Go-Testing

要点

Go的自动化测试框架比JUnit、PyUnit等更加轻量级。要点如下： 
- 测试代码以xxx_test.go方式命名 
- 测试代码中import “testing” 
- 测试函数形如 func Testxyz(t *Testing.T) {…} 
- 执行测试：go test

示例

比较要创建一个mymath package。

mymath.go

package mymathfunc Add(x, y int) int {return x + y
}func Minus(x, y int) int {return x - y
}

mymath_test.go

package mymath_testimport "mymath"
import "testing"func TestAdd(t *testing.T) {ret := mymath.Add(2, 3)if ret != 5 {t.Error("Expected 5, got ", ret)}
}func TestMinus(t *testing.T) {ret := mymath.Minus(2, 3)if ret != -1 {t.Error("Expected -1, got ", ret)}
}

目录文件结构

D:\examples>tree /F .
文件夹 PATH 列表
卷序列号为 5645-602F
D:\EXAMPLES
│  helloworld.exe
│  helloworld.go
│  math.txt
│  the_shape.go
│
└─the_go_path├─pkg│  └─windows_amd64│          mymath.a│          shape.a│          shape2.a│└─src├─mymath│      mymath.go│      mymath_test.go│├─shape│      the_shape.go│└─shape2the_shape.goD:\examples>

go test

这里略过go install。

mymath.go有错误的情况

D:\examples\the_go_path\src\mymath>go test
--- FAIL: TestMinus (0.00s)mymath_test.go:16: Expected -1, got  5
FAIL
exit status 1
FAIL    mymath  0.425sD:\examples\the_go_path\src\mymath>

测试用例全部通过的情况

D:\examples\the_go_path\src\mymath>go test
PASS
ok      mymath  0.369sD:\examples\the_go_path\src\mymath>