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3768 lines (3354 loc) · 106 KB
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package cli
import (
"context"
"errors"
"flag"
"fmt"
"os"
"path/filepath"
"reflect"
"regexp"
"runtime"
"sort"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
type Parser [2]string
func (p *Parser) Set(value string) error {
parts := strings.Split(value, ",")
if len(parts) != 2 {
return fmt.Errorf("invalid format")
}
(*p)[0] = parts[0]
(*p)[1] = parts[1]
return nil
}
func (p *Parser) String() string {
return fmt.Sprintf("%s,%s", p[0], p[1])
}
func (p *Parser) Get() any {
return p
}
var boolFlagTests = []struct {
name string
expected string
}{
{"help", "--help\t"},
{"h", "-h\t"},
}
func TestBoolFlagHelpOutput(t *testing.T) {
for _, test := range boolFlagTests {
fl := &BoolFlag{Name: test.name}
output := fl.String()
assert.Equal(t, test.expected, output)
}
}
func TestBoolFlagApply_SetsAllNames(t *testing.T) {
v := false
cmd := buildMinimalTestCommand()
cmd.Flags = []Flag{
&BoolFlag{Name: "wat", Aliases: []string{"W", "huh"}, Destination: &v},
}
err := cmd.Run(buildTestContext(t), []string{"", "--wat", "-W", "--huh"})
assert.NoError(t, err)
assert.True(t, v)
}
func TestBoolFlagValueFromCommand(t *testing.T) {
tf := &BoolFlag{Name: "trueflag"}
ff := &BoolFlag{Name: "falseflag"}
cmd := buildMinimalTestCommand()
cmd.Flags = []Flag{
tf,
ff,
}
r := require.New(t)
r.NoError(cmd.Set(tf.Name, "true"))
r.NoError(cmd.Set(ff.Name, "false"))
r.True(cmd.Bool(tf.Name))
r.False(cmd.Bool(ff.Name))
}
func TestBoolFlagApply_SetsCount(t *testing.T) {
v := false
count := 0
cmd := buildMinimalTestCommand()
cmd.Flags = []Flag{
&BoolFlag{Name: "wat", Aliases: []string{"W", "huh"}, Destination: &v, Config: BoolConfig{Count: &count}},
}
assert.NoError(t, cmd.Run(buildTestContext(t), []string{"", "--wat", "-W", "--huh"}))
assert.True(t, v)
assert.Equal(t, 3, count)
}
func TestBoolFlagCountFromCommand(t *testing.T) {
boolCountTests := []struct {
name string
input []string
expectedVal bool
expectedCount int
}{
{
name: "3 count",
input: []string{"main", "-tf", "-w", "-huh"},
expectedVal: true,
expectedCount: 3,
},
{
name: "single count",
input: []string{"main", "-huh"},
expectedVal: true,
expectedCount: 1,
},
{
name: "zero count",
input: []string{"main"},
expectedVal: false,
expectedCount: 0,
},
}
flags := func() []Flag {
return []Flag{
&BoolFlag{Name: "tf", Aliases: []string{"w", "huh"}},
&BoolWithInverseFlag{Name: "tf", Aliases: []string{"w", "huh"}},
}
}
for index := range flags() {
for _, bct := range boolCountTests {
t.Run(bct.name, func(t *testing.T) {
bf := flags()[index]
cmd := &Command{
Flags: []Flag{
bf,
},
}
r := require.New(t)
r.NoError(cmd.Run(buildTestContext(t), bct.input))
for _, alias := range bf.Names() {
r.Equal(bct.expectedCount, cmd.Count(alias))
r.Equal(bct.expectedVal, cmd.Value(alias))
}
})
}
}
}
func TestFlagsFromEnv(t *testing.T) {
testCases := []struct {
name string
input string
output any
fl Flag
errContains string
}{
{
name: "BoolFlag valid true",
input: "1",
output: true,
fl: &BoolFlag{Name: "debug", Sources: EnvVars("DEBUG")},
},
{
name: "BoolFlag valid false",
input: "false",
output: false,
fl: &BoolFlag{Name: "debug", Sources: EnvVars("DEBUG")},
},
{
name: "BoolFlag invalid",
input: "foobar",
output: true,
fl: &BoolFlag{Name: "debug", Sources: EnvVars("DEBUG")},
errContains: `could not parse "foobar" as bool value from environment variable ` +
`"DEBUG" for flag debug:`,
},
{
name: "BoolInverse Empty",
output: false,
fl: &BoolWithInverseFlag{Name: "debug", Sources: EnvVars("DEBUG")},
},
{
name: "DurationFlag valid",
input: "1s",
output: 1 * time.Second,
fl: &DurationFlag{Name: "time", Sources: EnvVars("TIME")},
},
{
name: "DurationFlag invalid",
input: "foobar",
output: false,
fl: &DurationFlag{Name: "time", Sources: EnvVars("TIME")},
