1 files changed, 54 insertions, 0 deletions
diff --git a/src/syscall/syscall_freebsd_test.go b/src/syscall/syscall_freebsd_test.go
new file mode 100644
index 0000000..3ccfe5d
--- /dev/null
+++ b/src/syscall/syscall_freebsd_test.go
@@ -0,0 +1,54 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd
+
+package syscall_test
+
+import (
+	"fmt"
+	"syscall"
+	"testing"
+	"unsafe"
+)
+
+func TestConvertFromDirent11(t *testing.T) {
+	const (
+		filenameFmt  = "%04d"
+		numFiles     = 64
+		fixedHdrSize = int(unsafe.Offsetof(syscall.Dirent_freebsd11{}.Name))
+	)
+
+	namlen := len(fmt.Sprintf(filenameFmt, 0))
+	reclen := syscall.Roundup(fixedHdrSize+namlen+1, 4)
+	old := make([]byte, numFiles*reclen)
+	for i := 0; i < numFiles; i++ {
+		dent := syscall.Dirent_freebsd11{
+			Fileno: uint32(i + 1),
+			Reclen: uint16(reclen),
+			Type:   syscall.DT_REG,
+			Namlen: uint8(namlen),
+		}
+		rec := make([]byte, reclen)
+		copy(rec, (*[fixedHdrSize]byte)(unsafe.Pointer(&dent))[:])
+		copy(rec[fixedHdrSize:], fmt.Sprintf(filenameFmt, i+1))
+		copy(old[i*reclen:], rec)
+	}
+
+	buf := make([]byte, 2*len(old))
+	n := syscall.ConvertFromDirents11(buf, old)
+
+	names := make([]string, 0, numFiles)
+	_, _, names = syscall.ParseDirent(buf[:n], -1, names)
+
+	if len(names) != numFiles {
+		t.Errorf("expected %d files, have %d; names: %q", numFiles, len(names), names)
+	}
+
+	for i, name := range names {
+		if expected := fmt.Sprintf(filenameFmt, i+1); name != expected {
+			t.Errorf("expected names[%d] to be %q; got %q", i, expected, name)
+		}
+	}
+}