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https://github.com/moby/moby.git
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259cadb0b1
Update help line to allow 90 characters instead of 80 The trust flag pushes out the help description column wider, requiring more room to display help messages. Signed-off-by: Derek McGowan <derek@mcgstyle.net> (github: dmcgowan)
341 lines
12 KiB
Go
341 lines
12 KiB
Go
package main
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import (
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"os"
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"os/exec"
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"runtime"
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"strings"
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"unicode"
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"github.com/docker/docker/pkg/homedir"
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"github.com/go-check/check"
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)
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func (s *DockerSuite) TestHelpTextVerify(c *check.C) {
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// Make sure main help text fits within 80 chars and that
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// on non-windows system we use ~ when possible (to shorten things).
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// Test for HOME set to its default value and set to "/" on linux
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// Yes on windows setting up an array and looping (right now) isn't
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// necessary because we just have one value, but we'll need the
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// array/loop on linux so we might as well set it up so that we can
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// test any number of home dirs later on and all we need to do is
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// modify the array - the rest of the testing infrastructure should work
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homes := []string{homedir.Get()}
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// Non-Windows machines need to test for this special case of $HOME
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if runtime.GOOS != "windows" {
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homes = append(homes, "/")
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}
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homeKey := homedir.Key()
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baseEnvs := os.Environ()
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// Remove HOME env var from list so we can add a new value later.
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for i, env := range baseEnvs {
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if strings.HasPrefix(env, homeKey+"=") {
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baseEnvs = append(baseEnvs[:i], baseEnvs[i+1:]...)
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break
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}
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}
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for _, home := range homes {
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// Dup baseEnvs and add our new HOME value
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newEnvs := make([]string, len(baseEnvs)+1)
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copy(newEnvs, baseEnvs)
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newEnvs[len(newEnvs)-1] = homeKey + "=" + home
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scanForHome := runtime.GOOS != "windows" && home != "/"
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// Check main help text to make sure its not over 80 chars
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helpCmd := exec.Command(dockerBinary, "help")
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helpCmd.Env = newEnvs
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out, ec, err := runCommandWithOutput(helpCmd)
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if err != nil || ec != 0 {
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c.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
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}
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lines := strings.Split(out, "\n")
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for _, line := range lines {
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if len(line) > 80 {
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c.Fatalf("Line is too long(%d chars):\n%s", len(line), line)
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}
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// All lines should not end with a space
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if strings.HasSuffix(line, " ") {
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c.Fatalf("Line should not end with a space: %s", line)
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}
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if scanForHome && strings.Contains(line, `=`+home) {
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c.Fatalf("Line should use '%q' instead of %q:\n%s", homedir.GetShortcutString(), home, line)
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}
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if runtime.GOOS != "windows" {
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i := strings.Index(line, homedir.GetShortcutString())
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if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
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c.Fatalf("Main help should not have used home shortcut:\n%s", line)
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}
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}
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}
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// Make sure each cmd's help text fits within 80 chars and that
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// on non-windows system we use ~ when possible (to shorten things).
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// Pull the list of commands from the "Commands:" section of docker help
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helpCmd = exec.Command(dockerBinary, "help")
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helpCmd.Env = newEnvs
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out, ec, err = runCommandWithOutput(helpCmd)
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if err != nil || ec != 0 {
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c.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
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}
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i := strings.Index(out, "Commands:")
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if i < 0 {
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c.Fatalf("Missing 'Commands:' in:\n%s", out)
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}
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cmds := []string{}
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// Grab all chars starting at "Commands:"
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helpOut := strings.Split(out[i:], "\n")
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// First line is just "Commands:"
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if isLocalDaemon {
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// Replace first line with "daemon" command since it's not part of the list of commands.
