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command_test.go
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// Copyright (c) 2016 Bob Ziuchkovski
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package writ
import (
"fmt"
"io"
"io/ioutil"
"math"
"os"
"reflect"
"strconv"
"strings"
"testing"
)
func CompareField(structval interface{}, field string, value interface{}) (equal bool, fieldVal interface{}) {
rval := reflect.ValueOf(structval)
for rval.Kind() == reflect.Ptr {
rval = rval.Elem()
}
f := rval.FieldByName(field)
equal = reflect.DeepEqual(f.Interface(), value)
fieldVal = f.Interface()
return
}
/*
* Test command and option routing for multi-tier commands
*/
type topSpec struct {
MidSpec midSpec `command:"mid" alias:"second, 2nd" description:"a mid-level command"`
HelpFlag bool `flag:"h, help" description:"help flag on a top-level command"`
Top int `option:"t, topval" description:"an option on a top-level command"`
}
type midSpec struct {
Mid int `option:"m, midval" description:"an option on a mid-level command"`
HelpFlag bool `flag:"h, help" description:"help flag on a mid-level command"`
BottomSpec bottomSpec `command:"bottom" alias:"third" description:"a bottom-level command"`
}
type bottomSpec struct {
Bottom int `option:"b, bottomval" description:"an option on a bottom-level command"`
HelpFlag bool `flag:"h, help" description:"help flag on a bottom-level command"`
}
type commandFieldTest struct {
Args []string
Valid bool
Err string // TODO: rewrite all Valid: false cases with Err: message
Path string
Positional []string
Field string
Value interface{}
SkipReason string
}
var commandFieldTests = []commandFieldTest{
// Path: top
{Args: []string{}, Valid: true, Path: "top", Positional: []string{}},
{Args: []string{"-"}, Valid: true, Path: "top", Positional: []string{"-"}},
{Args: []string{"-", "mid"}, Valid: true, Path: "top", Positional: []string{"-", "mid"}},
{Args: []string{"--"}, Valid: true, Path: "top", Positional: []string{}},
{Args: []string{"--", "mid"}, Valid: true, Path: "top", Positional: []string{"mid"}},
{Args: []string{"-t", "1"}, Valid: true, Path: "top", Positional: []string{}, Field: "Top", Value: 1},
{Args: []string{"foo", "-t", "1"}, Valid: true, Path: "top", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "foo"}, Valid: true, Path: "top", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"foo", "bar"}, Valid: true, Path: "top", Positional: []string{"foo", "bar"}},
{Args: []string{"foo", "-t", "1", "bar"}, Valid: true, Path: "top", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "foo", "bar"}, Valid: true, Path: "top", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"--", "mid"}, Valid: true, Path: "top", Positional: []string{"mid"}},
{Args: []string{"-t", "1", "--", "mid"}, Valid: true, Path: "top", Positional: []string{"mid"}, Field: "Top", Value: 1},
{Args: []string{"-", "-t", "1", "--", "mid"}, Valid: true, Path: "top", Positional: []string{"-", "mid"}, Field: "Top", Value: 1},
{Args: []string{"--", "-t", "1", "mid"}, Valid: true, Path: "top", Positional: []string{"-t", "1", "mid"}, Field: "Top", Value: 0},
{Args: []string{"--", "-t", "1", "-", "mid"}, Valid: true, Path: "top", Positional: []string{"-t", "1", "-", "mid"}, Field: "Top", Value: 0},
{Args: []string{"bottom"}, Valid: true, Path: "top", Positional: []string{"bottom"}},
{Args: []string{"third"}, Valid: true, Path: "top", Positional: []string{"third"}},
{Args: []string{"bottom", "mid"}, Valid: true, Path: "top", Positional: []string{"bottom", "mid"}},
{Args: []string{"bottom", "second"}, Valid: true, Path: "top", Positional: []string{"bottom", "second"}},
{Args: []string{"bottom", "-", "second"}, Valid: true, Path: "top", Positional: []string{"bottom", "-", "second"}},
{Args: []string{"-m", "2"}, Valid: false},
{Args: []string{"--midval", "2"}, Valid: false},
{Args: []string{"-b", "3"}, Valid: false},
{Args: []string{"--bottomval", "3"}, Valid: false},
{Args: []string{"--bogus", "4"}, Valid: false},
{Args: []string{"--foo"}, Valid: false},
{Args: []string{"--foo=bar"}, Valid: false},
{Args: []string{"-f"}, Valid: false},
{Args: []string{"-f", "bar"}, Valid: false},
{Args: []string{"-fbar"}, Valid: false},
{Args: []string{"--help", "--help"}, Valid: false, Err: `option "--help" specified too many times`},
{Args: []string{"-h", "-h"}, Valid: false, Err: `option "-h" specified too many times`},
{Args: []string{"-hh"}, Valid: false, Err: `option "-h" specified too many times`},
// Path: top mid
{Args: []string{"mid"}, Valid: true, Path: "top mid", Positional: []string{}},
{Args: []string{"mid", "-"}, Valid: true, Path: "top mid", Positional: []string{"-"}},
{Args: []string{"mid", "--"}, Valid: true, Path: "top mid", Positional: []string{}},
{Args: []string{"mid", "-", "bottom"}, Valid: true, Path: "top mid", Positional: []string{"-", "bottom"}},
{Args: []string{"mid", "--", "bottom"}, Valid: true, Path: "top mid", Positional: []string{"bottom"}},
{Args: []string{"mid", "-t", "1"}, Valid: true, Path: "top mid", Positional: []string{}, Field: "Top", Value: 1},
{Args: []string{"mid", "-", "-t", "1"}, Valid: true, Path: "top mid", Positional: []string{"-"}, Field: "Top", Value: 1},
{Args: []string{"mid", "--", "-t", "1"}, Valid: true, Path: "top mid", Positional: []string{"-t", "1"}, Field: "Top", Value: 0},
{Args: []string{"-t", "1", "mid"}, Valid: true, Path: "top mid", Positional: []string{}, Field: "Top", Value: 1},
