cobra/bash_completions_test.go
Luap99 50258f15eb
Complete subcommands when TraverseChildren is set (#1171)
* Complete subcommands when TraverseChildren is true in custom completion

The current custom completion logic does not complete
subcommands when a local flag is set. This is good unless
TraverseChildren is set to true where local flags
can be set on parent commands.

This commit allows subcommands to be completed
if TraverseChildren is set to true on the root cmd.

Closes #1170

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>

* Complete subcommands when TraverseChildren is true in bash completion

The current bash completion logic does not complete
subcommands when a local flag is set. There is also a bug
where subcommands are sometimes still getting completed. see: #1172

If TraverseChildren is true we should allow subcommands
to be completed even if a local flag is set.

Closes #1172

Signed-off-by: Paul Holzinger <paul.holzinger@web.de>
2020-09-09 09:34:51 -06:00

263 lines
8.8 KiB
Go

package cobra
import (
"bytes"
"fmt"
"os"
"os/exec"
"regexp"
"strings"
"testing"
)
func checkOmit(t *testing.T, found, unexpected string) {
if strings.Contains(found, unexpected) {
t.Errorf("Got: %q\nBut should not have!\n", unexpected)
}
}
func check(t *testing.T, found, expected string) {
if !strings.Contains(found, expected) {
t.Errorf("Expecting to contain: \n %q\nGot:\n %q\n", expected, found)
}
}
func checkNumOccurrences(t *testing.T, found, expected string, expectedOccurrences int) {
numOccurrences := strings.Count(found, expected)
if numOccurrences != expectedOccurrences {
t.Errorf("Expecting to contain %d occurrences of: \n %q\nGot %d:\n %q\n", expectedOccurrences, expected, numOccurrences, found)
}
}
func checkRegex(t *testing.T, found, pattern string) {
matched, err := regexp.MatchString(pattern, found)
if err != nil {
t.Errorf("Error thrown performing MatchString: \n %s\n", err)
}
if !matched {
t.Errorf("Expecting to match: \n %q\nGot:\n %q\n", pattern, found)
}
}
func runShellCheck(s string) error {
excluded := []string{
"SC2034", // PREFIX appears unused. Verify it or export it.
}
cmd := exec.Command("shellcheck", "-s", "bash", "-", "-e", strings.Join(excluded, ","))
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
stdin, err := cmd.StdinPipe()
if err != nil {
return err
}
go func() {
stdin.Write([]byte(s))
stdin.Close()
}()
return cmd.Run()
}
// World worst custom function, just keep telling you to enter hello!
const bashCompletionFunc = `__root_custom_func() {
COMPREPLY=( "hello" )
}
`
func TestBashCompletions(t *testing.T) {
rootCmd := &Command{
Use: "root",
ArgAliases: []string{"pods", "nodes", "services", "replicationcontrollers", "po", "no", "svc", "rc"},
ValidArgs: []string{"pod", "node", "service", "replicationcontroller"},
BashCompletionFunction: bashCompletionFunc,
Run: emptyRun,
}
rootCmd.Flags().IntP("introot", "i", -1, "help message for flag introot")
rootCmd.MarkFlagRequired("introot")
// Filename.
rootCmd.Flags().String("filename", "", "Enter a filename")
rootCmd.MarkFlagFilename("filename", "json", "yaml", "yml")
// Persistent filename.
rootCmd.PersistentFlags().String("persistent-filename", "", "Enter a filename")
rootCmd.MarkPersistentFlagFilename("persistent-filename")
rootCmd.MarkPersistentFlagRequired("persistent-filename")
// Filename extensions.
rootCmd.Flags().String("filename-ext", "", "Enter a filename (extension limited)")
rootCmd.MarkFlagFilename("filename-ext")
rootCmd.Flags().String("custom", "", "Enter a filename (extension limited)")
rootCmd.MarkFlagCustom("custom", "__complete_custom")
// Subdirectories in a given directory.
rootCmd.Flags().String("theme", "", "theme to use (located in /themes/THEMENAME/)")
rootCmd.Flags().SetAnnotation("theme", BashCompSubdirsInDir, []string{"themes"})
// For two word flags check
rootCmd.Flags().StringP("two", "t", "", "this is two word flags")
rootCmd.Flags().BoolP("two-w-default", "T", false, "this is not two word flags")
echoCmd := &Command{
Use: "echo [string to echo]",
Aliases: []string{"say"},
Short: "Echo anything to the screen",
Long: "an utterly useless command for testing.",
Example: "Just run cobra-test echo",
Run: emptyRun,
}
echoCmd.Flags().String("filename", "", "Enter a filename")
echoCmd.MarkFlagFilename("filename", "json", "yaml", "yml")
echoCmd.Flags().String("config", "", "config to use (located in /config/PROFILE/)")
echoCmd.Flags().SetAnnotation("config", BashCompSubdirsInDir, []string{"config"})
printCmd := &Command{
Use: "print [string to print]",
Args: MinimumNArgs(1),
Short: "Print anything to the screen",
Long: "an absolutely utterly useless command for testing.",
Run: emptyRun,
}
deprecatedCmd := &Command{
Use: "deprecated [can't do anything here]",
Args: NoArgs,
Short: "A command which is deprecated",
