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3295 lines (2906 loc) · 95.3 KB
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package cli
import (
"context"
"errors"
"flag"
"fmt"
"io"
"os"
"reflect"
"regexp"
"runtime"
"sort"
"strings"
"testing"
"time"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
var boolFlagTests = []struct {
name string
expected string
}{
{"help", "--help\t(default: false)"},
{"h", "-h\t(default: false)"},
}
func resetEnv(env []string) {
for _, e := range env {
fields := strings.SplitN(e, "=", 2)
os.Setenv(fields[0], fields[1])
}
}
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
fl := BoolFlag{Name: "wat", Aliases: []string{"W", "huh"}, Destination: &v}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse([]string{"--wat", "-W", "--huh"})
assert.NoError(t, err)
assert.True(t, v)
}
func TestBoolFlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Bool("trueflag", true, "doc")
set.Bool("falseflag", false, "doc")
cmd := &Command{flagSet: set}
tf := &BoolFlag{Name: "trueflag"}
ff := &BoolFlag{Name: "falseflag"}
r := require.New(t)
r.True(cmd.Bool(tf.Name))
r.False(cmd.Bool(ff.Name))
}
func TestBoolFlagApply_SetsCount(t *testing.T) {
v := false
count := 0
fl := BoolFlag{Name: "wat", Aliases: []string{"W", "huh"}, Destination: &v, Config: BoolConfig{Count: &count}}
set := flag.NewFlagSet("test", 0)
err := fl.Apply(set)
assert.NoError(t, err)
err = set.Parse([]string{"--wat", "-W", "--huh"})
assert.NoError(t, err)
assert.True(t, v)
assert.Equal(t, 3, count)
}
func TestBoolFlagCountFromCommand(t *testing.T) {
boolCountTests := []struct {
input []string
expectedVal bool
expectedCount int
}{
{
input: []string{"main", "-tf", "-w", "-huh"},
expectedVal: true,
expectedCount: 3,
},
{
input: []string{"main", "-huh"},
expectedVal: true,
expectedCount: 1,
},
{
input: []string{"main"},
expectedVal: false,
expectedCount: 0,
},
}
for _, bct := range boolCountTests {
bf := &BoolFlag{Name: "tf", Aliases: []string{"w", "huh"}}
cmd := &Command{
Flags: []Flag{
bf,
},
}
r := require.New(t)
r.NoError(cmd.Run(buildTestContext(t), bct.input))
r.Equal(bct.expectedVal, cmd.Value(bf.Name))
r.Equal(bct.expectedCount, cmd.Count(bf.Name))
for _, alias := range bf.Aliases {
r.Equal(bct.expectedCount, cmd.Count(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: "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: "IntFlag valid",
input: "1",
output: int64(1),
fl: &IntFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "IntFlag invalid from float",
input: "1.2",
output: 0,
fl: &IntFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2" as int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "IntFlag invalid",
input: "foobar",
output: 0,
fl: &IntFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "IntFlag valid from hex",
input: "deadBEEF",
output: int64(3735928559),
fl: &IntFlag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 16}},
},
{
name: "IntFlag invalid from octal",
input: "08",
output: 0,
fl: &IntFlag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 0}},
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: "IntSliceFlag valid",
input: "1,2",
output: []int64{1, 2},
fl: &IntSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "IntSliceFlag invalid from float",
input: "1.2,2",
output: []int64{},
fl: &IntSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2,2" as []int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "IntSliceFlag invalid",
input: "foobar",
output: []int64{},
fl: &IntSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "foobar" as []int64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "UintSliceFlag valid",
input: "1,2",
output: []uint64{1, 2},
fl: &UintSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "UintSliceFlag invalid with float",
input: "1.2,2",
output: []uint64{},
fl: &UintSliceFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2,2" as []uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "UintSliceFlag invalid",
input: "foobar",
output: []uint64{},
fl: &UintSliceFlag{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: "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: "UintFlag valid",
input: "1",
output: uint64(1),
