spf13--viper/viper_test.go

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// Copyright © 2014 Steve Francia <spf@spf13.com>.
//
// Use of this source code is governed by an MIT-style
// license that can be found in the LICENSE file.
package viper
import (
"bytes"
"encoding/json"
"io"
"io/ioutil" //nolint:staticcheck
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"os"
"os/exec"
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"path"
"path/filepath"
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"reflect"
"runtime"
"sort"
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"strings"
"sync"
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"testing"
"time"
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"github.com/fsnotify/fsnotify"
"github.com/mitchellh/mapstructure"
"github.com/spf13/afero"
"github.com/spf13/cast"
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"github.com/spf13/pflag"
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"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/spf13/viper/internal/testutil"
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)
// var yamlExample = []byte(`Hacker: true
// name: steve
// hobbies:
// - skateboarding
// - snowboarding
// - go
// clothing:
// jacket: leather
// trousers: denim
// pants:
// size: large
// age: 35
// eyes : brown
// beard: true
// `)
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var yamlExampleWithExtras = []byte(`Existing: true
Bogus: true
`)
type testUnmarshalExtra struct {
Existing bool
}
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var tomlExample = []byte(`
title = "TOML Example"
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[ecs.test]
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[owner]
organization = "MongoDB"
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Bio = "MongoDB Chief Developer Advocate & Hacker at Large"
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dob = 1979-05-27T07:32:00Z # First class dates? Why not?`)
var dotenvExample = []byte(`
TITLE_DOTENV="DotEnv Example"
TYPE_DOTENV=donut
NAME_DOTENV=Cake`)
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var jsonExample = []byte(`{
"id": "0001",
"type": "donut",
"name": "Cake",
"ppu": 0.55,
"batters": {
"batter": [
{ "type": "Regular" },
{ "type": "Chocolate" },
{ "type": "Blueberry" },
{ "type": "Devil's Food" }
]
}
}`)
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var hclExample = []byte(`
id = "0001"
type = "donut"
name = "Cake"
ppu = 0.55
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foos {
foo {
key = 1
}
foo {
key = 2
}
foo {
key = 3
}
foo {
key = 4
}
}`)
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var propertiesExample = []byte(`
p_id: 0001
p_type: donut
p_name: Cake
p_ppu: 0.55
p_batters.batter.type: Regular
`)
var remoteExample = []byte(`{
"id":"0002",
"type":"cronut",
"newkey":"remote"
}`)
var iniExample = []byte(`; Package name
NAME = ini
; Package version
VERSION = v1
; Package import path
IMPORT_PATH = gopkg.in/%(NAME)s.%(VERSION)s
# Information about package author
# Bio can be written in multiple lines.
[author]
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NAME = Unknown ; Succeeding comment
E-MAIL = fake@localhost
GITHUB = https://github.com/%(NAME)s
BIO = """Gopher.
Coding addict.
Good man.
""" # Succeeding comment`)
func initConfigs() {
Reset()
var r io.Reader
SetConfigType("yaml")
r = bytes.NewReader(yamlExample)
unmarshalReader(r, v.config)
SetConfigType("json")
r = bytes.NewReader(jsonExample)
unmarshalReader(r, v.config)
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SetConfigType("hcl")
r = bytes.NewReader(hclExample)
unmarshalReader(r, v.config)
SetConfigType("properties")
r = bytes.NewReader(propertiesExample)
unmarshalReader(r, v.config)
SetConfigType("toml")
r = bytes.NewReader(tomlExample)
unmarshalReader(r, v.config)
SetConfigType("env")
r = bytes.NewReader(dotenvExample)
unmarshalReader(r, v.config)
SetConfigType("json")
remote := bytes.NewReader(remoteExample)
unmarshalReader(remote, v.kvstore)
SetConfigType("ini")
r = bytes.NewReader(iniExample)
unmarshalReader(r, v.config)
}
func initConfig(typ, config string) {
Reset()
SetConfigType(typ)
r := strings.NewReader(config)
if err := unmarshalReader(r, v.config); err != nil {
panic(err)
}
}
func initYAML() {
initConfig("yaml", string(yamlExample))
}
func initJSON() {
Reset()
SetConfigType("json")
r := bytes.NewReader(jsonExample)
unmarshalReader(r, v.config)
}
func initProperties() {
Reset()
SetConfigType("properties")
r := bytes.NewReader(propertiesExample)
unmarshalReader(r, v.config)
}
func initTOML() {
Reset()
SetConfigType("toml")
r := bytes.NewReader(tomlExample)
unmarshalReader(r, v.config)
}
func initDotEnv() {
Reset()
SetConfigType("env")
r := bytes.NewReader(dotenvExample)
unmarshalReader(r, v.config)
}
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func initHcl() {
Reset()
SetConfigType("hcl")
r := bytes.NewReader(hclExample)
unmarshalReader(r, v.config)
}
func initIni() {
Reset()
SetConfigType("ini")
r := bytes.NewReader(iniExample)
unmarshalReader(r, v.config)
}
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// make directories for testing
func initDirs(t *testing.T) (string, string, func()) {
var (
testDirs = []string{`a a`, `b`, `C_`}
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config = `improbable`
)
if runtime.GOOS != "windows" {
testDirs = append(testDirs, `d\d`)
}
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root, err := ioutil.TempDir("", "")
require.NoError(t, err, "Failed to create temporary directory")
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cleanup := true
defer func() {
if cleanup {
os.Chdir("..")
os.RemoveAll(root)
}
}()
assert.Nil(t, err)
err = os.Chdir(root)
require.Nil(t, err)
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for _, dir := range testDirs {
err = os.Mkdir(dir, 0o750)
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assert.Nil(t, err)
err = ioutil.WriteFile(
path.Join(dir, config+".toml"),
[]byte("key = \"value is "+dir+"\"\n"),
0o640)
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assert.Nil(t, err)
}
cleanup = false
return root, config, func() {
os.Chdir("..")
