package main import ( "fmt" "os/exec" "runtime" "strings" "unicode" "github.com/docker/docker/pkg/homedir" "github.com/docker/docker/pkg/integration/checker" "github.com/go-check/check" ) func (s *DockerSuite) TestHelpTextVerify(c *check.C) { testRequires(c, DaemonIsLinux) // Make sure main help text fits within 80 chars and that // on non-windows system we use ~ when possible (to shorten things). // Test for HOME set to its default value and set to "/" on linux // Yes on windows setting up an array and looping (right now) isn't // necessary because we just have one value, but we'll need the // array/loop on linux so we might as well set it up so that we can // test any number of home dirs later on and all we need to do is // modify the array - the rest of the testing infrastructure should work homes := []string{homedir.Get()} // Non-Windows machines need to test for this special case of $HOME if runtime.GOOS != "windows" { homes = append(homes, "/") } homeKey := homedir.Key() baseEnvs := appendBaseEnv(true) // Remove HOME env var from list so we can add a new value later. for i, env := range baseEnvs { if strings.HasPrefix(env, homeKey+"=") { baseEnvs = append(baseEnvs[:i], baseEnvs[i+1:]...) break } } for _, home := range homes { // Dup baseEnvs and add our new HOME value newEnvs := make([]string, len(baseEnvs)+1) copy(newEnvs, baseEnvs) newEnvs[len(newEnvs)-1] = homeKey + "=" + home scanForHome := runtime.GOOS != "windows" && home != "/" // Check main help text to make sure its not over 80 chars helpCmd := exec.Command(dockerBinary, "help") helpCmd.Env = newEnvs out, _, err := runCommandWithOutput(helpCmd) c.Assert(err, checker.IsNil, check.Commentf(out)) lines := strings.Split(out, "\n") foundTooLongLine := false for _, line := range lines { if !foundTooLongLine && len(line) > 80 { c.Logf("Line is too long:\n%s", line) foundTooLongLine = true } // All lines should not end with a space c.Assert(line, checker.Not(checker.HasSuffix), " ", check.Commentf("Line should not end with a space")) if scanForHome && strings.Contains(line, `=`+home) { c.Fatalf("Line should use '%q' instead of %q:\n%s", homedir.GetShortcutString(), home, line) } if runtime.GOOS != "windows" { i := strings.Index(line, homedir.GetShortcutString()) if i >= 0 && i != len(line)-1 && line[i+1] != '/' { c.Fatalf("Main help should not have used home shortcut:\n%s", line) } } } // Make sure each cmd's help text fits within 90 chars and that // on non-windows system we use ~ when possible (to shorten things). // Pull the list of commands from the "Commands:" section of docker help helpCmd = exec.Command(dockerBinary, "help") helpCmd.Env = newEnvs out, _, err = runCommandWithOutput(helpCmd) c.Assert(err, checker.IsNil, check.Commentf(out)) i := strings.Index(out, "Commands:") c.Assert(i, checker.GreaterOrEqualThan, 0, check.Commentf("Missing 'Commands:' in:\n%s", out)) cmds := []string{} // Grab all chars starting at "Commands:" helpOut := strings.Split(out[i:], "\n") // First line is just "Commands:" if isLocalDaemon { // Replace first line with "daemon" command since it's not part of the list of commands. helpOut[0] = " daemon" } else { // Skip first line helpOut = helpOut[1:] } // Create the list of commands we want to test cmdsToTest := []string{} for _, cmd := range helpOut { // Stop on blank line or non-idented line if cmd == "" || !unicode.IsSpace(rune(cmd[0])) { break } // Grab just the first word of each line cmd = strings.Split(strings.TrimSpace(cmd), " ")[0] cmds = append(cmds, cmd) // Saving count for later cmdsToTest = append(cmdsToTest, cmd) } // Add some 'two word' commands - would be nice to automatically // calculate this list - somehow cmdsToTest = append(cmdsToTest, "volume create") cmdsToTest = append(cmdsToTest, "volume inspect") cmdsToTest = append(cmdsToTest, "volume ls") cmdsToTest = append(cmdsToTest, "volume rm") // Divide the list of commands into go routines and run the func testcommand on the commands in parallel // to save runtime of test errChan := make(chan error) for index := 0; index < len(cmdsToTest); index++ { go func(index int) { errChan <- testCommand(cmdsToTest[index], newEnvs, scanForHome, home) }(index) } for index := 0; index < len(cmdsToTest); index++ { err := <-errChan if err != nil { c.Fatal(err) } } // Number of commands for standard release and experimental release standard := 41 experimental := 1 expected := standard + experimental if isLocalDaemon { expected++ // for the daemon command } c.Assert(len(cmds), checker.LessOrEqualThan, expected, check.Commentf("Wrong # of cmds, it should be: %d\nThe list:\n%q", expected, cmds)) } } func (s *DockerSuite) TestHelpExitCodesHelpOutput(c *check.C) { testRequires(c, DaemonIsLinux) // Test to make sure the exit code and output (stdout vs stderr) of // various good and bad cases are what we expect // docker : stdout=all, stderr=empty, rc=0 out, _, err := dockerCmdWithError() c.Assert(err, checker.IsNil, check.Commentf(out)) // Be really pick c.Assert(out, checker.Not(checker.HasSuffix), "\n\n", check.Commentf("Should not have a blank line at the end of 'docker'\n")) // docker help: stdout=all, stderr=empty, rc=0 out, _, err = dockerCmdWithError("help") c.Assert(err, checker.IsNil, check.Commentf(out)) // Be really pick c.Assert(out, checker.Not(checker.HasSuffix), "\n\n", check.Commentf("Should not have a blank line at the end of 'docker help'\n")) // docker --help: stdout=all, stderr=empty, rc=0 out, _, err = dockerCmdWithError("--help") c.Assert(err, checker.IsNil, check.Commentf(out)) // Be really pick c.Assert(out, checker.Not(checker.HasSuffix), "\n\n", check.Commentf("Should not have a blank line at the end of 'docker --help'\n")) // docker inspect busybox: stdout=all, stderr=empty, rc=0 // Just making sure stderr is empty on valid cmd out, _, err = dockerCmdWithError("inspect", "busybox") c.Assert(err, checker.IsNil, check.Commentf(out)) // Be really pick c.Assert(out, checker.Not(checker.HasSuffix), "\n\n", check.Commentf("Should not have a blank line at the end of 'docker inspect busyBox'\n")) // docker rm: stdout=empty, stderr=all, rc!=0 // testing the min arg error msg cmd := exec.Command(dockerBinary, "rm") stdout, stderr, _, err := runCommandWithStdoutStderr(cmd) c.Assert(err, checker.NotNil) c.Assert(stdout, checker.Equals, "") // Should not contain full help text but should contain info about // # of args and Usage line c.Assert(stderr, checker.Contains, "requires a minimum", check.Commentf("Missing # of args text from 'docker rm'\n")) // docker rm NoSuchContainer: stdout=empty, stderr=all, rc=0 // testing to make sure no blank line on error cmd = exec.Command(dockerBinary, "rm", "NoSuchContainer") stdout, stderr, _, err = runCommandWithStdoutStderr(cmd) c.Assert(err, checker.NotNil) c.Assert(len(stderr), checker.Not(checker.Equals), 0) c.Assert(stdout, checker.Equals, "") // Be really picky c.Assert(stderr, checker.Not(checker.HasSuffix), "\n\n", check.Commentf("Should not have a blank line at the end of 'docker rm'\n")) // docker BadCmd: stdout=empty, stderr=all, rc=0 cmd = exec.Command(dockerBinary, "BadCmd") stdout, stderr, _, err = runCommandWithStdoutStderr(cmd) c.Assert(err, checker.NotNil) c.Assert(stdout, checker.Equals, "") c.Assert(stderr, checker.Equals, "docker: 'BadCmd' is not a docker command.\nSee 'docker --help'.