Golang之单元测试

文件名必须以_test.go结尾
使用go test 执行单元测试

package main

func add(a, b int) int {
    return a + b
}
func sub(a, b int) int {
    return a - b
}

package main

import (
    "testing"
)

func TestAdd(t *testing.T) {
    r := add(2, 4)
    if r != 6 {
        t.Fatalf("add(2,4) error,expect:%d,actual:%d", 6, r)

    }
    t.Logf("test add succ")
}
func TestSub(t *testing.T) {
    r := sub(2, 4)
    if r != -2 {
        t.Fatalf("sub(2,4) error,expect:%d,actual:%d", 6, r)
    }
    t.Logf("test sub succ")
}

package main

E:\project\src\go_dev\day8\test>go test -v
=== RUN   TestAdd
--- PASS: TestAdd (0.00s)
        calc_test.go:13: test add succ
=== RUN   TestSub
--- PASS: TestSub (0.00s)
        calc_test.go:20: test sub succ
PASS
ok      go_dev/day8/test        0.142s