765 lines
18 KiB
Go
765 lines
18 KiB
Go
package cli
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import (
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"bytes"
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"flag"
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"fmt"
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"io"
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"runtime"
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"strings"
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"testing"
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)
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func Test_ShowAppHelp_NoAuthor(t *testing.T) {
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output := new(bytes.Buffer)
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app := &App{Writer: output}
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c := NewContext(app, nil, nil)
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_ = ShowAppHelp(c)
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if bytes.Contains(output.Bytes(), []byte("AUTHOR(S):")) {
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t.Errorf("expected\n%snot to include %s", output.String(), "AUTHOR(S):")
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}
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}
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func Test_ShowAppHelp_NoVersion(t *testing.T) {
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output := new(bytes.Buffer)
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app := &App{Writer: output}
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app.Version = ""
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c := NewContext(app, nil, nil)
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_ = ShowAppHelp(c)
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if bytes.Contains(output.Bytes(), []byte("VERSION:")) {
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t.Errorf("expected\n%snot to include %s", output.String(), "VERSION:")
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}
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}
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func Test_ShowAppHelp_HideVersion(t *testing.T) {
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output := new(bytes.Buffer)
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app := &App{Writer: output}
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app.HideVersion = true
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c := NewContext(app, nil, nil)
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_ = ShowAppHelp(c)
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if bytes.Contains(output.Bytes(), []byte("VERSION:")) {
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t.Errorf("expected\n%snot to include %s", output.String(), "VERSION:")
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}
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}
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func Test_Help_Custom_Flags(t *testing.T) {
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oldFlag := HelpFlag
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defer func() {
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HelpFlag = oldFlag
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}()
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HelpFlag = &BoolFlag{
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Name: "help",
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Aliases: []string{"x"},
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Usage: "show help",
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}
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app := App{
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Flags: []Flag{
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&BoolFlag{Name: "foo", Aliases: []string{"h"}},
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},
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Action: func(ctx *Context) error {
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if ctx.Bool("h") != true {
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t.Errorf("custom help flag not set")
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}
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return nil
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},
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}
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output := new(bytes.Buffer)
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app.Writer = output
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_ = app.Run([]string{"test", "-h"})
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if output.Len() > 0 {
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t.Errorf("unexpected output: %s", output.String())
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}
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}
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func Test_Version_Custom_Flags(t *testing.T) {
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oldFlag := VersionFlag
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defer func() {
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VersionFlag = oldFlag
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}()
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VersionFlag = &BoolFlag{
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Name: "version",
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Aliases: []string{"V"},
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Usage: "show version",
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}
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app := App{
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Flags: []Flag{
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&BoolFlag{Name: "foo", Aliases: []string{"v"}},
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},
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Action: func(ctx *Context) error {
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if ctx.Bool("v") != true {
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t.Errorf("custom version flag not set")
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}
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return nil
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},
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}
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output := new(bytes.Buffer)
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app.Writer = output
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_ = app.Run([]string{"test", "-v"})
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if output.Len() > 0 {
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t.Errorf("unexpected output: %s", output.String())
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}
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}
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func Test_helpCommand_Action_ErrorIfNoTopic(t *testing.T) {
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app := &App{}
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set := flag.NewFlagSet("test", 0)
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_ = set.Parse([]string{"foo"})
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c := NewContext(app, set, nil)
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err := helpCommand.Action(c)
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if err == nil {
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t.Fatalf("expected error from helpCommand.Action(), but got nil")
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}
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exitErr, ok := err.(*exitError)
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if !ok {
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t.Fatalf("expected *exitError from helpCommand.Action(), but instead got: %v", err.Error())
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}
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if !strings.HasPrefix(exitErr.Error(), "No help topic for") {
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t.Fatalf("expected an unknown help topic error, but got: %v", exitErr.Error())
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}
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if exitErr.exitCode != 3 {
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t.Fatalf("expected exit value = 3, got %d instead", exitErr.exitCode)
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}
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}
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func Test_helpCommand_InHelpOutput(t *testing.T) {
