', () => {
       },
     })).to.equal('null');
   });
-
-
-
 });
 
 
@@ -120,6 +117,16 @@ describe('parseUrl', () => {
     const a2 = parseUrl(url);
     expect(a1).to.equal(a2);
   });
+  it('caches up to 100 results', () => {
+    const url = 'https://foo.com:123/abc?123#foo';
+    const a1 = parseUrl(url);
+    // cache 99 more urls in order to reach max capacity of LRU cache: 100
+    for (let i = 0; i < 100; i++) {
+      parseUrl(`${url}-${i}`);
+    }
+    const a2 = parseUrl(url);
+    expect(a1).to.not.equal(a2);
+  });
   it('should handle ports', () => {
     compareParse('https://foo.com:123/abc?123#foo', {
       href: 'https://foo.com:123/abc?123#foo',

test/functional/utils/test-lru-cache.js

@@ -26,6 +26,10 @@ describe('LRUCache', () => {
     }
   });
 
+  it('should create a protype-less object for caching', () => {
+    expect(cache.cache_.constructor).to.be.undefined;
+  });
+
   it('should never be over cap', () => {
     for (let i = 5; i < 10; i++) {
       cache.put(i, i);