зеркало из https://github.com/golang/sys.git
58 строки
1.5 KiB
Go
58 строки
1.5 KiB
Go
// Copyright 2017 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build go1.7
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// +build go1.7
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package unix_test
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import (
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"fmt"
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"testing"
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"golang.org/x/sys/unix"
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)
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func TestDevices(t *testing.T) {
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testCases := []struct {
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path string
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major uint32
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minor uint32
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}{
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// well known major/minor numbers according to
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// https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/devices.txt
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{"/dev/null", 1, 3},
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{"/dev/zero", 1, 5},
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{"/dev/random", 1, 8},
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{"/dev/full", 1, 7},
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{"/dev/urandom", 1, 9},
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{"/dev/tty", 5, 0},
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}
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for _, tc := range testCases {
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t.Run(fmt.Sprintf("%s %v:%v", tc.path, tc.major, tc.minor), func(t *testing.T) {
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var stat unix.Stat_t
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err := unix.Stat(tc.path, &stat)
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if err != nil {
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if err == unix.EACCES {
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t.Skip("no permission to stat device, skipping test")
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}
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t.Errorf("failed to stat device: %v", err)
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return
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}
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dev := uint64(stat.Rdev)
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if unix.Major(dev) != tc.major {
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t.Errorf("for %s Major(%#x) == %d, want %d", tc.path, dev, unix.Major(dev), tc.major)
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}
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if unix.Minor(dev) != tc.minor {
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t.Errorf("for %s Minor(%#x) == %d, want %d", tc.path, dev, unix.Minor(dev), tc.minor)
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}
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if unix.Mkdev(tc.major, tc.minor) != dev {
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t.Errorf("for %s Mkdev(%d, %d) == %#x, want %#x", tc.path, tc.major, tc.minor, unix.Mkdev(tc.major, tc.minor), dev)
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}
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})
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}
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}
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