issue #1948, added testing code to test go api

Author: Guo Huang

samples/client/petstore/go/petStore_test.go

@@ -0,0 +1,47 @@
+package main
+
+import (
+	"testing"
+
+	sw "./swagger"
+)
+
+func TestAddPet(t *testing.T) {
+	t.Log("Testing TestAddPet...")
+	s := sw.NewPetApi()
+	newPet := (sw.Pet{Id: 12830, Name: "gopher",
+		PhotoUrls: []string{"http://1.com", "http://2.com"}, Status: "pending"})
+
+	err := s.AddPet(newPet)
+
+	if err != nil {
+		t.Errorf("Error while adding pet")
+		t.Log(err)
+	}
+}
+
+func TestGetPetById(t *testing.T) {
+	t.Log("Testing TestGetPetById...")
+
+	s := sw.NewPetApi()
+	resp, err := s.GetPetById(12830)
+	if err != nil {
+		t.Errorf("Error while getting pet by id")
+		t.Log(err)
+	} else {
+		t.Log(resp)
+	}
+}
+
+func TestUpdatePetWithForm(t *testing.T) {
+	t.Log("Testing UpdatePetWithForm...")
+
+	s := sw.NewPetApi()
+
+	err := s.UpdatePetWithForm("12830", "golang", "available")
+
+	if err != nil {
+		t.Errorf("Error while updating pet by id")
+		t.Log(err)
+	} 
+}