fl: &UintFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
},
{
name: "UintFlag valid leading zero",
input: "08",
output: uint64(8),
fl: &UintFlag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 10}},
},
{
name: "UintFlag valid from octal",
input: "755",
output: uint64(493),
fl: &UintFlag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 8}},
},
{
name: "UintFlag valid from hex",
input: "deadBEEF",
output: uint64(3735928559),
fl: &UintFlag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 16}},
},
{
name: "UintFlag invalid octal",
input: "08",
output: 0,
fl: &UintFlag{Name: "seconds", Sources: EnvVars("SECONDS"), Config: IntegerConfig{Base: 0}},
errContains: `could not parse "08" as uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "UintFlag invalid float",
input: "1.2",
output: 0,
fl: &UintFlag{Name: "seconds", Sources: EnvVars("SECONDS")},
errContains: `could not parse "1.2" as uint64 value from environment variable ` +
`"SECONDS" for flag seconds:`,
},
{
name: "UintFlag invalid",
input: "foobar",
output: 0,
fl: &UintFlag{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(default: false)",
},
{
name: "bool-flag-with-default-text",
fl: &BoolFlag{Name: "wildly", DefaultText: "scrambled"},
expected: "--wildly\t(default: scrambled)",
},
{
name: "duration-flag",
fl: &DurationFlag{Name: "scream-for"},
expected: "--scream-for value\t(default: 0s)",
},
{
name: "duration-flag-with-default-text",
fl: &DurationFlag{Name: "feels-about", DefaultText: "whimsically"},
expected: "--feels-about value\t(default: whimsically)",
},
{
name: "float64-flag",
fl: &FloatFlag{Name: "arduous"},
expected: "--arduous value\t(default: 0)",
},
{
name: "float64-flag-with-default-text",
fl: &FloatFlag{Name: "filibuster", DefaultText: "42"},
expected: "--filibuster value\t(default: 42)",
},
{
name: "float64-slice-flag",
fl: &FloatSliceFlag{Name: "pizzas"},
expected: "--pizzas value [ --pizzas value ]\t",
},
{
name: "float64-slice-flag-with-default-text",
fl: &FloatSliceFlag{Name: "pepperonis", DefaultText: "shaved"},
expected: "--pepperonis value [ --pepperonis value ]\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: &IntFlag{Name: "grubs"},
expected: "--grubs value\t(default: 0)",
},
{
name: "int-flag-with-default-text",
fl: &IntFlag{Name: "poisons", DefaultText: "11ty"},
expected: "--poisons value\t(default: 11ty)",
},
{
name: "int-slice-flag",
fl: &IntSliceFlag{Name: "pencils"},
expected: "--pencils value [ --pencils value ]\t",
},
{
name: "int-slice-flag-with-default-text",
fl: &IntFlag{Name: "pens", DefaultText: "-19"},
expected: "--pens value\t(default: -19)",
},
{
name: "uint-slice-flag",
fl: &UintSliceFlag{Name: "pencils"},
expected: "--pencils value [ --pencils value ]\t",
},
{
name: "uint-slice-flag-with-default-text",
fl: &UintFlag{Name: "pens", DefaultText: "29"},
expected: "--pens value\t(default: 29)",
},
{
name: "int64-flag",
fl: &IntFlag{Name: "flume"},
expected: "--flume value\t(default: 0)",
},
{
name: "int64-flag-with-default-text",
fl: &IntFlag{Name: "shattering", DefaultText: "22"},
expected: "--shattering value\t(default: 22)",
},
{
name: "uint64-slice-flag",
fl: &UintSliceFlag{Name: "drawers"},
expected: "--drawers value [ --drawers value ]\t",
},
{
name: "uint64-slice-flag-with-default-text",
fl: &UintSliceFlag{Name: "handles", DefaultText: "-2"},
expected: "--handles value [ --handles value ]\t(default: -2)",
},
{
name: "string-flag",
fl: &StringFlag{Name: "arf-sound"},
expected: "--arf-sound value\t",
},
{
name: "string-flag-with-default-text",
fl: &StringFlag{Name: "woof-sound", DefaultText: "urp"},
expected: "--woof-sound value\t(default: urp)",
},
{
name: "string-slice-flag",
fl: &StringSliceFlag{Name: "meow-sounds"},
expected: "--meow-sounds value [ --meow-sounds value ]\t",
},
{
name: "string-slice-flag-with-default-text",
fl: &StringSliceFlag{Name: "moo-sounds", DefaultText: "awoo"},
expected: "--moo-sounds value [ --moo-sounds value ]\t(default: awoo)",
},
{
name: "timestamp-flag",
fl: &TimestampFlag{Name: "eating"},
expected: "--eating value\t",
},
{
name: "timestamp-flag-with-default-text",
fl: &TimestampFlag{Name: "sleeping", DefaultText: "earlier"},
expected: "--sleeping value\t(default: earlier)",
},
{
name: "uint-flag",
