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package cli
import (
"bytes"
"context"
"encoding/json"
"errors"
"flag"
"fmt"
"io"
"net/mail"
"os"
"sort"
"strconv"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var (
lastExitCode = 0
fakeOsExiter = func(rc int) {
lastExitCode = rc
}
fakeErrWriter = &bytes.Buffer{}
)
func init() {
OsExiter = fakeOsExiter
ErrWriter = fakeErrWriter
}
type opCounts struct {
Total, ShellComplete, OnUsageError, Before, CommandNotFound, Action, After, SubCommand int
}
func buildExtendedTestCommand() *Command {
cmd := buildMinimalTestCommand()
cmd.Name = "greet"
cmd.Flags = []Flag{
&StringFlag{
Name: "socket",
Aliases: []string{"s"},
Usage: "some 'usage' text",
Value: "value",
TakesFile: true,
},
&StringFlag{Name: "flag", Aliases: []string{"fl", "f"}},
&BoolFlag{
Name: "another-flag",
Aliases: []string{"b"},
Usage: "another usage text",
Sources: EnvVars("EXAMPLE_VARIABLE_NAME"),
},
&BoolFlag{
Name: "hidden-flag",
Hidden: true,
},
}
cmd.Commands = []*Command{{
Aliases: []string{"c"},
Flags: []Flag{
&StringFlag{
Name: "flag",
Aliases: []string{"fl", "f"},
TakesFile: true,
},
&BoolFlag{
Name: "another-flag",
Aliases: []string{"b"},
Usage: "another usage text",
},
},
Name: "config",
Usage: "another usage test",
Commands: []*Command{{
Aliases: []string{"s", "ss"},
Flags: []Flag{
&StringFlag{Name: "sub-flag", Aliases: []string{"sub-fl", "s"}},
&BoolFlag{
Name: "sub-command-flag",
Aliases: []string{"s"},
Usage: "some usage text",
},
},
Name: "sub-config",
Usage: "another usage test",
}},
}, {
Aliases: []string{"i", "in"},
Name: "info",
Usage: "retrieve generic information",
}, {
Name: "some-command",
}, {
Name: "hidden-command",
Hidden: true,
Flags: []Flag{
&BoolFlag{
Name: "completable",
},
},
}, {
Aliases: []string{"u"},
Flags: []Flag{
&StringFlag{
Name: "flag",
Aliases: []string{"fl", "f"},
TakesFile: true,
},
&BoolFlag{
Name: "another-flag",
Aliases: []string{"b"},
Usage: "another usage text",
},
},
Name: "usage",
Usage: "standard usage text",
UsageText: `
Usage for the usage text
- formatted: Based on the specified ConfigMap and summon secrets.yml
- list: Inspect the environment for a specific process running on a Pod
- for_effect: Compare 'namespace' environment with 'local'
` + "```" + `
func() { ... }
` + "```" + `
Should be a part of the same code block
`,
Commands: []*Command{{
Aliases: []string{"su"},
Flags: []Flag{
&BoolFlag{
Name: "sub-command-flag",
Aliases: []string{"s"},
Usage: "some usage text",
},
},
Name: "sub-usage",
Usage: "standard usage text",
UsageText: "Single line of UsageText",
}},
}}
cmd.UsageText = "app [first_arg] [second_arg]"
cmd.Description = `Description of the application.`
cmd.Usage = "Some app"
cmd.Authors = []any{
"Harrison <harrison@lolwut.example.com>",
&mail.Address{Name: "Oliver Allen", Address: "oliver@toyshop.com"},
}
return cmd
}
func TestCommandFlagParsing(t *testing.T) {
cases := []struct {
testArgs []string
skipFlagParsing bool
useShortOptionHandling bool
expectedErr string
}{
// Test normal "not ignoring flags" flow
{testArgs: []string{"test-cmd", "-break", "blah", "blah"}, skipFlagParsing: false, useShortOptionHandling: false, expectedErr: "flag provided but not defined: -break"},
{testArgs: []string{"test-cmd", "blah", "blah"}, skipFlagParsing: true, useShortOptionHandling: false}, // Test SkipFlagParsing without any args that look like flags
{testArgs: []string{"test-cmd", "blah", "-break"}, skipFlagParsing: true, useShortOptionHandling: false}, // Test SkipFlagParsing with random flag arg
