github.com/go-xe2/third@v1.0.3/golang.org/x/sys/unix/syscall_darwin_test.go (about)

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package unix_test
     6  
     7  import (
     8  	"os"
     9  	"testing"
    10  
    11  	"github.com/go-xe2/third/golang.org/x/sys/unix"
    12  )
    13  
    14  // stringsFromByteSlice converts a sequence of attributes to a []string.
    15  // On Darwin, each entry is a NULL-terminated string.
    16  func stringsFromByteSlice(buf []byte) []string {
    17  	var result []string
    18  	off := 0
    19  	for i, b := range buf {
    20  		if b == 0 {
    21  			result = append(result, string(buf[off:i]))
    22  			off = i + 1
    23  		}
    24  	}
    25  	return result
    26  }
    27  
    28  func TestUtimesNanoAt(t *testing.T) {
    29  	defer chtmpdir(t)()
    30  
    31  	symlink := "symlink1"
    32  	os.Remove(symlink)
    33  	err := os.Symlink("nonexisting", symlink)
    34  	if err != nil {
    35  		t.Fatal(err)
    36  	}
    37  
    38  	ts := []unix.Timespec{
    39  		{Sec: 1111, Nsec: 2222},
    40  		{Sec: 3333, Nsec: 4444},
    41  	}
    42  	err = unix.UtimesNanoAt(unix.AT_FDCWD, symlink, ts, unix.AT_SYMLINK_NOFOLLOW)
    43  	if err != nil {
    44  		t.Fatalf("UtimesNanoAt: %v", err)
    45  	}
    46  
    47  	var st unix.Stat_t
    48  	err = unix.Lstat(symlink, &st)
    49  	if err != nil {
    50  		t.Fatalf("Lstat: %v", err)
    51  	}
    52  
    53  	// Only check Mtimespec, Atimespec might not be supported by the underlying filesystem
    54  	expected := ts[1]
    55  	if st.Mtimespec.Nsec == 0 {
    56  		// Some filesystems only support 1-second time stamp resolution
    57  		// and will always set Nsec to 0.
    58  		expected.Nsec = 0
    59  	}
    60  	if st.Mtimespec != expected {
    61  		t.Errorf("UtimesNanoAt: wrong mtime: got %v, expected %v", st.Mtimespec, expected)
    62  	}
    63  }