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app := &App{}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"test", "--help"})
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s := output.String()
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if strings.Contains(s, "\nCOMMANDS:\nGLOBAL OPTIONS:\n") {
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t.Fatalf("empty COMMANDS section detected: %q", s)
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}
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if !strings.Contains(s, "help, h") {
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t.Fatalf("missing \"help, h\": %q", s)
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}
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}
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func Test_helpSubcommand_Action_ErrorIfNoTopic(t *testing.T) {
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app := &App{}
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set := flag.NewFlagSet("test", 0)
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_ = set.Parse([]string{"foo"})
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c := NewContext(app, set, nil)
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err := helpSubcommand.Action(c)
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if err == nil {
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t.Fatalf("expected error from helpCommand.Action(), but got nil")
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}
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exitErr, ok := err.(*exitError)
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if !ok {
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t.Fatalf("expected *exitError from helpCommand.Action(), but instead got: %v", err.Error())
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}
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if !strings.HasPrefix(exitErr.Error(), "No help topic for") {
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t.Fatalf("expected an unknown help topic error, but got: %v", exitErr.Error())
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}
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if exitErr.exitCode != 3 {
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t.Fatalf("expected exit value = 3, got %d instead", exitErr.exitCode)
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}
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}
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func TestShowAppHelp_CommandAliases(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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Aliases: []string{"fr", "frob"},
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Action: func(ctx *Context) error {
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return nil
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},
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"foo", "--help"})
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if !strings.Contains(output.String(), "frobbly, fr, frob") {
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t.Errorf("expected output to include all command aliases; got: %q", output.String())
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}
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}
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func TestShowCommandHelp_HelpPrinter(t *testing.T) {
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doublecho := func(text string) string {
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return text + " " + text
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}
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tests := []struct {
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name string
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template string
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printer helpPrinter
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command string
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wantTemplate string
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wantOutput string
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}{
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{
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name: "no-command",
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template: "",
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printer: func(w io.Writer, templ string, data interface{}) {
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fmt.Fprint(w, "yo")
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},
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command: "",
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wantTemplate: SubcommandHelpTemplate,
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wantOutput: "yo",
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},
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{
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name: "standard-command",
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template: "",
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printer: func(w io.Writer, templ string, data interface{}) {
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fmt.Fprint(w, "yo")
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},
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command: "my-command",
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wantTemplate: CommandHelpTemplate,
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wantOutput: "yo",
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},
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{
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name: "custom-template-command",
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template: "{{doublecho .Name}}",
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printer: func(w io.Writer, templ string, data interface{}) {
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// Pass a custom function to ensure it gets used
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fm := map[string]interface{}{"doublecho": doublecho}
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HelpPrinterCustom(w, templ, data, fm)
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},
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command: "my-command",
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wantTemplate: "{{doublecho .Name}}",
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wantOutput: "my-command my-command",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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defer func(old helpPrinter) {
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HelpPrinter = old
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}(HelpPrinter)
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HelpPrinter = func(w io.Writer, templ string, data interface{}) {
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if templ != tt.wantTemplate {
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t.Errorf("want template:\n%s\ngot template:\n%s", tt.wantTemplate, templ)
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}
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tt.printer(w, templ, data)
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}
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var buf bytes.Buffer
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app := &App{
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Name: "my-app",
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Writer: &buf,
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Commands: []*Command{
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{
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Name: "my-command",
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CustomHelpTemplate: tt.template,
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},
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},
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}
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err := app.Run([]string{"my-app", "help", tt.command})
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if err != nil {
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t.Fatal(err)
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}
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got := buf.String()
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if got != tt.wantOutput {
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t.Errorf("want output %q, got %q", tt.wantOutput, got)
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}
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})