{Args: []string{"mid", "foo", "-t", "1"}, Valid: true, Path: "top mid", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "foo"}, Valid: true, Path: "top mid", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"mid", "-t", "1", "foo"}, Valid: true, Path: "top mid", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "foo"}, Valid: true, Path: "top mid", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"mid", "foo", "-m", "2"}, Valid: true, Path: "top mid", Positional: []string{"foo"}, Field: "Mid", Value: 2},
{Args: []string{"mid", "-m", "2", "foo"}, Valid: true, Path: "top mid", Positional: []string{"foo"}, Field: "Mid", Value: 2},
{Args: []string{"mid", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}},
{Args: []string{"second", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}},
{Args: []string{"2nd", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}},
{Args: []string{"mid", "foo", "-t", "1", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"mid", "-t", "1", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"mid", "foo", "-m", "2", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Mid", Value: 2},
{Args: []string{"-t", "1", "second", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"second", "foo", "-m", "2", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Mid", Value: 2},
{Args: []string{"-t", "1", "2nd", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"2nd", "foo", "-m", "2", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Mid", Value: 2},
{Args: []string{"mid", "-m", "2", "foo", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Mid", Value: 2},
{Args: []string{"mid", "-m", "2", "foo", "-t", "1", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"mid", "-m", "2", "foo", "-t", "1", "bar"}, Valid: true, Field: "Mid", Value: 2},
{Args: []string{"mid", "-t", "1", "foo", "-m", "2", "bar"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"mid", "-t", "1", "foo", "-m", "2", "bar"}, Valid: true, Field: "Mid", Value: 2},
{Args: []string{"-t", "1", "mid", "foo", "bar", "-m", "2"}, Valid: true, Path: "top mid", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "foo", "bar", "-m", "2"}, Valid: true, Field: "Mid", Value: 2},
{Args: []string{"mid", "-m", "2", "--"}, Valid: true, Path: "top mid", Positional: []string{}, Field: "Mid", Value: 2},
{Args: []string{"mid", "--", "-m", "2"}, Valid: true, Path: "top mid", Positional: []string{"-m", "2"}, Field: "Mid", Value: 0},
{Args: []string{"mid", "--", "bottom", "-b", "3"}, Valid: true, Path: "top mid", Positional: []string{"bottom", "-b", "3"}},
{Args: []string{"mid", "--", "bottom", "-b", "3", "--"}, Valid: true, Path: "top mid", Positional: []string{"bottom", "-b", "3", "--"}},
{Args: []string{"mid", "--", "bottom", "--", "-b", "3"}, Valid: true, Path: "top mid", Positional: []string{"bottom", "--", "-b", "3"}},
{Args: []string{"-m", "2", "mid"}, Valid: false},
{Args: []string{"--midval", "2", "mid"}, Valid: false},
{Args: []string{"-m", "2", "mid", "foo"}, Valid: false},
{Args: []string{"-b", "3", "mid"}, Valid: false},
{Args: []string{"-b", "3", "mid", "foo"}, Valid: false},
{Args: []string{"mid", "-b", "3"}, Valid: false},
{Args: []string{"mid", "-b", "3", "foo"}, Valid: false},
{Args: []string{"mid", "--bogus", "4"}, Valid: false},
{Args: []string{"mid", "--foo"}, Valid: false},
{Args: []string{"mid", "--foo=bar"}, Valid: false},
{Args: []string{"mid", "-f"}, Valid: false},
{Args: []string{"mid", "-f", "bar"}, Valid: false},
{Args: []string{"mid", "-fbar"}, Valid: false},
{Args: []string{"mid", "--help", "--help"}, Valid: false, Err: `option "--help" specified too many times`},
{Args: []string{"mid", "-h", "-h"}, Valid: false, Err: `option "-h" specified too many times`},
{Args: []string{"mid", "-hh"}, Valid: false, Err: `option "-h" specified too many times`},
// Path: top mid bottom
{Args: []string{"mid", "bottom"}, Valid: true, Path: "top mid bottom", Positional: []string{}},
{Args: []string{"mid", "bottom", "-"}, Valid: true, Path: "top mid bottom", Positional: []string{"-"}},
{Args: []string{"mid", "bottom", "--"}, Valid: true, Path: "top mid bottom", Positional: []string{}},
{Args: []string{"mid", "bottom", "-t", "1"}, Valid: true, Path: "top mid bottom", Positional: []string{}, Field: "Top", Value: 1},
{Args: []string{"mid", "-t", "1", "bottom"}, Valid: true, Path: "top mid bottom", Positional: []string{}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "bottom"}, Valid: true, Path: "top mid bottom", Positional: []string{}, Field: "Top", Value: 1},
{Args: []string{"mid", "bottom", "foo", "-t", "1"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"mid", "-t", "1", "bottom", "foo"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "bottom", "foo"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo"}, Field: "Top", Value: 1},
{Args: []string{"mid", "bottom", "foo", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "bottom", "-b", "3", "foo"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "bottom", "foo", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}},
{Args: []string{"mid", "third", "-b", "3", "foo"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo"}, Field: "Bottom", Value: 3},
{Args: []string{"2nd", "third", "foo", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}},
{Args: []string{"-t", "1", "mid", "bottom", "foo", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Top", Value: 1},
