test(util): add more getQuerystring() tests

ionic/util/test/util.spec.ts

@@ -235,6 +235,28 @@ export function run() {
     describe('getQuerystring', function() {
       it('should have no entries for empty url', () => {
         expect(util.getQuerystring('')).toEqual({});
+        expect(util.getQuerystring(null)).toEqual({});
+        expect(util.getQuerystring(undefined)).toEqual({});
+      });
+
+      it('should have no entries when without ?', () => {
+        expect(util.getQuerystring('http://localhost:1234/')).toEqual({});
+      });
+
+      it('should have no entries with only ?', () => {
+        expect(util.getQuerystring('http://localhost:1234/?')).toEqual({});
+      });
+
+      it('should have no entries for key with no =', () => {
+        expect(util.getQuerystring('http://localhost:1234/?key')).toEqual({});
+      });
+
+      it('should have no entries with only #?', () => {
+        expect(util.getQuerystring('http://localhost:1234/#?')).toEqual({});
+      });
+
+      it('should have no entries with only #?=', () => {
+        expect(util.getQuerystring('http://localhost:1234/#?=')).toEqual({});
       });
 
       it('should have no entries for url with no "?" character', () => {
@@ -242,12 +264,25 @@ export function run() {
       });
 
       it('should contain key/value entries for all the parameters after "?" character', () => {
-        expect(util.getQuerystring('http://localhost:1234/#key0=0&key0x=0x?key1=1&key2=2')).toEqual({
+        expect(util.getQuerystring('http://localhost:1234/#key1=1&key2x=2x?key3=3&key4=4')).toEqual({
+          key3: '3',
+          key4: '4'
+        });
+      });
+
+      it('should lowercase param keys', () => {
+        expect(util.getQuerystring('http://localhost:1234/#?KEY1=1&kEy2=2')).toEqual({
           key1: '1',
           key2: '2'
         });
       });
 
+      it('should not include any values when # comes after ?', () => {
+        expect(util.getQuerystring('http://localhost:1234/?key1=1#key2=2')).toEqual({
+          key1: '1'
+        });
+      });
+
       it('should ignore empty ?& and &&', () => {
         expect(util.getQuerystring('http://localhost:1234/#?&&')).toEqual({});
 
@@ -257,6 +292,12 @@ export function run() {
         });
       });
 
+      it('should get "" when key has no value', () => {
+        expect(util.getQuerystring('http://localhost:1234/#?key=')).toEqual({
+          key: ''
+        });
+      });
+
     });
 
     describe('isTrueProperty', function() {

ionic/util/util.ts

@@ -182,11 +182,14 @@ export function getQuerystring(url: string): any {
     const startIndex = url.indexOf('?');
     if (startIndex !== -1) {
       const queries = url.slice(startIndex + 1).split('&');
-      queries.filter((param) => { return param.indexOf('=') > 0; }).forEach((param) => {
+      for (var i = 0; i < queries.length; i++) {
-        var split = param.split('=');
+        if (queries[i].indexOf('=') > 0) {
-        if(split.length > 1)
+          var split = queries[i].split('=');
-          queryParams[split[0].toLowerCase()] = split[1].split('#')[0];
+          if (split.length > 1) {
-      });
+            queryParams[split[0].toLowerCase()] = split[1].split('#')[0];
+          }
+        }
+      }
     }
   }
   return queryParams;