forked from cucumber/godog
/
main.go
126 lines (108 loc) · 2.84 KB
/
main.go
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package main
import (
"fmt"
"go/build"
"io"
"os"
"os/exec"
"path/filepath"
"regexp"
"strconv"
"syscall"
"github.com/DATA-DOG/godog"
"github.com/DATA-DOG/godog/colors"
)
var statusMatch = regexp.MustCompile("^exit status (\\d+)")
var parsedStatus int
func buildAndRun() (int, error) {
var status int
bin, err := filepath.Abs("godog.test")
if err != nil {
return 1, err
}
if build.Default.GOOS == "windows" {
bin += ".exe"
}
if err = godog.Build(bin); err != nil {
return 1, err
}
defer os.Remove(bin)
cmd := exec.Command(bin, os.Args[1:]...)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
cmd.Stdin = os.Stdin
cmd.Env = os.Environ()
if err = cmd.Start(); err != nil {
return status, err
}
if err = cmd.Wait(); err != nil {
if exiterr, ok := err.(*exec.ExitError); ok {
// The program has exited with an exit code != 0
status = 1
// This works on both Unix and Windows. Although package
// syscall is generally platform dependent, WaitStatus is
// defined for both Unix and Windows and in both cases has
// an ExitStatus() method with the same signature.
if st, ok := exiterr.Sys().(syscall.WaitStatus); ok {
status = st.ExitStatus()
}
return status, nil
}
return status, err
}
return status, nil
}
func main() {
var vers bool
var output string
opt := godog.Options{Output: colors.Colored(os.Stdout)}
flagSet := godog.FlagSet(&opt)
flagSet.BoolVar(&vers, "version", false, "Show current version.")
flagSet.StringVar(&output, "o", "", "Build and output test runner executable to given target path.")
flagSet.StringVar(&output, "output", "", "Build and output test runner executable to given target path.")
if err := flagSet.Parse(os.Args[1:]); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
if len(output) > 0 {
bin, err := filepath.Abs(output)
if err != nil {
fmt.Fprintln(os.Stderr, "could not locate absolute path for:", output, err)
os.Exit(1)
}
if err = godog.Build(bin); err != nil {
fmt.Fprintln(os.Stderr, "could not build binary at:", output, err)
os.Exit(1)
}
os.Exit(0)
}
if vers {
fmt.Fprintln(os.Stdout, "Godog version is:", godog.Version)
os.Exit(0) // should it be 0?
}
status, err := buildAndRun()
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
// it might be a case, that status might not be resolved
// in some OSes. this is attempt to parse it from stderr
if parsedStatus > status {
status = parsedStatus
}
os.Exit(status)
}
func statusOutputFilter(w io.Writer) io.Writer {
return writerFunc(func(b []byte) (int, error) {
if m := statusMatch.FindStringSubmatch(string(b)); len(m) > 1 {
parsedStatus, _ = strconv.Atoi(m[1])
// skip status stderr output
return len(b), nil
}
return w.Write(b)
})
}
type writerFunc func([]byte) (int, error)
func (w writerFunc) Write(b []byte) (int, error) {
return w(b)
}