github.com/containerd/nerdctl@v1.7.7/cmd/nerdctl/container_restart_linux_test.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  package main
    18  
    19  import (
    20  	"fmt"
    21  	"strings"
    22  	"testing"
    23  	"time"
    24  
    25  	"github.com/containerd/nerdctl/pkg/testutil"
    26  	"gotest.tools/v3/assert"
    27  )
    28  
    29  func TestRestart(t *testing.T) {
    30  	t.Parallel()
    31  	base := testutil.NewBase(t)
    32  	tID := testutil.Identifier(t)
    33  
    34  	base.Cmd("run", "-d", "--name", tID, testutil.NginxAlpineImage).AssertOK()
    35  	defer base.Cmd("rm", "-f", tID).AssertOK()
    36  	base.EnsureContainerStarted(tID)
    37  
    38  	inspect := base.InspectContainer(tID)
    39  	pid := inspect.State.Pid
    40  
    41  	base.Cmd("restart", tID).AssertOK()
    42  	base.EnsureContainerStarted(tID)
    43  
    44  	newInspect := base.InspectContainer(tID)
    45  	newPid := newInspect.State.Pid
    46  	assert.Assert(t, pid != newPid)
    47  }
    48  
    49  func TestRestartPIDContainer(t *testing.T) {
    50  	t.Parallel()
    51  	base := testutil.NewBase(t)
    52  
    53  	baseContainerName := testutil.Identifier(t)
    54  	base.Cmd("run", "-d", "--name", baseContainerName, testutil.AlpineImage, "sleep", "infinity").AssertOK()
    55  	defer base.Cmd("rm", "-f", baseContainerName).Run()
    56  
    57  	sharedContainerName := fmt.Sprintf("%s-shared", baseContainerName)
    58  	base.Cmd("run", "-d", "--name", sharedContainerName, fmt.Sprintf("--pid=container:%s", baseContainerName), testutil.AlpineImage, "sleep", "infinity").AssertOK()
    59  	defer base.Cmd("rm", "-f", sharedContainerName).Run()
    60  
    61  	base.Cmd("restart", baseContainerName).AssertOK()
    62  	base.Cmd("restart", sharedContainerName).AssertOK()
    63  
    64  	// output format : <inode number> /proc/1/ns/pid
    65  	// example output: 4026532581 /proc/1/ns/pid
    66  	basePSResult := base.Cmd("exec", baseContainerName, "ls", "-Li", "/proc/1/ns/pid").Run()
    67  	baseOutput := strings.TrimSpace(basePSResult.Stdout())
    68  	sharedPSResult := base.Cmd("exec", sharedContainerName, "ls", "-Li", "/proc/1/ns/pid").Run()
    69  	sharedOutput := strings.TrimSpace(sharedPSResult.Stdout())
    70  
    71  	assert.Equal(t, baseOutput, sharedOutput)
    72  }
    73  
    74  func TestRestartWithTime(t *testing.T) {
    75  	t.Parallel()
    76  	base := testutil.NewBase(t)
    77  	tID := testutil.Identifier(t)
    78  
    79  	base.Cmd("run", "-d", "--name", tID, testutil.AlpineImage, "sleep", "infinity").AssertOK()
    80  	defer base.Cmd("rm", "-f", tID).AssertOK()
    81  
    82  	inspect := base.InspectContainer(tID)
    83  	pid := inspect.State.Pid
    84  
    85  	timePreRestart := time.Now()
    86  	base.Cmd("restart", "-t", "5", tID).AssertOK()
    87  	timePostRestart := time.Now()
    88  
    89  	newInspect := base.InspectContainer(tID)
    90  	newPid := newInspect.State.Pid
    91  	assert.Assert(t, pid != newPid)
    92  	// ensure that stop took at least 5 seconds
    93  	assert.Assert(t, timePostRestart.Sub(timePreRestart) >= time.Second*5)
    94  }