Feature/tc unit test (#104)

* add unit test for TC

.github/workflows/main.yml

@@ -41,7 +41,7 @@ jobs:
 
       - name: GolangCI Lint
         run: |
-          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.39.0
+          curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.44.2
           golangci-lint run ./...
 
       - name: Unit Tests

.golangci.yml

@@ -16,3 +16,12 @@ linters:
     - goimports
     - gocritic
     - revive
+
+linters-settings:
+  revive:
+    rules:
+      - name: exported
+        severity: warning
+        disabled: false
+        arguments:
+          - "disableStutteringCheck"

README.md

@@ -4,13 +4,13 @@
 ## Introduction | [中文](https://github.com/opentrx/seata-golang/blob/v2/docs/README_ZH.md)
 seata-golang is a distributed transaction middleware based on Golang.
 ### difference between seata-glang and [seata](https://github.com/seata/seata)
-| feature  |  seata   | seata-golang  | remark |
-  | ---- |  :----:  | :----:  | --- |
-| AT mode |  √  | √ | |
-| TCC mode | √  | √ | |
-| SAGA mode | √ | × | |
-| rpc | √ | √ | [dev branch](https://github.com/opentrx/seata-golang/tree/dev) |
-| grpc | × | √ | [v2 branch](https://github.com/opentrx/seata-golang/tree/v2) |
+| feature   | seata | seata-golang | remark                                                         |
+|-----------|:-----:|:------------:|----------------------------------------------------------------|
+| AT mode   |   ✅   |      ✅       |                                                                |
+| TCC mode  |   ✅   |      ✅       |                                                                |
+| SAGA mode |   ✅   |      ☑️      |                                                                |
+| rpc       |   ✅   |      ✅       | [dev branch](https://github.com/opentrx/seata-golang/tree/dev) |
+| grpc      |  ☑️   |      ✅       | [v2 branch](https://github.com/opentrx/seata-golang/tree/v2)   |
 
 ## Architecture
 <img alt="seata-flow" width="500px" src="https://github.com/opentrx/seata-golang/blob/v2/docs/images/seata-flow.png" />  

docs/README_ZH.md

@@ -4,13 +4,13 @@
 ## 简介 | [English](https://github.com/opentrx/seata-golang/blob/v2/README.md)
 seata-golang是一个用于解决分布式事务的中间件，是基于Go语言版本的seata。
 ### seata-golang与[seata](https://github.com/seata/seata) 的区别
-| 特性  |  seata   | seata-golang  | 备注 |
-  | ---- |  :----:  | :----:  | --- |
-| AT mode |  √  | √ | |
-| TCC mode | √  | √ | |
-| SAGA mode | √ | × | |
-| rpc | √ | √ | [dev branch](https://github.com/opentrx/seata-golang/tree/dev) |
-| grpc | × | √ | [v2 branch](https://github.com/opentrx/seata-golang/tree/v2) |
+| 特性        | seata | seata-golang | 备注                                                             |
+|-----------|:-----:|:------------:|----------------------------------------------------------------|
+| AT mode   |   ✅   |      ✅       |                                                                |
+| TCC mode  |   ✅   |      ✅       |                                                                |
+| SAGA mode |   ✅   |      ☑️      |                                                                |
+| rpc       |   ✅   |      ✅       | [dev branch](https://github.com/opentrx/seata-golang/tree/dev) |
+| grpc      |  ☑️   |      ✅       | [v2 branch](https://github.com/opentrx/seata-golang/tree/v2)   |
 
 ## 架构
 <img alt="seata-flow" width="500px" src="https://github.com/opentrx/seata-golang/blob/v2/docs/images/seata-flow.png" />  

go.mod

@@ -7,6 +7,7 @@ require (
 	github.com/go-sql-driver/mysql v1.5.0
 	github.com/go-xorm/xorm v0.7.9
 	github.com/gogo/protobuf v1.3.2
+	github.com/golang/mock v1.3.1
 	github.com/lib/pq v1.0.0
 	github.com/natefinch/lumberjack v2.0.0+incompatible
 	github.com/pkg/errors v0.9.1

go.sum

@@ -148,6 +148,7 @@ github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4er
 github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
 github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
 github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
+github.com/golang/mock v1.3.1 h1:qGJ6qTW+x6xX/my+8YUVl4WNpX9B7+/l2tRsHGZ7f2s=
 github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
 github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=