{Args: []string{"mid", "bottom", "foo", "-b", "3", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "bottom", "-b", "3", "foo", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "-t", "1", "bottom", "-b", "3", "foo", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "-t", "1", "bottom", "-b", "3", "foo", "bar"}, Valid: true, Field: "Top", Value: 1},
{Args: []string{"mid", "-m", "2", "bottom", "foo", "-b", "3", "bar"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "-m", "2", "bottom", "foo", "-b", "3", "bar"}, Valid: true, Field: "Mid", Value: 2},
{Args: []string{"-t", "1", "mid", "bottom", "foo", "bar", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"-t", "1", "mid", "bottom", "foo", "bar", "-b", "3"}, Valid: true, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "2nd", "bottom", "foo", "bar", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"-t", "1", "2nd", "bottom", "foo", "bar", "-b", "3"}, Valid: true, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "mid", "third", "foo", "bar", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"-t", "1", "mid", "third", "foo", "bar", "-b", "3"}, Valid: true, Field: "Top", Value: 1},
{Args: []string{"-t", "1", "second", "third", "foo", "bar", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"foo", "bar"}, Field: "Bottom", Value: 3},
{Args: []string{"-t", "1", "second", "third", "foo", "bar", "-b", "3"}, Valid: true, Field: "Top", Value: 1},
{Args: []string{"mid", "bottom", "-b", "3", "--"}, Valid: true, Path: "top mid bottom", Positional: []string{}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "bottom", "-", "-b", "3", "--"}, Valid: true, Path: "top mid bottom", Positional: []string{"-"}, Field: "Bottom", Value: 3},
{Args: []string{"mid", "bottom", "--", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"-b", "3"}, Field: "Bottom", Value: 0},
{Args: []string{"mid", "bottom", "-", "--", "-b", "3"}, Valid: true, Path: "top mid bottom", Positional: []string{"-", "-b", "3"}, Field: "Bottom", Value: 0},
{Args: []string{"mid", "-b", "3", "bottom"}, Valid: false},
{Args: []string{"bottom", "-b", "3"}, Valid: false},
{Args: []string{"-b", "3", "bottom"}, Valid: false},
{Args: []string{"-b", "3", "mid", "bottom"}, Valid: false},
{Args: []string{"mid", "--help", "--help", "bottom"}, Valid: false, Err: `option "--help" specified too many times`},
{Args: []string{"mid", "-h", "-h", "bottom"}, Valid: false, Err: `option "-h" specified too many times`},
{Args: []string{"mid", "-hh", "bottom"}, Valid: false, Err: `option "-h" specified too many times`},
// Duplicate option routing (HelpFlag)
{Args: []string{"-h"}, Valid: true, Path: "top", Positional: []string{}, Field: "HelpFlagTop", Value: true},
{Args: []string{"-h"}, Valid: true, Field: "HelpFlagMid", Value: false},
{Args: []string{"-h"}, Valid: true, Field: "HelpFlagBottom", Value: false},
{Args: []string{"-h", "mid"}, Valid: true, Path: "top mid", Positional: []string{}, Field: "HelpFlagTop", Value: true},
{Args: []string{"-h", "mid"}, Valid: true, Field: "HelpFlagMid", Value: false},
{Args: []string{"-h", "mid"}, Valid: true, Field: "HelpFlagBottom", Value: false},
{Args: []string{"mid", "-h"}, Valid: true, Path: "top mid", Positional: []string{}, Field: "HelpFlagMid", Value: true},
{Args: []string{"mid", "-h"}, Valid: true, Field: "HelpFlagTop", Value: false},
{Args: []string{"mid", "-h"}, Valid: true, Field: "HelpFlagBottom", Value: false},
{Args: []string{"mid", "-h", "bottom"}, Valid: true, Path: "top mid bottom", Positional: []string{}, Field: "HelpFlagMid", Value: true},
{Args: []string{"mid", "-h", "bottom"}, Valid: true, Field: "HelpFlagTop", Value: false},
{Args: []string{"mid", "-h", "bottom"}, Valid: true, Field: "HelpFlagBottom", Value: false},
{Args: []string{"mid", "bottom", "-h"}, Valid: true, Path: "top mid bottom", Positional: []string{}, Field: "HelpFlagBottom", Value: true},
{Args: []string{"mid", "bottom", "-h"}, Valid: true, Field: "HelpFlagTop", Value: false},
{Args: []string{"mid", "bottom", "-h"}, Valid: true, Field: "HelpFlagMid", Value: false},
}
func TestCommandFields(t *testing.T) {
for _, test := range commandFieldTests {
spec := &topSpec{}
runCommandFieldTest(t, spec, test)
}
}
func runCommandFieldTest(t *testing.T, spec *topSpec, test commandFieldTest) {
if test.SkipReason != "" {
t.Logf("Test skipped. Args: %q, Field: %s, Reason: %s", test.Args, test.Field, test.SkipReason)
return
}
cmd := New("top", spec)
path, positional, err := cmd.Decode(test.Args)
values := map[string]interface{}{
"Top": spec.Top,
"Mid": spec.MidSpec.Mid,
"Bottom": spec.MidSpec.BottomSpec.Bottom,
"HelpFlagTop": spec.HelpFlag,
"HelpFlagMid": spec.MidSpec.HelpFlag,
"HelpFlagBottom": spec.MidSpec.BottomSpec.HelpFlag,
}
if !test.Valid {
if err == nil {
t.Errorf("Expected error but none received. Args: %q", test.Args)
}
if test.Err != "" && err.Error() != test.Err {
t.Errorf("Invalid error message. Expected: %s, Received: %s", test.Err, err.Error())
}
return
}
if err != nil {
t.Errorf("Received unexpected error. Field: %s, Args: %q, Error: %s", test.Field, test.Args, err)
return
}
if test.Positional != nil && !reflect.DeepEqual(positional, test.Positional) {
t.Errorf("Positional args are incorrect. Args: %q, Expected: %s, Received: %s", test.Args, test.Positional, positional)
return
}
if test.Field != "" && !reflect.DeepEqual(values[test.Field], test.Value) {
t.Errorf("Decoded value is incorrect. Field: %s, Args: %q, Expected: %#v, Received: %#v", test.Field, test.Args, test.Value, values[test.Field])
return
}
if path.First() != cmd {
t.Errorf("Expected first command in path to be top-level command, but got %s instead.", path.First().Name)
return
}