errContains: `could not parse "foobar" as time.Duration value from environment ` +
`variable "TIME" for flag time:`,
},
{
name: "Float64Flag valid",
input: "1.2",
output: 1.2,
fl: &FloatFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Float64Flag valid from int",
input: "1",
output: 1.0,
fl: &FloatFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Float64Flag invalid",
input: "foobar",
output: 0,
fl: &FloatFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as float64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Int64Flag valid",
input: "1",
output: int64(1),
fl: &Int64Flag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Int64Flag invalid from float",
input: "1.2",
output: 0,
fl: &Int64Flag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2" as int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Int64Flag invalid",
input: "foobar",
output: 0,
fl: &Int64Flag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Int64Flag valid from hex",
input: "deadBEEF",
output: int64(3735928559),
fl: &Int64Flag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 16}},
},
{
name: "Int64Flag invalid from octal",
input: "08",
output: 0,
fl: &Int64Flag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 8}},
errContains: `could not parse "08" as int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Float64SliceFlag valid",
input: "1.0,2",
output: []float64{1, 2},
fl: &FloatSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Float64SliceFlag invalid",
input: "foobar",
output: []float64{},
fl: &FloatSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as []float64 value from environment ` +
`variable "SECONDS" for flag seconds:`,
},
{
name: "Generic",
input: "foo,bar",
output: &Parser{"foo", "bar"},
fl: &GenericFlag{Name: "names", Value: &Parser{}, Sources: EnvVars("NAMES")},
},
{
name: "Int64SliceFlag valid",
input: "1,2",
output: []int64{1, 2},
fl: &Int64SliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Int64SliceFlag invalid from float",
input: "1.2,2",
output: []int64{},
fl: &Int64SliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2,2" as []int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Int64SliceFlag invalid",
input: "foobar",
output: []int64{},
fl: &Int64SliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as []int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Uint64SliceFlag valid",
input: "1,2",
output: []uint64{1, 2},
fl: &Uint64SliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Uint64SliceFlag invalid with float",
input: "1.2,2",
output: []uint64{},
fl: &Uint64SliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2,2" as []uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Uint64SliceFlag invalid",
input: "foobar",
output: []uint64{},
fl: &Uint64SliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as []uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "StringFlag valid",
input: "foo",
output: "foo",
fl: &StringFlag{Name: "name", Sources: EnvVars("NAME")},
},
{
name: "StringFlag valid with TrimSpace",
input: " foo",
output: "foo",
fl: &StringFlag{Name: "names", Sources: EnvVars("NAMES"), Config: StringConfig{TrimSpace: true}},
},
{
name: "StringSliceFlag valid",
input: "foo,bar",
output: []string{"foo", "bar"},
fl: &StringSliceFlag{Name: "names", Sources: EnvVars("NAMES")},
},
{
name: "StringSliceFlag valid with TrimSpace",
input: "foo , bar ",
output: []string{"foo", "bar"},
fl: &StringSliceFlag{Name: "names", Sources: EnvVars("NAMES"), Config: StringConfig{TrimSpace: true}},
},
{
name: "StringSliceFlag valid without TrimSpace",
input: "foo , bar ",
output: []string{"foo ", " bar "},
fl: &StringSliceFlag{Name: "names", Sources: EnvVars("NAMES")},
},
{
name: "StringMapFlag valid",
input: "foo=bar,empty=",
output: map[string]string{"foo": "bar", "empty": ""},
fl: &StringMapFlag{Name: "names", Sources: EnvVars("NAMES")},
},
{
name: "StringMapFlag valid with TrimSpace",
input: "foo= bar ",
