vendor/golang.org/x/sys/unix/dev_darwin_test.go

   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                 // Most of the device major/minor numbers on Darwin are
  21                 // dynamically generated by devfs. These are some well-known
  22                 // static numbers.
  23                 {"/dev/ttyp0", 4, 0},
  24                 {"/dev/ttys0", 4, 48},
  25                 {"/dev/ptyp0", 5, 0},
  26                 {"/dev/ptyr0", 5, 32},
  27         }
  28         for _, tc := range testCases {
  29                 t.Run(fmt.Sprintf("%s %v:%v", tc.path, tc.major, tc.minor), func(t *testing.T) {
  30                         var stat unix.Stat_t
  31                         err := unix.Stat(tc.path, &stat)
  32                         if err != nil {
  33                                 t.Errorf("failed to stat device: %v", err)
  34                                 return
  35                         }
  36
  37                         dev := uint64(stat.Rdev)
  38                         if unix.Major(dev) != tc.major {
  39                                 t.Errorf("for %s Major(%#x) == %d, want %d", tc.path, dev, unix.Major(dev), tc.major)
  40                         }
  41                         if unix.Minor(dev) != tc.minor {
  42                                 t.Errorf("for %s Minor(%#x) == %d, want %d", tc.path, dev, unix.Minor(dev), tc.minor)
  43                         }
  44                         if unix.Mkdev(tc.major, tc.minor) != dev {
  45                                 t.Errorf("for %s Mkdev(%d, %d) == %#x, want %#x", tc.path, tc.major, tc.minor, unix.Mkdev(tc.major, tc.minor), dev)
  46                         }
  47                 })
  48         }
  49 }