if test.Path != "" && path.String() != test.Path {
t.Errorf("Command path is incorrect. Args: %q, Expected: %s, Received: %s", test.Args, test.Path, path)
return
}
}
func TestCommandString(t *testing.T) {
cmd := New("top", &topSpec{})
if cmd.String() != "top" {
t.Errorf("Invalid Command.String() value. Expected: %q, received: %q", "top", cmd.String())
}
if cmd.Subcommand("mid").String() != "mid" {
t.Errorf("Invalid Command.String() value. Expected: %q, received: %q", "mid", cmd.Subcommand("mid").String())
}
if cmd.Subcommand("mid").Subcommand("bottom").String() != "bottom" {
t.Errorf("Invalid Command.String() value. Expected: %q, received: %q", "bottom", cmd.Subcommand("mid").Subcommand("bottom").String())
}
}
/*
* Test parsing of description metadata
*/
func TestSpecDescriptions(t *testing.T) {
type Spec struct {
Flag bool `flag:"flag" description:"a flag"`
Option int `option:"option" description:"an option"`
Command struct{} `command:"command" description:"a command"`
}
cmd := New("test", &Spec{})
if cmd.Option("flag").Description != "a flag" {
t.Errorf("Flag description is incorrect. Expected: %q, Received: %q", "a flag", cmd.Option("flag").Description)
}
if cmd.Option("option").Description != "an option" {
t.Errorf("Option description is incorrect. Expected: %q, Received: %q", "an option", cmd.Option("option").Description)
}
if cmd.Subcommand("command").Description != "a command" {
t.Errorf("Command description is incorrect. Expected: %q, Received: %q", "a command", cmd.Subcommand("command").Description)
}
}
/*
* Test parsing of placeholder metadata
*/
func TestSpecPlaceholders(t *testing.T) {
type Spec struct {
Option int `option:"option" description:"an option" placeholder:"VALUE"`
}
cmd := New("test", &Spec{})
if cmd.Option("option").Placeholder != "VALUE" {
t.Errorf("Option placeholder is incorrect. Expected: %q, Received: %q", "VALUE", cmd.Option("option").Placeholder)
}
}
/*
* Test default values on fields
*/
type defaultFieldSpec struct {
Default int `option:"d" description:"An int field with a default" default:"42"`
EnvDefault int `option:"e" description:"An int field with an environment default" env:"ENV_DEFAULT"`
StackedDefault int `option:"s" description:"An int field with both a default and environment default" default:"84" env:"STACKED_DEFAULT"`
}
type defaultFieldTest struct {
Args []string
Valid bool
Field string
Value interface{}
EnvKey string
EnvValue string
SkipReason string
}
var defaultFieldTests = []defaultFieldTest{
// Field with a default value
{Args: []string{""}, Valid: true, Field: "Default", Value: 42},
{Args: []string{"-d", "2"}, Valid: true, Field: "Default", Value: 2},
{Args: []string{"-d", "foo"}, Valid: false},
// Field with an environment default
{Args: []string{""}, Valid: true, Field: "EnvDefault", Value: 0},
{Args: []string{""}, Valid: true, EnvKey: "ENV_DEFAULT", EnvValue: "2", Field: "EnvDefault", Value: 2},
{Args: []string{""}, Valid: true, EnvKey: "ENV_DEFAULT", EnvValue: "foo", Field: "EnvDefault", Value: 0},
{Args: []string{"-e", "4"}, Valid: true, EnvKey: "ENV_DEFAULT", EnvValue: "2", Field: "EnvDefault", Value: 4},
{Args: []string{"-e", "4"}, Valid: true, EnvKey: "ENV_DEFAULT", EnvValue: "foo", Field: "EnvDefault", Value: 4},
{Args: []string{"-e", "foo"}, Valid: false, EnvKey: "ENV_DEFAULT", EnvValue: "2"},
// Field with both a default value and an environment default
{Args: []string{""}, Valid: true, Field: "StackedDefault", Value: 84},
{Args: []string{""}, Valid: true, EnvKey: "STACKED_DEFAULT", EnvValue: "2", Field: "StackedDefault", Value: 2},
{Args: []string{""}, Valid: true, EnvKey: "STACKED_DEFAULT", EnvValue: "foo", Field: "StackedDefault", Value: 84},
{Args: []string{"-s", "4"}, Valid: true, EnvKey: "STACKED_DEFAULT", EnvValue: "2", Field: "StackedDefault", Value: 4},
{Args: []string{"-s", "4"}, Valid: true, EnvKey: "STACKED_DEFAULT", EnvValue: "foo", Field: "StackedDefault", Value: 4},
{Args: []string{"-s", "foo"}, Valid: false, EnvKey: "STACKED_DEFAULT", EnvValue: "foo"},
{Args: []string{"-s", "foo"}, Valid: false},
}
func TestDefaultFields(t *testing.T) {
for _, test := range defaultFieldTests {
spec := &defaultFieldSpec{}
runDefaultFieldTest(t, spec, test)
}
}
func runDefaultFieldTest(t *testing.T, spec interface{}, test defaultFieldTest) {
if test.SkipReason != "" {
t.Logf("Test skipped. Args: %q, Field: %s, Reason: %s", test.Args, test.Field, test.SkipReason)
return
}
if test.EnvKey != "" {
realval := os.Getenv(test.EnvKey)
defer (func() { os.Setenv(test.EnvKey, realval) })()
os.Setenv(test.EnvKey, test.EnvValue)
}
cmd := New("test", spec)
_, _, err := cmd.Decode(test.Args)
if !test.Valid {
if err == nil {
t.Errorf("Expected error but none received. Args: %q", test.Args)
}
return
}
if err != nil {
t.Errorf("Received unexpected error. Field: %s, Args: %q, Error: %s", test.Field, test.Args, err)
return
}
equal, fieldval := CompareField(spec, test.Field, test.Value)
if !equal {
t.Errorf("Decoded value is incorrect. Field: %s, Args: %q, Expected: %#v, Received: %#v", test.Field, test.Args, test.Value, fieldval)
return
}
}
func TestBogusDefaultField(t *testing.T) {
var spec = &struct {
BogusDefault int `option:"b" description:"An int field with a bogus default" default:"bogus"`
}{}
defer func() {
r := recover()
if r != nil {
switch r.(type) {
case commandError, optionError:
// Intentional No-op
default:
panic(r)
}
}
}()
cmd := New("test", spec)
cmd.Decode([]string{})
t.Errorf("Expected decoding to panic on bogus default value, but this didn't happen.")
