feat(UrlMatcher): default values & type decoding for query params

Author: nateabele

src/urlMatcherFactory.js

@@ -203,6 +203,7 @@ UrlMatcher.prototype.toString = function () {
 UrlMatcher.prototype.exec = function (path, searchParams) {
   var m = this.regexp.exec(path);
   if (!m) return null;
+  searchParams = searchParams || {};
 
   var params = this.parameters(), nTotal = params.length,
     nPath = this.segments.length - 1,
@@ -215,7 +216,11 @@ UrlMatcher.prototype.exec = function (path, searchParams) {
     cfg = this.params[param];
     values[param] = cfg.type.decode(isDefined(m[i + 1]) ? m[i + 1] : cfg.value);
   }
-  for (/**/; i < nTotal; i++) values[params[i]] = searchParams[params[i]];
+  for (/**/; i < nTotal; i++) {
+    param = params[i];
+    cfg = this.params[param];
+    values[param] = cfg.type.decode(isDefined(searchParams[param]) ? searchParams[param] : cfg.value);
+  }
 
   return values;
 };

test/urlMatcherFactorySpec.js

@@ -317,6 +317,14 @@ describe("urlMatcherFactory", function () {
         });
         expect(m.exec("/foo")).toEqual({ foo: "bar" });
       });
+
+      it("should populate default values for query params", function() {
+        var defaults = { order: "name", limit: 25, page: 1 };
+        var m = new UrlMatcher('/foo?order&limit&page', {
+          params: defaults
+        });
+        expect(m.exec("/foo")).toEqual(defaults);
+      });
     });
   });