{testArgs: []string{"test-cmd", "blah", "-help"}, skipFlagParsing: true, useShortOptionHandling: false}, // Test SkipFlagParsing with "special" help flag arg
{testArgs: []string{"test-cmd", "blah", "-h"}, skipFlagParsing: false, useShortOptionHandling: true, expectedErr: "No help topic for 'blah'"}, // Test UseShortOptionHandling
}
for _, c := range cases {
t.Run(strings.Join(c.testArgs, " "), func(t *testing.T) {
cmd := &Command{
Writer: io.Discard,
Name: "test-cmd",
Aliases: []string{"tc"},
Usage: "this is for testing",
Description: "testing",
Action: func(context.Context, *Command) error { return nil },
SkipFlagParsing: c.skipFlagParsing,
}
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
t.Cleanup(cancel)
r := require.New(t)
err := cmd.Run(ctx, c.testArgs)
if c.expectedErr != "" {
r.EqualError(err, c.expectedErr)
} else {
r.NoError(err)
}
})
}
}
func TestParseAndRunShortOpts(t *testing.T) {
testCases := []struct {
testArgs *stringSliceArgs
expectedErr string
expectedArgs Args
}{
{testArgs: &stringSliceArgs{v: []string{"test", "-a"}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-c", "arg1", "arg2"}}, expectedArgs: &stringSliceArgs{v: []string{"arg1", "arg2"}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-f"}}, expectedArgs: &stringSliceArgs{v: []string{}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-ac", "--fgh"}}, expectedArgs: &stringSliceArgs{v: []string{}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-af"}}, expectedArgs: &stringSliceArgs{v: []string{}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-cf"}}, expectedArgs: &stringSliceArgs{v: []string{}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-acf"}}, expectedArgs: &stringSliceArgs{v: []string{}}},
{testArgs: &stringSliceArgs{v: []string{"test", "--acf"}}, expectedErr: "flag provided but not defined: -acf"},
{testArgs: &stringSliceArgs{v: []string{"test", "-invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "-acf", "-invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "--invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "-acf", "--invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "-acf", "arg1", "-invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "-acf", "arg1", "--invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "-acfi", "not-arg", "arg1", "-invalid"}}, expectedErr: "flag provided but not defined: -invalid"},
{testArgs: &stringSliceArgs{v: []string{"test", "-i", "ivalue"}}, expectedArgs: &stringSliceArgs{v: []string{}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-i", "ivalue", "arg1"}}, expectedArgs: &stringSliceArgs{v: []string{"arg1"}}},
{testArgs: &stringSliceArgs{v: []string{"test", "-i"}}, expectedErr: "flag needs an argument: -i"},
}
for _, tc := range testCases {
t.Run(strings.Join(tc.testArgs.v, " "), func(t *testing.T) {
state := map[string]Args{"args": nil}
cmd := &Command{
Name: "test",
Usage: "this is for testing",
Description: "testing",
Action: func(_ context.Context, cmd *Command) error {
state["args"] = cmd.Args()
return nil
},
UseShortOptionHandling: true,
Writer: io.Discard,
Flags: []Flag{
&BoolFlag{Name: "abc", Aliases: []string{"a"}},
&BoolFlag{Name: "cde", Aliases: []string{"c"}},
&BoolFlag{Name: "fgh", Aliases: []string{"f"}},
&StringFlag{Name: "ijk", Aliases: []string{"i"}},
},
}
err := cmd.Run(buildTestContext(t), tc.testArgs.Slice())
r := require.New(t)
if tc.expectedErr == "" {
r.NoError(err)
} else {
r.ErrorContains(err, tc.expectedErr)
}
if tc.expectedArgs == nil {