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}
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}
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func TestShowCommandHelp_HelpPrinterCustom(t *testing.T) {
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doublecho := func(text string) string {
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return text + " " + text
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}
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tests := []struct {
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name string
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template string
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printer helpPrinterCustom
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command string
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wantTemplate string
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wantOutput string
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}{
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{
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name: "no-command",
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template: "",
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printer: func(w io.Writer, templ string, data interface{}, fm map[string]interface{}) {
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fmt.Fprint(w, "yo")
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},
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command: "",
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wantTemplate: SubcommandHelpTemplate,
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wantOutput: "yo",
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},
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{
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name: "standard-command",
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template: "",
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printer: func(w io.Writer, templ string, data interface{}, fm map[string]interface{}) {
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fmt.Fprint(w, "yo")
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},
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command: "my-command",
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wantTemplate: CommandHelpTemplate,
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wantOutput: "yo",
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},
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{
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name: "custom-template-command",
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template: "{{doublecho .Name}}",
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printer: func(w io.Writer, templ string, data interface{}, _ map[string]interface{}) {
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// Pass a custom function to ensure it gets used
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fm := map[string]interface{}{"doublecho": doublecho}
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printHelpCustom(w, templ, data, fm)
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},
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command: "my-command",
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wantTemplate: "{{doublecho .Name}}",
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wantOutput: "my-command my-command",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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defer func(old helpPrinterCustom) {
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HelpPrinterCustom = old
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}(HelpPrinterCustom)
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HelpPrinterCustom = func(w io.Writer, templ string, data interface{}, fm map[string]interface{}) {
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if fm != nil {
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t.Error("unexpected function map passed")
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}
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if templ != tt.wantTemplate {
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t.Errorf("want template:\n%s\ngot template:\n%s", tt.wantTemplate, templ)
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}
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tt.printer(w, templ, data, fm)
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}
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var buf bytes.Buffer
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app := &App{
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Name: "my-app",
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Writer: &buf,
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Commands: []*Command{
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{
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Name: "my-command",
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CustomHelpTemplate: tt.template,
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},
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},
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}
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err := app.Run([]string{"my-app", "help", tt.command})
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if err != nil {
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t.Fatal(err)
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}
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got := buf.String()
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if got != tt.wantOutput {
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t.Errorf("want output %q, got %q", tt.wantOutput, got)
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}
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})
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}
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}
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func TestShowCommandHelp_CommandAliases(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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Aliases: []string{"fr", "frob", "bork"},
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Action: func(ctx *Context) error {
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return nil
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},
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"foo", "help", "fr"})
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if !strings.Contains(output.String(), "frobbly") {
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t.Errorf("expected output to include command name; got: %q", output.String())
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}
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if strings.Contains(output.String(), "bork") {
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t.Errorf("expected output to exclude command aliases; got: %q", output.String())
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}
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}
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func TestShowSubcommandHelp_CommandAliases(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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Aliases: []string{"fr", "frob", "bork"},
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Action: func(ctx *Context) error {
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return nil
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},
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"foo", "help"})
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if !strings.Contains(output.String(), "frobbly, fr, frob, bork") {
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t.Errorf("expected output to include all command aliases; got: %q", output.String())
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}
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}
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func TestShowCommandHelp_Customtemplate(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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Action: func(ctx *Context) error {
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return nil
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},
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HelpName: "foo frobbly",
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CustomHelpTemplate: `NAME:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}} [FLAGS] TARGET [TARGET ...]
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}
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EXAMPLES:
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1. Frobbly runs with this param locally.
