github.com/dolotech/hongbao@v0.0.0-20191130105438-fd59d7a5dda5/src/golang.org/x/sys/unix/dev_netbsd_test.go (about) 1 // Copyright 2017 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 "fmt" 9 "testing" 10 11 "golang.org/x/sys/unix" 12 ) 13 14 func TestDevices(t *testing.T) { 15 testCases := []struct { 16 path string 17 major uint32 18 minor uint32 19 }{ 20 // well known major/minor numbers according to /dev/MAKEDEV on 21 // NetBSD 7.0 22 {"/dev/null", 2, 2}, 23 {"/dev/zero", 2, 12}, 24 {"/dev/ttyp0", 5, 0}, 25 {"/dev/ttyp1", 5, 1}, 26 {"/dev/random", 46, 0}, 27 {"/dev/urandom", 46, 1}, 28 } 29 for _, tc := range testCases { 30 t.Run(fmt.Sprintf("%s %v:%v", tc.path, tc.major, tc.minor), func(t *testing.T) { 31 var stat unix.Stat_t 32 err := unix.Stat(tc.path, &stat) 33 if err != nil { 34 t.Errorf("failed to stat device: %v", err) 35 return 36 } 37 38 dev := uint64(stat.Rdev) 39 if unix.Major(dev) != tc.major { 40 t.Errorf("for %s Major(%#x) == %d, want %d", tc.path, dev, unix.Major(dev), tc.major) 41 } 42 if unix.Minor(dev) != tc.minor { 43 t.Errorf("for %s Minor(%#x) == %d, want %d", tc.path, dev, unix.Minor(dev), tc.minor) 44 } 45 if unix.Mkdev(tc.major, tc.minor) != dev { 46 t.Errorf("for %s Mkdev(%d, %d) == %#x, want %#x", tc.path, tc.major, tc.minor, unix.Mkdev(tc.major, tc.minor), dev) 47 } 48 }) 49 } 50 }