os.RemoveAll(root)
}
}
// stubs for PFlag Values
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type stringValue string
func newStringValue(val string, p *string) *stringValue {
*p = val
return (*stringValue)(p)
}
func (s *stringValue) Set(val string) error {
*s = stringValue(val)
return nil
}
func (s *stringValue) Type() string {
return "string"
}
func (s *stringValue) String() string {
return string(*s)
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}
func TestGetConfigFile(t *testing.T) {
t.Run("config file set", func(t *testing.T) {
fs := afero.NewMemMapFs()
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err := fs.Mkdir(testutil.AbsFilePath(t, "/etc/viper"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/etc/viper/config.yaml"))
require.NoError(t, err)
v := New()
v.SetFs(fs)
v.AddConfigPath("/etc/viper")
v.SetConfigFile(testutil.AbsFilePath(t, "/etc/viper/config.yaml"))
filename, err := v.getConfigFile()
assert.Equal(t, testutil.AbsFilePath(t, "/etc/viper/config.yaml"), filename)
assert.NoError(t, err)
})
t.Run("find file", func(t *testing.T) {
fs := afero.NewMemMapFs()
err := fs.Mkdir(testutil.AbsFilePath(t, "/etc/viper"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/etc/viper/config.yaml"))
require.NoError(t, err)
v := New()
v.SetFs(fs)
v.AddConfigPath("/etc/viper")
filename, err := v.getConfigFile()
assert.Equal(t, testutil.AbsFilePath(t, "/etc/viper/config.yaml"), filename)
assert.NoError(t, err)
})
t.Run("find files only", func(t *testing.T) {
fs := afero.NewMemMapFs()
err := fs.Mkdir(testutil.AbsFilePath(t, "/etc/config"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/etc/config/config.yaml"))
require.NoError(t, err)
v := New()
v.SetFs(fs)
v.AddConfigPath("/etc")
v.AddConfigPath("/etc/config")
filename, err := v.getConfigFile()
assert.Equal(t, testutil.AbsFilePath(t, "/etc/config/config.yaml"), filename)
assert.NoError(t, err)
})
t.Run("precedence", func(t *testing.T) {
fs := afero.NewMemMapFs()
err := fs.Mkdir(testutil.AbsFilePath(t, "/home/viper"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/home/viper/config.zml"))
require.NoError(t, err)
err = fs.Mkdir(testutil.AbsFilePath(t, "/etc/viper"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/etc/viper/config.bml"))
require.NoError(t, err)
err = fs.Mkdir(testutil.AbsFilePath(t, "/var/viper"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/var/viper/config.yaml"))
require.NoError(t, err)
v := New()
v.SetFs(fs)
v.AddConfigPath("/home/viper")
v.AddConfigPath("/etc/viper")
v.AddConfigPath("/var/viper")
filename, err := v.getConfigFile()
assert.Equal(t, testutil.AbsFilePath(t, "/var/viper/config.yaml"), filename)
assert.NoError(t, err)
})
t.Run("without extension", func(t *testing.T) {
fs := afero.NewMemMapFs()
err := fs.Mkdir(testutil.AbsFilePath(t, "/etc/viper"), 0o777)
require.NoError(t, err)
_, err = fs.Create(testutil.AbsFilePath(t, "/etc/viper/.dotfilenoext"))
require.NoError(t, err)
v := New()
v.SetFs(fs)
v.AddConfigPath("/etc/viper")
v.SetConfigName(".dotfilenoext")
v.SetConfigType("yaml")
filename, err := v.getConfigFile()
assert.Equal(t, testutil.AbsFilePath(t, "/etc/viper/.dotfilenoext"), filename)
assert.NoError(t, err)
})
t.Run("without extension and config type", func(t *testing.T) {
fs := afero.NewMemMapFs()
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err := fs.Mkdir(testutil.AbsFilePath(t, "/etc/viper"), 0o777)
require.NoError(t, err)
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_, err = fs.Create(testutil.AbsFilePath(t, "/etc/viper/.dotfilenoext"))
require.NoError(t, err)
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v := New()
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v.SetFs(fs)
v.AddConfigPath("/etc/viper")
v.SetConfigName(".dotfilenoext")
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_, err = v.getConfigFile()
// unless config type is set, files without extension
// are not considered
assert.Error(t, err)
})
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}
func TestReadInConfig(t *testing.T) {
t.Run("config file set", func(t *testing.T) {
fs := afero.NewMemMapFs()
err := fs.Mkdir("/etc/viper", 0o777)
require.NoError(t, err)
file, err := fs.Create(testutil.AbsFilePath(t, "/etc/viper/config.yaml"))
require.NoError(t, err)
_, err = file.Write([]byte(`key: value`))
require.NoError(t, err)
file.Close()
v := New()
v.SetFs(fs)
v.SetConfigFile(testutil.AbsFilePath(t, "/etc/viper/config.yaml"))
err = v.ReadInConfig()
require.NoError(t, err)
assert.Equal(t, "value", v.Get("key"))
})
t.Run("find file", func(t *testing.T) {
fs := afero.NewMemMapFs()
err := fs.Mkdir(testutil.AbsFilePath(t, "/etc/viper"), 0o777)
require.NoError(t, err)
file, err := fs.Create(testutil.AbsFilePath(t, "/etc/viper/config.yaml"))
require.NoError(t, err)
_, err = file.Write([]byte(`key: value`))
require.NoError(t, err)
file.Close()
v := New()
v.SetFs(fs)
v.AddConfigPath("/etc/viper")
err = v.ReadInConfig()
require.NoError(t, err)
assert.Equal(t, "value", v.Get("key"))
})
}
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func TestDefault(t *testing.T) {
SetDefault("age", 45)
assert.Equal(t, 45, Get("age"))
SetDefault("clothing.jacket", "slacks")
assert.Equal(t, "slacks", Get("clothing.jacket"))
SetConfigType("yaml")
err := ReadConfig(bytes.NewBuffer(yamlExample))
assert.NoError(t, err)
assert.Equal(t, "leather", Get("clothing.jacket"))
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}
func TestUnmarshaling(t *testing.T) {
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SetConfigType("yaml")
r := bytes.NewReader(yamlExample)
unmarshalReader(r, v.config)
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assert.True(t, InConfig("name"))
assert.True(t, InConfig("clothing.jacket"))
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assert.False(t, InConfig("state"))
assert.False(t, InConfig("clothing.hat"))
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assert.Equal(t, "steve", Get("name"))
assert.Equal(t, []interface{}{"skateboarding", "snowboarding", "go"}, Get("hobbies"))
assert.Equal(t, map[string]interface{}{"jacket": "leather", "trousers": "denim", "pants": map[string]interface{}{"size": "large"}}, Get("clothing"))
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assert.Equal(t, 35, Get("age"))
}
func TestUnmarshalExact(t *testing.T) {
vip := New()
target := &testUnmarshalExtra{}
vip.SetConfigType("yaml")
r := bytes.NewReader(yamlExampleWithExtras)
vip.ReadConfig(r)
err := vip.UnmarshalExact(target)
if err == nil {
t.Fatal("UnmarshalExact should error when populating a struct from a conf that contains unused fields")
}
}
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func TestOverrides(t *testing.T) {
Set("age", 40)
assert.Equal(t, 40, Get("age"))
}
func TestDefaultPost(t *testing.T) {
assert.NotEqual(t, "NYC", Get("state"))
SetDefault("state", "NYC")
assert.Equal(t, "NYC", Get("state"))
}
func TestAliases(t *testing.T) {
RegisterAlias("years", "age")
assert.Equal(t, 40, Get("years"))
Set("years", 45)
assert.Equal(t, 45, Get("age"))
}
func TestAliasInConfigFile(t *testing.T) {
// the config file specifies "beard". If we make this an alias for
// "hasbeard", we still want the old config file to work with beard.