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$ {{.HelpName}} wobbly
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`,
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"foo", "help", "frobbly"})
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if strings.Contains(output.String(), "2. Frobbly runs without this param locally.") {
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t.Errorf("expected output to exclude \"2. Frobbly runs without this param locally.\"; got: %q", output.String())
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}
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if !strings.Contains(output.String(), "1. Frobbly runs with this param locally.") {
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t.Errorf("expected output to include \"1. Frobbly runs with this param locally.\"; got: %q", output.String())
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}
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if !strings.Contains(output.String(), "$ foo frobbly wobbly") {
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t.Errorf("expected output to include \"$ foo frobbly wobbly\"; got: %q", output.String())
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}
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}
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func TestShowSubcommandHelp_CommandUsageText(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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UsageText: "this is usage text",
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"foo", "frobbly", "--help"})
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if !strings.Contains(output.String(), "this is usage text") {
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t.Errorf("expected output to include usage text; got: %q", output.String())
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}
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}
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func TestShowSubcommandHelp_SubcommandUsageText(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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Subcommands: []*Command{
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{
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Name: "bobbly",
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UsageText: "this is usage text",
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},
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},
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"foo", "frobbly", "bobbly", "--help"})
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if !strings.Contains(output.String(), "this is usage text") {
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t.Errorf("expected output to include usage text; got: %q", output.String())
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}
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}
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func TestShowAppHelp_HiddenCommand(t *testing.T) {
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app := &App{
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Commands: []*Command{
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{
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Name: "frobbly",
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Action: func(ctx *Context) error {
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return nil
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},
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},
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{
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Name: "secretfrob",
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Hidden: true,
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Action: func(ctx *Context) error {
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return nil
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},
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},
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},
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}
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output := &bytes.Buffer{}
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app.Writer = output
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_ = app.Run([]string{"app", "--help"})
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if strings.Contains(output.String(), "secretfrob") {
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t.Errorf("expected output to exclude \"secretfrob\"; got: %q", output.String())
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}
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if !strings.Contains(output.String(), "frobbly") {
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t.Errorf("expected output to include \"frobbly\"; got: %q", output.String())
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}
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}
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func TestShowAppHelp_HelpPrinter(t *testing.T) {
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doublecho := func(text string) string {
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return text + " " + text
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}
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|
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tests := []struct {
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name string
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template string
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printer helpPrinter
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wantTemplate string
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wantOutput string
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}{
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{
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name: "standard-command",
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template: "",
