diff --git a/accessToken_test.go b/accessToken_test.go
new file mode 100644
index 0000000..7469f43
--- /dev/null
+++ b/accessToken_test.go
@@ -0,0 +1,49 @@
+package main
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestAccessToken(t *testing.T) {
+	readConfig()
+	token, err := GetAccessToken()
+	if err != nil {
+		t.Error("Cannot get AccessToken From Tencent Wechat Server")
+	}
+
+	AssertEqual(t, token, WechatAccessToken.AccessToken, "Global accesstoken is not uptodate")
+}
+
+func TestTokenStorage(t *testing.T) {
+	var s AuthToken
+	s.AccessToken = "s0wf65p-KMzvYtH8qPu2qSX_EXLE2NaBgFHl7MZwedc7Kv_hdO0FG1QeUmBYJAGmQqJinPwFr67MRZwJee4rDnGVwhbuIfKs29N4ZJSXFP8fbAheuas08UuRe13UsdCtWSMcAFAGCW"
+	s.ExpireIn = 7200
+	msg, _ := json.Marshal(s)
+	file, _ := ioutil.TempFile(os.TempDir(), "wechat_token_")
+	defer os.Remove(file.Name())
+	writeTokenToFile([]byte(msg), file.Name())
+	token, _ := readTokenFromFile(file.Name())
+	AssertEqual(t, s, token, "read token should be correct")
+}
+
+func TestReadConfig(t *testing.T) {
+	readConfig()
+	if APIConfig.AppSecret == "" {
+		t.Error("AppSecret not available")
+	}
+	if APIConfig.Appid == "" {
+		t.Error("AppId not available")
+	}
+	if APIConfig.AuthTokenSaveTo == "" {
+		t.Error("where to save accesstoken is unknown")
+	}
+	if APIConfig.EncodingAESKey == "" {
+		t.Error("unknown AesEncryptionKey")
+	}
+	if APIConfig.Token == "" {
+		t.Error("hidden shared secret token is empty")
+	}
+}