RegisterAlias("beard", "hasbeard")
assert.Equal(t, true, Get("hasbeard"))
Set("hasbeard", false)
assert.Equal(t, false, Get("beard"))
}
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func TestYML(t *testing.T) {
initYAML()
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assert.Equal(t, "steve", Get("name"))
}
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func TestJSON(t *testing.T) {
initJSON()
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assert.Equal(t, "0001", Get("id"))
}
func TestProperties(t *testing.T) {
initProperties()
assert.Equal(t, "0001", Get("p_id"))
}
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func TestTOML(t *testing.T) {
initTOML()
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assert.Equal(t, "TOML Example", Get("title"))
}
func TestDotEnv(t *testing.T) {
initDotEnv()
assert.Equal(t, "DotEnv Example", Get("title_dotenv"))
}
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func TestHCL(t *testing.T) {
initHcl()
assert.Equal(t, "0001", Get("id"))
assert.Equal(t, 0.55, Get("ppu"))
assert.Equal(t, "donut", Get("type"))
assert.Equal(t, "Cake", Get("name"))
Set("id", "0002")
assert.Equal(t, "0002", Get("id"))
assert.NotEqual(t, "cronut", Get("type"))
}
func TestIni(t *testing.T) {
initIni()
assert.Equal(t, "ini", Get("default.name"))
}
func TestRemotePrecedence(t *testing.T) {
initJSON()
remote := bytes.NewReader(remoteExample)
assert.Equal(t, "0001", Get("id"))
unmarshalReader(remote, v.kvstore)
assert.Equal(t, "0001", Get("id"))
assert.NotEqual(t, "cronut", Get("type"))
assert.Equal(t, "remote", Get("newkey"))
Set("newkey", "newvalue")
assert.NotEqual(t, "remote", Get("newkey"))
assert.Equal(t, "newvalue", Get("newkey"))
Set("newkey", "remote")
}
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func TestEnv(t *testing.T) {
initJSON()
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BindEnv("id")
BindEnv("f", "FOOD", "OLD_FOOD")
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testutil.Setenv(t, "ID", "13")
testutil.Setenv(t, "FOOD", "apple")
testutil.Setenv(t, "OLD_FOOD", "banana")
testutil.Setenv(t, "NAME", "crunk")
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assert.Equal(t, "13", Get("id"))
assert.Equal(t, "apple", Get("f"))
assert.Equal(t, "Cake", Get("name"))
AutomaticEnv()
assert.Equal(t, "crunk", Get("name"))
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}
func TestMultipleEnv(t *testing.T) {
initJSON()
BindEnv("f", "FOOD", "OLD_FOOD")
testutil.Setenv(t, "OLD_FOOD", "banana")
assert.Equal(t, "banana", Get("f"))
}
func TestEmptyEnv(t *testing.T) {
initJSON()
BindEnv("type") // Empty environment variable
BindEnv("name") // Bound, but not set environment variable
testutil.Setenv(t, "TYPE", "")
assert.Equal(t, "donut", Get("type"))
assert.Equal(t, "Cake", Get("name"))
}
func TestEmptyEnv_Allowed(t *testing.T) {
initJSON()
AllowEmptyEnv(true)
BindEnv("type") // Empty environment variable
BindEnv("name") // Bound, but not set environment variable
testutil.Setenv(t, "TYPE", "")
assert.Equal(t, "", Get("type"))
assert.Equal(t, "Cake", Get("name"))
}
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func TestEmptyMap_Allowed(t *testing.T) {
initTOML()
AllowEmptyMap(true)
allkeys := sort.StringSlice(AllKeys())
allkeys.Sort()
assert.Equal(t, sort.StringSlice(sort.StringSlice{"ecs.test", "owner.bio", "owner.dob", "owner.organization", "title"}), allkeys)
}
func TestEnvPrefix(t *testing.T) {
initJSON()
SetEnvPrefix("foo") // will be uppercased automatically
BindEnv("id")
BindEnv("f", "FOOD") // not using prefix
testutil.Setenv(t, "FOO_ID", "13")
testutil.Setenv(t, "FOOD", "apple")
testutil.Setenv(t, "FOO_NAME", "crunk")
assert.Equal(t, "13", Get("id"))
assert.Equal(t, "apple", Get("f"))
assert.Equal(t, "Cake", Get("name"))
AutomaticEnv()
assert.Equal(t, "crunk", Get("name"))
}
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func TestAutoEnv(t *testing.T) {
Reset()
AutomaticEnv()
testutil.Setenv(t, "FOO_BAR", "13")
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assert.Equal(t, "13", Get("foo_bar"))
}
func TestAutoEnvWithPrefix(t *testing.T) {
Reset()
AutomaticEnv()
SetEnvPrefix("Baz")
testutil.Setenv(t, "BAZ_BAR", "13")
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assert.Equal(t, "13", Get("bar"))
}
func TestSetEnvKeyReplacer(t *testing.T) {
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Reset()
AutomaticEnv()
testutil.Setenv(t, "REFRESH_INTERVAL", "30s")
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replacer := strings.NewReplacer("-", "_")
SetEnvKeyReplacer(replacer)
assert.Equal(t, "30s", Get("refresh-interval"))
}
func TestEnvKeyReplacer(t *testing.T) {
v := NewWithOptions(EnvKeyReplacer(strings.NewReplacer("-", "_")))
v.AutomaticEnv()
testutil.Setenv(t, "REFRESH_INTERVAL", "30s")
assert.Equal(t, "30s", v.Get("refresh-interval"))
}
func TestAllKeys(t *testing.T) {
initConfigs()
ks := sort.StringSlice{
"title",
"author.bio",
"author.e-mail",
"author.github",
"author.name",
"newkey",
"owner.organization",
"owner.dob",
"owner.bio",
"name",
"beard",
"ppu",
"batters.batter",
"hobbies",
"clothing.jacket",
"clothing.trousers",
"default.import_path",
"default.name",
"default.version",
"clothing.pants.size",
"age",
"hacker",
"id",
"type",
"eyes",
"p_id",
"p_ppu",
"p_batters.batter.type",
"p_type",
"p_name",
"foos",
"title_dotenv",
"type_dotenv",
"name_dotenv",
}
dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
all := map[string]interface{}{
"owner": map[string]interface{}{
"organization": "MongoDB",
"bio": "MongoDB Chief Developer Advocate & Hacker at Large",
"dob": dob,
},
"title": "TOML Example",
"author": map[string]interface{}{
"e-mail": "fake@localhost",
