moby/pkg/reexec/reexec_test.go
2020-02-11 00:06:42 +01:00

52 lines
1.1 KiB
Go

package reexec // import "github.com/docker/docker/pkg/reexec"
import (
"os"
"os/exec"
"testing"
"gotest.tools/v3/assert"
)
func init() {
Register("reexec", func() {
panic("Return Error")
})
Init()
}
func TestRegister(t *testing.T) {
defer func() {
if r := recover(); r != nil {
assert.Equal(t, `reexec func already registered under name "reexec"`, r)
}
}()
Register("reexec", func() {})
}
func TestCommand(t *testing.T) {
cmd := Command("reexec")
w, err := cmd.StdinPipe()
assert.NilError(t, err, "Error on pipe creation: %v", err)
defer w.Close()
err = cmd.Start()
assert.NilError(t, err, "Error on re-exec cmd: %v", err)
err = cmd.Wait()
assert.Error(t, err, "exit status 2")
}
func TestNaiveSelf(t *testing.T) {
if os.Getenv("TEST_CHECK") == "1" {
os.Exit(2)
}
cmd := exec.Command(naiveSelf(), "-test.run=TestNaiveSelf")
cmd.Env = append(os.Environ(), "TEST_CHECK=1")
err := cmd.Start()
assert.NilError(t, err, "Unable to start command")
err = cmd.Wait()
assert.Error(t, err, "exit status 2")
os.Args[0] = "mkdir"
assert.Check(t, naiveSelf() != os.Args[0])
}