}
/*
* Generic field test helpers
*/
type fieldTest struct {
Args []string
Valid bool
Field string
Value interface{}
SkipReason string
}
func runFieldTest(t *testing.T, spec interface{}, test fieldTest) {
if test.SkipReason != "" {
t.Logf("Test skipped. Args: %q, Field: %s, Reason: %s", test.Args, test.Field, test.SkipReason)
return
}
cmd := New("test", spec)
_, _, err := cmd.Decode(test.Args)
if !test.Valid {
if err == nil {
t.Errorf("Expected error but none received. Args: %q", test.Args)
}
return
}
if err != nil {
t.Errorf("Received unexpected error. Field: %s, Args: %q, Error: %s", test.Field, test.Args, err)
return
}
equal, fieldval := CompareField(spec, test.Field, test.Value)
if !equal {
t.Errorf("Decoded value is incorrect. Field: %s, Args: %q, Expected: %#v, Received: %#v", test.Field, test.Args, test.Value, fieldval)
return
}
}
/*
* Test option name variations
*/
type optNameSpec struct {
Bool bool `flag:" b, bool" description:"A bool flag"`
Accumulator int `flag:"a,acc,A, accum" description:"An accumulator field"`
Int int `option:"int, I" description:"An int field"`
Float float32 `option:" float,F, FloaT, f " description:"A float field"`
}
var optNameTests = []fieldTest{
// Bool Flag
{Args: []string{"-b"}, Valid: true, Field: "Bool", Value: true},
{Args: []string{"--bool"}, Valid: true, Field: "Bool", Value: true},
// Accumulator Flag
{Args: []string{"-A", "--accum", "-a", "--acc", "-Aa", "-aA"}, Valid: true, Field: "Accumulator", Value: 8},
// Int Option
{Args: []string{"-I2"}, Valid: true, Field: "Int", Value: 2},
{Args: []string{"-I", "2"}, Valid: true, Field: "Int", Value: 2},
{Args: []string{"--int", "2"}, Valid: true, Field: "Int", Value: 2},
{Args: []string{"--int=2"}, Valid: true, Field: "Int", Value: 2},
// Float Option
{Args: []string{"-F2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"-F2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"-F", "2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"-F", "2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"-f2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"-f2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"-f", "2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"-f", "2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"--FloaT", "2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"--FloaT", "2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"--FloaT=2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"--FloaT=2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"--float", "2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"--float", "2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
{Args: []string{"--float=2"}, Valid: true, Field: "Float", Value: float32(2.0)},
{Args: []string{"--float=2.5"}, Valid: true, Field: "Float", Value: float32(2.5)},
}
func TestOptionNames(t *testing.T) {
for _, test := range optNameTests {
spec := &optNameSpec{}
runFieldTest(t, spec, test)
}
}
/*
* Test flag fields
*/
type flagFieldSpec struct {
Bool bool `flag:"b, bool" description:"A bool flag"`
Accumulator int `flag:"a, acc" description:"An accumulator flag"`
}
var flagTests = []fieldTest{
// Bool flag
{Args: []string{}, Valid: true, Field: "Bool", Value: false},
{Args: []string{"-b"}, Valid: true, Field: "Bool", Value: true},
{Args: []string{"--bool"}, Valid: true, Field: "Bool", Value: true},
{Args: []string{"-b", "-b"}, Valid: false},
{Args: []string{"-b2"}, Valid: false},
{Args: []string{"--bool=2"}, Valid: false},
// Accumulator flag
{Args: []string{}, Valid: true, Field: "Accumulator", Value: 0},
{Args: []string{"-a"}, Valid: true, Field: "Accumulator", Value: 1},
{Args: []string{"-a", "-a"}, Valid: true, Field: "Accumulator", Value: 2},
{Args: []string{"-aaa"}, Valid: true, Field: "Accumulator", Value: 3},
{Args: []string{"--acc", "-a"}, Valid: true, Field: "Accumulator", Value: 2},
{Args: []string{"-a", "--acc", "-aa"}, Valid: true, Field: "Accumulator", Value: 4},
{Args: []string{"-a3"}, Valid: false},
{Args: []string{"--acc=3"}, Valid: false},
}
func TestFlagFields(t *testing.T) {
for _, test := range flagTests {
spec := &flagFieldSpec{}
runFieldTest(t, spec, test)
}
}
/*
* Test map and slice field types
*/
type mapSliceFieldSpec struct {
StringSlice []string `option:"s" description:"A string slice option" placeholder:"STRINGSLICE"`
StringMap map[string]string `option:"m" description:"A map of strings option" placeholder:"KEY=VALUE"`
}
var mapSliceFieldTests = []fieldTest{
// String Slice
{Args: []string{"-s", "1", "-s", "-1", "-s", "+1"}, Valid: true, Field: "StringSlice", Value: []string{"1", "-1", "+1"}},
{Args: []string{"-s", " a b", "-s", "\n", "-s", "\t"}, Valid: true, Field: "StringSlice", Value: []string{" a b", "\n", "\t"}},
{Args: []string{"-s", "日本", "-s", "-日本", "-s", "--日本"}, Valid: true, Field: "StringSlice", Value: []string{"日本", "-日本", "--日本"}},
{Args: []string{"-s", "1"}, Valid: true, Field: "StringSlice", Value: []string{"1"}},
{Args: []string{"-s", "-1"}, Valid: true, Field: "StringSlice", Value: []string{"-1"}},
{Args: []string{"-s", "+1"}, Valid: true, Field: "StringSlice", Value: []string{"+1"}},
{Args: []string{"-s", "1.0"}, Valid: true, Field: "StringSlice", Value: []string{"1.0"}},
{Args: []string{"-s", "0x01"}, Valid: true, Field: "StringSlice", Value: []string{"0x01"}},
