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//go:build testtool
package sandbox
import (
"errors"
"fmt"
"io/fs"
"path/filepath"
"strings"
)
var (
ErrFSBadLength = errors.New("bad dir length")
ErrFSBadData = errors.New("data differs")
ErrFSBadMode = errors.New("mode differs")
ErrFSInvalidEnt = errors.New("invalid entry condition")
)
type FS struct {
Mode fs.FileMode `json:"mode"`
Dir map[string]*FS `json:"dir"`
Data *string `json:"data"`
}
func printDir(prefix string, dir []fs.DirEntry) {
names := make([]string, len(dir))
for i, ent := range dir {
name := ent.Name()
if ent.IsDir() {
name += "/"
}
names[i] = fmt.Sprintf("%q", name)
}
printf("[FAIL] d %s: %s", prefix, strings.Join(names, " "))
}
func (s *FS) Compare(prefix string, e fs.FS) error {
if s.Data != nil {
if s.Dir != nil {
panic("invalid state")
}
panic("invalid compare call")
}
if s.Dir == nil {
printf("[ OK ] s %s", prefix)
return nil
}
var dir []fs.DirEntry
if d, err := fs.ReadDir(e, prefix); err != nil {
return err
} else if len(d) != len(s.Dir) {
printDir(prefix, d)
return ErrFSBadLength
} else {
dir = d
}
for _, got := range dir {
name := got.Name()
if want, ok := s.Dir[name]; !ok {
printDir(prefix, dir)
return fs.ErrNotExist
} else if want.Dir != nil && !got.IsDir() {
printDir(prefix, dir)
return ErrFSInvalidEnt
} else {
name = filepath.Join(prefix, name)
if fi, err := got.Info(); err != nil {
return err
} else if fi.Mode() != want.Mode {
printf("[FAIL] m %s: %x, want %x",
name, uint32(fi.Mode()), uint32(want.Mode))
return ErrFSBadMode
}
if want.Data != nil {
if want.Dir != nil {
panic("invalid state")
}
if v, err := fs.ReadFile(e, name); err != nil {
return err
} else if string(v) != *want.Data {
printf("[FAIL] f %s", name)
printf("got: %s", v)
printf("want: %s", *want.Data)
return ErrFSBadData
}
printf("[ OK ] f %s", name)
} else if err := want.Compare(name, e); err != nil {
return err
}
}
}
printf("[ OK ] d %s", prefix)
return nil
}
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