output: map[string]string{"foo": "bar"},
fl: &StringMapFlag{Name: "names", Sources: EnvVars("NAMES"), Config: StringConfig{TrimSpace: true}},
},
{
name: "Uint64Flag valid",
input: "1",
output: uint64(1),
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "Uint64Flag valid leading zero",
input: "08",
output: uint64(8),
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 10}},
},
{
name: "Uint64Flag valid from octal",
input: "755",
output: uint64(493),
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 8}},
},
{
name: "Uint64Flag valid from hex",
input: "deadBEEF",
output: uint64(3735928559),
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 16}},
},
{
name: "Uint64Flag invalid octal",
input: "08",
output: 0,
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 8}},
errContains: `could not parse "08" as uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Uint64Flag invalid float",
input: "1.2",
output: 0,
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2" as uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "Uint64Flag invalid",
input: "foobar",
output: 0,
fl: &Uint64Flag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
r := require.New(t)
r.Implements((*DocGenerationFlag)(nil), tc.fl)
f := tc.fl.(DocGenerationFlag)
envVarSlice := f.GetEnvVars()
t.Setenv(envVarSlice[0], tc.input)
cmd := &Command{
Flags: []Flag{tc.fl},
Action: func(_ context.Context, cmd *Command) error {
r.Equal(tc.output, cmd.Value(tc.fl.Names()[0]))
r.True(tc.fl.IsSet())
r.Equal(tc.fl.Names(), cmd.FlagNames())
return nil
},
}
err := cmd.Run(buildTestContext(t), []string{"run"})
if tc.errContains != "" {
r.NotNil(err)
r.ErrorContains(err, tc.errContains)
return
}
r.NoError(err)
})
}
}
type nodocFlag struct {
Flag
Name string
}
func TestFlagStringifying(t *testing.T) {
for _, tc := range []struct {
name string
fl Flag
expected string
}{
{
name: "bool-flag",
fl: &BoolFlag{Name: "vividly"},
expected: "--vividly\t",
},
{
name: "bool-flag-with-default-text",
fl: &BoolFlag{Name: "wildly", DefaultText: "scrambled"},
expected: "--wildly\t(default: scrambled)",
},
{
name: "bool-inv-flag",
fl: &BoolWithInverseFlag{Name: "vividly"},
expected: "--vividly, --no-vividly\t(default: false)",
},
{
name: "bool-inv-flag-with-default-text",
fl: &BoolWithInverseFlag{Name: "vividly", DefaultText: "auto"},
expected: "--vividly, --no-vividly\t(default: auto)",
},
{
name: "duration-flag",
fl: &DurationFlag{Name: "scream-for"},
expected: "--scream-for duration\t(default: 0s)",
},
{
name: "duration-flag-with-default-text",
fl: &DurationFlag{Name: "feels-about", DefaultText: "whimsically"},
expected: "--feels-about duration\t(default: whimsically)",
},
{
name: "float64-flag",
fl: &FloatFlag{Name: "arduous"},
expected: "--arduous float\t(default: 0)",
},
{
name: "float64-flag-with-default-text",
fl: &FloatFlag{Name: "filibuster", DefaultText: "42"},
expected: "--filibuster float\t(default: 42)",
},
{
name: "float64-slice-flag",
fl: &FloatSliceFlag{Name: "pizzas"},
expected: "--pizzas float [ --pizzas float ]\t",
},
{
name: "float64-slice-flag-with-default-text",
fl: &FloatSliceFlag{Name: "pepperonis", DefaultText: "shaved"},
expected: "--pepperonis float [ --pepperonis float ]\t(default: shaved)",
},
{
name: "generic-flag",
fl: &GenericFlag{Name: "yogurt"},
expected: "--yogurt value\t",
},
{
name: "generic-flag-with-default-text",
fl: &GenericFlag{Name: "ricotta", DefaultText: "plops"},
expected: "--ricotta value\t(default: plops)",
},
{
name: "int-flag",
fl: &Int64Flag{Name: "grubs"},
expected: "--grubs int\t(default: 0)",
},
{
name: "int-flag-with-default-text",
fl: &Int64Flag{Name: "poisons", DefaultText: "11ty"},
expected: "--poisons int\t(default: 11ty)",
},
{
name: "int-slice-flag",
fl: &Int64SliceFlag{Name: "pencils"},
expected: "--pencils int [ --pencils int ]\t",
},
{
name: "int-slice-flag-with-default-text",
fl: &Int64Flag{Name: "pens", DefaultText: "-19"},
