github.com/hugh712/snapd@v0.0.0-20200910133618-1a99902bd583/strutil/cmdline_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2014-2015 Canonical Ltd
     5   *
     6   * This program is free software: you can redistribute it and/or modify
     7   * it under the terms of the GNU General Public License version 3 as
     8   * published by the Free Software Foundation.
     9   *
    10   * This program is distributed in the hope that it will be useful,
    11   * but WITHOUT ANY WARRANTY; without even the implied warranty of
    12   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    13   * GNU General Public License for more details.
    14   *
    15   * You should have received a copy of the GNU General Public License
    16   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
    17   *
    18   */
    19  
    20  package strutil_test
    21  
    22  import (
    23  	. "gopkg.in/check.v1"
    24  
    25  	"github.com/snapcore/snapd/strutil"
    26  )
    27  
    28  type cmdlineTestSuite struct{}
    29  
    30  var _ = Suite(&cmdlineTestSuite{})
    31  
    32  func (s *cmdlineTestSuite) TestSplitKernelCommandLine(c *C) {
    33  	for idx, tc := range []struct {
    34  		cmd    string
    35  		exp    []string
    36  		errStr string
    37  	}{
    38  		{cmd: ``, exp: nil},
    39  		{cmd: `foo bar baz`, exp: []string{"foo", "bar", "baz"}},
    40  		{cmd: `foo=" many   spaces  " bar`, exp: []string{`foo=" many   spaces  "`, "bar"}},
    41  		{cmd: `foo="1$2"`, exp: []string{`foo="1$2"`}},
    42  		{cmd: `foo=1$2`, exp: []string{`foo=1$2`}},
    43  		{cmd: `foo= bar`, exp: []string{"foo=", "bar"}},
    44  		{cmd: `foo=""`, exp: []string{`foo=""`}},
    45  		{cmd: `   cpu=1,2,3   mem=0x2000;0x4000:$2  `, exp: []string{"cpu=1,2,3", "mem=0x2000;0x4000:$2"}},
    46  		{cmd: "isolcpus=1,2,10-20,100-2000:2/25", exp: []string{"isolcpus=1,2,10-20,100-2000:2/25"}},
    47  		// something more realistic
    48  		{
    49  			cmd: `BOOT_IMAGE=/vmlinuz-linux root=/dev/mapper/linux-root rw quiet loglevel=3 rd.udev.log_priority=3 vt.global_cursor_default=0 rd.luks.uuid=1a273f76-3118-434b-8597-a3b12a59e017 rd.luks.uuid=775e4582-33c1-423b-ac19-f734e0d5e21c rd.luks.options=discard,timeout=0 root=/dev/mapper/linux-root apparmor=1 security=apparmor`,
    50  			exp: []string{
    51  				"BOOT_IMAGE=/vmlinuz-linux",
    52  				"root=/dev/mapper/linux-root",
    53  				"rw", "quiet",
    54  				"loglevel=3",
    55  				"rd.udev.log_priority=3",
    56  				"vt.global_cursor_default=0",
    57  				"rd.luks.uuid=1a273f76-3118-434b-8597-a3b12a59e017",
    58  				"rd.luks.uuid=775e4582-33c1-423b-ac19-f734e0d5e21c",
    59  				"rd.luks.options=discard,timeout=0",
    60  				"root=/dev/mapper/linux-root",
    61  				"apparmor=1",
    62  				"security=apparmor",
    63  			},
    64  		},
    65  		// this is actually ok, eg. rd.luks.options=discard,timeout=0
    66  		{cmd: `a=b=`, exp: []string{"a=b="}},
    67  		// bad quoting, or otherwise malformed command line
    68  		{cmd: `foo="1$2`, errStr: "unbalanced quoting"},
    69  		{cmd: `"foo"`, errStr: "unexpected quoting"},
    70  		{cmd: `foo"foo"`, errStr: "unexpected quoting"},
    71  		{cmd: `foo=foo"`, errStr: "unexpected quoting"},
    72  		{cmd: `foo="a""b"`, errStr: "unexpected quoting"},
    73  		{cmd: `foo="a foo="b`, errStr: "unexpected argument"},
    74  		{cmd: `foo="a"="b"`, errStr: "unexpected assignment"},
    75  		{cmd: `=`, errStr: "unexpected assignment"},
    76  		{cmd: `a =`, errStr: "unexpected assignment"},
    77  		{cmd: `="foo"`, errStr: "unexpected assignment"},
    78  		{cmd: `a==`, errStr: "unexpected assignment"},
    79  		{cmd: `foo ==a`, errStr: "unexpected assignment"},
    80  	} {
    81  		c.Logf("%v: cmd: %q", idx, tc.cmd)
    82  		out, err := strutil.KernelCommandLineSplit(tc.cmd)
    83  		if tc.errStr != "" {
    84  			c.Assert(err, ErrorMatches, tc.errStr)
    85  			c.Check(out, IsNil)
    86  		} else {
    87  			c.Assert(err, IsNil)
    88  			c.Check(out, DeepEquals, tc.exp)
    89  		}
    90  	}
    91  }