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helpOut[0] = " daemon"
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} else {
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// Skip first line
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helpOut = helpOut[1:]
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}
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for _, cmd := range helpOut {
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var stderr string
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// Stop on blank line or non-idented line
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if cmd == "" || !unicode.IsSpace(rune(cmd[0])) {
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break
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}
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// Grab just the first word of each line
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cmd = strings.Split(strings.TrimSpace(cmd), " ")[0]
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cmds = append(cmds, cmd)
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// Check the full usage text
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helpCmd := exec.Command(dockerBinary, cmd, "--help")
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helpCmd.Env = newEnvs
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out, stderr, ec, err = runCommandWithStdoutStderr(helpCmd)
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if len(stderr) != 0 {
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c.Fatalf("Error on %q help. non-empty stderr:%q", cmd, stderr)
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}
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if strings.HasSuffix(out, "\n\n") {
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c.Fatalf("Should not have blank line on %q\nout:%q", cmd, out)
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}
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if !strings.Contains(out, "--help=false") {
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c.Fatalf("Should show full usage on %q\nout:%q", cmd, out)
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}
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if err != nil || ec != 0 {
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c.Fatalf("Error on %q help: %s\nexit code:%d", cmd, out, ec)
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}
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// Check each line for lots of stuff
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lines := strings.Split(out, "\n")
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for _, line := range lines {
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if len(line) > 90 {
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c.Fatalf("Help for %q is too long(%d chars):\n%s", cmd,
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len(line), line)
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}
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if scanForHome && strings.Contains(line, `"`+home) {
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c.Fatalf("Help for %q should use ~ instead of %q on:\n%s",
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cmd, home, line)
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}
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i := strings.Index(line, "~")
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if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
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c.Fatalf("Help for %q should not have used ~:\n%s", cmd, line)
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}
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// If a line starts with 4 spaces then assume someone
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// added a multi-line description for an option and we need
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// to flag it
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if strings.HasPrefix(line, " ") {
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c.Fatalf("Help for %q should not have a multi-line option: %s", cmd, line)
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}
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// Options should NOT end with a period
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if strings.HasPrefix(line, " -") && strings.HasSuffix(line, ".") {
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c.Fatalf("Help for %q should not end with a period: %s", cmd, line)
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}
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// Options should NOT end with a space
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if strings.HasSuffix(line, " ") {
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c.Fatalf("Help for %q should not end with a space: %s", cmd, line)
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}
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}
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// For each command make sure we generate an error
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// if we give a bad arg
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dCmd := exec.Command(dockerBinary, cmd, "--badArg")
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out, stderr, ec, err = runCommandWithStdoutStderr(dCmd)
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if len(out) != 0 || len(stderr) == 0 || ec == 0 || err == nil {
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c.Fatalf("Bad results from 'docker %s --badArg'\nec:%d\nstdout:%s\nstderr:%s\nerr:%q", cmd, ec, out, stderr, err)
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}
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// Be really picky
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if strings.HasSuffix(stderr, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker rm'\n%s", stderr)
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}
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// Now make sure that each command will print a short-usage
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// (not a full usage - meaning no opts section) if we
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// are missing a required arg or pass in a bad arg
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// These commands will never print a short-usage so don't test
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noShortUsage := map[string]string{
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"images": "",
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"login": "",
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"logout": "",
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}
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if _, ok := noShortUsage[cmd]; !ok {
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// For each command run it w/o any args. It will either return
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// valid output or print a short-usage
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var dCmd *exec.Cmd
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var stdout, stderr string
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var args []string
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// skipNoArgs are ones that we don't want to try w/o
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// any args. Either because it'll hang the test or
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// lead to incorrect test result (like false negative).
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// Whatever the reason, skip trying to run w/o args and
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// jump to trying with a bogus arg.
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skipNoArgs := map[string]struct{}{
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"daemon": {},
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"events": {},
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"load": {},
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}
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ec = 0
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if _, ok := skipNoArgs[cmd]; !ok {
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args = []string{cmd}
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dCmd = exec.Command(dockerBinary, args...)
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stdout, stderr, ec, err = runCommandWithStdoutStderr(dCmd)
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}
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// If its ok w/o any args then try again with an arg
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if ec == 0 {
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args = []string{cmd, "badArg"}
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dCmd = exec.Command(dockerBinary, args...)