expected: "--pens int\t(default: -19)",
},
{
name: "uint-slice-flag",
fl: &Uint64SliceFlag{Name: "pencils"},
expected: "--pencils uint [ --pencils uint ]\t",
},
{
name: "uint-slice-flag-with-default-text",
fl: &Uint64Flag{Name: "pens", DefaultText: "29"},
expected: "--pens uint\t(default: 29)",
},
{
name: "int64-flag",
fl: &Int64Flag{Name: "flume"},
expected: "--flume int\t(default: 0)",
},
{
name: "int64-flag-with-default-text",
fl: &Int64Flag{Name: "shattering", DefaultText: "22"},
expected: "--shattering int\t(default: 22)",
},
{
name: "uint64-slice-flag",
fl: &Uint64SliceFlag{Name: "drawers"},
expected: "--drawers uint [ --drawers uint ]\t",
},
{
name: "uint64-slice-flag-with-default-text",
fl: &Uint64SliceFlag{Name: "handles", DefaultText: "-2"},
expected: "--handles uint [ --handles uint ]\t(default: -2)",
},
{
name: "string-flag",
fl: &StringFlag{Name: "arf-sound"},
expected: "--arf-sound string\t",
},
{
name: "string-flag-with-default-text",
fl: &StringFlag{Name: "woof-sound", DefaultText: "urp"},
expected: "--woof-sound string\t(default: urp)",
},
{
name: "string-slice-flag",
fl: &StringSliceFlag{Name: "meow-sounds"},
expected: "--meow-sounds string [ --meow-sounds string ]\t",
},
{
name: "string-slice-flag-with-default-text",
fl: &StringSliceFlag{Name: "moo-sounds", DefaultText: "awoo"},
expected: "--moo-sounds string [ --moo-sounds string ]\t(default: awoo)",
},
{
name: "timestamp-flag",
fl: &TimestampFlag{Name: "eating"},
expected: "--eating time\t",
},
{
name: "timestamp-flag-with-default-text",
fl: &TimestampFlag{Name: "sleeping", DefaultText: "earlier"},
expected: "--sleeping time\t(default: earlier)",
},
{
name: "uint-flag",
fl: &Uint64Flag{Name: "jars"},
expected: "--jars uint\t(default: 0)",
},
{
name: "uint-flag-with-default-text",
fl: &Uint64Flag{Name: "bottles", DefaultText: "99"},
expected: "--bottles uint\t(default: 99)",
},
{
name: "uint64-flag",
fl: &Uint64Flag{Name: "cans"},
expected: "--cans uint\t(default: 0)",
},
{
name: "uint64-flag-with-default-text",
fl: &Uint64Flag{Name: "tubes", DefaultText: "13"},
expected: "--tubes uint\t(default: 13)",
},
{
name: "nodoc-flag",
fl: &nodocFlag{Name: "scarecrow"},
expected: "",
},
} {
t.Run(tc.name, func(ct *testing.T) {
s := stringifyFlag(tc.fl)
assert.Equal(t, tc.expected, s, "stringified flag %q does not match expected", s)
})
}
}
var stringFlagTests = []struct {
name string
aliases []string
usage string
value string
expected string
}{
{"foo", nil, "", "", "--foo string\t"},
{"f", nil, "", "", "-f string\t"},
{"f", nil, "The total `foo` desired", "all", "-f foo\tThe total foo desired (default: \"all\")"},
{"test", nil, "", "Something", "--test string\t(default: \"Something\")"},
{"config", []string{"c"}, "Load configuration from `FILE`", "", "--config FILE, -c FILE\tLoad configuration from FILE"},
{"config", []string{"c"}, "Load configuration from `CONFIG`", "config.json", "--config CONFIG, -c CONFIG\tLoad configuration from CONFIG (default: \"config.json\")"},
}
func TestStringFlagHelpOutput(t *testing.T) {
for _, test := range stringFlagTests {
fl := &StringFlag{Name: test.name, Aliases: test.aliases, Usage: test.usage, Value: test.value}
assert.Equal(t, test.expected, fl.String())
}
}
func TestStringFlagDefaultText(t *testing.T) {
fl := &StringFlag{Name: "foo", Aliases: nil, Usage: "amount of `foo` requested", Value: "none", DefaultText: "all of it"}
expected := "--foo foo\tamount of foo requested (default: all of it)"
assert.Equal(t, expected, fl.String())
}
// An empty value from a source can only be a value for a string, and reads as
// false for a bool. For any other kind there is nothing to parse, so the source
// must not count as setting the flag: that would satisfy Required with a zero
// value, report IsSet for a flag that only holds its default, and hide a later
// source in the chain that does carry a value.