if state["args"] != nil {
r.Len(state["args"].Slice(), 0)
} else {
r.Nil(state["args"])
}
} else {
r.Equal(tc.expectedArgs, state["args"])
}
})
}
}
func TestCommand_Run_DoesNotOverwriteErrorFromBefore(t *testing.T) {
cmd := &Command{
Name: "bar",
Before: func(context.Context, *Command) (context.Context, error) {
return nil, fmt.Errorf("before error")
},
After: func(context.Context, *Command) error {
return fmt.Errorf("after error")
},
Writer: io.Discard,
}
err := cmd.Run(buildTestContext(t), []string{"bar"})
require.ErrorContains(t, err, "before error")
require.ErrorContains(t, err, "after error")
}
func TestCommand_Run_BeforeSavesMetadata(t *testing.T) {
var receivedMsgFromAction string
var receivedMsgFromAfter string
cmd := &Command{
Name: "bar",
Before: func(ctx context.Context, cmd *Command) (context.Context, error) {
cmd.Metadata["msg"] = "hello world"
return nil, nil
},
Action: func(ctx context.Context, cmd *Command) error {
msg, ok := cmd.Metadata["msg"]
if !ok {
return errors.New("msg not found")
}
receivedMsgFromAction = msg.(string)
return nil
},
After: func(_ context.Context, cmd *Command) error {
msg, ok := cmd.Metadata["msg"]
if !ok {
return errors.New("msg not found")
}
receivedMsgFromAfter = msg.(string)
return nil
},
}
require.NoError(t, cmd.Run(buildTestContext(t), []string{"foo", "bar"}))
require.Equal(t, "hello world", receivedMsgFromAction)
require.Equal(t, "hello world", receivedMsgFromAfter)
}
func TestCommand_Run_BeforeReturnNewContext(t *testing.T) {
var receivedValFromAction, receivedValFromAfter string
type key string
bkey := key("bkey")
cmd := &Command{
Name: "bar",
Before: func(ctx context.Context, cmd *Command) (context.Context, error) {
return context.WithValue(ctx, bkey, "bval"), nil
},
Action: func(ctx context.Context, cmd *Command) error {
if val := ctx.Value(bkey); val == nil {
return errors.New("bkey value not found")
} else {
receivedValFromAction = val.(string)
}
return nil
},
After: func(ctx context.Context, cmd *Command) error {
if val := ctx.Value(bkey); val == nil {
return errors.New("bkey value not found")
} else {
receivedValFromAfter = val.(string)
}
return nil
},
}
require.NoError(t, cmd.Run(buildTestContext(t), []string{"foo", "bar"}))
require.Equal(t, "bval", receivedValFromAfter)
require.Equal(t, "bval", receivedValFromAction)
}
type ctxKey string
// ctxCollector is a small helper to collect context values.
type ctxCollector struct {
// keys are the keys to check the context for.
keys []ctxKey
// m maps from function name to context name to value.
m map[string]map[ctxKey]string
}
func (cc *ctxCollector) collect(ctx context.Context, fnName string) {
if cc.m == nil {
cc.m = make(map[string]map[ctxKey]string)
}
if _, ok := cc.m[fnName]; !ok {
cc.m[fnName] = make(map[ctxKey]string)
}
for _, k := range cc.keys {
if val := ctx.Value(k); val != nil {
cc.m[fnName][k] = val.(string)
}
}
}
func TestCommand_Run_BeforeReturnNewContextSubcommand(t *testing.T) {
bkey := ctxKey("bkey")
bkey2 := ctxKey("bkey2")
cc := &ctxCollector{keys: []ctxKey{bkey, bkey2}}
cmd := &Command{
Name: "bar",
Before: func(ctx context.Context, cmd *Command) (context.Context, error) {
return context.WithValue(ctx, bkey, "bval"), nil
},
After: func(ctx context.Context, cmd *Command) error {
cc.collect(ctx, "bar.After")
return nil
},
Commands: []*Command{
{
Name: "baz",
Before: func(ctx context.Context, cmd *Command) (context.Context, error) {
return context.WithValue(ctx, bkey2, "bval2"), nil
},
Action: func(ctx context.Context, cmd *Command) error {