\n", check.Commentf("Unexcepted output for 'docker badCmd'\n")) } func testCommand(cmd string, newEnvs []string, scanForHome bool, home string) error { args := strings.Split(cmd+" --help", " ") // Check the full usage text helpCmd := exec.Command(dockerBinary, args...) helpCmd.Env = newEnvs out, stderr, _, err := runCommandWithStdoutStderr(helpCmd) if len(stderr) != 0 { return fmt.Errorf("Error on %q help. non-empty stderr:%q\n", cmd, stderr) } if strings.HasSuffix(out, "\n\n") { return fmt.Errorf("Should not have blank line on %q\n", cmd) } if !strings.Contains(out, "--help") { return fmt.Errorf("All commands should mention '--help'. Command '%v' did not.\n", cmd) } if err != nil { return fmt.Errorf(out) } // Check each line for lots of stuff lines := strings.Split(out, "\n") for _, line := range lines { if len(line) > 107 { return fmt.Errorf("Help for %q is too long:\n%s\n", cmd, line) } if scanForHome && strings.Contains(line, `"`+home) { return fmt.Errorf("Help for %q should use ~ instead of %q on:\n%s\n", cmd, home, line) } i := strings.Index(line, "~") if i >= 0 && i != len(line)-1 && line[i+1] != '/' { return fmt.Errorf("Help for %q should not have used ~:\n%s", cmd, line) } // If a line starts with 4 spaces then assume someone // added a multi-line description for an option and we need // to flag it if strings.HasPrefix(line, " ") { return fmt.Errorf("Help for %q should not have a multi-line option", cmd) } // Options should NOT end with a period if strings.HasPrefix(line, " -") && strings.HasSuffix(line, ".") { return fmt.Errorf("Help for %q should not end with a period: %s", cmd, line) } // Options should NOT end with a space if strings.HasSuffix(line, " ") { return fmt.Errorf("Help for %q should not end with a space", cmd) } } // For each command make sure we generate an error // if we give a bad arg args = strings.Split(cmd+" --badArg", " ") out, _, err = dockerCmdWithError(args...) if err == nil { return fmt.Errorf(out) } // Be really picky if strings.HasSuffix(stderr, "\n\n") { return fmt.Errorf("Should not have a blank line at the end of 'docker rm'\n") } // Now make sure that each command will print a short-usage // (not a full usage - meaning no opts section) if we // are missing a required arg or pass in a bad arg // These commands will never print a short-usage so don't test noShortUsage := map[string]string{ "images": "", "login": "", "logout": "", "network": "", "stats": "", } if _, ok := noShortUsage[cmd]; !ok { // For each command run it w/o any args. It will either return // valid output or print a short-usage var dCmd *exec.Cmd // skipNoArgs are ones that we don't want to try w/o // any args. Either because it'll hang the test or // lead to incorrect test result (like false negative). // Whatever the reason, skip trying to run w/o args and // jump to trying with a bogus arg. skipNoArgs := map[string]struct{}{ "daemon": {}, "events": {}, "load": {}, } ec := 0 if _, ok := skipNoArgs[cmd]; !ok { args = strings.Split(cmd, " ") dCmd = exec.Command(dockerBinary, args...) out, stderr, ec, err = runCommandWithStdoutStderr(dCmd) } // If its ok w/o any args then try again with an arg if ec == 0 { args = strings.Split(cmd+" badArg", " ") dCmd = exec.Command(dockerBinary, args...) out, stderr, ec, err = runCommandWithStdoutStderr(dCmd) } if len(out) != 0 || len(stderr) == 0 || ec == 0 || err == nil { return fmt.Errorf("Bad output from %q\nstdout:%q\nstderr:%q\nec:%d\nerr:%q\n", args, out, stderr, ec, err) } // Should have just short usage if !strings.Contains(stderr, "\nUsage:\t") { return fmt.Errorf("Missing short usage on %q\n", args) } // But shouldn't have full usage if strings.Contains(stderr, "--help=false") { return fmt.Errorf("Should not have full usage on %q\n", args) } if strings.HasSuffix(stderr, "\n\n") { return fmt.Errorf("Should not have a blank line on %q\n", args) } } return nil }