func TestFlagsFromEmptyEnv(t *testing.T) {
testCases := []struct {
name string
env map[string]string
fl Flag
wantValue any
wantIsSet bool
errContains string
}{
{
name: "required int from an empty env var is not set",
env: map[string]string{"PORT": ""},
fl: &IntFlag{Name: "port", Required: true, Sources: EnvVars("PORT")},
errContains: `Required flag "port" not set`,
},
{
name: "required duration from an empty env var is not set",
env: map[string]string{"TIMEOUT": ""},
fl: &DurationFlag{Name: "timeout", Required: true, Sources: EnvVars("TIMEOUT")},
errContains: `Required flag "timeout" not set`,
},
{
name: "int keeps its default and is not set",
env: map[string]string{"PORT": ""},
fl: &IntFlag{Name: "port", Value: 80, Sources: EnvVars("PORT")},
wantValue: 80,
},
{
name: "string slice keeps its default and is not set",
env: map[string]string{"TAGS": ""},
fl: &StringSliceFlag{Name: "tags", Value: []string{"a"}, Sources: EnvVars("TAGS")},
wantValue: []string{"a"},
},
{
name: "an empty env var does not hide a later one",
env: map[string]string{"LEGACY_PORT": "", "PORT": "8080"},
fl: &IntFlag{Name: "port", Value: 80, Sources: EnvVars("LEGACY_PORT", "PORT")},
wantValue: 8080,
wantIsSet: true,
},
{
name: "an unparsable env var still fails before a later one",
env: map[string]string{"LEGACY_PORT": "abc", "PORT": "8080"},
fl: &IntFlag{Name: "port", Sources: EnvVars("LEGACY_PORT", "PORT")},
errContains: `could not parse "abc" as int value from environment variable "LEGACY_PORT"`,
},
{
name: "an empty string is still a value",
env: map[string]string{"NAME": ""},
fl: &StringFlag{Name: "name", Value: "def", Sources: EnvVars("NAME")},
wantValue: "",
wantIsSet: true,
},
{
name: "an empty bool still reads as false",
env: map[string]string{"DEBUG": ""},
fl: &BoolFlag{Name: "debug", Value: true, Sources: EnvVars("DEBUG")},
wantValue: false,
wantIsSet: true,
},
}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
for k, v := range tc.env {
t.Setenv(k, v)
}
name := tc.fl.Names()[0]
var gotValue any
var gotIsSet bool
cmd := &Command{
Flags: []Flag{tc.fl},
Action: func(_ context.Context, cmd *Command) error {
gotValue = cmd.Value(name)
gotIsSet = cmd.IsSet(name)
return nil
},
}
err := cmd.Run(buildTestContext(t), []string{"run"})
if tc.errContains != "" {
require.ErrorContains(t, err, tc.errContains)
return
}
require.NoError(t, err)
assert.Equal(t, tc.wantValue, gotValue)
assert.Equal(t, tc.wantIsSet, gotIsSet)
})
}
}
// The skip applies to every source in the chain, not only to environment
// variables, so an empty file is treated the same way as an empty variable.
