github.com/uriddle/docker@v0.0.0-20210926094723-4072e6aeb013/integration-cli/docker_cli_diff_test.go (about)

     1  package main
     2  
     3  import (
     4  	"strings"
     5  
     6  	"github.com/docker/docker/pkg/integration/checker"
     7  	"github.com/go-check/check"
     8  )
     9  
    10  // ensure that an added file shows up in docker diff
    11  func (s *DockerSuite) TestDiffFilenameShownInOutput(c *check.C) {
    12  	testRequires(c, DaemonIsLinux)
    13  	containerCmd := `echo foo > /root/bar`
    14  	out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
    15  
    16  	cleanCID := strings.TrimSpace(out)
    17  	out, _ = dockerCmd(c, "diff", cleanCID)
    18  
    19  	found := false
    20  	for _, line := range strings.Split(out, "\n") {
    21  		if strings.Contains("A /root/bar", line) {
    22  			found = true
    23  			break
    24  		}
    25  	}
    26  	c.Assert(found, checker.True)
    27  }
    28  
    29  // test to ensure GH #3840 doesn't occur any more
    30  func (s *DockerSuite) TestDiffEnsureDockerinitFilesAreIgnored(c *check.C) {
    31  	testRequires(c, DaemonIsLinux)
    32  	// this is a list of files which shouldn't show up in `docker diff`
    33  	dockerinitFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerinit", "/.dockerenv"}
    34  	containerCount := 5
    35  
    36  	// we might not run into this problem from the first run, so start a few containers
    37  	for i := 0; i < containerCount; i++ {
    38  		containerCmd := `echo foo > /root/bar`
    39  		out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
    40  
    41  		cleanCID := strings.TrimSpace(out)
    42  		out, _ = dockerCmd(c, "diff", cleanCID)
    43  
    44  		for _, filename := range dockerinitFiles {
    45  			c.Assert(out, checker.Not(checker.Contains), filename)
    46  		}
    47  	}
    48  }
    49  
    50  func (s *DockerSuite) TestDiffEnsureOnlyKmsgAndPtmx(c *check.C) {
    51  	testRequires(c, DaemonIsLinux)
    52  	out, _ := dockerCmd(c, "run", "-d", "busybox", "sleep", "0")
    53  
    54  	cleanCID := strings.TrimSpace(out)
    55  	out, _ = dockerCmd(c, "diff", cleanCID)
    56  
    57  	expected := map[string]bool{
    58  		"C /dev":         true,
    59  		"A /dev/full":    true, // busybox
    60  		"C /dev/ptmx":    true, // libcontainer
    61  		"A /dev/mqueue":  true,
    62  		"A /dev/kmsg":    true,
    63  		"A /dev/fd":      true,
    64  		"A /dev/fuse":    true,
    65  		"A /dev/ptmx":    true,
    66  		"A /dev/null":    true,
    67  		"A /dev/random":  true,
    68  		"A /dev/stdout":  true,
    69  		"A /dev/stderr":  true,
    70  		"A /dev/tty1":    true,
    71  		"A /dev/stdin":   true,
    72  		"A /dev/tty":     true,
    73  		"A /dev/urandom": true,
    74  		"A /dev/zero":    true,
    75  	}
    76  
    77  	for _, line := range strings.Split(out, "\n") {
    78  		c.Assert(line == "" || expected[line], checker.True)
    79  	}
    80  }
    81  
    82  // https://github.com/docker/docker/pull/14381#discussion_r33859347
    83  func (s *DockerSuite) TestDiffEmptyArgClientError(c *check.C) {
    84  	out, _, err := dockerCmdWithError("diff", "")
    85  	c.Assert(err, checker.NotNil)
    86  	c.Assert(strings.TrimSpace(out), checker.Equals, "Container name cannot be empty")
    87  }