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"github": "https://github.com/Unknown",
"name": "Unknown",
"bio": "Gopher.\nCoding addict.\nGood man.\n",
},
"ppu": 0.55,
"eyes": "brown",
"clothing": map[string]interface{}{
"trousers": "denim",
"jacket": "leather",
"pants": map[string]interface{}{"size": "large"},
},
"default": map[string]interface{}{
"import_path": "gopkg.in/ini.v1",
"name": "ini",
"version": "v1",
},
"id": "0001",
"batters": map[string]interface{}{
"batter": []interface{}{
map[string]interface{}{"type": "Regular"},
map[string]interface{}{"type": "Chocolate"},
map[string]interface{}{"type": "Blueberry"},
map[string]interface{}{"type": "Devil's Food"},
},
},
"hacker": true,
"beard": true,
"hobbies": []interface{}{
"skateboarding",
"snowboarding",
"go",
},
"age": 35,
"type": "donut",
"newkey": "remote",
"name": "Cake",
"p_id": "0001",
"p_ppu": "0.55",
"p_name": "Cake",
"p_batters": map[string]interface{}{
"batter": map[string]interface{}{"type": "Regular"},
},
"p_type": "donut",
"foos": []map[string]interface{}{
{
"foo": []map[string]interface{}{
{"key": 1},
{"key": 2},
{"key": 3},
{"key": 4},
},
},
},
"title_dotenv": "DotEnv Example",
"type_dotenv": "donut",
"name_dotenv": "Cake",
}
allkeys := sort.StringSlice(AllKeys())
allkeys.Sort()
ks.Sort()
assert.Equal(t, ks, allkeys)
assert.Equal(t, all, AllSettings())
}
func TestAllKeysWithEnv(t *testing.T) {
v := New()
// bind and define environment variables (including a nested one)
v.BindEnv("id")
v.BindEnv("foo.bar")
v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
testutil.Setenv(t, "ID", "13")
testutil.Setenv(t, "FOO_BAR", "baz")
expectedKeys := sort.StringSlice{"id", "foo.bar"}
expectedKeys.Sort()
keys := sort.StringSlice(v.AllKeys())
keys.Sort()
assert.Equal(t, expectedKeys, keys)
}
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func TestAliasesOfAliases(t *testing.T) {
Set("Title", "Checking Case")
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RegisterAlias("Foo", "Bar")
RegisterAlias("Bar", "Title")
assert.Equal(t, "Checking Case", Get("FOO"))
}
func TestRecursiveAliases(t *testing.T) {
RegisterAlias("Baz", "Roo")
RegisterAlias("Roo", "baz")
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}
func TestUnmarshal(t *testing.T) {
SetDefault("port", 1313)
Set("name", "Steve")
Set("duration", "1s1ms")
Set("modes", []int{1, 2, 3})
type config struct {
Port int
Name string
Duration time.Duration
Modes []int
}
var C config
err := Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(
t,
&config{
Name: "Steve",
Port: 1313,
Duration: time.Second + time.Millisecond,
Modes: []int{1, 2, 3},
},
&C,
)
Set("port", 1234)
err = Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(
t,
&config{
Name: "Steve",
Port: 1234,
Duration: time.Second + time.Millisecond,
Modes: []int{1, 2, 3},
},
&C,
)
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}
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func TestUnmarshalWithDecoderOptions(t *testing.T) {
Set("credentials", "{\"foo\":\"bar\"}")
opt := DecodeHook(mapstructure.ComposeDecodeHookFunc(
mapstructure.StringToTimeDurationHookFunc(),
mapstructure.StringToSliceHookFunc(","),
// Custom Decode Hook Function
func(rf reflect.Kind, rt reflect.Kind, data interface{}) (interface{}, error) {
if rf != reflect.String || rt != reflect.Map {
return data, nil
}
m := map[string]string{}
raw := data.(string)
if raw == "" {
return m, nil
}
return m, json.Unmarshal([]byte(raw), &m)
},
))
type config struct {
Credentials map[string]string
}
var C config
err := Unmarshal(&C, opt)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, &config{
Credentials: map[string]string{"foo": "bar"},
}, &C)
}
func TestBindPFlags(t *testing.T) {
v := New() // create independent Viper object
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
testValues := map[string]*string{
"host": nil,
"port": nil,
"endpoint": nil,
}
mutatedTestValues := map[string]string{
"host": "localhost",
"port": "6060",
"endpoint": "/public",
}
for name := range testValues {
testValues[name] = flagSet.String(name, "", "test")
}
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
flagSet.VisitAll(func(flag *pflag.Flag) {
flag.Value.Set(mutatedTestValues[flag.Name])
flag.Changed = true
})
for name, expected := range mutatedTestValues {
assert.Equal(t, expected, v.Get(name))
}
}
//nolint:dupl
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func TestBindPFlagsStringSlice(t *testing.T) {
tests := []struct {
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Expected []string
Value string
}{
{[]string{}, ""},
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{[]string{"jeden"}, "jeden"},
{[]string{"dwa", "trzy"}, "dwa,trzy"},
{[]string{"cztery", "piec , szesc"}, "cztery,\"piec , szesc\""},
}
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v := New() // create independent Viper object
defaultVal := []string{"default"}
v.SetDefault("stringslice", defaultVal)
for _, testValue := range tests {
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
flagSet.StringSlice("stringslice", testValue.Expected, "test")
for _, changed := range []bool{true, false} {
flagSet.VisitAll(func(f *pflag.Flag) {
f.Value.Set(testValue.Value)
f.Changed = changed
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})
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
type TestStr struct {
StringSlice []string
}
val := &TestStr{}
if err := v.Unmarshal(val); err != nil {
t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err)
}
if changed {
assert.Equal(t, testValue.Expected, val.StringSlice)
assert.Equal(t, testValue.Expected, v.Get("stringslice"))
} else {
assert.Equal(t, defaultVal, val.StringSlice)
}