func TestFlagFromEmptyFileSource(t *testing.T) {
path := filepath.Join(t.TempDir(), "port")
require.NoError(t, os.WriteFile(path, nil, 0o600))
cmd := &Command{
Flags: []Flag{&IntFlag{Name: "port", Required: true, Sources: Files(path)}},
}
err := cmd.Run(buildTestContext(t), []string{"run"})
require.ErrorContains(t, err, `Required flag "port" not set`)
}
func TestStringFlagWithEnvVarHelpOutput(t *testing.T) {
t.Setenv("APP_FOO", "derp")
for _, test := range stringFlagTests {
fl := &StringFlag{Name: test.name, Aliases: test.aliases, Value: test.value, Sources: EnvVars("APP_FOO")}
output := fl.String()
expectedSuffix := withEnvHint([]string{"APP_FOO"}, "")
if !strings.HasSuffix(output, expectedSuffix) {
t.Errorf("%s does not end with"+expectedSuffix, output)
}
}
}
var _ = []struct {
name string
aliases []string
usage string
value string
prefixer FlagNamePrefixFunc
expected string
}{
{name: "foo", usage: "", value: "", prefixer: func(a []string, b string) string {
return fmt.Sprintf("name: %s, ph: %s", a, b)
}, expected: "name: foo, ph: value\t"},
{name: "f", usage: "", value: "", prefixer: func(a []string, b string) string {
return fmt.Sprintf("name: %s, ph: %s", a, b)
}, expected: "name: f, ph: value\t"},
{name: "f", usage: "The total `foo` desired", value: "all", prefixer: func(a []string, b string) string {
return fmt.Sprintf("name: %s, ph: %s", a, b)
}, expected: "name: f, ph: foo\tThe total foo desired (default: \"all\")"},
{name: "test", usage: "", value: "Something", prefixer: func(a []string, b string) string {
return fmt.Sprintf("name: %s, ph: %s", a, b)
}, expected: "name: test, ph: value\t(default: \"Something\")"},
{name: "config", aliases: []string{"c"}, usage: "Load configuration from `FILE`", value: "", prefixer: func(a []string, b string) string {
return fmt.Sprintf("name: %s, ph: %s", a, b)
}, expected: "name: config,c, ph: FILE\tLoad configuration from FILE"},
{name: "config", aliases: []string{"c"}, usage: "Load configuration from `CONFIG`", value: "config.json", prefixer: func(a []string, b string) string {
return fmt.Sprintf("name: %s, ph: %s", a, b)
}, expected: "name: config,c, ph: CONFIG\tLoad configuration from CONFIG (default: \"config.json\")"},
}
func TestStringFlagApply_SetsAllNames(t *testing.T) {
v := "mmm"
cmd := &Command{
Flags: []Flag{
&StringFlag{Name: "hay", Aliases: []string{"H", "hayyy"}, Destination: &v},
},
}
err := cmd.Run(buildTestContext(t), []string{"", "--hay", "u", "-H", "yuu", "--hayyy", "YUUUU"})
assert.NoError(t, err)
assert.Equal(t, "YUUUU", v)
}
func TestStringFlagValueFromCommand(t *testing.T) {
f := &StringFlag{Name: "myflag"}
cmd := &Command{
Flags: []Flag{
f,
},
}
require.NoError(t, cmd.Set("myflag", "foobar"))
require.Equal(t, "foobar", cmd.String(f.Name))
}
var _ = []struct {
name string
env string
hinter FlagEnvHintFunc
expected string
}{
{"foo", "", func(a []string, b string) string {
return fmt.Sprintf("env: %s, str: %s", a, b)
}, "env: , str: --foo value\t"},
{"f", "", func(a []string, b string) string {
return fmt.Sprintf("env: %s, str: %s", a, b)
}, "env: , str: -f value\t"},
{"foo", "ENV_VAR", func(a []string, b string) string {
return fmt.Sprintf("env: %s, str: %s", a, b)
}, "env: ENV_VAR, str: --foo value\t"},
{"f", "ENV_VAR", func(a []string, b string) string {
return fmt.Sprintf("env: %s, str: %s", a, b)
}, "env: ENV_VAR, str: -f value\t"},
}
// func TestFlagEnvHinter(t *testing.T) {
// defer func() {
// FlagEnvHinter = withEnvHint
// }()
//
// for _, test := range envHintFlagTests {
// FlagEnvHinter = test.hinter
