当我运行`go test`时，为什么这个函数未定义？(Why is this function undefined when I run `go test`?)

当我运行`go test`时，为什么这个函数未定义？(Why is this function undefined when I run `go test`?)

这是代码

前

package main import "fmt" func Haha() { fmt.Println("in Haha") } func main() { }

a_test.go

package main_test import "testing" func TestA(t *testing.T) { Haha() }

go build工程。 但是当我运行~/gopath/src/zjk/misc$ go test -v 。 这是我得到的

# zjk/misc_test ./a_test.go:6: undefined: Haha FAIL zjk/misc [build failed]

Here is the code

a.go

package main import "fmt" func Haha() { fmt.Println("in Haha") } func main() { }

a_test.go

package main_test import "testing" func TestA(t *testing.T) { Haha() }

go build works. But when I run ~/gopath/src/zjk/misc$ go test -v. Here is what I get

# zjk/misc_test ./a_test.go:6: undefined: Haha FAIL zjk/misc [build failed]

最满意答案

因为你有不同的包裹

应该：

前

package main import "fmt" func Haha() { fmt.Println("in Haha") } func main() { }

a_test.go

package main import "testing" func TestA(t *testing.T) { Haha() }

输出：

# zjk/misc_test in Haha PASS ok github.com/qwertmax/so 0.009s

because you have different packages

should be:

a.go

package main import "fmt" func Haha() { fmt.Println("in Haha") } func main() { }

a_test.go

package main import "testing" func TestA(t *testing.T) { Haha() }

output:

# zjk/misc_test in Haha PASS ok github.com/qwertmax/so 0.009s