Added more tests

Request.go

@@ -8,6 +8,7 @@ type Request interface {
 	Method() string
 	Path() string
 	Scheme() string
+	Param(string) string
 }
 
 // request represents the HTTP request used in the given context.
@@ -16,6 +17,7 @@ type request struct {
 	host   string
 	method string
 	path   string
+	query  string
 	params []router.Parameter
 }
 
@@ -29,6 +31,19 @@ func (req *request) Method() string {
 	return req.method
 }
 
+// Param retrieves a parameter.
+func (req *request) Param(name string) string {
+	for i := range len(req.params) {
+		p := req.params[i]
+
+		if p.Key == name {
+			return p.Value
+		}
+	}
+
+	return ""
+}
+
 // Path returns the requested path.
 func (req *request) Path() string {
 	return req.path