98 lines
3 KiB
Go
98 lines
3 KiB
Go
package main
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import (
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"strings"
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"time"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/docker/docker/integration-cli/cli"
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"github.com/go-check/check"
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)
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// ensure that an added file shows up in docker diff
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func (s *DockerSuite) TestDiffFilenameShownInOutput(c *check.C) {
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containerCmd := `mkdir /foo; echo xyzzy > /foo/bar`
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out := cli.DockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd).Combined()
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// Wait for it to exit as cannot diff a running container on Windows, and
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// it will take a few seconds to exit. Also there's no way in Windows to
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// differentiate between an Add or a Modify, and all files are under
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// a "Files/" prefix.
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containerID := strings.TrimSpace(out)
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lookingFor := "A /foo/bar"
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if testEnv.OSType == "windows" {
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cli.WaitExited(c, containerID, 60*time.Second)
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lookingFor = "C Files/foo/bar"
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}
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cleanCID := strings.TrimSpace(out)
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out = cli.DockerCmd(c, "diff", cleanCID).Combined()
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found := false
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for _, line := range strings.Split(out, "\n") {
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if strings.Contains(line, lookingFor) {
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found = true
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break
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}
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}
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c.Assert(found, checker.True)
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}
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// test to ensure GH #3840 doesn't occur any more
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func (s *DockerSuite) TestDiffEnsureInitLayerFilesAreIgnored(c *check.C) {
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testRequires(c, DaemonIsLinux)
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// this is a list of files which shouldn't show up in `docker diff`
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initLayerFiles := []string{"/etc/resolv.conf", "/etc/hostname", "/etc/hosts", "/.dockerenv"}
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containerCount := 5
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// we might not run into this problem from the first run, so start a few containers
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for i := 0; i < containerCount; i++ {
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containerCmd := `echo foo > /root/bar`
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sh", "-c", containerCmd)
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cleanCID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "diff", cleanCID)
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for _, filename := range initLayerFiles {
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c.Assert(out, checker.Not(checker.Contains), filename)
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}
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}
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}
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func (s *DockerSuite) TestDiffEnsureDefaultDevs(c *check.C) {
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testRequires(c, DaemonIsLinux)
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out, _ := dockerCmd(c, "run", "-d", "busybox", "sleep", "0")
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cleanCID := strings.TrimSpace(out)
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out, _ = dockerCmd(c, "diff", cleanCID)
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expected := map[string]bool{
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"C /dev": true,
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"A /dev/full": true, // busybox
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"C /dev/ptmx": true, // libcontainer
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"A /dev/mqueue": true,
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"A /dev/kmsg": true,
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"A /dev/fd": true,
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"A /dev/ptmx": true,
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"A /dev/null": true,
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"A /dev/random": true,
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"A /dev/stdout": true,
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"A /dev/stderr": true,
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"A /dev/tty1": true,
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"A /dev/stdin": true,
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"A /dev/tty": true,
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"A /dev/urandom": true,
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"A /dev/zero": true,
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}
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for _, line := range strings.Split(out, "\n") {
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c.Assert(line == "" || expected[line], checker.True, check.Commentf(line))
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}
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}
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// https://github.com/docker/docker/pull/14381#discussion_r33859347
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func (s *DockerSuite) TestDiffEmptyArgClientError(c *check.C) {
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out, _, err := dockerCmdWithError("diff", "")
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c.Assert(err, checker.NotNil)
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c.Assert(strings.TrimSpace(out), checker.Contains, "Container name cannot be empty")
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}
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