{Args: []string{"-s", "-"}, Valid: true, Field: "StringSlice", Value: []string{"-"}},
{Args: []string{"-s", "-a"}, Valid: true, Field: "StringSlice", Value: []string{"-a"}},
{Args: []string{"-s", "--"}, Valid: true, Field: "StringSlice", Value: []string{"--"}},
{Args: []string{"-s", "--a"}, Valid: true, Field: "StringSlice", Value: []string{"--a"}},
{Args: []string{"-s", ""}, Valid: true, Field: "StringSlice", Value: []string{""}},
{Args: []string{"-s", " "}, Valid: true, Field: "StringSlice", Value: []string{" "}},
{Args: []string{"-s", " a"}, Valid: true, Field: "StringSlice", Value: []string{" a"}},
{Args: []string{"-s", "a "}, Valid: true, Field: "StringSlice", Value: []string{"a "}},
{Args: []string{"-s", "a b "}, Valid: true, Field: "StringSlice", Value: []string{"a b "}},
{Args: []string{"-s", " a b"}, Valid: true, Field: "StringSlice", Value: []string{" a b"}},
{Args: []string{"-s", "\n"}, Valid: true, Field: "StringSlice", Value: []string{"\n"}},
{Args: []string{"-s", "\t"}, Valid: true, Field: "StringSlice", Value: []string{"\t"}},
{Args: []string{"-s", "日本"}, Valid: true, Field: "StringSlice", Value: []string{"日本"}},
{Args: []string{"-s", "-日本"}, Valid: true, Field: "StringSlice", Value: []string{"-日本"}},
{Args: []string{"-s", "--日本"}, Valid: true, Field: "StringSlice", Value: []string{"--日本"}},
{Args: []string{"-s", " 日本"}, Valid: true, Field: "StringSlice", Value: []string{" 日本"}},
{Args: []string{"-s", "日本 "}, Valid: true, Field: "StringSlice", Value: []string{"日本 "}},
{Args: []string{"-s", "日 本"}, Valid: true, Field: "StringSlice", Value: []string{"日 本"}},
{Args: []string{"-s", "A relatively long string to make sure we aren't doing any silly truncation anywhere, since that would be bad..."}, Valid: true, Field: "StringSlice", Value: []string{"A relatively long string to make sure we aren't doing any silly truncation anywhere, since that would be bad..."}},
{Args: []string{"-s"}, Valid: false},
// String Map
{Args: []string{"-m", "a=b"}, Valid: true, Field: "StringMap", Value: map[string]string{"a": "b"}},
{Args: []string{"-m", "a=b=c"}, Valid: true, Field: "StringMap", Value: map[string]string{"a": "b=c"}},
{Args: []string{"-m", "a=b "}, Valid: true, Field: "StringMap", Value: map[string]string{"a": "b "}},
{Args: []string{"-m", "a= b"}, Valid: true, Field: "StringMap", Value: map[string]string{"a": " b"}},
{Args: []string{"-m", "a =b"}, Valid: true, Field: "StringMap", Value: map[string]string{"a ": "b"}},
{Args: []string{"-m", " a=b"}, Valid: true, Field: "StringMap", Value: map[string]string{" a": "b"}},
{Args: []string{"-m", " a=b "}, Valid: true, Field: "StringMap", Value: map[string]string{" a": "b "}},
{Args: []string{"-m", "a = b "}, Valid: true, Field: "StringMap", Value: map[string]string{"a ": " b "}},
{Args: []string{"-m", " a = b "}, Valid: true, Field: "StringMap", Value: map[string]string{" a ": " b "}},
{Args: []string{"-m", "a=b", "-m", "a=c"}, Valid: true, Field: "StringMap", Value: map[string]string{"a": "c"}},
{Args: []string{"-m", "a=b", "-m", "c=d"}, Valid: true, Field: "StringMap", Value: map[string]string{"a": "b", "c": "d"}},
{Args: []string{"-m", "日=本", "-m", "-日=本", "-m", "--日=--本"}, Valid: true, Field: "StringMap", Value: map[string]string{"日": "本", "-日": "本", "--日": "--本"}},
{Args: []string{"-m", "a", "=b"}, Valid: false},
{Args: []string{"-m", "a", "b"}, Valid: false},
{Args: []string{"-m", "foo"}, Valid: false},
{Args: []string{"-m", "a:b"}, Valid: false},
{Args: []string{"-m"}, Valid: false},
}
func TestMapSliceFields(t *testing.T) {
for _, test := range mapSliceFieldTests {
spec := &mapSliceFieldSpec{}
runFieldTest(t, spec, test)
}
}
/*
* Test io field types
*/
const ioTestText = "test IO"
type ioFieldSpec struct {
Reader io.Reader `option:"reader" description:"An io.Reader input option"`
ReadCloser io.ReadCloser `option:"readcloser" description:"An io.ReadCloser input option"`
Writer io.Writer `option:"writer" description:"An io.Writer output option"`
WriteCloser io.WriteCloser `option:"writecloser" description:"An io.WriteCloser output option"`
}
func (r *ioFieldSpec) PerformIO() error {
input := []io.Reader{r.Reader, r.ReadCloser}
for _, in := range input {
if in != nil {
bytes, err := ioutil.ReadAll(in)
if err != nil {
return err
}
if string(bytes) != ioTestText {
return fmt.Errorf("Expected to read %q. Read %q instead.", ioTestText, string(bytes))
}
closer, ok := in.(io.Closer)
if ok {
err = closer.Close()
if err != nil {
return err
}
}
}
}
output := []io.Writer{r.Writer, r.WriteCloser}
for _, out := range output {
if out != nil {
_, err := io.WriteString(out, ioTestText)
if err != nil {
return err
}
closer, ok := out.(io.Closer)
if ok {
err = closer.Close()
if err != nil {
return err
}
}
}
}
return nil
}
type ioFieldTest struct {
Args []string
Valid bool
Field string
InFiles []string
OutFiles []string
SkipReason string
}
var ioFieldTests = []ioFieldTest{
// No-op
{Args: []string{}, Valid: true, InFiles: []string{}, OutFiles: []string{}},
// io.Reader
{Args: []string{"--reader", "-"}, Valid: true, Field: "Reader", InFiles: []string{"stdin"}, OutFiles: []string{}},
{Args: []string{"--reader", "infile"}, Valid: true, Field: "Reader", InFiles: []string{"infile"}, OutFiles: []string{}},
{Args: []string{"--reader", "bogus/infile"}, Valid: false},
{Args: []string{"--reader", ""}, Valid: false},