cc.collect(ctx, "baz.Action")
return nil
},
After: func(ctx context.Context, cmd *Command) error {
cc.collect(ctx, "baz.After")
return nil
},
},
},
}
require.NoError(t, cmd.Run(buildTestContext(t), []string{"bar", "baz"}))
expected := map[string]map[ctxKey]string{
"bar.After": {
bkey: "bval",
bkey2: "bval2",
},
"baz.Action": {
bkey: "bval",
bkey2: "bval2",
},
"baz.After": {
bkey: "bval",
bkey2: "bval2",
},
}
require.Equal(t, expected, cc.m)
}
func TestCommand_Run_FlagActionContext(t *testing.T) {
bkey := ctxKey("bkey")
bkey2 := ctxKey("bkey2")
cc := &ctxCollector{keys: []ctxKey{bkey, bkey2}}
cmd := &Command{
Name: "bar",
Before: func(ctx context.Context, cmd *Command) (context.Context, error) {
return context.WithValue(ctx, bkey, "bval"), nil
},
Flags: []Flag{
&StringFlag{
Name: "foo",
Action: func(ctx context.Context, cmd *Command, _ string) error {
cc.collect(ctx, "bar.foo.Action")
return nil
},
},
},
Commands: []*Command{
{
Name: "baz",
Before: func(ctx context.Context, cmd *Command) (context.Context, error) {
return context.WithValue(ctx, bkey2, "bval2"), nil
},
Flags: []Flag{
&StringFlag{
Name: "goo",
Action: func(ctx context.Context, cmd *Command, _ string) error {
cc.collect(ctx, "baz.goo.Action")
return nil
},
},
},
Action: func(ctx context.Context, cmd *Command) error {
return nil
},
},
},
}
require.NoError(t, cmd.Run(buildTestContext(t), []string{"bar", "--foo", "value", "baz", "--goo", "value"}))
expected := map[string]map[ctxKey]string{
"bar.foo.Action": {
bkey: "bval",
bkey2: "bval2",
},
"baz.goo.Action": {
bkey: "bval",
bkey2: "bval2",
},
}
require.Equal(t, expected, cc.m)
}
func TestCommand_OnUsageError_hasCommandContext(t *testing.T) {
cmd := &Command{
Name: "bar",
Flags: []Flag{
&Int64Flag{Name: "flag"},
},
OnUsageError: func(_ context.Context, cmd *Command, err error, _ bool) error {
return fmt.Errorf("intercepted in %s: %s", cmd.Name, err.Error())
},
}
err := cmd.Run(buildTestContext(t), []string{"bar", "--flag=wrong"})
assert.ErrorContains(t, err, "intercepted in bar")
}
func TestCommand_OnUsageError_WithWrongFlagValue(t *testing.T) {
cmd := &Command{
Name: "bar",
Flags: []Flag{
&Int64Flag{Name: "flag"},
},
OnUsageError: func(_ context.Context, _ *Command, err error, _ bool) error {
assert.ErrorContains(t, err, "strconv.ParseInt: parsing \"wrong\"")
return errors.New("intercepted: " + err.Error())
},
}
err := cmd.Run(buildTestContext(t), []string{"bar", "--flag=wrong"})
assert.ErrorContains(t, err, "intercepted: invalid value \"wrong\" for flag -flag: strconv.ParseInt: parsing \"wrong\"")
}
func TestCommand_OnUsageError_WithSubcommand(t *testing.T) {
cmd := &Command{
Name: "bar",
Commands: []*Command{
{
Name: "baz",
},
},
Flags: []Flag{
&Int64Flag{Name: "flag"},
},
OnUsageError: func(_ context.Context, _ *Command, err error, _ bool) error {
assert.ErrorContains(t, err, "parsing \"wrong\": invalid syntax")
return errors.New("intercepted: " + err.Error())
},
}
require.ErrorContains(t, cmd.Run(buildTestContext(t), []string{"bar", "--flag=wrong"}),
"intercepted: invalid value \"wrong\" for flag -flag: strconv.ParseInt: parsing \"wrong\": invalid syntax")
}
func TestCommand_Run_SubcommandsCanUseErrWriter(t *testing.T) {
cmd := &Command{
ErrWriter: io.Discard,
Name: "bar",
Usage: "this is for testing",
Commands: []*Command{
{
Name: "baz",
Usage: "this is for testing",
Action: func(_ context.Context, cmd *Command) error {
require.Equal(t, io.Discard, cmd.Root().ErrWriter)
return nil
},
},
},
}
