unix: delete TestDevices test for Solaris

The test uses hardcoded numbers specific to one Solaris variant or
version. It's not guaranteed that they are stable over time or
across variants.

Fixes golang/go#25528

Change-Id: I148bd4d8264b802f07a2e886b99e76a40824af35
Reviewed-on: https://go-review.googlesource.com/114092Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

unix/dev_solaris_test.go

-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.7
-
-package unix_test
-
-import (
-	"fmt"
-	"testing"
-
-	"golang.org/x/sys/unix"
-)
-
-func TestDevices(t *testing.T) {
-	testCases := []struct {
-		path  string
-		major uint32
-		minor uint32
-	}{
-		// Well-known major/minor numbers on OpenSolaris according to
-		// /etc/name_to_major
-		{"/dev/zero", 134, 12},
-		{"/dev/null", 134, 2},
-		{"/dev/ptyp0", 172, 0},
-		{"/dev/ttyp0", 175, 0},
-		{"/dev/ttyp1", 175, 1},
-	}
-	for _, tc := range testCases {
-		t.Run(fmt.Sprintf("%s %v:%v", tc.path, tc.major, tc.minor), func(t *testing.T) {
-			var stat unix.Stat_t
-			err := unix.Stat(tc.path, &stat)
-			if err != nil {
-				t.Errorf("failed to stat device: %v", err)
-				return
-			}
-
-			dev := uint64(stat.Rdev)
-			if unix.Major(dev) != tc.major {
-				t.Errorf("for %s Major(%#x) == %d, want %d", tc.path, dev, unix.Major(dev), tc.major)
-			}
-			if unix.Minor(dev) != tc.minor {
-				t.Errorf("for %s Minor(%#x) == %d, want %d", tc.path, dev, unix.Minor(dev), tc.minor)
-			}
-			if unix.Mkdev(tc.major, tc.minor) != dev {
-				t.Errorf("for %s Mkdev(%d, %d) == %#x, want %#x", tc.path, tc.major, tc.minor, unix.Mkdev(tc.major, tc.minor), dev)
-			}
-		})
-	}
-}