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}
}
}
//nolint:dupl
func TestBindPFlagsStringArray(t *testing.T) {
tests := []struct {
Expected []string
Value string
}{
{[]string{}, ""},
{[]string{"jeden"}, "jeden"},
{[]string{"dwa,trzy"}, "dwa,trzy"},
{[]string{"cztery,\"piec , szesc\""}, "cztery,\"piec , szesc\""},
}
v := New() // create independent Viper object
defaultVal := []string{"default"}
v.SetDefault("stringarray", defaultVal)
for _, testValue := range tests {
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
flagSet.StringArray("stringarray", testValue.Expected, "test")
for _, changed := range []bool{true, false} {
flagSet.VisitAll(func(f *pflag.Flag) {
f.Value.Set(testValue.Value)
f.Changed = changed
})
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
type TestStr struct {
StringArray []string
}
val := &TestStr{}
if err := v.Unmarshal(val); err != nil {
t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err)
}
if changed {
assert.Equal(t, testValue.Expected, val.StringArray)
assert.Equal(t, testValue.Expected, v.Get("stringarray"))
} else {
assert.Equal(t, defaultVal, val.StringArray)
}
}
}
}
//nolint:dupl
func TestBindPFlagsIntSlice(t *testing.T) {
tests := []struct {
Expected []int
Value string
}{
{[]int{}, ""},
{[]int{1}, "1"},
{[]int{2, 3}, "2,3"},
}
v := New() // create independent Viper object
defaultVal := []int{0}
v.SetDefault("intslice", defaultVal)
for _, testValue := range tests {
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
flagSet.IntSlice("intslice", testValue.Expected, "test")
for _, changed := range []bool{true, false} {
flagSet.VisitAll(func(f *pflag.Flag) {
f.Value.Set(testValue.Value)
f.Changed = changed
})
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
type TestInt struct {
IntSlice []int
}
val := &TestInt{}
if err := v.Unmarshal(val); err != nil {
t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err)
}
if changed {
assert.Equal(t, testValue.Expected, val.IntSlice)
assert.Equal(t, testValue.Expected, v.Get("intslice"))
} else {
assert.Equal(t, defaultVal, val.IntSlice)
}
}
}
}
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func TestBindPFlag(t *testing.T) {
testString := "testing"
testValue := newStringValue(testString, &testString)
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flag := &pflag.Flag{
Name: "testflag",
Value: testValue,
Changed: false,
}
BindPFlag("testvalue", flag)
assert.Equal(t, testString, Get("testvalue"))
flag.Value.Set("testing_mutate")
flag.Changed = true // hack for pflag usage
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assert.Equal(t, "testing_mutate", Get("testvalue"))
}
func TestBindPFlagDetectNilFlag(t *testing.T) {
result := BindPFlag("testvalue", nil)
assert.Error(t, result)
}
func TestBindPFlagStringToString(t *testing.T) {
tests := []struct {
Expected map[string]string
Value string
}{
{map[string]string{}, ""},
{map[string]string{"yo": "hi"}, "yo=hi"},
{map[string]string{"yo": "hi", "oh": "hi=there"}, "yo=hi,oh=hi=there"},
{map[string]string{"yo": ""}, "yo="},
{map[string]string{"yo": "", "oh": "hi=there"}, "yo=,oh=hi=there"},
}
v := New() // create independent Viper object
defaultVal := map[string]string{}
v.SetDefault("stringtostring", defaultVal)
for _, testValue := range tests {
flagSet := pflag.NewFlagSet("test", pflag.ContinueOnError)
flagSet.StringToString("stringtostring", testValue.Expected, "test")
for _, changed := range []bool{true, false} {
flagSet.VisitAll(func(f *pflag.Flag) {
f.Value.Set(testValue.Value)
f.Changed = changed
})
err := v.BindPFlags(flagSet)
if err != nil {
t.Fatalf("error binding flag set, %v", err)
}
type TestMap struct {
StringToString map[string]string
}
val := &TestMap{}
if err := v.Unmarshal(val); err != nil {
t.Fatalf("%+#v cannot unmarshal: %s", testValue.Value, err)
}
if changed {
assert.Equal(t, testValue.Expected, val.StringToString)
} else {
assert.Equal(t, defaultVal, val.StringToString)
}
}
}
}
func TestBoundCaseSensitivity(t *testing.T) {
assert.Equal(t, "brown", Get("eyes"))
BindEnv("eYEs", "TURTLE_EYES")
testutil.Setenv(t, "TURTLE_EYES", "blue")
assert.Equal(t, "blue", Get("eyes"))
testString := "green"
testValue := newStringValue(testString, &testString)
flag := &pflag.Flag{
Name: "eyeballs",
Value: testValue,
Changed: true,
}
BindPFlag("eYEs", flag)
assert.Equal(t, "green", Get("eyes"))
}
func TestSizeInBytes(t *testing.T) {
input := map[string]uint{
"": 0,
"b": 0,
"12 bytes": 0,
"200000000000gb": 0,
"12 b": 12,
"43 MB": 43 * (1 << 20),
"10mb": 10 * (1 << 20),
"1gb": 1 << 30,
}
for str, expected := range input {
assert.Equal(t, expected, parseSizeInBytes(str), str)
}
}
func TestFindsNestedKeys(t *testing.T) {
initConfigs()
dob, _ := time.Parse(time.RFC3339, "1979-05-27T07:32:00Z")
Set("super", map[string]interface{}{
"deep": map[string]interface{}{
"nested": "value",
},
})
expected := map[string]interface{}{
"super": map[string]interface{}{
"deep": map[string]interface{}{
"nested": "value",
},
},
"super.deep": map[string]interface{}{
"nested": "value",
},
"super.deep.nested": "value",
"owner.organization": "MongoDB",
"batters.batter": []interface{}{
map[string]interface{}{
"type": "Regular",
},
map[string]interface{}{
"type": "Chocolate",
},
map[string]interface{}{
"type": "Blueberry",
},
map[string]interface{}{
"type": "Devil's Food",
},
},
"hobbies": []interface{}{
"skateboarding", "snowboarding", "go",
},
"TITLE_DOTENV": "DotEnv Example",
"TYPE_DOTENV": "donut",
"NAME_DOTENV": "Cake",
"title": "TOML Example",
"newkey": "remote",
"batters": map[string]interface{}{
"batter": []interface{}{
map[string]interface{}{
"type": "Regular",
},
map[string]interface{}{
"type": "Chocolate",
},
map[string]interface{}{