// fl := StringFlag{Name: test.name, Sources: ValueSources{test.env}}
// output := fl.String()
// if output != test.expected {
// t.Errorf("%q does not match %q", output, test.expected)
// }
// }
// }
var stringSliceFlagTests = []struct {
name string
aliases []string
value []string
expected string
}{
{"foo", nil, []string{}, "--foo string [ --foo string ]\t"},
{"f", nil, []string{}, "-f string [ -f string ]\t"},
{"f", nil, []string{"Lipstick"}, "-f string [ -f string ]\t(default: \"Lipstick\")"},
{"test", nil, []string{"Something"}, "--test string [ --test string ]\t(default: \"Something\")"},
{"dee", []string{"d"}, []string{"Inka", "Dinka", "dooo"}, "--dee string, -d string [ --dee string, -d string ]\t(default: \"Inka\", \"Dinka\", \"dooo\")"},
}
func TestStringSliceFlagHelpOutput(t *testing.T) {
for _, test := range stringSliceFlagTests {
f := &StringSliceFlag{Name: test.name, Aliases: test.aliases, Value: test.value}
assert.Equal(t, test.expected, f.String())
}
}
func TestStringSliceFlagWithEnvVarHelpOutput(t *testing.T) {
t.Setenv("APP_QWWX", "11,4")
for _, test := range stringSliceFlagTests {
fl := &StringSliceFlag{Name: test.name, Aliases: test.aliases, Value: test.value, Sources: EnvVars("APP_QWWX")}
output := fl.String()
expectedSuffix := withEnvHint([]string{"APP_QWWX"}, "")
if !strings.HasSuffix(output, expectedSuffix) {
t.Errorf("%q does not end with"+expectedSuffix, output)
}
}
}
func TestStringSliceFlagApply_SetsAllNames(t *testing.T) {
fl := &StringSliceFlag{Name: "goat", Aliases: []string{"G", "gooots"}}
cmd := &Command{
Flags: []Flag{
fl,
},
}
err := cmd.Run(buildTestContext(t), []string{"", "--goat", "aaa", "-G", "bbb", "--gooots", "eeeee"})
assert.NoError(t, err)
}
func TestStringSliceFlagApply_UsesEnvValues_noDefault(t *testing.T) {
t.Setenv("MY_GOAT", "vincent van goat,scape goat")
fl := &StringSliceFlag{Name: "goat", Sources: EnvVars("MY_GOAT")}
cmd := &Command{
Flags: []Flag{
fl,
},
}
err := cmd.Run(buildTestContext(t), []string{""})
assert.NoError(t, err)
assert.Equal(t, []string{"vincent van goat", "scape goat"}, cmd.Value("goat"))
}
func TestStringSliceFlagApply_UsesEnvValues_withDefault(t *testing.T) {
t.Setenv("MY_GOAT", "vincent van goat,scape goat")
val := []string{`some default`, `values here`}
fl := &StringSliceFlag{Name: "goat", Sources: EnvVars("MY_GOAT"), Value: val}
cmd := &Command{
Flags: []Flag{
fl,
},
}
err := cmd.Run(buildTestContext(t), []string{""})
assert.NoError(t, err)
assert.Equal(t, []string{"vincent van goat", "scape goat"}, cmd.Value("goat"))
}
func TestStringSliceFlagApply_DefaultValueWithDestination(t *testing.T) {
defValue := []string{"UA", "US"}
dest := []string{"CA"}
fl := StringSliceFlag{Name: "country", Value: defValue, Destination: &dest}
cmd := &Command{
Flags: []Flag{
&fl,
},
}
err := cmd.Run(buildTestContext(t), []string{""})
assert.NoError(t, err)
assert.Equal(t, defValue, dest)
}
func TestStringSliceFlagValueFromCommand(t *testing.T) {
f := &StringSliceFlag{Name: "myflag"}
cmd := &Command{
Flags: []Flag{
f,
},
}
require.NoError(t, cmd.Set("myflag", "a"))
require.NoError(t, cmd.Set("myflag", "b"))
require.NoError(t, cmd.Set("myflag", "c"))
require.Equal(t, []string{"a", "b", "c"}, cmd.StringSlice(f.Name))
}
var intFlagTests = []struct {
name string
expected string
}{
{"hats", "--hats int\t(default: 9)"},
{"H", "-H int\t(default: 9)"},
}
func TestIntFlagHelpOutput(t *testing.T) {
for _, test := range intFlagTests {
fl := &Int64Flag{Name: test.name, Value: 9}
assert.Equal(t, test.expected, fl.String())