require.NoError(t, cmd.Run(buildTestContext(t), []string{"bar", "baz"}))
}
func TestCommandSkipFlagParsing(t *testing.T) {
cases := []struct {
testArgs *stringSliceArgs
expectedArgs *stringSliceArgs
expectedErr error
}{
{testArgs: &stringSliceArgs{v: []string{"some-command", "some-arg", "--flag", "foo"}}, expectedArgs: &stringSliceArgs{v: []string{"some-arg", "--flag", "foo"}}, expectedErr: nil},
{testArgs: &stringSliceArgs{v: []string{"some-command", "some-arg", "--flag=foo"}}, expectedArgs: &stringSliceArgs{v: []string{"some-arg", "--flag=foo"}}, expectedErr: nil},
}
for _, c := range cases {
t.Run(strings.Join(c.testArgs.Slice(), " "), func(t *testing.T) {
var args Args
cmd := &Command{
SkipFlagParsing: true,
Name: "some-command",
Flags: []Flag{
&StringFlag{Name: "flag"},
},
Action: func(_ context.Context, cmd *Command) error {
args = cmd.Args()
return nil
},
Writer: io.Discard,
}
err := cmd.Run(buildTestContext(t), c.testArgs.Slice())
assert.Equal(t, c.expectedErr, err)
assert.Equal(t, c.expectedArgs, args)
})
}
}
func TestCommand_Run_CustomShellCompleteAcceptsMalformedFlags(t *testing.T) {
cases := []struct {
testArgs *stringSliceArgs
expectedOut string
}{
{testArgs: &stringSliceArgs{v: []string{"--undefined"}}, expectedOut: "found 0 args"},
{testArgs: &stringSliceArgs{v: []string{"--number"}}, expectedOut: "found 0 args"},
{testArgs: &stringSliceArgs{v: []string{"--number", "forty-two"}}, expectedOut: "found 0 args"},
{testArgs: &stringSliceArgs{v: []string{"--number", "42"}}, expectedOut: "found 0 args"},
{testArgs: &stringSliceArgs{v: []string{"--number", "42", "newArg"}}, expectedOut: "found 1 args"},
}
for _, c := range cases {
t.Run(strings.Join(c.testArgs.Slice(), " "), func(t *testing.T) {
out := &bytes.Buffer{}
cmd := &Command{
Writer: out,
EnableShellCompletion: true,
Name: "bar",
Usage: "this is for testing",
Flags: []Flag{
&Int64Flag{
Name: "number",
Usage: "A number to parse",
},
},
ShellComplete: func(_ context.Context, cmd *Command) {
fmt.Fprintf(cmd.Root().Writer, "found %[1]d args", cmd.NArg())
},
}
osArgs := &stringSliceArgs{v: []string{"bar"}}
osArgs.v = append(osArgs.v, c.testArgs.Slice()...)
osArgs.v = append(osArgs.v, completionFlag)
r := require.New(t)
r.NoError(cmd.Run(buildTestContext(t), osArgs.Slice()))
r.Equal(c.expectedOut, out.String())
})
}
}
func TestCommand_CanAddVFlagOnSubCommands(t *testing.T) {
cmd := &Command{
Version: "some version",
Writer: io.Discard,
Name: "foo",
Usage: "this is for testing",
Commands: []*Command{
{
Name: "bar",
Flags: []Flag{
&BoolFlag{Name: "v"},
},
},
},
}
err := cmd.Run(buildTestContext(t), []string{"foo", "bar"})
assert.NoError(t, err)
}
func TestCommand_VisibleSubcCommands(t *testing.T) {
subc1 := &Command{
Name: "subc1",
Usage: "subc1 command1",
}
subc3 := &Command{
Name: "subc3",
Usage: "subc3 command2",
}
cmd := &Command{
Name: "bar",
Usage: "this is for testing",
Commands: []*Command{
subc1,
{
Name: "subc2",
Usage: "subc2 command2",
Hidden: true,
},
subc3,
},
}
assert.Equal(t, cmd.VisibleCommands(), []*Command{subc1, subc3})
}
func TestCommand_VisibleFlagCategories(t *testing.T) {
cmd := &Command{
Name: "bar",
Usage: "this is for testing",
Flags: []Flag{
&StringFlag{
Name: "strd", // no category set
},
&StringFlag{
Name: "strd1", // no category set and also hidden
Hidden: true,
},
&Int64Flag{
Name: "intd",
Aliases: []string{"altd1", "altd2"},
Category: "cat1",
},
&StringFlag{
Name: "sfd",
Category: "cat2", // category set and hidden
Hidden: true,
},
},
MutuallyExclusiveFlags: []MutuallyExclusiveFlags{{
