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moby--moby/integration-cli/docker_cli_diff_test.go
Justin Cormack 39ecc08f32 Do not create /dev/fuse by default
This device is not required by the OCI spec.

The rationale for this was linked to docker/docker#2393

So a non functional /dev/fuse was created, and actual fuse use still is
required to add the device explicitly. However even old versions of the JVM
on Ubuntu 12.04 no longer require the fuse package, and this is all not
needed.

See also https://github.com/opencontainers/runc/pull/983 although this
change alone stops the fuse device being created.

Tested and does not change actual ability to use fuse.

Signed-off-by: Justin Cormack <justin.cormack@docker.com>
2016-08-12 12:33:42 +01:00

86 lines
2.5 KiB
Go

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/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")
}