Long: "an absolutely utterly useless command for testing deprecation!.",
Deprecated: "Please use echo instead",
Run: emptyRun,
}
colonCmd := &Command{
Use: "cmd:colon",
Run: emptyRun,
}
timesCmd := &Command{
Use: "times [# times] [string to echo]",
SuggestFor: []string{"counts"},
Args: OnlyValidArgs,
ValidArgs: []string{"one", "two", "three", "four"},
Short: "Echo anything to the screen more times",
Long: "a slightly useless command for testing.",
Run: emptyRun,
}
echoCmd.AddCommand(timesCmd)
rootCmd.AddCommand(echoCmd, printCmd, deprecatedCmd, colonCmd)
buf := new(bytes.Buffer)
rootCmd.GenBashCompletion(buf)
output := buf.String()
check(t, output, "_root")
check(t, output, "_root_echo")
check(t, output, "_root_echo_times")
check(t, output, "_root_print")
check(t, output, "_root_cmd__colon")
// check for required flags
check(t, output, `must_have_one_flag+=("--introot=")`)
check(t, output, `must_have_one_flag+=("--persistent-filename=")`)
// check for custom completion function with both qualified and unqualified name
checkNumOccurrences(t, output, `__custom_func`, 2) // 1. check existence, 2. invoke
checkNumOccurrences(t, output, `__root_custom_func`, 3) // 1. check existence, 2. invoke, 3. actual definition
// check for custom completion function body
check(t, output, `COMPREPLY=( "hello" )`)
// check for required nouns
check(t, output, `must_have_one_noun+=("pod")`)
// check for noun aliases
check(t, output, `noun_aliases+=("pods")`)
check(t, output, `noun_aliases+=("rc")`)
checkOmit(t, output, `must_have_one_noun+=("pods")`)
// check for filename extension flags
check(t, output, `flags_completion+=("_filedir")`)
// check for filename extension flags
check(t, output, `must_have_one_noun+=("three")`)
// check for filename extension flags
check(t, output, fmt.Sprintf(`flags_completion+=("__%s_handle_filename_extension_flag json|yaml|yml")`, rootCmd.Name()))
// check for filename extension flags in a subcommand
checkRegex(t, output, fmt.Sprintf(`_root_echo\(\)\n{[^}]*flags_completion\+=\("__%s_handle_filename_extension_flag json\|yaml\|yml"\)`, rootCmd.Name()))
// check for custom flags
check(t, output, `flags_completion+=("__complete_custom")`)
// check for subdirs_in_dir flags
check(t, output, fmt.Sprintf(`flags_completion+=("__%s_handle_subdirs_in_dir_flag themes")`, rootCmd.Name()))
// check for subdirs_in_dir flags in a subcommand
checkRegex(t, output, fmt.Sprintf(`_root_echo\(\)\n{[^}]*flags_completion\+=\("__%s_handle_subdirs_in_dir_flag config"\)`, rootCmd.Name()))
// check two word flags
check(t, output, `two_word_flags+=("--two")`)
check(t, output, `two_word_flags+=("-t")`)
checkOmit(t, output, `two_word_flags+=("--two-w-default")`)
checkOmit(t, output, `two_word_flags+=("-T")`)
// check local nonpersistent flag
check(t, output, `local_nonpersistent_flags+=("--two")`)
check(t, output, `local_nonpersistent_flags+=("--two=")`)
check(t, output, `local_nonpersistent_flags+=("-t")`)
check(t, output, `local_nonpersistent_flags+=("--two-w-default")`)
check(t, output, `local_nonpersistent_flags+=("-T")`)
checkOmit(t, output, deprecatedCmd.Name())
// If available, run shellcheck against the script.
if err := exec.Command("which", "shellcheck").Run(); err != nil {
return
}
if err := runShellCheck(output); err != nil {
t.Fatalf("shellcheck failed: %v", err)
}
}
func TestBashCompletionHiddenFlag(t *testing.T) {
c := &Command{Use: "c", Run: emptyRun}
const flagName = "hiddenFlag"
c.Flags().Bool(flagName, false, "")
c.Flags().MarkHidden(flagName)
buf := new(bytes.Buffer)
c.GenBashCompletion(buf)
output := buf.String()
if strings.Contains(output, flagName) {
t.Errorf("Expected completion to not include %q flag: Got %v", flagName, output)
}
}
func TestBashCompletionDeprecatedFlag(t *testing.T) {
c := &Command{Use: "c", Run: emptyRun}
const flagName = "deprecated-flag"
c.Flags().Bool(flagName, false, "")
c.Flags().MarkDeprecated(flagName, "use --not-deprecated instead")
buf := new(bytes.Buffer)
c.GenBashCompletion(buf)
output := buf.String()
if strings.Contains(output, flagName) {
t.Errorf("expected completion to not include %q flag: Got %v", flagName, output)
}
}
func TestBashCompletionTraverseChildren(t *testing.T) {
c := &Command{Use: "c", Run: emptyRun, TraverseChildren: true}
c.Flags().StringP("string-flag", "s", "", "string flag")
c.Flags().BoolP("bool-flag", "b", false, "bool flag")
buf := new(bytes.Buffer)
c.GenBashCompletion(buf)
output := buf.String()
// check that local nonpersistent flag are not set since we have TraverseChildren set to true
checkOmit(t, output, `local_nonpersistent_flags+=("--string-flag")`)
checkOmit(t, output, `local_nonpersistent_flags+=("--string-flag=")`)
checkOmit(t, output, `local_nonpersistent_flags+=("-s")`)
checkOmit(t, output, `local_nonpersistent_flags+=("--bool-flag")`)
checkOmit(t, output, `local_nonpersistent_flags+=("-b")`)
}