github.com/duglin/docker@v1.13.1/integration-cli/docker_cli_diff_test.go (about) 1 package main 2 3 import ( 4 "strings" 5 "time" 6 7 "github.com/docker/docker/pkg/integration/checker" 8 "github.com/go-check/check" 9 ) 10 11 // ensure that an added file shows up in docker diff 12 func (s *DockerSuite) TestDiffFilenameShownInOutput(c *check.C) { 13 containerCmd := `mkdir /foo; echo xyzzy > /foo/bar` 14 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd) 15 16 // Wait for it to exit as cannot diff a running container on Windows, and 17 // it will take a few seconds to exit. Also there's no way in Windows to 18 // differentiate between an Add or a Modify, and all files are under 19 // a "Files/" prefix. 20 containerID := strings.TrimSpace(out) 21 lookingFor := "A /foo/bar" 22 if daemonPlatform == "windows" { 23 err := waitExited(containerID, 60*time.Second) 24 c.Assert(err, check.IsNil) 25 lookingFor = "C Files/foo/bar" 26 } 27 28 cleanCID := strings.TrimSpace(out) 29 out, _ = dockerCmd(c, "diff", cleanCID) 30 31 found := false 32 for _, line := range strings.Split(out, "\n") { 33 if strings.Contains(line, lookingFor) { 34 found = true 35 break 36 } 37 } 38 c.Assert(found, checker.True) 39 } 40 41 // test to ensure GH #3840 doesn't occur any more 42 func (s *DockerSuite) TestDiffEnsureInitLayerFilesAreIgnored(c *check.C) { 43 testRequires(c, DaemonIsLinux) 44 // this is a list of files which shouldn't show up in `docker diff` 45 initLayerFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerenv"} 46 containerCount := 5 47 48 // we might not run into this problem from the first run, so start a few containers 49 for i := 0; i < containerCount; i++ { 50 containerCmd := `echo foo > /root/bar` 51 out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd) 52 53 cleanCID := strings.TrimSpace(out) 54 out, _ = dockerCmd(c, "diff", cleanCID) 55 56 for _, filename := range initLayerFiles { 57 c.Assert(out, checker.Not(checker.Contains), filename) 58 } 59 } 60 } 61 62 func (s *DockerSuite) TestDiffEnsureDefaultDevs(c *check.C) { 63 testRequires(c, DaemonIsLinux) 64 out, _ := dockerCmd(c, "run", "-d", "busybox", "sleep", "0") 65 66 cleanCID := strings.TrimSpace(out) 67 out, _ = dockerCmd(c, "diff", cleanCID) 68 69 expected := map[string]bool{ 70 "C /dev": true, 71 "A /dev/full": true, // busybox 72 "C /dev/ptmx": true, // libcontainer 73 "A /dev/mqueue": true, 74 "A /dev/kmsg": true, 75 "A /dev/fd": true, 76 "A /dev/ptmx": true, 77 "A /dev/null": true, 78 "A /dev/random": true, 79 "A /dev/stdout": true, 80 "A /dev/stderr": true, 81 "A /dev/tty1": true, 82 "A /dev/stdin": true, 83 "A /dev/tty": true, 84 "A /dev/urandom": true, 85 "A /dev/zero": true, 86 } 87 88 for _, line := range strings.Split(out, "\n") { 89 c.Assert(line == "" || expected[line], checker.True, check.Commentf(line)) 90 } 91 } 92 93 // https://github.com/docker/docker/pull/14381#discussion_r33859347 94 func (s *DockerSuite) TestDiffEmptyArgClientError(c *check.C) { 95 out, _, err := dockerCmdWithError("diff", "") 96 c.Assert(err, checker.NotNil) 97 c.Assert(strings.TrimSpace(out), checker.Contains, "Container name cannot be empty") 98 }