fix($location): don't break on numeric path arguments

Fixes angular#7054

Author: pkozlowski-opensource

src/ng/location.js

@@ -395,6 +395,7 @@ LocationHashbangInHtml5Url.prototype =
    * @return {string} path
    */
   path: locationGetterSetter('$$path', function(path) {
+    path = isString(path) ?  path : '' + path;
     return path.charAt(0) == '/' ? path : '/' + path;
   }),
 

test/ng/locationSpec.js

@@ -86,6 +86,11 @@ describe('$location', function() {
       expect(url.absUrl()).toBe('http://www.domain.com:9877/new/path?search=a&b=c&d#hash');
     });
 
+    it('path() should not break on numeric values', function() {
+      url.path(1);
+      expect(url.path()).toBe('/1');
+      expect(url.absUrl()).toBe('http://www.domain.com:9877/1?search=a&b=c&d#hash');
+    });
 
     it('search() should accept string', function() {
       url.search('x=y&c');