fl: &UintFlag{Name: "jars"},
expected: "--jars value\t(default: 0)",
},
{
name: "uint-flag-with-default-text",
fl: &UintFlag{Name: "bottles", DefaultText: "99"},
expected: "--bottles value\t(default: 99)",
},
{
name: "uint64-flag",
fl: &UintFlag{Name: "cans"},
expected: "--cans value\t(default: 0)",
},
{
name: "uint64-flag-with-default-text",
fl: &UintFlag{Name: "tubes", DefaultText: "13"},
expected: "--tubes value\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 value\t"},
{"f", nil, "", "", "-f value\t"},
{"f", nil, "The total `foo` desired", "all", "-f foo\tThe total foo desired (default: \"all\")"},
{"test", nil, "", "Something", "--test value\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}
// create a tmp flagset
tfs := flag.NewFlagSet("test", 0)
assert.NoError(t, fl.Apply(tfs))
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())
}
func TestStringFlagWithEnvVarHelpOutput(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.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"
fl := StringFlag{Name: "hay", Aliases: []string{"H", "hayyy"}, Destination: &v}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse([]string{"--hay", "u", "-H", "yuu", "--hayyy", "YUUUU"})
assert.NoError(t, err)
assert.Equal(t, "YUUUU", v)
}
func TestStringFlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.String("myflag", "foobar", "doc")
cmd := &Command{flagSet: set}
f := &StringFlag{Name: "myflag"}
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 value [ --foo value ]\t"},
{"f", nil, []string{}, "-f value [ -f value ]\t"},
{"f", nil, []string{"Lipstick"}, "-f value [ -f value ]\t(default: \"Lipstick\")"},
{"test", nil, []string{"Something"}, "--test value [ --test value ]\t(default: \"Something\")"},
{"dee", []string{"d"}, []string{"Inka", "Dinka", "dooo"}, "--dee value, -d value [ --dee value, -d value ]\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) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.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"}}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse([]string{"--goat", "aaa", "-G", "bbb", "--gooots", "eeeee"})
assert.NoError(t, err)
}
func TestStringSliceFlagApply_UsesEnvValues_noDefault(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.Setenv("MY_GOAT", "vincent van goat,scape goat")
fl := StringSliceFlag{Name: "goat", Sources: EnvVars("MY_GOAT")}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse(nil)
assert.NoError(t, err)
assert.Equal(t, []string{"vincent van goat", "scape goat"}, set.Lookup("goat").Value.(flag.Getter).Get())
}
func TestStringSliceFlagApply_UsesEnvValues_withDefault(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.Setenv("MY_GOAT", "vincent van goat,scape goat")
val := []string{`some default`, `values here`}
fl := StringSliceFlag{Name: "goat", Sources: EnvVars("MY_GOAT"), Value: val}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse(nil)
assert.NoError(t, err)
assert.Equal(t, []string{"vincent van goat", "scape goat"}, set.Lookup("goat").Value.(flag.Getter).Get())
}
func TestStringSliceFlagApply_DefaultValueWithDestination(t *testing.T) {
defValue := []string{"UA", "US"}
dest := []string{"CA"}
fl := StringSliceFlag{Name: "country", Value: defValue, Destination: &dest}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse([]string{})
assert.NoError(t, err)
assert.Equal(t, defValue, dest)
}
func TestStringSliceFlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Var(NewStringSlice("a", "b", "c"), "myflag", "doc")
cmd := &Command{flagSet: set}
f := &StringSliceFlag{Name: "myflag"}
require.Equal(t, []string{"a", "b", "c"}, cmd.StringSlice(f.Name))
}
var intFlagTests = []struct {
name string
expected string
}{
{"hats", "--hats value\t(default: 9)"},
{"H", "-H value\t(default: 9)"},
}
func TestIntFlagHelpOutput(t *testing.T) {
for _, test := range intFlagTests {
fl := &IntFlag{Name: test.name, Value: 9}
// create a temporary flag set to apply
tfs := flag.NewFlagSet("test", 0)
require.NoError(t, fl.Apply(tfs))
assert.Equal(t, test.expected, fl.String())
}
}
func TestIntFlagWithEnvVarHelpOutput(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.Setenv("APP_BAR", "2")
for _, test := range intFlagTests {