Category: "cat2",
Flags: [][]Flag{
{
&StringFlag{
Name: "mutex",
},
},
},
}},
}
cmd.MutuallyExclusiveFlags[0].propagateCategory()
vfc := cmd.VisibleFlagCategories()
require.Len(t, vfc, 3)
assert.Equal(t, vfc[0].Name(), "", "expected category name to be empty")
assert.Equal(t, vfc[0].Flags()[0].Names(), []string{"strd"})
assert.Equal(t, vfc[1].Name(), "cat1", "expected category name cat1")
require.Len(t, vfc[1].Flags(), 1, "expected flag category to have one flag")
assert.Equal(t, vfc[1].Flags()[0].Names(), []string{"intd", "altd1", "altd2"})
assert.Equal(t, vfc[2].Name(), "cat2", "expected category name cat2")
require.Len(t, vfc[2].Flags(), 1, "expected flag category to have one flag")
assert.Equal(t, vfc[2].Flags()[0].Names(), []string{"mutex"})
}
func TestCommand_RunSubcommandWithDefault(t *testing.T) {
cmd := &Command{
Version: "some version",
Name: "app",
DefaultCommand: "foo",
Commands: []*Command{
{
Name: "foo",
Action: func(context.Context, *Command) error {
return errors.New("should not run this subcommand")
},
},
{
Name: "bar",
Usage: "this is for testing",
Commands: []*Command{{}}, // some subcommand
Action: func(context.Context, *Command) error {
return nil
},
},
},
}
err := cmd.Run(buildTestContext(t), []string{"app", "bar"})
assert.NoError(t, err)
err = cmd.Run(buildTestContext(t), []string{"app"})
assert.EqualError(t, err, "should not run this subcommand")
}
func TestCommand_Run(t *testing.T) {
s := ""
cmd := &Command{
Action: func(_ context.Context, cmd *Command) error {
s = s + cmd.Args().First()
return nil
},
}
err := cmd.Run(buildTestContext(t), []string{"command", "foo"})
assert.NoError(t, err)
err = cmd.Run(buildTestContext(t), []string{"command", "bar"})
assert.NoError(t, err)
assert.Equal(t, s, "foobar")
}
var commandTests = []struct {
name string
expected bool
}{
{"foobar", true},
{"batbaz", true},
{"b", true},
{"f", true},
{"bat", false},
{"nothing", false},
}
func TestCommand_Command(t *testing.T) {
cmd := &Command{
Commands: []*Command{
{Name: "foobar", Aliases: []string{"f"}},
{Name: "batbaz", Aliases: []string{"b"}},
},
}
for _, test := range commandTests {
if test.expected {
assert.NotEmpty(t, cmd.Command(test.name))
} else {
assert.Empty(t, cmd.Command(test.name))
}
}
}
var defaultCommandTests = []struct {
cmdName string
defaultCmd string
args []string
errNotExpected bool
}{
{"foobar", "foobar", nil, true},
{"batbaz", "foobar", nil, true},
{"b", "", nil, true},
{"f", "", nil, true},
{"", "foobar", nil, true},
{"", "", nil, true},
{" ", "", nil, true},
{"bat", "batbaz", nil, true},
{"nothing", "batbaz", nil, true},
{"nothing", "", nil, false},
{"foobar", "foobar", []string{"xy", "zdf"}, true},
{"", "foobar", []string{"xy", "zdf"}, true},
}
func TestCommand_RunDefaultCommand(t *testing.T) {
for _, test := range defaultCommandTests {
testTitle := fmt.Sprintf("command=%[1]s-default=%[2]s-args=%[3]v", test.cmdName, test.defaultCmd, test.args)
t.Run(testTitle, func(t *testing.T) {
fooCount := 0
var fooArgs Args
barCount := 0
cmd := &Command{
DefaultCommand: test.defaultCmd,
Commands: []*Command{
{
Name: "foobar",
Aliases: []string{"f"},
Action: func(ctx context.Context, c *Command) error {
fooCount++
fooArgs = c.Args()
return nil
},
},
{
Name: "batbaz",
Aliases: []string{"b"},
Action: func(ctx context.Context, c *Command) error {
barCount++
return nil
},
},
},
}
runArgs := []string{"c"}
if test.cmdName != "" {
runArgs = append(runArgs, test.cmdName)
}
if test.args != nil {
runArgs = append(runArgs, test.args...)