{Args: []string{"--reader", "infile1", "--reader", "intput2"}, Valid: false},
{Args: []string{"--reader", "-", "--reader", "intput"}, Valid: false},
{Args: []string{"--reader", "infile", "--reader", "-"}, Valid: false},
{Args: []string{"--reader"}, Valid: false},
// io.ReadCloser
{Args: []string{"--readcloser", "-"}, Valid: true, Field: "ReadCloser", InFiles: []string{"stdin"}, OutFiles: []string{}},
{Args: []string{"--readcloser", "infile"}, Valid: true, Field: "ReadCloser", InFiles: []string{"infile"}, OutFiles: []string{}},
{Args: []string{"--readcloser", "bogus/infile"}, Valid: false},
{Args: []string{"--readcloser", ""}, Valid: false},
{Args: []string{"--readcloser", "infile1", "--readcloser", "intput2"}, Valid: false},
{Args: []string{"--readcloser", "-", "--readcloser", "intput"}, Valid: false},
{Args: []string{"--readcloser", "infile", "--readcloser", "-"}, Valid: false},
{Args: []string{"--readcloser"}, Valid: false},
// io.Writer
{Args: []string{"--writer", "-"}, Valid: true, Field: "Writer", InFiles: []string{}, OutFiles: []string{"stdout"}},
{Args: []string{"--writer", "outfile"}, Valid: true, Field: "Writer", InFiles: []string{}, OutFiles: []string{"outfile"}},
{Args: []string{"--writer", ""}, Valid: false},
{Args: []string{"--writer", "bogus/outfile"}, Valid: false},
{Args: []string{"--writer", "outfile1", "--writer", "outfile2"}, Valid: false},
{Args: []string{"--writer", "-", "--writer", "outfile"}, Valid: false},
{Args: []string{"--writer", "outfile", "--writer", "-"}, Valid: false},
{Args: []string{"--writer"}, Valid: false},
// io.WriteCloser
{Args: []string{"--writecloser", "-"}, Valid: true, Field: "WriteCloser", InFiles: []string{}, OutFiles: []string{"stdout"}},
{Args: []string{"--writecloser", "outfile"}, Valid: true, Field: "WriteCloser", InFiles: []string{}, OutFiles: []string{"outfile"}},
{Args: []string{"--writecloser", ""}, Valid: false},
{Args: []string{"--writecloser", "bogus/outfile"}, Valid: false},
{Args: []string{"--writecloser", "outfile1", "--writecloser", "outfile2"}, Valid: false},
{Args: []string{"--writecloser", "-", "--writecloser", "outfile"}, Valid: false},
{Args: []string{"--writecloser", "outfile", "--writecloser", "-"}, Valid: false},
{Args: []string{"--writecloser"}, Valid: false},
}
func TestIOFields(t *testing.T) {
for _, test := range ioFieldTests {
spec := &ioFieldSpec{}
runIOFieldTest(t, spec, test)
}
}
func runIOFieldTest(t *testing.T, spec *ioFieldSpec, test ioFieldTest) {
if test.SkipReason != "" {
t.Logf("Test skipped. Args: %q, Field: %s, Reason: %s", test.Args, test.Field, test.SkipReason)
return
}
realin, realout := os.Stdin, os.Stdout
defer restoreStdinStdout(realin, realout)
realdir, err := os.Getwd()
if err != nil {
t.Errorf("Failed to get working dir. Args: %q, Field: %s, Error: %s", test.Args, test.Field, err)
return
}
defer restoreWorkingDir(realdir)
err = setupIOFieldTest(test)
if err != nil {
t.Errorf("Failed to setup test. Args: %q, Field: %s, Error: %s", test.Args, test.Field, err)
return
}
cmd := New("test", spec)
_, _, err = cmd.Decode(test.Args)
if !test.Valid {
if err == nil {
t.Errorf("Expected error but none received. Args: %q", test.Args)
}
return
}
if err != nil {
t.Errorf("Received unexpected decode error. Args: %q, Field: %s, Error: %s", test.Args, test.Field, err)
return
}
err = validateIOFieldTest(spec, test)
if err != nil {
t.Errorf("Validation failed during IO field test. Args: %q, Field: %s, Error: %s", test.Args, test.Field, err)
return
}
}
func restoreStdinStdout(stdin *os.File, stdout *os.File) {
os.Stdin = stdin
os.Stdout = stdout
}
func restoreWorkingDir(dir string) {
err := os.Chdir(dir)
if err != nil {
panic(fmt.Sprintf("Failed to restore working dir. Dir: %q, Error: %s", dir, err))
}
}
func setupIOFieldTest(test ioFieldTest) error {
tmpdir, err := ioutil.TempDir("", "writ-iofieldtest")
if err != nil {
return err
}
err = os.Chdir(tmpdir)
if err != nil {
return err
}
for _, name := range test.InFiles {
f, err := os.Create(name)
if err != nil {
return err
}
_, err = io.WriteString(f, ioTestText)
if err != nil {
return err
}
err = f.Close()
if err != nil {
return err
}
if name == "stdin" {
in, err := os.Open(name)
if err != nil {
return err
}
os.Stdin = in
}
}
for _, name := range test.OutFiles {
if name == "stdout" {
out, err := os.Create(name)
if err != nil {
return err
}
os.Stdout = out
}
}
return nil
}
func validateIOFieldTest(spec *ioFieldSpec, test ioFieldTest) error {
err := spec.PerformIO()
if err != nil {
return err
}
for _, name := range test.OutFiles {
in, err := os.Open(name)
if err != nil {
return err
}
bytes, err := ioutil.ReadAll(in)
if err != nil {
return err
}
if string(bytes) != ioTestText {
return fmt.Errorf("Expected to read %q. Read %q instead.", ioTestText, string(bytes))
}
err = in.Close()
if err != nil {
return err
}
}
return nil
}
/*
* Test custom flag and option decoders
*/
type customTestFlag struct {
val *bool
}
func (d customTestFlag) Decode(arg string) error {
*d.val = true
return nil
}
type customTestFlagPtr struct {
val bool
}
func (d *customTestFlagPtr) Decode(arg string) error {
d.val = true
return nil
}
type customTestOption struct {
val *string
}
func (d customTestOption) Decode(arg string) error {
if strings.HasPrefix(arg, "foo") {
*d.val = arg
return nil
}