fl := &IntFlag{Name: test.name, Sources: EnvVars("APP_BAR")}
output := fl.String()
expectedSuffix := withEnvHint([]string{"APP_BAR"}, "")
if !strings.HasSuffix(output, expectedSuffix) {
t.Errorf("%s does not end with"+expectedSuffix, output)
}
}
}
func TestIntFlagApply_SetsAllNames(t *testing.T) {
v := int64(3)
fl := IntFlag{Name: "banana", Aliases: []string{"B", "banannanana"}, Destination: &v}
set := flag.NewFlagSet("test", 0)
r := require.New(t)
r.NoError(fl.Apply(set))
r.NoError(set.Parse([]string{"--banana", "1", "-B", "2", "--banannanana", "5"}))
r.Equal(int64(5), v)
}
func TestIntFlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Int64("myflag", int64(42), "doc")
cmd := &Command{flagSet: set}
fl := &IntFlag{Name: "myflag"}
require.Equal(t, int64(42), cmd.Int(fl.Name))
}
var uintFlagTests = []struct {
name string
expected string
}{
{"nerfs", "--nerfs value\t(default: 41)"},
{"N", "-N value\t(default: 41)"},
}
func TestUintFlagHelpOutput(t *testing.T) {
for _, test := range uintFlagTests {
fl := &UintFlag{Name: test.name, Value: 41}
// create a temporary flag set to apply
tfs := flag.NewFlagSet("test", 0)
require.NoError(t, fl.Apply(tfs))
assert.Equal(t, test.expected, fl.String())
}
}
func TestUintFlagWithEnvVarHelpOutput(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.Setenv("APP_BAR", "2")
for _, test := range uintFlagTests {
fl := &UintFlag{Name: test.name, Sources: EnvVars("APP_BAR")}
output := fl.String()
expectedSuffix := withEnvHint([]string{"APP_BAR"}, "")
if !strings.HasSuffix(output, expectedSuffix) {
t.Errorf("%s does not end with"+expectedSuffix, output)
}
}
}
func TestUintFlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Uint64("myflag", 42, "doc")
cmd := &Command{flagSet: set}
fl := &UintFlag{Name: "myflag"}
require.Equal(t, uint64(42), cmd.Uint(fl.Name))
}
var uint64FlagTests = []struct {
name string
expected string
}{
{"gerfs", "--gerfs value\t(default: 8589934582)"},
{"G", "-G value\t(default: 8589934582)"},
}
func TestUint64FlagHelpOutput(t *testing.T) {
for _, test := range uint64FlagTests {
fl := UintFlag{Name: test.name, Value: 8589934582}
// create a temporary flag set to apply
tfs := flag.NewFlagSet("test", 0)
require.NoError(t, fl.Apply(tfs))
assert.Equal(t, test.expected, fl.String())
}
}
func TestUint64FlagWithEnvVarHelpOutput(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.Setenv("APP_BAR", "2")
for _, test := range uint64FlagTests {
fl := &UintFlag{Name: test.name, Sources: EnvVars("APP_BAR")}
output := fl.String()
expectedSuffix := withEnvHint([]string{"APP_BAR"}, "")
if !strings.HasSuffix(output, expectedSuffix) {
t.Errorf("%s does not end with"+expectedSuffix, output)
}
}
}
func TestUint64FlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)
set.Uint64("myflag", 42, "doc")
cmd := &Command{flagSet: set}
f := &UintFlag{Name: "myflag"}
require.Equal(t, uint64(42), cmd.Uint(f.Name))
}
var durationFlagTests = []struct {
name string
expected string
}{
{"hooting", "--hooting value\t(default: 1s)"},
{"H", "-H value\t(default: 1s)"},
}
func TestDurationFlagHelpOutput(t *testing.T) {
for _, test := range durationFlagTests {
fl := &DurationFlag{Name: test.name, Value: 1 * time.Second}
// create a temporary flag set to apply
tfs := flag.NewFlagSet("test", 0)
require.NoError(t, fl.Apply(tfs))
assert.Equal(t, test.expected, fl.String())
}
}
func TestDurationFlagWithEnvVarHelpOutput(t *testing.T) {
defer resetEnv(os.Environ())
os.Clearenv()
_ = os.Setenv("APP_BAR", "2h3m6s")
for _, test := range durationFlagTests {
fl := &DurationFlag{Name: test.name, Sources: EnvVars("APP_BAR")}
output := fl.String()
expectedSuffix := withEnvHint([]string{"APP_BAR"}, "")
if !strings.HasSuffix(output, expectedSuffix) {
t.Errorf("%s does not end with"+expectedSuffix, output)
}
}
}
func TestDurationFlagApply_SetsAllNames(t *testing.T) {
v := time.Second * 20
fl := DurationFlag{Name: "howmuch", Aliases: []string{"H", "whyyy"}, Destination: &v}
set := flag.NewFlagSet("test", 0)
_ = fl.Apply(set)
err := set.Parse([]string{"--howmuch", "30s", "-H", "5m", "--whyyy", "30h"})
assert.NoError(t, err)
assert.Equal(t, time.Hour*30, v)
}
func TestDurationFlagValueFromCommand(t *testing.T) {
set := flag.NewFlagSet("test", 0)