github.com/Aayushi-Bansal/sys@v0.0.0-20180118120756-90d962a959d8/unix/dev_openbsd_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  // +build go1.7
     6  
     7  package unix_test
     8  
     9  import (
    10  	"fmt"
    11  	"testing"
    12  
    13  	"golang.org/x/sys/unix"
    14  )
    15  
    16  func TestDevices(t *testing.T) {
    17  	testCases := []struct {
    18  		path  string
    19  		major uint32
    20  		minor uint32
    21  	}{
    22  		// well known major/minor numbers according to /dev/MAKEDEV on
    23  		// OpenBSD 6.0
    24  		{"/dev/null", 2, 2},
    25  		{"/dev/zero", 2, 12},
    26  		{"/dev/ttyp0", 5, 0},
    27  		{"/dev/ttyp1", 5, 1},
    28  		{"/dev/random", 45, 0},
    29  		{"/dev/srandom", 45, 1},
    30  		{"/dev/urandom", 45, 2},
    31  		{"/dev/arandom", 45, 3},
    32  	}
    33  	for _, tc := range testCases {
    34  		t.Run(fmt.Sprintf("%s %v:%v", tc.path, tc.major, tc.minor), func(t *testing.T) {
    35  			var stat unix.Stat_t
    36  			err := unix.Stat(tc.path, &stat)
    37  			if err != nil {
    38  				t.Errorf("failed to stat device: %v", err)
    39  				return
    40  			}
    41  
    42  			dev := uint64(stat.Rdev)
    43  			if unix.Major(dev) != tc.major {
    44  				t.Errorf("for %s Major(%#x) == %d, want %d", tc.path, dev, unix.Major(dev), tc.major)
    45  			}
    46  			if unix.Minor(dev) != tc.minor {
    47  				t.Errorf("for %s Minor(%#x) == %d, want %d", tc.path, dev, unix.Minor(dev), tc.minor)
    48  			}
    49  			if unix.Mkdev(tc.major, tc.minor) != dev {
    50  				t.Errorf("for %s Mkdev(%d, %d) == %#x, want %#x", tc.path, tc.major, tc.minor, unix.Mkdev(tc.major, tc.minor), dev)
    51  			}
    52  		})
    53  	}
    54  }