return fmt.Errorf("customTestOption values must begin with foo")
}
type customTestOptionPtr struct {
val string
}
func (d *customTestOptionPtr) Decode(arg string) error {
if strings.HasPrefix(arg, "foo") {
d.val = arg
return nil
}
return fmt.Errorf("customTestOptionPtr values must begin with foo")
}
type customDecoderFieldSpec struct {
CustomFlag customTestFlag `flag:"flag" description:"a custom flag field"`
CustomFlagPtr customTestFlagPtr `flag:"flagptr" description:"a custom flag field with pointer receiver"`
CustomOption customTestOption `option:"opt" description:"a custom option field"`
CustomOptionPtr customTestOptionPtr `option:"optptr" description:"a custom option field with pointer receiver"`
}
var trueval = true
var foobarval = "foobar"
var customDecoderFieldTests = []fieldTest{
// Custom flag
{Args: []string{"--flag"}, Valid: true, Field: "CustomFlag", Value: customTestFlag{val: &trueval}},
{Args: []string{"--flag", "--flag"}, Valid: false}, // Plural must be set explicitly
// Custom flag with pointer receiver
{Args: []string{"--flagptr"}, Valid: true, Field: "CustomFlagPtr", Value: customTestFlagPtr{val: true}},
{Args: []string{"--flagptr", "--flagptr"}, Valid: false}, // Plural must be set explicitly
// Custom option
{Args: []string{"--opt", "foobar"}, Valid: true, Field: "CustomOption", Value: customTestOption{val: &foobarval}},
{Args: []string{"--opt=foobar"}, Valid: true, Field: "CustomOption", Value: customTestOption{val: &foobarval}},
{Args: []string{"-opt=puppies"}, Valid: false},
{Args: []string{"-opt", "puppies"}, Valid: false},
{Args: []string{"--opt"}, Valid: false},
{Args: []string{"--opt", "foobar", "-opt", "foobar"}, Valid: false}, // Plural must be set explicitly
// Custom option with pointer receiver
{Args: []string{"--optptr", "foobar"}, Valid: true, Field: "CustomOptionPtr", Value: customTestOptionPtr{val: "foobar"}},
{Args: []string{"--optptr=foobar"}, Valid: true, Field: "CustomOptionPtr", Value: customTestOptionPtr{val: "foobar"}},
{Args: []string{"-optptr=puppies"}, Valid: false},
{Args: []string{"-optptr", "puppies"}, Valid: false},
{Args: []string{"--optptr"}, Valid: false},
{Args: []string{"--optptr", "foobar", "-optptr", "foobar"}, Valid: false}, // Plural must be set explicitly
}
func TestCustomDecoderFields(t *testing.T) {
for _, test := range customDecoderFieldTests {
var flagval bool
var optval string
spec := &customDecoderFieldSpec{
CustomFlag: customTestFlag{&flagval},
CustomOption: customTestOption{&optval},
}
runFieldTest(t, spec, test)
}
}
/*
* Test basic field types
*/
type basicFieldSpec struct {
Int int `option:"int" description:"An int option" placeholder:"INT"`
Int8 int8 `option:"int8" description:"An int8 option" placeholder:"INT8"`
Int16 int16 `option:"int16" description:"An int16 option" placeholder:"INT16"`
Int32 int32 `option:"int32" description:"An int32 option" placeholder:"INT32"`
Int64 int64 `option:"int64" description:"An int64 option" placeholder:"INT64"`
Uint uint `option:"uint" description:"A uint option" placeholder:"UINT"`
Uint8 uint8 `option:"uint8" description:"A uint8 option" placeholder:"UINT8"`
Uint16 uint16 `option:"uint16" description:"A uint16 option" placeholder:"UINT16"`
Uint32 uint32 `option:"uint32" description:"A uint32 option" placeholder:"UINT32"`
Uint64 uint64 `option:"uint64" description:"A uint64 option" placeholder:"UINT64"`
Float32 float32 `option:"float32" description:"A float32 option" placeholder:"FLOAT32"`
Float64 float64 `option:"float64" description:"A float64 option" placeholder:"FLOAT64"`
String string `option:"string" description:"A string option" placeholder:"STRING"`
}
var basicFieldTests = []fieldTest{
// String
{Args: []string{"--string", "1"}, Valid: true, Field: "String", Value: "1"},
{Args: []string{"--string", "-1"}, Valid: true, Field: "String", Value: "-1"},
{Args: []string{"--string", "+1"}, Valid: true, Field: "String", Value: "+1"},
{Args: []string{"--string", "1.0"}, Valid: true, Field: "String", Value: "1.0"},
{Args: []string{"--string", "0x01"}, Valid: true, Field: "String", Value: "0x01"},
{Args: []string{"--string", "-"}, Valid: true, Field: "String", Value: "-"},
{Args: []string{"--string", "-a"}, Valid: true, Field: "String", Value: "-a"},
{Args: []string{"--string", "--"}, Valid: true, Field: "String", Value: "--"},
{Args: []string{"--string", "--a"}, Valid: true, Field: "String", Value: "--a"},
{Args: []string{"--string", ""}, Valid: true, Field: "String", Value: ""},
{Args: []string{"--string", " "}, Valid: true, Field: "String", Value: " "},
{Args: []string{"--string", " a"}, Valid: true, Field: "String", Value: " a"},
{Args: []string{"--string", "a "}, Valid: true, Field: "String", Value: "a "},
{Args: []string{"--string", "a b "}, Valid: true, Field: "String", Value: "a b "},
{Args: []string{"--string", " a b"}, Valid: true, Field: "String", Value: " a b"},
{Args: []string{"--string", "\n"}, Valid: true, Field: "String", Value: "\n"},
{Args: []string{"--string", "\t"}, Valid: true, Field: "String", Value: "\t"},
{Args: []string{"--string", "日本"}, Valid: true, Field: "String", Value: "日本"},
{Args: []string{"--string", "-日本"}, Valid: true, Field: "String", Value: "-日本"},
{Args: []string{"--string", "--日本"}, Valid: true, Field: "String", Value: "--日本"},
{Args: []string{"--string", " 日本"}, Valid: true, Field: "String", Value: " 日本"},