docker/integration-cli/docker_cli_help_test.go

131 строка
4.0 KiB
Go

package main
import (
"os"
"os/exec"
"runtime"
"strings"
"testing"
"unicode"
"github.com/docker/docker/pkg/homedir"
)
func TestHelpWidth(t *testing.T) {
// 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 := os.Environ()
// 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, ec, err := runCommandWithOutput(helpCmd)
if err != nil || ec != 0 {
t.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
}
lines := strings.Split(out, "\n")
for _, line := range lines {
if len(line) > 80 {
t.Fatalf("Line is too long(%d chars):\n%s", len(line), line)
}
if scanForHome && strings.Contains(line, `=`+home) {
t.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] != '/' {
t.Fatalf("Main help should not have used home shortcut:\n%s", line)
}
}
}
// Make sure each cmd's help text fits within 80 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, ec, err = runCommandWithOutput(helpCmd)
if err != nil || ec != 0 {
t.Fatalf("docker help should have worked\nout:%s\nec:%d", out, ec)
}
i := strings.Index(out, "Commands:")
if i < 0 {
t.Fatalf("Missing 'Commands:' in:\n%s", out)
}
// Grab all chars starting at "Commands:"
// Skip first line, its "Commands:"
cmds := []string{}
for _, cmd := range strings.Split(out[i:], "\n")[1:] {
// 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)
helpCmd := exec.Command(dockerBinary, cmd, "--help")
helpCmd.Env = newEnvs
out, ec, err := runCommandWithOutput(helpCmd)
if err != nil || ec != 0 {
t.Fatalf("Error on %q help: %s\nexit code:%d", cmd, out, ec)
}
lines := strings.Split(out, "\n")
for _, line := range lines {
if len(line) > 80 {
t.Fatalf("Help for %q is too long(%d chars):\n%s", cmd,
len(line), line)
}
if scanForHome && strings.Contains(line, `"`+home) {
t.Fatalf("Help for %q should use ~ instead of %q on:\n%s",
cmd, home, line)
}
i := strings.Index(line, "~")
if i >= 0 && i != len(line)-1 && line[i+1] != '/' {
t.Fatalf("Help for %q should not have used ~:\n%s", cmd, line)
}
}
}
expected := 39
if len(cmds) != expected {
t.Fatalf("Wrong # of cmds(%d), it should be: %d\nThe list:\n%q",
len(cmds), expected, cmds)
}
}
logDone("help - widths")
}