fix(ParamTypes): {int} should accept negatives

Author: nateabele

src/params/paramTypes.ts

@@ -30,7 +30,7 @@ class ParamTypes {
       encode: valToString,
       decode(val) { return parseInt(val, 10); },
       is(val) { return isDefined(val) && this.decode(val.toString()) === val; },
-      pattern: /\d+/
+      pattern: /-?\d+/
     },
     bool: {
       encode: val => val && 1 || 0,

test/urlMatcherFactorySpec.js

@@ -544,6 +544,9 @@ describe("urlMatcherFactory", function () {
       var m = new UrlMatcher("/{foo:int}/{flag:bool}");
       expect(m.exec("/1138/1")).toEqual({ foo: 1138, flag: true });
       expect(m.format({ foo: 5, flag: true })).toBe("/5/1");
+
+      expect(m.exec("/-1138/1")).toEqual({ foo: -1138, flag: true });
+      expect(m.format({ foo: -5, flag: true })).toBe("/-5/1");
     });
 
     it("should match built-in types with spaces", function () {