So it can adapt to certain env (like tcp vs unix socket for docker suite) Signed-off-by: Vincent Demeester <vincent@sbr.pm>
89 lines
2.1 KiB
Go
89 lines
2.1 KiB
Go
package utils
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"os/exec"
|
|
"strings"
|
|
"testing"
|
|
)
|
|
|
|
var traefikBinary = "traefik"
|
|
|
|
func TestRunCommand(t *testing.T) {
|
|
// Override exec.Command :D
|
|
execCommand = fakeExecCommand
|
|
_, output, err := RunCommand(traefikBinary, "it", "works")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if output != "it works" {
|
|
t.Fatalf("Expected 'it works' as output, got : %q", output)
|
|
}
|
|
}
|
|
|
|
func TestRunCommandError(t *testing.T) {
|
|
// Override exec.Command :D
|
|
execCommand = fakeExecCommand
|
|
_, output, err := RunCommand(traefikBinary, "an", "error")
|
|
if err == nil {
|
|
t.Fatalf("Expected an error, got %q", output)
|
|
}
|
|
}
|
|
|
|
// Helpers :)
|
|
|
|
// Type implementing the io.Writer interface for analyzing output.
|
|
type String struct {
|
|
value string
|
|
}
|
|
|
|
// The only function required by the io.Writer interface. Will append
|
|
// written data to the String.value string.
|
|
func (s *String) Write(p []byte) (n int, err error) {
|
|
s.value += string(p)
|
|
return len(p), nil
|
|
}
|
|
|
|
// Helper function that mock the exec.Command call (and call the test binary)
|
|
func fakeExecCommand(command string, args ...string) *exec.Cmd {
|
|
cs := []string{"-test.run=TestHelperProcess", "--", command}
|
|
cs = append(cs, args...)
|
|
cmd := exec.Command(os.Args[0], cs...)
|
|
cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
|
|
return cmd
|
|
}
|
|
|
|
func TestHelperProcess(t *testing.T) {
|
|
if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
|
|
return
|
|
}
|
|
args := os.Args
|
|
|
|
// Previous arguments are tests stuff, that looks like :
|
|
// /tmp/go-build970079519/…/_test/integration.test -test.run=TestHelperProcess --
|
|
cmd, args := args[3], args[4:]
|
|
// Handle the case where args[0] is dir:...
|
|
|
|
switch cmd {
|
|
case traefikBinary:
|
|
argsStr := strings.Join(args, " ")
|
|
switch argsStr {
|
|
case "an exitCode 127":
|
|
fmt.Fprintf(os.Stderr, "an error has occurred with exitCode 127")
|
|
os.Exit(127)
|
|
case "an error":
|
|
fmt.Fprintf(os.Stderr, "an error has occurred")
|
|
os.Exit(1)
|
|
case "it works":
|
|
fmt.Fprintf(os.Stdout, "it works")
|
|
default:
|
|
fmt.Fprintf(os.Stdout, "no arguments")
|
|
}
|
|
default:
|
|
fmt.Fprintf(os.Stderr, "Command %s not found.", cmd)
|
|
os.Exit(1)
|
|
}
|
|
// some code here to check arguments perhaps?
|
|
os.Exit(0)
|
|
}
|