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printer: func(w io.Writer, templ string, data interface{}) {
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fmt.Fprint(w, "yo")
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},
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wantTemplate: AppHelpTemplate,
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wantOutput: "yo",
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},
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{
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name: "custom-template-command",
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template: "{{doublecho .Name}}",
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printer: func(w io.Writer, templ string, data interface{}) {
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// Pass a custom function to ensure it gets used
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fm := map[string]interface{}{"doublecho": doublecho}
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printHelpCustom(w, templ, data, fm)
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|
},
|
|
wantTemplate: "{{doublecho .Name}}",
|
|
wantOutput: "my-app my-app",
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
defer func(old helpPrinter) {
|
|
HelpPrinter = old
|
|
}(HelpPrinter)
|
|
HelpPrinter = func(w io.Writer, templ string, data interface{}) {
|
|
if templ != tt.wantTemplate {
|
|
t.Errorf("want template:\n%s\ngot template:\n%s", tt.wantTemplate, templ)
|
|
}
|
|
|
|
tt.printer(w, templ, data)
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
app := &App{
|
|
Name: "my-app",
|
|
Writer: &buf,
|
|
CustomAppHelpTemplate: tt.template,
|
|
}
|
|
|
|
err := app.Run([]string{"my-app", "help"})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
got := buf.String()
|
|
if got != tt.wantOutput {
|
|
t.Errorf("want output %q, got %q", tt.wantOutput, got)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestShowAppHelp_HelpPrinterCustom(t *testing.T) {
|
|
doublecho := func(text string) string {
|
|
return text + " " + text
|
|
}
|
|
|
|
tests := []struct {
|
|
name string
|
|
template string
|
|
printer helpPrinterCustom
|
|
wantTemplate string
|
|
wantOutput string
|
|
}{
|
|
{
|
|
name: "standard-command",
|
|
template: "",
|
|
printer: func(w io.Writer, templ string, data interface{}, fm map[string]interface{}) {
|
|
fmt.Fprint(w, "yo")
|
|
},
|
|
wantTemplate: AppHelpTemplate,
|
|
wantOutput: "yo",
|
|
},
|
|
{
|
|
name: "custom-template-command",
|
|
template: "{{doublecho .Name}}",
|
|
printer: func(w io.Writer, templ string, data interface{}, _ map[string]interface{}) {
|
|
// Pass a custom function to ensure it gets used
|
|
fm := map[string]interface{}{"doublecho": doublecho}
|
|
printHelpCustom(w, templ, data, fm)
|
|
},
|
|
wantTemplate: "{{doublecho .Name}}",
|
|
wantOutput: "my-app my-app",
|
|
},
|
|
}
|
|
|
|
for _, tt := range tests {
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
defer func(old helpPrinterCustom) {
|
|
HelpPrinterCustom = old
|
|
}(HelpPrinterCustom)
|
|
HelpPrinterCustom = func(w io.Writer, templ string, data interface{}, fm map[string]interface{}) {
|
|
if fm != nil {
|
|
t.Error("unexpected function map passed")
|
|
}
|
|
|
|
if templ != tt.wantTemplate {
|
|
t.Errorf("want template:\n%s\ngot template:\n%s", tt.wantTemplate, templ)
|
|
}
|
|
|
|
tt.printer(w, templ, data, fm)
|
|
}
|
|
|
|
var buf bytes.Buffer
|
|
app := &App{
|
|
Name: "my-app",
|
|
Writer: &buf,
|
|
CustomAppHelpTemplate: tt.template,
|
|
}
|
|
|
|
err := app.Run([]string{"my-app", "help"})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
got := buf.String()
|
|
if got != tt.wantOutput {
|
|
t.Errorf("want output %q, got %q", tt.wantOutput, got)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestShowAppHelp_CustomAppTemplate(t *testing.T) {
|
|
app := &App{
|
|
Commands: []*Command{
|
|
{
|
|
Name: "frobbly",
|
|
Action: func(ctx *Context) error {
|
|
return nil
|
|
},
|
|
},
|
|
{
|
|
Name: "secretfrob",
|
|
Hidden: true,
|
|
Action: func(ctx *Context) error {
|
|
return nil
|
|
},
|
|
},
|
|
},
|
|
ExtraInfo: func() map[string]string {
|
|
platform := fmt.Sprintf("OS: %s | Arch: %s", runtime.GOOS, runtime.GOARCH)
|
|
goruntime := fmt.Sprintf("Version: %s | CPUs: %d", runtime.Version(), runtime.NumCPU())
|
|
return map[string]string{
|
|
"PLATFORM": platform,
|
|
"RUNTIME": goruntime,
|
|
}
|
|
},
|
|
CustomAppHelpTemplate: `NAME:
|
|
{{.Name}} - {{.Usage}}
|
|
|
|
USAGE:
|
|
{{.Name}} {{if .VisibleFlags}}[FLAGS] {{end}}COMMAND{{if .VisibleFlags}} [COMMAND FLAGS | -h]{{end}} [ARGUMENTS...]
|
|
|
|
COMMANDS:
|
|
{{range .VisibleCommands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
|
|
{{end}}{{if .VisibleFlags}}
|
|
GLOBAL FLAGS:
|
|
{{range .VisibleFlags}}{{.}}
|
|
{{end}}{{end}}
|
|
VERSION:
|
|
2.0.0
|
|
{{"\n"}}{{range $key, $value := ExtraInfo}}
|
|
{{$key}}:
|
|
{{$value}}
|
|
{{end}}`,
|
|
}
|
|
|
|
output := &bytes.Buffer{}
|
|
app.Writer = output
|
|
_ = app.Run([]string{"app", "--help"})
|
|
|
|
if strings.Contains(output.String(), "secretfrob") {
|
|
t.Errorf("expected output to exclude \"secretfrob\"; got: %q", output.String())
|
|
}
|
|
|
|
if !strings.Contains(output.String(), "frobbly") {
|
|
t.Errorf("expected output to include \"frobbly\"; got: %q", output.String())
|
|
}
|
|
|
|
if !strings.Contains(output.String(), "PLATFORM:") ||
|
|
!strings.Contains(output.String(), "OS:") ||
|
|
!strings.Contains(output.String(), "Arch:") {
|
|
t.Errorf("expected output to include \"PLATFORM:, OS: and Arch:\"; got: %q", output.String())
|
|
}
|
|
|
|
if !strings.Contains(output.String(), "RUNTIME:") ||
|
|
!strings.Contains(output.String(), "Version:") ||
|
|
!strings.Contains(output.String(), "CPUs:") {
|
|
t.Errorf("expected output to include \"RUNTIME:, Version: and CPUs:\"; got: %q", output.String())
|
|
}
|
|
|
|
if !strings.Contains(output.String(), "VERSION:") ||
|
|
!strings.Contains(output.String(), "2.0.0") {
|
|
t.Errorf("expected output to include \"VERSION:, 2.0.0\"; got: %q", output.String())
|
|
}
|
|
}
|