"type": "Blueberry",
},
map[string]interface{}{
"type": "Devil's Food",
},
},
},
"eyes": "brown",
"age": 35,
"owner": map[string]interface{}{
"organization": "MongoDB",
"bio": "MongoDB Chief Developer Advocate & Hacker at Large",
"dob": dob,
},
"owner.bio": "MongoDB Chief Developer Advocate & Hacker at Large",
"type": "donut",
"id": "0001",
"name": "Cake",
"hacker": true,
"ppu": 0.55,
"clothing": map[string]interface{}{
"jacket": "leather",
"trousers": "denim",
"pants": map[string]interface{}{
"size": "large",
},
},
"clothing.jacket": "leather",
"clothing.pants.size": "large",
"clothing.trousers": "denim",
"owner.dob": dob,
"beard": true,
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"foos": []map[string]interface{}{
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{
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"foo": []map[string]interface{}{
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{
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"key": 1,
},
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{
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"key": 2,
},
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{
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"key": 3,
},
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{
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"key": 4,
},
},
},
},
}
for key, expectedValue := range expected {
assert.Equal(t, expectedValue, v.Get(key))
}
}
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func TestReadBufConfig(t *testing.T) {
v := New()
v.SetConfigType("yaml")
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v.ReadConfig(bytes.NewBuffer(yamlExample))
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t.Log(v.AllKeys())
assert.True(t, v.InConfig("name"))
assert.True(t, v.InConfig("clothing.jacket"))
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assert.False(t, v.InConfig("state"))
assert.False(t, v.InConfig("clothing.hat"))
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assert.Equal(t, "steve", v.Get("name"))
assert.Equal(t, []interface{}{"skateboarding", "snowboarding", "go"}, v.Get("hobbies"))
assert.Equal(t, map[string]interface{}{"jacket": "leather", "trousers": "denim", "pants": map[string]interface{}{"size": "large"}}, v.Get("clothing"))
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assert.Equal(t, 35, v.Get("age"))
}
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func TestIsSet(t *testing.T) {
v := New()
v.SetConfigType("yaml")
/* config and defaults */
v.ReadConfig(bytes.NewBuffer(yamlExample))
v.SetDefault("clothing.shoes", "sneakers")
assert.True(t, v.IsSet("clothing"))
assert.True(t, v.IsSet("clothing.jacket"))
assert.False(t, v.IsSet("clothing.jackets"))
assert.True(t, v.IsSet("clothing.shoes"))
/* state change */
assert.False(t, v.IsSet("helloworld"))
v.Set("helloworld", "fubar")
assert.True(t, v.IsSet("helloworld"))
/* env */
v.SetEnvKeyReplacer(strings.NewReplacer(".", "_"))
v.BindEnv("eyes")
v.BindEnv("foo")
v.BindEnv("clothing.hat")
v.BindEnv("clothing.hats")
testutil.Setenv(t, "FOO", "bar")
testutil.Setenv(t, "CLOTHING_HAT", "bowler")
assert.True(t, v.IsSet("eyes")) // in the config file
assert.True(t, v.IsSet("foo")) // in the environment
assert.True(t, v.IsSet("clothing.hat")) // in the environment
assert.False(t, v.IsSet("clothing.hats")) // not defined
/* flags */
flagset := pflag.NewFlagSet("testisset", pflag.ContinueOnError)
flagset.Bool("foobaz", false, "foobaz")
flagset.Bool("barbaz", false, "barbaz")
foobaz, barbaz := flagset.Lookup("foobaz"), flagset.Lookup("barbaz")
v.BindPFlag("foobaz", foobaz)
v.BindPFlag("barbaz", barbaz)
barbaz.Value.Set("true")
barbaz.Changed = true // hack for pflag usage
assert.False(t, v.IsSet("foobaz"))
assert.True(t, v.IsSet("barbaz"))
}
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func TestDirsSearch(t *testing.T) {
root, config, cleanup := initDirs(t)
defer cleanup()
v := New()
v.SetConfigName(config)
v.SetDefault(`key`, `default`)
entries, err := ioutil.ReadDir(root)
assert.Nil(t, err)
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for _, e := range entries {
if e.IsDir() {
v.AddConfigPath(e.Name())
}
}
err = v.ReadInConfig()
assert.Nil(t, err)
assert.Equal(t, `value is `+filepath.Base(v.configPaths[0]), v.GetString(`key`))
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}
func TestWrongDirsSearchNotFound(t *testing.T) {
_, config, cleanup := initDirs(t)
defer cleanup()
v := New()
v.SetConfigName(config)
v.SetDefault(`key`, `default`)
v.AddConfigPath(`whattayoutalkingbout`)
v.AddConfigPath(`thispathaintthere`)
err := v.ReadInConfig()
assert.Equal(t, reflect.TypeOf(ConfigFileNotFoundError{"", ""}), reflect.TypeOf(err))
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// Even though config did not load and the error might have
// been ignored by the client, the default still loads
assert.Equal(t, `default`, v.GetString(`key`))
}
func TestWrongDirsSearchNotFoundForMerge(t *testing.T) {
_, config, cleanup := initDirs(t)
defer cleanup()
v := New()
v.SetConfigName(config)
v.SetDefault(`key`, `default`)
v.AddConfigPath(`whattayoutalkingbout`)
v.AddConfigPath(`thispathaintthere`)
err := v.MergeInConfig()
assert.Equal(t, reflect.TypeOf(ConfigFileNotFoundError{"", ""}), reflect.TypeOf(err))
// Even though config did not load and the error might have
// been ignored by the client, the default still loads
assert.Equal(t, `default`, v.GetString(`key`))
}
func TestSub(t *testing.T) {
v := New()
v.SetConfigType("yaml")
v.ReadConfig(bytes.NewBuffer(yamlExample))
subv := v.Sub("clothing")
assert.Equal(t, v.Get("clothing.pants.size"), subv.Get("pants.size"))
