diff --git a/common_test.go b/common_test.go
new file mode 100644
index 0000000..89a68e3
--- /dev/null
+++ b/common_test.go
@@ -0,0 +1,29 @@
+package main
+
+import (
+	"fmt"
+	"testing"
+)
+
+func SetupConfig() {
+	APIConfig = WechatAPIConfig{
+		"skdq8vklaurfqemfszuif",
+		"cmtWK2teRnLOXyO5dw7lJkETv9jCeNAqYyguEu5D8gG",
+		"wx876e233fde456b7b",
+		"4a91aa328569b10a9fb97adeb8b0af58"}
+}
+
+func AssertEqual(t *testing.T, a interface{}, b interface{}, message string) {
+	if a == b {
+		return
+	}
+	if len(message) == 0 {
+		message = fmt.Sprintf("%v != %v", a, b)
+	}
+	message = fmt.Sprintf("%v != %v", a, b)
+	t.Fatal(message)
+}
+
+func TestDummy(t *testing.T) {
+	t.Log("Testing common field")
+}
diff --git a/encrypt_test.go b/encrypt_test.go
index 0a698c4..b111ed3 100644
--- a/encrypt_test.go
+++ b/encrypt_test.go
@@ -4,14 +4,6 @@ import (
 	"testing"
 )
 
-func SetupConfig() {
-	APIConfig = WechatAPIConfig{
-		"skdq8vklaurfqemfszuif",
-		"cmtWK2teRnLOXyO5dw7lJkETv9jCeNAqYyguEu5D8gG",
-		"wx876e233fde456b7b",
-		"4a91aa328569b10a9fb97adeb8b0af58"}
-}
-
 func TestEncodingMesage(t *testing.T) {
 	SetupConfig()
 
diff --git a/inMsg_test.go b/inMsg_test.go
index 3a7c7c2..57145a8 100644
--- a/inMsg_test.go
+++ b/inMsg_test.go
@@ -1,7 +1,6 @@
 package main
 
 import (
-	"fmt"
 	"testing"
 )
 
@@ -16,24 +15,13 @@ func TestReadCommonHeader(t *testing.T) {
 </xml>`
 
 	h := ReadCommonHeader(msg)
-	assertEqual(t, h.ToUserName, "gh_f09231355c68", "ToUserName failed")
-	assertEqual(t, h.FromUserName, "oUN420bxqFqlx0ZQHciUOesZO3PE", "FromUserName failed")
-	assertEqual(t, h.CreateTime, int64(1492972518), "CreateTime Failed")
-	assertEqual(t, h.MsgType, "event", "MsgType failed")
+	AssertEqual(t, h.ToUserName, "gh_f09231355c68", "ToUserName failed")
+	AssertEqual(t, h.FromUserName, "oUN420bxqFqlx0ZQHciUOesZO3PE", "FromUserName failed")
+	AssertEqual(t, h.CreateTime, int64(1492972518), "CreateTime Failed")
+	AssertEqual(t, h.MsgType, "event", "MsgType failed")
 
 }
 
-func assertEqual(t *testing.T, a interface{}, b interface{}, message string) {
-	if a == b {
-		return
-	}
-	if len(message) == 0 {
-		message = fmt.Sprintf("%v != %v", a, b)
-	}
-	message = fmt.Sprintf("%v != %v", a, b)
-	t.Fatal(message)
-}
-
 func TestTxtMsg(t *testing.T) {
 	msg := `<xml>
  <ToUserName><![CDATA[toUser]]></ToUserName>
@@ -45,9 +33,9 @@ func TestTxtMsg(t *testing.T) {
  </xml>`
 	h := ReadCommonHeader(msg)
 	m := ReadTextMsg(msg)
-	assertEqual(t, m.Content, "this is a test", "Content is not right")
-	assertEqual(t, h.MsgType, "text", "")
-	assertEqual(t, m.MsgId, int64(1234567890123456), "")
+	AssertEqual(t, m.Content, "this is a test", "Content is not right")
+	AssertEqual(t, h.MsgType, "text", "")
+	AssertEqual(t, m.MsgId, int64(1234567890123456), "")
 }
 
 /*