fix(router): fix query param parsing

packages/router/src/url_tree.ts

@@ -360,7 +360,7 @@ function matchSegments(str: string): string {
 const QUERY_PARAM_RE = /^[^=?&#]+/;
 // Return the name of the query param at the start of the string or an empty string
 function matchQueryParams(str: string): string {
-  const match = str.match(SEGMENT_RE);
+  const match = str.match(QUERY_PARAM_RE);
   return match ? match[0] : '';
 }
 

packages/router/test/url_tree.spec.ts

@@ -11,6 +11,20 @@ import {DefaultUrlSerializer, containsTree} from '../src/url_tree';
 describe('UrlTree', () => {
   const serializer = new DefaultUrlSerializer();
 
+  describe('DefaultUrlSerializer', () => {
+    let serializer: DefaultUrlSerializer;
+
+    beforeEach(() => { serializer = new DefaultUrlSerializer(); });
+
+    it('should parse query parameters', () => {
+      const tree = serializer.parse('/path/to?k=v&k/(a;b)=c');
+      expect(tree.queryParams).toEqual({
+        'k': 'v',
+        'k/(a;b)': 'c',
+      });
+    });
+  });
+
   describe('containsTree', () => {
     describe('exact = true', () => {
       it('should return true when two tree are the same', () => {