subv = v.Sub("clothing.pants")
assert.Equal(t, v.Get("clothing.pants.size"), subv.Get("size"))
subv = v.Sub("clothing.pants.size")
assert.Equal(t, (*Viper)(nil), subv)
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subv = v.Sub("missing.key")
assert.Equal(t, (*Viper)(nil), subv)
}
var hclWriteExpected = []byte(`"foos" = {
"foo" = {
"key" = 1
}
"foo" = {
"key" = 2
}
"foo" = {
"key" = 3
}
"foo" = {
"key" = 4
}
}
"id" = "0001"
"name" = "Cake"
"ppu" = 0.55
"type" = "donut"`)
var jsonWriteExpected = []byte(`{
"batters": {
"batter": [
{
"type": "Regular"
},
{
"type": "Chocolate"
},
{
"type": "Blueberry"
},
{
"type": "Devil's Food"
}
]
},
"id": "0001",
"name": "Cake",
"ppu": 0.55,
"type": "donut"
}`)
var propertiesWriteExpected = []byte(`p_id = 0001
p_type = donut
p_name = Cake
p_ppu = 0.55
p_batters.batter.type = Regular
`)
// var yamlWriteExpected = []byte(`age: 35
// beard: true
// clothing:
// jacket: leather
// pants:
// size: large
// trousers: denim
// eyes: brown
// hacker: true
// hobbies:
// - skateboarding
// - snowboarding
// - go
// name: steve
// `)
func TestWriteConfig(t *testing.T) {
fs := afero.NewMemMapFs()
testCases := map[string]struct {
configName string
inConfigType string
outConfigType string
fileName string
input []byte
expectedContent []byte
}{
"hcl with file extension": {
configName: "c",
inConfigType: "hcl",
outConfigType: "hcl",
fileName: "c.hcl",
input: hclExample,
expectedContent: hclWriteExpected,
},
"hcl without file extension": {
configName: "c",
inConfigType: "hcl",
outConfigType: "hcl",
fileName: "c",
input: hclExample,
expectedContent: hclWriteExpected,
},
"hcl with file extension and mismatch type": {
configName: "c",
inConfigType: "hcl",
outConfigType: "json",
fileName: "c.hcl",
input: hclExample,
expectedContent: hclWriteExpected,
},
"json with file extension": {
configName: "c",
inConfigType: "json",
outConfigType: "json",
fileName: "c.json",
input: jsonExample,
expectedContent: jsonWriteExpected,
},
"json without file extension": {
configName: "c",
inConfigType: "json",
outConfigType: "json",
fileName: "c",
input: jsonExample,
expectedContent: jsonWriteExpected,
},
"json with file extension and mismatch type": {
configName: "c",
inConfigType: "json",
outConfigType: "hcl",
fileName: "c.json",
input: jsonExample,
expectedContent: jsonWriteExpected,
},
"properties with file extension": {
configName: "c",
inConfigType: "properties",
outConfigType: "properties",
fileName: "c.properties",
input: propertiesExample,
expectedContent: propertiesWriteExpected,
},
"properties without file extension": {
configName: "c",
inConfigType: "properties",
outConfigType: "properties",
fileName: "c",
input: propertiesExample,
expectedContent: propertiesWriteExpected,
},
"yaml with file extension": {
configName: "c",
inConfigType: "yaml",
outConfigType: "yaml",
fileName: "c.yaml",
input: yamlExample,
expectedContent: yamlWriteExpected,
},
"yaml without file extension": {
configName: "c",
inConfigType: "yaml",
outConfigType: "yaml",
fileName: "c",
input: yamlExample,
expectedContent: yamlWriteExpected,
},
"yaml with file extension and mismatch type": {
configName: "c",
inConfigType: "yaml",
outConfigType: "json",
fileName: "c.yaml",
input: yamlExample,
expectedContent: yamlWriteExpected,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
v := New()
v.SetFs(fs)
v.SetConfigName(tc.fileName)
v.SetConfigType(tc.inConfigType)
err := v.ReadConfig(bytes.NewBuffer(tc.input))
if err != nil {
t.Fatal(err)
}
v.SetConfigType(tc.outConfigType)
if err := v.WriteConfigAs(tc.fileName); err != nil {
t.Fatal(err)
}
read, err := afero.ReadFile(fs, tc.fileName)
if err != nil {
t.Fatal(err)
}
assert.Equal(t, tc.expectedContent, read)
})
}
}
func TestWriteConfigTOML(t *testing.T) {
fs := afero.NewMemMapFs()
testCases := map[string]struct {
configName string
configType string
fileName string
input []byte
}{
"with file extension": {
configName: "c",
configType: "toml",
fileName: "c.toml",
input: tomlExample,
},
"without file extension": {
configName: "c",
configType: "toml",
fileName: "c",
input: tomlExample,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
v := New()
v.SetFs(fs)
v.SetConfigName(tc.configName)
v.SetConfigType(tc.configType)
err := v.ReadConfig(bytes.NewBuffer(tc.input))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs(tc.fileName); err != nil {
t.Fatal(err)
}
// The TOML String method does not order the contents.
// Therefore, we must read the generated file and compare the data.
v2 := New()
v2.SetFs(fs)
v2.SetConfigName(tc.configName)
v2.SetConfigType(tc.configType)
v2.SetConfigFile(tc.fileName)
err = v2.ReadInConfig()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, v.GetString("title"), v2.GetString("title"))
assert.Equal(t, v.GetString("owner.bio"), v2.GetString("owner.bio"))
assert.Equal(t, v.GetString("owner.dob"), v2.GetString("owner.dob"))
assert.Equal(t, v.GetString("owner.organization"), v2.GetString("owner.organization"))
})
}
}
func TestWriteConfigDotEnv(t *testing.T) {
fs := afero.NewMemMapFs()
testCases := map[string]struct {
configName string
configType string
fileName string
input []byte
}{
"with file extension": {
configName: "c",
configType: "env",
fileName: "c.env",
input: dotenvExample,
},
"without file extension": {
configName: "c",
configType: "env",
fileName: "c",
input: dotenvExample,
},
}
for name, tc := range testCases {
t.Run(name, func(t *testing.T) {
v := New()
v.SetFs(fs)
v.SetConfigName(tc.configName)
v.SetConfigType(tc.configType)
err := v.ReadConfig(bytes.NewBuffer(tc.input))
if err != nil {
t.Fatal(err)
}
if err := v.WriteConfigAs(tc.fileName); err != nil {
t.Fatal(err)
}
// The TOML String method does not order the contents.
