github.com/carlanton/docker@v1.8.0-rc1/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  	containerCmd := `echo foo > /root/bar`
    12  	out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
    13  
    14  	cleanCID := strings.TrimSpace(out)
    15  	out, _ = dockerCmd(c, "diff", cleanCID)
    16  
    17  	found := false
    18  	for _, line := range strings.Split(out, "\n") {
    19  		if strings.Contains("A /root/bar", line) {
    20  			found = true
    21  			break
    22  		}
    23  	}
    24  	if !found {
    25  		c.Errorf("couldn't find the new file in docker diff's output: %v", out)
    26  	}
    27  }
    28  
    29  // test to ensure GH #3840 doesn't occur any more
    30  func (s *DockerSuite) TestDiffEnsureDockerinitFilesAreIgnored(c *check.C) {
    31  	// this is a list of files which shouldn't show up in `docker diff`
    32  	dockerinitFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerinit", "/.dockerenv"}
    33  	containerCount := 5
    34  
    35  	// we might not run into this problem from the first run, so start a few containers
    36  	for i := 0; i < containerCount; i++ {
    37  		containerCmd := `echo foo > /root/bar`
    38  		out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
    39  
    40  		cleanCID := strings.TrimSpace(out)
    41  		out, _ = dockerCmd(c, "diff", cleanCID)
    42  
    43  		for _, filename := range dockerinitFiles {
    44  			if strings.Contains(out, filename) {
    45  				c.Errorf("found file which should've been ignored %v in diff output", filename)
    46  			}
    47  		}
    48  	}
    49  }
    50  
    51  func (s *DockerSuite) TestDiffEnsureOnlyKmsgAndPtmx(c *check.C) {
    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/kmsg":    true, // lxc
    62  		"A /dev/fd":      true,
    63  		"A /dev/fuse":    true,
    64  		"A /dev/ptmx":    true,
    65  		"A /dev/null":    true,
    66  		"A /dev/random":  true,
    67  		"A /dev/stdout":  true,
    68  		"A /dev/stderr":  true,
    69  		"A /dev/tty1":    true,
    70  		"A /dev/stdin":   true,
    71  		"A /dev/tty":     true,
    72  		"A /dev/urandom": true,
    73  		"A /dev/zero":    true,
    74  	}
    75  
    76  	for _, line := range strings.Split(out, "\n") {
    77  		if line != "" && !expected[line] {
    78  			c.Errorf("%q is shown in the diff but shouldn't", line)
    79  		}
    80  	}
    81  }
    82  
    83  // https://github.com/docker/docker/pull/14381#discussion_r33859347
    84  func (s *DockerSuite) TestDiffEmptyArgClientError(c *check.C) {
    85  	out, _, err := dockerCmdWithError(c, "diff", "")
    86  	c.Assert(err, check.NotNil)
    87  	c.Assert(strings.TrimSpace(out), check.Equals, "Container name cannot be empty")
    88  }