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@dproject21

go1.10のtest2jsonを試してみた

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1行でまとめ

test2jsonは、テストレポートをjsonで出力してくれるやつだった。

go1.10でのtestingパッケージ新機能

go1.10のDraft Release Notesを読んでいたら「test2json」なるgo toolsが出るよと書かれていたので試してみた。

test2json試してみた。

リファレンスはこちら

@chimatter氏のgo get go1.10rc2 で気楽に 1.10 を試すを頼りに go1.10rc2をインストールしたあと、足し算と簡単なテストを書いてみる。

calc.go
package main

func Add(x int , y int) int {
    return x + y
}
calc_test.go
package main

import (
    "testing"
    "github.com/stretchr/testify/assert"
)

func TestAdd(t *testing.T) {
    testCases := []struct {
        x int
        y int
        ans int
    }{
        {1, 2, 3},
        {3, 4, 7},
    }
    for _, test := range testCases {
        assert.Equal(t, Add(test.x, test.y), test.ans, "test fail.")
    }
}

通常、goのテストを叩くときは

$ go test .

とコマンドを実行すればいいのだが、 test2json 経由で結果をjson出力したい場合はこのようになる。

$ go1.10rc2 test -json .
{"Time":"2018-02-13T21:29:12.168347168+09:00","Action":"run","Package":"_/Users/dproject21/rc_test","Test":"TestAdd"}
{"Time":"2018-02-13T21:29:12.168552203+09:00","Action":"output","Package":"_/Users/dproject21/rc_test","Test":"TestAdd","Output":"=== RUN   TestAdd\n"}
{"Time":"2018-02-13T21:29:12.168569401+09:00","Action":"output","Package":"_/Users/dproject21/rc_test","Test":"TestAdd","Output":"--- PASS: TestAdd (0.00s)\n"}
{"Time":"2018-02-13T21:29:12.168574805+09:00","Action":"pass","Package":"_/Users/dproject21/rc_test","Test":"TestAdd","Elapsed":0}
{"Time":"2018-02-13T21:29:12.168585837+09:00","Action":"output","Package":"_/Users/dproject21/rc_test","Output":"PASS\n"}
{"Time":"2018-02-13T21:29:12.168590911+09:00","Action":"output","Package":"_/Users/dproject21/rc_test","Output":"ok  \t_/Users/dproject21/rc_test\t(cached)\n"}
{"Time":"2018-02-13T21:29:12.168598287+09:00","Action":"pass","Package":"_/Users/dproject21/rc_test","Elapsed":0}

ちなみに、2018/2/13時点で

$ go test -json .

と叩くと、「そんなフラグねーよ」と怒られるのでお気をつけください。

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