}
err := cmd.Run(buildTestContext(t), runArgs)
if test.errNotExpected {
assert.NoError(t, err)
if fooCount == 0 && barCount == 0 && test.defaultCmd != "" {
t.Errorf("expected one of the commands to run")
}
if fooCount > 0 {
expectedArgs := &stringSliceArgs{v: []string{}}
if len(test.args) > 0 && (test.args[0] == "foobar" || test.args[0] == "f") {
expectedArgs = &stringSliceArgs{v: test.args[1:]}
} else if test.args != nil {
expectedArgs = &stringSliceArgs{v: test.args}
}
assert.Equal(t, expectedArgs, fooArgs)
}
} else {
if fooCount > 0 || barCount > 0 {
t.Errorf("expected no commands to run")
}
assert.Error(t, err)
}
})
}
}
var defaultCommandSubCommandTests = []struct {
cmdName string
subCmd string
defaultCmd string
errNotExpected bool
}{
{"foobar", "", "foobar", true},
{"foobar", "carly", "foobar", true},
{"batbaz", "", "foobar", true},
{"b", "", "", true},
{"f", "", "", true},
{"", "", "foobar", true},
{"", "", "", true},
{"", "jimbob", "foobar", true},
{"", "j", "foobar", true},
{"", "carly", "foobar", true},
{"", "jimmers", "foobar", false},
{"", "jimmers", "", false},
{" ", "jimmers", "foobar", true},
{"", "", "", true},
{" ", "", "", true},
{" ", "j", "", true},
{"bat", "", "batbaz", false},
{"nothing", "", "batbaz", false},
{"nothing", "", "", false},
{"nothing", "j", "batbaz", false},
{"nothing", "carly", "", false},
}
func TestCommand_RunDefaultCommandWithSubCommand(t *testing.T) {
for _, test := range defaultCommandSubCommandTests {
testTitle := fmt.Sprintf("command=%[1]s-subcmd=%[2]s-default=%[3]s", test.cmdName, test.subCmd, test.defaultCmd)
t.Run(testTitle, func(t *testing.T) {
cmd := &Command{
DefaultCommand: test.defaultCmd,
Commands: []*Command{
{
Name: "foobar",
Aliases: []string{"f"},
Commands: []*Command{
{Name: "jimbob", Aliases: []string{"j"}},
{Name: "carly"},
},
},
{Name: "batbaz", Aliases: []string{"b"}},
},
}
runArgs := []string{"c"}
if test.cmdName != "" {
runArgs = append(runArgs, test.cmdName)
}
if test.subCmd != "" {
runArgs = append(runArgs, test.subCmd)
}
err := cmd.Run(buildTestContext(t), runArgs)
if test.errNotExpected {
assert.NoError(t, err)
} else {
assert.Error(t, err)
}
})
}
}
var defaultCommandFlagTests = []struct {
cmdName string
flag string
defaultCmd string
errNotExpected bool
}{
{"foobar", "", "foobar", true},
{"foobar", "-c derp", "foobar", true},
{"batbaz", "", "foobar", true},
{"b", "", "", true},
{"f", "", "", true},
{"", "", "foobar", true},
{"", "", "", true},
{"", "-j", "foobar", true},
{"", "-j", "foobar", true},
{"", "-c derp", "foobar", true},
{"", "--carly=derp", "foobar", true},
{"", "-j", "foobar", true},
{"", "-j", "", true},
{" ", "-j", "foobar", true},
{"", "", "", true},
{" ", "", "", true},
{" ", "-j", "", true},
{"bat", "", "batbaz", false},
{"nothing", "", "batbaz", false},
{"nothing", "", "", false},
{"nothing", "--jimbob", "batbaz", false},
{"nothing", "--carly", "", false},
}
func TestCommand_RunDefaultCommandWithFlags(t *testing.T) {
for _, test := range defaultCommandFlagTests {
testTitle := fmt.Sprintf("command=%[1]s-flag=%[2]s-default=%[3]s", test.cmdName, test.flag, test.defaultCmd)
t.Run(testTitle, func(t *testing.T) {
cmd := &Command{
DefaultCommand: test.defaultCmd,
Flags: []Flag{
&StringFlag{
Name: "carly",
Aliases: []string{"c"},