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|
package gucumber
import (
"fmt"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"text/template"
)
const (
importMarkerFile = "importmarker__.go"
testFile = "gucumbertest__.go"
)
func BuildAndRunDir(dir string, filters []string) error {
defer buildCleanup(dir)
info := buildInfo{
Imports: []string{},
FeaturesPath: fmt.Sprintf("%q", dir),
Filters: filters,
}
goFiles, _ := filepath.Glob(filepath.Join(dir, "*.go"))
goFiles2, _ := filepath.Glob(filepath.Join(dir, "**", "*.go"))
goFiles = append(goFiles, goFiles2...)
// write special constants to packages so they can be imported
for _, file := range goFiles {
ifile := filepath.Join(filepath.Dir(file), importMarkerFile)
if _, err := os.Stat(ifile); err != nil {
pkgName := filepath.Base(filepath.Dir(file))
if pkgName == "_test" {
continue
}
fullPkg := assembleImportPath(file)
if fullPkg == "" {
return fmt.Errorf("could not determine package path for %s", file)
}
info.Imports = append(info.Imports, fullPkg)
src := fmt.Sprintf("package %s\nvar IMPORT_MARKER = true\n", pkgName)
err = ioutil.WriteFile(ifile, []byte(src), 0664)
if err != nil {
return err
}
}
}
// write main test stub
os.MkdirAll(filepath.Join(dir, "_test"), 0777)
f, err := os.Create(filepath.Join(dir, "_test", testFile))
if err != nil {
return err
}
tplMain.Execute(f, info)
f.Close()
// now run the command
tfile := "./" + filepath.ToSlash(dir) + "/_test/" + testFile
cmd := exec.Command("go", "run", tfile)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
if err := cmd.Run(); err != nil {
buildCleanup(dir)
os.Exit(1)
}
return nil
}
// ToSlash is being used to coerce the different
// os PathSeparators into the forward slash
// as the forward slash is required by Go's import statement
func assembleImportPath(file string) string {
a, _ := filepath.Abs(filepath.Dir(file))
absPath, fullPkg := filepath.ToSlash(a), ""
for _, p := range filepath.SplitList(os.Getenv("GOPATH")) {
a, _ = filepath.Abs(p)
p = filepath.ToSlash(a)
if strings.HasPrefix(absPath, p) {
prefixPath := filepath.ToSlash(filepath.Join(p, "src"))
rpath, _ := filepath.Rel(prefixPath, absPath)
fullPkg = filepath.ToSlash(rpath)
break
}
}
return fullPkg
}
type buildInfo struct {
Imports []string
FeaturesPath string
Filters []string
}
func buildCleanup(dir string) {
g, _ := filepath.Glob(filepath.Join(dir, importMarkerFile))
g2, _ := filepath.Glob(filepath.Join(dir, "**", importMarkerFile))
g = append(g, g2...)
for _, d := range g {
os.Remove(d)
}
p := filepath.Join(dir, "_test")
if _, err := os.Stat(p); err == nil {
os.RemoveAll(p)
}
}
var tplMain = template.Must(template.New("main").Parse(`
package main
import (
"github.com/lsegal/gucumber"
{{range $n, $i := .Imports}}_i{{$n}} "{{$i}}"
{{end}}
)
var (
{{range $n, $i := .Imports}}_ci{{$n}} = _i{{$n}}.IMPORT_MARKER
{{end}}
)
func main() {
{{if .Filters}}
gucumber.GlobalContext.Filters = []string{
{{range $_, $f := .Filters}}"{{$f}}",
{{end}}
}
{{end}}
gucumber.GlobalContext.RunDir({{.FeaturesPath}})
}
`))
|
