fix(router): throw when reserved characters used in route definition

Closes #3021

modules/angular2/src/router/path_recognizer.ts

@@ -178,6 +178,18 @@ function splitBySlash(url: string): List<string> {
   return url.split('/');
 }
 
+var RESERVED_CHARS = RegExpWrapper.create('//|\\(|\\)|;|\\?|=');
+function assertPath(path: string) {
+  if (StringWrapper.contains(path, '#')) {
+    throw new BaseException(
+        `Path "${path}" should not include "#". Use "HashLocationStrategy" instead.`);
+  }
+  var illegalCharacter = RegExpWrapper.firstMatch(RESERVED_CHARS, path);
+  if (isPresent(illegalCharacter)) {
+    throw new BaseException(
+        `Path "${path}" contains "${illegalCharacter[0]}" which is not allowed in a route config.`);
+  }
+}
 
 // represents something like '/foo/:bar'
 export class PathRecognizer {
@@ -187,6 +199,7 @@ export class PathRecognizer {
   terminal: boolean = true;
 
   constructor(public path: string, public handler: RouteHandler) {
+    assertPath(path);
     var parsed = parsePathString(path);
     var specificity = parsed['specificity'];
     var segments = parsed['segments'];

modules/angular2/test/router/path_recognizer_spec.ts

@@ -21,6 +21,24 @@ var mockRouteHandler = new SyncRouteHandler(DummyClass);
 
 export function main() {
   describe('PathRecognizer', () => {
+
+    it('should throw when given an invalid path', () => {
+      expect(() => new PathRecognizer('/hi#', mockRouteHandler))
+          .toThrowError(`Path "/hi#" should not include "#". Use "HashLocationStrategy" instead.`);
+      expect(() => new PathRecognizer('hi?', mockRouteHandler))
+          .toThrowError(`Path "hi?" contains "?" which is not allowed in a route config.`);
+      expect(() => new PathRecognizer('hi;', mockRouteHandler))
+          .toThrowError(`Path "hi;" contains ";" which is not allowed in a route config.`);
+      expect(() => new PathRecognizer('hi=', mockRouteHandler))
+          .toThrowError(`Path "hi=" contains "=" which is not allowed in a route config.`);
+      expect(() => new PathRecognizer('hi(', mockRouteHandler))
+          .toThrowError(`Path "hi(" contains "(" which is not allowed in a route config.`);
+      expect(() => new PathRecognizer('hi)', mockRouteHandler))
+          .toThrowError(`Path "hi)" contains ")" which is not allowed in a route config.`);
+      expect(() => new PathRecognizer('hi//there', mockRouteHandler))
+          .toThrowError(`Path "hi//there" contains "//" which is not allowed in a route config.`);
+    });
+
     describe('matrix params', () => {
       it('should recognize a trailing matrix value on a path value and assign it to the params return value',
          () => {