github.com/tompao/docker@v1.9.1/integration-cli/docker_cli_diff_test.go (about)

     1  package main
     2  
     3  import (
     4  	"strings"
     5  
     6  	"github.com/go-check/check"
     7  )
     8  
     9  // ensure that an added file shows up in docker diff
    10  func (s *DockerSuite) TestDiffFilenameShownInOutput(c *check.C) {
    11  	testRequires(c, DaemonIsLinux)
    12  	containerCmd := `echo foo > /root/bar`
    13  	out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
    14  
    15  	cleanCID := strings.TrimSpace(out)
    16  	out, _ = dockerCmd(c, "diff", cleanCID)
    17  
    18  	found := false
    19  	for _, line := range strings.Split(out, "\n") {
    20  		if strings.Contains("A /root/bar", line) {
    21  			found = true
    22  			break
    23  		}
    24  	}
    25  	if !found {
    26  		c.Errorf("couldn't find the new file in docker diff's output: %v", out)
    27  	}
    28  }
    29  
    30  // test to ensure GH #3840 doesn't occur any more
    31  func (s *DockerSuite) TestDiffEnsureDockerinitFilesAreIgnored(c *check.C) {
    32  	testRequires(c, DaemonIsLinux)
    33  	// this is a list of files which shouldn't show up in `docker diff`
    34  	dockerinitFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerinit", "/.dockerenv"}
    35  	containerCount := 5
    36  
    37  	// we might not run into this problem from the first run, so start a few containers
    38  	for i := 0; i < containerCount; i++ {
    39  		containerCmd := `echo foo > /root/bar`
    40  		out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
    41  
    42  		cleanCID := strings.TrimSpace(out)
    43  		out, _ = dockerCmd(c, "diff", cleanCID)
    44  
    45  		for _, filename := range dockerinitFiles {
    46  			if strings.Contains(out, filename) {
    47  				c.Errorf("found file which should've been ignored %v in diff output", filename)
    48  			}
    49  		}
    50  	}
    51  }
    52  
    53  func (s *DockerSuite) TestDiffEnsureOnlyKmsgAndPtmx(c *check.C) {
    54  	testRequires(c, DaemonIsLinux)
    55  	out, _ := dockerCmd(c, "run", "-d", "busybox", "sleep", "0")
    56  
    57  	cleanCID := strings.TrimSpace(out)
    58  	out, _ = dockerCmd(c, "diff", cleanCID)
    59  
    60  	expected := map[string]bool{
    61  		"C /dev":         true,
    62  		"A /dev/full":    true, // busybox
    63  		"C /dev/ptmx":    true, // libcontainer
    64  		"A /dev/mqueue":  true, // lxc
    65  		"A /dev/kmsg":    true, // lxc
    66  		"A /dev/fd":      true,
    67  		"A /dev/fuse":    true,
    68  		"A /dev/ptmx":    true,
    69  		"A /dev/null":    true,
    70  		"A /dev/random":  true,
    71  		"A /dev/stdout":  true,
    72  		"A /dev/stderr":  true,
    73  		"A /dev/tty1":    true,
    74  		"A /dev/stdin":   true,
    75  		"A /dev/tty":     true,
    76  		"A /dev/urandom": true,
    77  		"A /dev/zero":    true,
    78  	}
    79  
    80  	for _, line := range strings.Split(out, "\n") {
    81  		if line != "" && !expected[line] {
    82  			c.Errorf("%q is shown in the diff but shouldn't", line)
    83  		}
    84  	}
    85  }
    86  
    87  // https://github.com/docker/docker/pull/14381#discussion_r33859347
    88  func (s *DockerSuite) TestDiffEmptyArgClientError(c *check.C) {
    89  	out, _, err := dockerCmdWithError("diff", "")
    90  	c.Assert(err, check.NotNil)
    91  	c.Assert(strings.TrimSpace(out), check.Equals, "Container name cannot be empty")
    92  }