package globalconf
import (
"flag"
"io/ioutil"
"os"
"testing"
)
const envTestPrefix = "CONFTEST_"
func TestNewWithOptionsNoFilename(t *testing.T) {
opts := Options{EnvPrefix: envTestPrefix}
os.Setenv(envTestPrefix+"D", "EnvD")
flagD := flag.String("d", "default", "")
flagE := flag.Bool("e", true, "")
conf, err := NewWithOptions(&opts)
if err != nil {
t.Fatal(err)
}
conf.ParseAll()
if *flagD != "EnvD" {
t.Errorf("flagD found %v, expected 'EnvD'", *flagD)
}
if !*flagE {
t.Errorf("flagE found %v, expected true", *flagE)
}
}
func TestParse_Global(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"D", "EnvD")
os.Setenv(envTestPrefix+"E", "true")
os.Setenv(envTestPrefix+"F", "5.5")
flagA := flag.Bool("a", false, "")
flagB := flag.Float64("b", 0.0, "")
flagC := flag.String("c", "", "")
flagD := flag.String("d", "", "")
flagE := flag.Bool("e", false, "")
flagF := flag.Float64("f", 0.0, "")
parse(t, "./testdata/global.ini", envTestPrefix)
if !*flagA {
t.Errorf("flagA found %v, expected true", *flagA)
}
if *flagB != 5.6 {
t.Errorf("flagB found %v, expected 5.6", *flagB)
}
if *flagC != "Hello world" {
t.Errorf("flagC found %v, expected 'Hello world'", *flagC)
}
if *flagD != "EnvD" {
t.Errorf("flagD found %v, expected 'EnvD'", *flagD)
}
if !*flagE {
t.Errorf("flagE found %v, expected true", *flagE)
}
if *flagF != 5.5 {
t.Errorf("flagF found %v, expected 5.5", *flagF)
}
}
func TestParse_DashConversion(t *testing.T) {
resetForTesting("")
flagFooBar := flag.String("foo-bar", "", "")
os.Setenv("PREFIX_FOO_BAR", "baz")
opts := Options{EnvPrefix: "PREFIX_"}
conf, err := NewWithOptions(&opts)
if err != nil {
t.Fatal(err)
}
conf.ParseAll()
if *flagFooBar != "baz" {
t.Errorf("flagFooBar found %v, expected 5.5", *flagFooBar)
}
}
func TestParse_GlobalWithDottedFlagname(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"SOME_VALUE", "some-value")
flagSomeValue := flag.String("some.value", "", "")
parse(t, "./testdata/global.ini", envTestPrefix)
if *flagSomeValue != "some-value" {
t.Errorf("flagSomeValue found %v, some-value expected", *flagSomeValue)
}
}
func TestParse_GlobalOverwrite(t *testing.T) {
resetForTesting("-b=7.6")
flagB := flag.Float64("b", 0.0, "")
parse(t, "./testdata/global.ini", "")
if *flagB != 7.6 {
t.Errorf("flagB found %v, expected 7.6", *flagB)
}
}
func TestParse_Custom(t *testing.T) {
resetForTesting("")
os.Setenv(envTestPrefix+"CUSTOM_E", "Hello Env")
flagB := flag.Float64("b", 5.0, "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "dd", "")
flagE := custom.String("e", "ee", "")
Register(name, custom)
parse(t, "./testdata/custom.ini", envTestPrefix)
if *flagB != 5.0 {
t.Errorf("flagB found %v, expected 5.0", *flagB)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
if *flagE != "Hello Env" {
t.Errorf("flagE found %v, expected 'Hello Env'", *flagE)
}
}
func TestParse_CustomOverwrite(t *testing.T) {
resetForTesting("-b=6")
flagB := flag.Float64("b", 5.0, "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "dd", "")
Register(name, custom)
parse(t, "./testdata/custom.ini", "")
if *flagB != 6.0 {
t.Errorf("flagB found %v, expected 6.0", *flagB)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
}
func TestParse_GlobalAndCustom(t *testing.T) {
resetForTesting("")
flagA := flag.Bool("a", false, "")
flagB := flag.Float64("b", 0.0, "")
flagC := flag.String("c", "", "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "", "")
Register(name, custom)
parse(t, "./testdata/globalandcustom.ini", "")
if !*flagA {
t.Errorf("flagA found %v, expected true", *flagA)
}
if *flagB != 5.6 {
t.Errorf("flagB found %v, expected 5.6", *flagB)
}
if *flagC != "Hello world" {
t.Errorf("flagC found %v, expected 'Hello world'", *flagC)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
}
func TestParse_GlobalAndCustomOverwrite(t *testing.T) {
resetForTesting("-a=true", "-b=5", "-c=Hello")
flagA := flag.Bool("a", false, "")
flagB := flag.Float64("b", 0.0, "")
flagC := flag.String("c", "", "")
name := "custom"
custom := flag.NewFlagSet(name, flag.ExitOnError)
flagD := custom.String("d", "", "")
Register(name, custom)
parse(t, "./testdata/globalandcustom.ini", "")
if !*flagA {
t.Errorf("flagA found %v, expected true", *flagA)
}
if *flagB != 5.0 {
t.Errorf("flagB found %v, expected 5.0", *flagB)
}
if *flagC != "Hello" {
t.Errorf("flagC found %v, expected 'Hello'", *flagC)
}
if *flagD != "Hello d" {
t.Errorf("flagD found %v, expected 'Hello d'", *flagD)
}
}
func TestSet(t *testing.T) {
resetForTesting()
file, _ := ioutil.TempFile("", "")
conf := parse(t, file.Name(), "")
conf.Set("", &flag.Flag{Name: "a", Value: newFlagValue("test")})
flagA := flag.String("a", "", "")
parse(t, file.Name(), "")
if *flagA != "test" {
t.Errorf("flagA found %v, expected 'test'", *flagA)
}
}
func TestDelete(t *testing.T) {
resetForTesting()
file, _ := ioutil.TempFile("", "")
conf := parse(t, file.Name(), "")
conf.Set("", &flag.Flag{Name: "a", Value: newFlagValue("test")})
conf.Delete("", "a")
flagA := flag.String("a", "", "")
parse(t, file.Name(), "")
if *flagA != "" {
t.Errorf("flagNewA found %v, expected ''", *flagA)
}
}
func parse(t *testing.T, filename, envPrefix string) *GlobalConf {
opts := Options{
Filename: filename,
EnvPrefix: envPrefix,
}
conf, err := NewWithOptions(&opts)
if err != nil {
t.Error(err)
}
conf.ParseAll()
return conf
}
// Resets os.Args and the default flag set.
func resetForTesting(args ...string) {
os.Clearenv()
os.Args = append([]string{"cmd"}, args...)
flag.CommandLine = flag.NewFlagSet(os.Args[0], flag.ExitOnError)
}
type flagValue struct {
str string
}
func (f *flagValue) String() string {
return f.str
}
func (f *flagValue) Set(value string) error {
f.str = value
return nil
}
func newFlagValue(val string) *flagValue {
return &flagValue{str: val}
}
