package main import ( "strings" "github.com/docker/docker/pkg/integration/checker" "github.com/go-check/check" ) // ensure that an added file shows up in docker diff func (s *DockerSuite) TestDiffFilenameShownInOutput(c *check.C) { testRequires(c, DaemonIsLinux) containerCmd := `echo foo > /root/bar` out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd) cleanCID := strings.TrimSpace(out) out, _ = dockerCmd(c, "diff", cleanCID) found := false for _, line := range strings.Split(out, "\n") { if strings.Contains("A /root/bar", line) { found = true break } } c.Assert(found, checker.True) } // test to ensure GH #3840 doesn't occur any more func (s *DockerSuite) TestDiffEnsureInitLayerFilesAreIgnored(c *check.C) { testRequires(c, DaemonIsLinux) // this is a list of files which shouldn't show up in `docker diff` initLayerFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerenv"} containerCount := 5 // we might not run into this problem from the first run, so start a few containers for i := 0; i < containerCount; i++ { containerCmd := `echo foo > /root/bar` out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd) cleanCID := strings.TrimSpace(out) out, _ = dockerCmd(c, "diff", cleanCID) for _, filename := range initLayerFiles { c.Assert(out, checker.Not(checker.Contains), filename) } } } func (s *DockerSuite) TestDiffEnsureDefaultDevs(c *check.C) { testRequires(c, DaemonIsLinux) out, _ := dockerCmd(c, "run", "-d", "busybox", "sleep", "0") cleanCID := strings.TrimSpace(out) out, _ = dockerCmd(c, "diff", cleanCID) expected := map[string]bool{ "C /dev": true, "A /dev/full": true, // busybox "C /dev/ptmx": true, // libcontainer "A /dev/mqueue": true, "A /dev/kmsg": true, "A /dev/fd": true, "A /dev/fuse": true, "A /dev/ptmx": true, "A /dev/null": true, "A /dev/random": true, "A /dev/stdout": true, "A /dev/stderr": true, "A /dev/tty1": true, "A /dev/stdin": true, "A /dev/tty": true, "A /dev/urandom": true, "A /dev/zero": true, } for _, line := range strings.Split(out, "\n") { c.Assert(line == "" || expected[line], checker.True, check.Commentf(line)) } } // https://github.com/docker/docker/pull/14381#discussion_r33859347 func (s *DockerSuite) TestDiffEmptyArgClientError(c *check.C) { out, _, err := dockerCmdWithError("diff", "") c.Assert(err, checker.NotNil) c.Assert(strings.TrimSpace(out), checker.Contains, "Container name cannot be empty") }