mirror of https://github.com/spf13/cobra.git
Fix help text for runnable plugin command
When creating a plugin without sub commands, the help text included the command name (kubectl-plugin) instead of the display name (kubectl plugin): Usage: kubectl-plugin [flags] The issue is that the usage line for this case does not use the command path but the raw `Use` string, and this case was not tested. Add a test for this case and fix UsageLine() to replace the command name with the display name. Tested using https://github.com/nirs/kubernetes/tree/sample-cli-plugin-help
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@ -1441,10 +1441,11 @@ func (c *Command) displayName() string {
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// UseLine puts out the full usage for a given command (including parents).
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func (c *Command) UseLine() string {
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var useline string
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use := strings.Replace(c.Use, c.Name(), c.displayName(), 1)
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if c.HasParent() {
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useline = c.parent.CommandPath() + " " + c.Use
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useline = c.parent.CommandPath() + " " + use
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} else {
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useline = c.Use
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useline = use
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}
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if c.DisableFlagsInUseLine {
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return useline
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@ -370,6 +370,26 @@ func TestAliasPrefixMatching(t *testing.T) {
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// executable is `kubectl-plugin`, but we run it as `kubectl plugin`. The help
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// text should reflect the way we run the command.
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func TestPlugin(t *testing.T) {
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cmd := &Command{
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Use: "kubectl-plugin",
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Args: NoArgs,
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Annotations: map[string]string{
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CommandDisplayNameAnnotation: "kubectl plugin",
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},
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Run: emptyRun,
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}
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cmdHelp, err := executeCommand(cmd, "-h")
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if err != nil {
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t.Errorf("Unexpected error: %v", err)
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}
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checkStringContains(t, cmdHelp, "kubectl plugin [flags]")
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checkStringContains(t, cmdHelp, "help for kubectl plugin")
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}
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// TestPlugin checks usage as plugin with sub commands.
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func TestPluginWithSubCommands(t *testing.T) {
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rootCmd := &Command{
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Use: "kubectl-plugin",
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Args: NoArgs,
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