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// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause
package dirwalk
import (
"fmt"
"os"
"path/filepath"
"reflect"
"runtime"
"sort"
"testing"
"go4.org/mem"
"tailscale.com/tstest"
)
func TestWalkShallowOSSpecific(t *testing.T) {
if osWalkShallow == nil {
t.Skip("no OS-specific implementation")
}
testWalkShallow(t, false)
}
func TestWalkShallowPortable(t *testing.T) {
testWalkShallow(t, true)
}
func testWalkShallow(t *testing.T, portable bool) {
if portable {
tstest.Replace(t, &osWalkShallow, nil)
}
d := t.TempDir()
t.Run("basics", func(t *testing.T) {
if err := os.WriteFile(filepath.Join(d, "foo"), []byte("1"), 0600); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(filepath.Join(d, "bar"), []byte("22"), 0400); err != nil {
t.Fatal(err)
}
if err := os.Mkdir(filepath.Join(d, "baz"), 0777); err != nil {
t.Fatal(err)
}
var got []string
if err := WalkShallow(mem.S(d), func(name mem.RO, de os.DirEntry) error {
var size int64
if fi, err := de.Info(); err != nil {
t.Errorf("Info stat error on %q: %v", de.Name(), err)
} else if !fi.IsDir() {
size = fi.Size()
}
got = append(got, fmt.Sprintf("%q %q dir=%v type=%d size=%v", name.StringCopy(), de.Name(), de.IsDir(), de.Type(), size))
return nil
}); err != nil {
t.Fatal(err)
}
sort.Strings(got)
want := []string{
`"bar" "bar" dir=false type=0 size=2`,
`"baz" "baz" dir=true type=2147483648 size=0`,
`"foo" "foo" dir=false type=0 size=1`,
}
if !reflect.DeepEqual(got, want) {
t.Errorf("mismatch:\n got %#q\nwant %#q", got, want)
}
})
t.Run("err_not_exist", func(t *testing.T) {
err := WalkShallow(mem.S(filepath.Join(d, "not_exist")), func(name mem.RO, de os.DirEntry) error {
return nil
})
if !os.IsNotExist(err) {
t.Errorf("unexpected error: %v", err)
}
})
t.Run("allocs", func(t *testing.T) {
allocs := int(testing.AllocsPerRun(1000, func() {
if err := WalkShallow(mem.S(d), func(name mem.RO, de os.DirEntry) error { return nil }); err != nil {
t.Fatal(err)
}
}))
t.Logf("allocs = %v", allocs)
if !portable && runtime.GOOS == "linux" && allocs != 0 {
t.Errorf("unexpected allocs: got %v, want 0", allocs)
}
})
}
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