Small fixes to response marshaling, introduced tests for response formats

tests/matchers.go

@@ -0,0 +1,33 @@
+package tests
+
+import (
+	. "github.com/smartystreets/goconvey/convey"
+	"encoding/json"
+	"encoding/xml"
+	"fmt"
+)
+
+func ShouldMatchXML(actual interface{}, expected ...interface{}) string {
+	xml, err := xml.Marshal(actual)
+	if err != nil {
+		return fmt.Sprintf("Malformed XML: %v", err)
+	}
+	return ShouldEqual(string(xml), expected[0].(string))
+
+}
+
+func ShouldMatchJSON(actual interface{}, expected ...interface{}) string {
+	json, err := json.Marshal(actual)
+	if err != nil {
+		return fmt.Sprintf("Malformed JSON: %v", err)
+	}
+	s := UnindentJSON(json)
+	return ShouldEqual(s, expected[0].(string))
+}
+
+func UnindentJSON(j []byte) string {
+	var m = make(map[string]interface{})
+	json.Unmarshal(j, &m)
+	s, _ := json.Marshal(m)
+	return string(s)
+}