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stdout, stderr, ec, err = runCommandWithStdoutStderr(dCmd)
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}
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if len(stdout) != 0 || len(stderr) == 0 || ec == 0 || err == nil {
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c.Fatalf("Bad output from %q\nstdout:%q\nstderr:%q\nec:%d\nerr:%q", args, stdout, stderr, ec, err)
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}
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// Should have just short usage
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if !strings.Contains(stderr, "\nUsage:\t") {
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c.Fatalf("Missing short usage on %q\nstderr:%q", args, stderr)
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}
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// But shouldn't have full usage
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if strings.Contains(stderr, "--help=false") {
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c.Fatalf("Should not have full usage on %q\nstderr:%q", args, stderr)
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}
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if strings.HasSuffix(stderr, "\n\n") {
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c.Fatalf("Should not have a blank line on %q\nstderr:%q", args, stderr)
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}
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}
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}
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expected := 39
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if isLocalDaemon {
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expected++ // for the daemon command
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}
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if len(cmds) != expected {
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c.Fatalf("Wrong # of cmds(%d), it should be: %d\nThe list:\n%q",
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len(cmds), expected, cmds)
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}
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}
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}
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func (s *DockerSuite) TestHelpExitCodesHelpOutput(c *check.C) {
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// Test to make sure the exit code and output (stdout vs stderr) of
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// various good and bad cases are what we expect
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// docker : stdout=all, stderr=empty, rc=0
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cmd := exec.Command(dockerBinary)
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stdout, stderr, ec, err := runCommandWithStdoutStderr(cmd)
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if len(stdout) == 0 || len(stderr) != 0 || ec != 0 || err != nil {
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c.Fatalf("Bad results from 'docker'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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// Be really pick
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if strings.HasSuffix(stdout, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker'\n%s", stdout)
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}
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// docker help: stdout=all, stderr=empty, rc=0
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cmd = exec.Command(dockerBinary, "help")
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stdout, stderr, ec, err = runCommandWithStdoutStderr(cmd)
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if len(stdout) == 0 || len(stderr) != 0 || ec != 0 || err != nil {
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c.Fatalf("Bad results from 'docker help'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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// Be really pick
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if strings.HasSuffix(stdout, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker help'\n%s", stdout)
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}
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// docker --help: stdout=all, stderr=empty, rc=0
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cmd = exec.Command(dockerBinary, "--help")
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stdout, stderr, ec, err = runCommandWithStdoutStderr(cmd)
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if len(stdout) == 0 || len(stderr) != 0 || ec != 0 || err != nil {
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c.Fatalf("Bad results from 'docker --help'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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// Be really pick
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if strings.HasSuffix(stdout, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker --help'\n%s", stdout)
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}
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// docker inspect busybox: stdout=all, stderr=empty, rc=0
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// Just making sure stderr is empty on valid cmd
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cmd = exec.Command(dockerBinary, "inspect", "busybox")
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stdout, stderr, ec, err = runCommandWithStdoutStderr(cmd)
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if len(stdout) == 0 || len(stderr) != 0 || ec != 0 || err != nil {
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c.Fatalf("Bad results from 'docker inspect busybox'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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// Be really pick
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if strings.HasSuffix(stdout, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker inspect busyBox'\n%s", stdout)
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}
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// docker rm: stdout=empty, stderr=all, rc!=0
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// testing the min arg error msg
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cmd = exec.Command(dockerBinary, "rm")
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stdout, stderr, ec, err = runCommandWithStdoutStderr(cmd)
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if len(stdout) != 0 || len(stderr) == 0 || ec == 0 || err == nil {
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c.Fatalf("Bad results from 'docker rm'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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// Should not contain full help text but should contain info about
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// # of args and Usage line
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if !strings.Contains(stderr, "requires a minimum") {
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c.Fatalf("Missing # of args text from 'docker rm'\nstderr:%s", stderr)
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}
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// docker rm NoSuchContainer: stdout=empty, stderr=all, rc=0
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// testing to make sure no blank line on error
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cmd = exec.Command(dockerBinary, "rm", "NoSuchContainer")
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stdout, stderr, ec, err = runCommandWithStdoutStderr(cmd)
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if len(stdout) != 0 || len(stderr) == 0 || ec == 0 || err == nil {
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c.Fatalf("Bad results from 'docker rm NoSuchContainer'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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// Be really picky
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if strings.HasSuffix(stderr, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker rm'\n%s", stderr)
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}
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// docker BadCmd: stdout=empty, stderr=all, rc=0
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cmd = exec.Command(dockerBinary, "BadCmd")
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stdout, stderr, ec, err = runCommandWithStdoutStderr(cmd)
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if len(stdout) != 0 || len(stderr) == 0 || ec == 0 || err == nil {
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c.Fatalf("Bad results from 'docker BadCmd'\nec:%d\nstdout:%s\nstderr:%s\nerr:%v", ec, stdout, stderr, err)
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}
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if stderr != "docker: 'BadCmd' is not a docker command.\nSee 'docker --help'.\n" {
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c.Fatalf("Unexcepted output for 'docker badCmd'\nstderr:%s", stderr)
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}
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// Be really picky
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if strings.HasSuffix(stderr, "\n\n") {
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c.Fatalf("Should not have a blank line at the end of 'docker rm'\n%s", stderr)
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}
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}
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