| package main |
| |
| import ( |
| "os/exec" |
| "strings" |
| |
| "github.com/go-check/check" |
| ) |
| |
| // ensure that an added file shows up in docker diff |
| func (s *DockerSuite) TestDiffFilenameShownInOutput(c *check.C) { |
| containerCmd := `echo foo > /root/bar` |
| runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", containerCmd) |
| out, _, err := runCommandWithOutput(runCmd) |
| if err != nil { |
| c.Fatalf("failed to start the container: %s, %v", out, err) |
| } |
| |
| cleanCID := strings.TrimSpace(out) |
| |
| diffCmd := exec.Command(dockerBinary, "diff", cleanCID) |
| out, _, err = runCommandWithOutput(diffCmd) |
| if err != nil { |
| c.Fatalf("failed to run diff: %s %v", out, err) |
| } |
| |
| found := false |
| for _, line := range strings.Split(out, "\n") { |
| if strings.Contains("A /root/bar", line) { |
| found = true |
| break |
| } |
| } |
| if !found { |
| c.Errorf("couldn't find the new file in docker diff's output: %v", out) |
| } |
| } |
| |
| // test to ensure GH #3840 doesn't occur any more |
| func (s *DockerSuite) TestDiffEnsureDockerinitFilesAreIgnored(c *check.C) { |
| // this is a list of files which shouldn't show up in `docker diff` |
| dockerinitFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerinit", "/.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` |
| runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sh", "-c", containerCmd) |
| out, _, err := runCommandWithOutput(runCmd) |
| |
| if err != nil { |
| c.Fatal(out, err) |
| } |
| |
| cleanCID := strings.TrimSpace(out) |
| |
| diffCmd := exec.Command(dockerBinary, "diff", cleanCID) |
| out, _, err = runCommandWithOutput(diffCmd) |
| if err != nil { |
| c.Fatalf("failed to run diff: %s, %v", out, err) |
| } |
| |
| for _, filename := range dockerinitFiles { |
| if strings.Contains(out, filename) { |
| c.Errorf("found file which should've been ignored %v in diff output", filename) |
| } |
| } |
| } |
| } |
| |
| func (s *DockerSuite) TestDiffEnsureOnlyKmsgAndPtmx(c *check.C) { |
| runCmd := exec.Command(dockerBinary, "run", "-d", "busybox", "sleep", "0") |
| out, _, err := runCommandWithOutput(runCmd) |
| if err != nil { |
| c.Fatal(out, err) |
| } |
| |
| cleanCID := strings.TrimSpace(out) |
| |
| diffCmd := exec.Command(dockerBinary, "diff", cleanCID) |
| out, _, err = runCommandWithOutput(diffCmd) |
| if err != nil { |
| c.Fatalf("failed to run diff: %s, %v", out, err) |
| } |
| |
| expected := map[string]bool{ |
| "C /dev": true, |
| "A /dev/full": true, // busybox |
| "C /dev/ptmx": true, // libcontainer |
| "A /dev/kmsg": true, // lxc |
| "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") { |
| if line != "" && !expected[line] { |
| c.Errorf("%q is shown in the diff but shouldn't", line) |
| } |
| } |
| } |