github.com/rigado/snapd@v2.42.5-go-mod+incompatible/cmd/snapd/main_test.go (about)

     1  // -*- Mode: Go; indent-tabs-mode: t -*-
     2  
     3  /*
     4   * Copyright (C) 2018 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 main_test
    21  
    22  import (
    23  	"fmt"
    24  	"os"
    25  	"path/filepath"
    26  	"sync"
    27  	"testing"
    28  	"time"
    29  
    30  	. "gopkg.in/check.v1"
    31  
    32  	"github.com/snapcore/snapd/client"
    33  	"github.com/snapcore/snapd/dirs"
    34  	"github.com/snapcore/snapd/interfaces/apparmor"
    35  	"github.com/snapcore/snapd/interfaces/seccomp"
    36  	"github.com/snapcore/snapd/logger"
    37  	"github.com/snapcore/snapd/testutil"
    38  
    39  	snapd "github.com/snapcore/snapd/cmd/snapd"
    40  )
    41  
    42  // Hook up check.v1 into the "go test" runner
    43  func Test(t *testing.T) { TestingT(t) }
    44  
    45  type snapdSuite struct {
    46  	tmpdir string
    47  }
    48  
    49  var _ = Suite(&snapdSuite{})
    50  
    51  func (s *snapdSuite) SetUpTest(c *C) {
    52  	s.tmpdir = c.MkDir()
    53  	for _, d := range []string{"/var/lib/snapd", "/run"} {
    54  		err := os.MkdirAll(filepath.Join(s.tmpdir, d), 0755)
    55  		c.Assert(err, IsNil)
    56  	}
    57  	dirs.SetRootDir(s.tmpdir)
    58  }
    59  
    60  func (s *snapdSuite) TestSanityFailGoesIntoDegradedMode(c *C) {
    61  	logbuf, restore := logger.MockLogger()
    62  	defer restore()
    63  	restore = apparmor.MockIsHomeUsingNFS(func() (bool, error) { return false, nil })
    64  	defer restore()
    65  	restore = seccomp.MockSnapSeccompVersionInfo("abcdef 1.2.3 1234abcd -")
    66  	defer restore()
    67  
    68  	sanityErr := fmt.Errorf("foo failed")
    69  	sanityCalled := make(chan bool)
    70  	sanityRan := 0
    71  	restore = snapd.MockSanityCheck(func() error {
    72  		sanityRan++
    73  		// Ensure this ran at least *twice* to avoid a race here:
    74  		// If we close the channel and this wakes up the "select"
    75  		// below immediately and stops this go-routine then the
    76  		// check that the logbuf contains the error will fail.
    77  		// By running this at least twice we know the error made
    78  		// it to the log.
    79  		if sanityRan == 2 {
    80  			close(sanityCalled)
    81  		}
    82  		return sanityErr
    83  	})
    84  	defer restore()
    85  
    86  	restore = snapd.MockCheckRunningConditionsRetryDelay(10 * time.Millisecond)
    87  	defer restore()
    88  
    89  	// run the daemon
    90  	ch := make(chan os.Signal)
    91  	wg := sync.WaitGroup{}
    92  	wg.Add(1)
    93  	go func() {
    94  		defer wg.Done()
    95  		err := snapd.Run(ch)
    96  		c.Check(err, IsNil)
    97  	}()
    98  
    99  	sanityCheckWasRun := false
   100  	select {
   101  	case <-time.After(5 * time.Second):
   102  	case _, stillOpen := <-sanityCalled:
   103  		c.Assert(stillOpen, Equals, false)
   104  		sanityCheckWasRun = true
   105  	}
   106  	c.Check(sanityCheckWasRun, Equals, true)
   107  	c.Check(logbuf.String(), testutil.Contains, "system does not fully support snapd: foo failed")
   108  
   109  	// verify that talking to the daemon yields the sanity error
   110  	// message
   111  	// disable keepliave as it would sometimes cause the daemon to be
   112  	// blocked when closing connections during graceful shutdown
   113  	cli := client.New(&client.Config{DisableKeepAlive: true})
   114  	_, err := cli.Abort("123")
   115  	c.Check(err, ErrorMatches, "system does not fully support snapd: foo failed")
   116  
   117  	// verify that the sysinfo command is still available
   118  	_, err = cli.SysInfo()
   119  	c.Check(err, IsNil)
   120  
   121  	// stop the daemon
   122  	close(ch)
   123  	wg.Wait()
   124  }