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// Copyright 2013-2023 The Cobra Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
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 {
cmd := exec.Command("shellcheck", "-s", "bash", "-", "-e",
"SC2034", // PREFIX appears unused. Verify it or export it.
)
cmd.Stderr = os.Stderr
cmd.Stdout = os.Stdout
stdin, err := cmd.StdinPipe()
if err != nil {
return err
}
go func() {
_, err := stdin.Write([]byte(s))
CheckErr(err)
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")
assertNoErr(t, rootCmd.MarkFlagRequired("introot"))
// Filename.
rootCmd.Flags().String("filename", "", "Enter a filename")
assertNoErr(t, rootCmd.MarkFlagFilename("filename", "json", "yaml", "yml"))
// Persistent filename.
rootCmd.PersistentFlags().String("persistent-filename", "", "Enter a filename")
assertNoErr(t, rootCmd.MarkPersistentFlagFilename("persistent-filename"))
assertNoErr(t, rootCmd.MarkPersistentFlagRequired("persistent-filename"))
// Filename extensions.
rootCmd.Flags().String("filename-ext", "", "Enter a filename (extension limited)")
assertNoErr(t, rootCmd.MarkFlagFilename("filename-ext"))
rootCmd.Flags().String("custom", "", "Enter a filename (extension limited)")
assertNoErr(t, rootCmd.MarkFlagCustom("custom", "__complete_custom"))
// Subdirectories in a given directory.
rootCmd.Flags().String("theme", "", "theme to use (located in /themes/THEMENAME/)")
assertNoErr(t, 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")
assertNoErr(t, echoCmd.MarkFlagFilename("filename", "json", "yaml", "yml"))
echoCmd.Flags().String("config", "", "config to use (located in /config/PROFILE/)")
assertNoErr(t, 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)
assertNoErr(t, 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, "")
assertNoErr(t, c.Flags().MarkHidden(flagName))
buf := new(bytes.Buffer)
assertNoErr(t, 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, "")
assertNoErr(t, c.Flags().MarkDeprecated(flagName, "use --not-deprecated instead"))
buf := new(bytes.Buffer)
assertNoErr(t, 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)
assertNoErr(t, 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")`)
}
func TestBashCompletionNoActiveHelp(t *testing.T) {
c := &Command{Use: "c", Run: emptyRun}
buf := new(bytes.Buffer)
assertNoErr(t, c.GenBashCompletion(buf))
output := buf.String()
// check that active help is being disabled
activeHelpVar := activeHelpEnvVar(c.Name())
check(t, output, fmt.Sprintf("%s=0", activeHelpVar))
}
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