// Therefore, we must read the generated file and compare the data.
v2 := New()
v2.SetFs(fs)
v2.SetConfigName(tc.configName)
v2.SetConfigType(tc.configType)
v2.SetConfigFile(tc.fileName)
err = v2.ReadInConfig()
if err != nil {
t.Fatal(err)
}
assert.Equal(t, v.GetString("title_dotenv"), v2.GetString("title_dotenv"))
assert.Equal(t, v.GetString("type_dotenv"), v2.GetString("type_dotenv"))
assert.Equal(t, v.GetString("kind_dotenv"), v2.GetString("kind_dotenv"))
})
}
}
func TestSafeWriteConfig(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
v.AddConfigPath("/test")
v.SetConfigName("c")
v.SetConfigType("yaml")
require.NoError(t, v.ReadConfig(bytes.NewBuffer(yamlExample)))
require.NoError(t, v.SafeWriteConfig())
read, err := afero.ReadFile(fs, testutil.AbsFilePath(t, "/test/c.yaml"))
require.NoError(t, err)
assert.Equal(t, yamlWriteExpected, read)
}
func TestSafeWriteConfigWithMissingConfigPath(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
v.SetConfigName("c")
v.SetConfigType("yaml")
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require.EqualError(t, v.SafeWriteConfig(), "missing configuration for 'configPath'")
}
func TestSafeWriteConfigWithExistingFile(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
fs.Create(testutil.AbsFilePath(t, "/test/c.yaml"))
v.SetFs(fs)
v.AddConfigPath("/test")
v.SetConfigName("c")
v.SetConfigType("yaml")
err := v.SafeWriteConfig()
require.Error(t, err)
_, ok := err.(ConfigFileAlreadyExistsError)
assert.True(t, ok, "Expected ConfigFileAlreadyExistsError")
}
func TestSafeWriteAsConfig(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
v.SetFs(fs)
err := v.ReadConfig(bytes.NewBuffer(yamlExample))
if err != nil {
t.Fatal(err)
}
require.NoError(t, v.SafeWriteConfigAs("/test/c.yaml"))
if _, err = afero.ReadFile(fs, "/test/c.yaml"); err != nil {
t.Fatal(err)
}
}
func TestSafeWriteConfigAsWithExistingFile(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
fs.Create("/test/c.yaml")
v.SetFs(fs)
err := v.SafeWriteConfigAs("/test/c.yaml")
require.Error(t, err)
_, ok := err.(ConfigFileAlreadyExistsError)
assert.True(t, ok, "Expected ConfigFileAlreadyExistsError")
}
func TestWriteHiddenFile(t *testing.T) {
v := New()
fs := afero.NewMemMapFs()
fs.Create(testutil.AbsFilePath(t, "/test/.config"))
v.SetFs(fs)
v.SetConfigName(".config")
v.SetConfigType("yaml")
v.AddConfigPath("/test")
err := v.ReadInConfig()
require.NoError(t, err)
err = v.WriteConfig()
require.NoError(t, err)
}
var yamlMergeExampleTgt = []byte(`
hello:
pop: 37890
largenum: 765432101234567
num2pow63: 9223372036854775808
universe: null
world:
- us
- uk
- fr
- de
`)
var yamlMergeExampleSrc = []byte(`
hello:
pop: 45000
largenum: 7654321001234567
universe:
- mw
- ad
2019-06-19 14:05:58 +00:00
ints:
- 1
- 2
fu: bar
`)
var jsonMergeExampleTgt = []byte(`
{
"hello": {
"foo": null,
"pop": 123456
}
}
`)
var jsonMergeExampleSrc = []byte(`
{
"hello": {
"foo": "foo str",
"pop": "pop str"
}
}
`)
func TestMergeConfig(t *testing.T) {
v := New()
v.SetConfigType("yml")
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleTgt)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 37890 {
t.Fatalf("pop != 37890, = %d", pop)
}
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if pop := v.GetInt32("hello.pop"); pop != int32(37890) {
t.Fatalf("pop != 37890, = %d", pop)
}
if pop := v.GetInt64("hello.largenum"); pop != int64(765432101234567) {
t.Fatalf("int64 largenum != 765432101234567, = %d", pop)
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}
if pop := v.GetUint("hello.pop"); pop != 37890 {
t.Fatalf("uint pop != 37890, = %d", pop)
}
if pop := v.GetUint16("hello.pop"); pop != uint16(37890) {
t.Fatalf("uint pop != 37890, = %d", pop)
}
if pop := v.GetUint32("hello.pop"); pop != 37890 {
t.Fatalf("uint32 pop != 37890, = %d", pop)
}
if pop := v.GetUint64("hello.num2pow63"); pop != 9223372036854775808 {
t.Fatalf("uint64 num2pow63 != 9223372036854775808, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 4 {
t.Fatalf("len(world) != 4, = %d", len(world))
}
if fu := v.GetString("fu"); fu != "" {
t.Fatalf("fu != \"\", = %s", fu)
}
if err := v.MergeConfig(bytes.NewBuffer(yamlMergeExampleSrc)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 45000 {
t.Fatalf("pop != 45000, = %d", pop)
}
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if pop := v.GetInt32("hello.pop"); pop != int32(45000) {
t.Fatalf("pop != 45000, = %d", pop)
}
if pop := v.GetInt64("hello.largenum"); pop != int64(7654321001234567) {
t.Fatalf("int64 largenum != 7654321001234567, = %d", pop)
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}
if world := v.GetStringSlice("hello.world"); len(world) != 4 {
t.Fatalf("len(world) != 4, = %d", len(world))
}
if universe := v.GetStringSlice("hello.universe"); len(universe) != 2 {
t.Fatalf("len(universe) != 2, = %d", len(universe))
}
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if ints := v.GetIntSlice("hello.ints"); len(ints) != 2 {
t.Fatalf("len(ints) != 2, = %d", len(ints))
}
if fu := v.GetString("fu"); fu != "bar" {
t.Fatalf("fu != \"bar\", = %s", fu)
}
}
func TestMergeConfigOverrideType(t *testing.T) {
v := New()
v.SetConfigType("json")
if err := v.ReadConfig(bytes.NewBuffer(jsonMergeExampleTgt)); err != nil {
t.Fatal(err)
}
if err := v.MergeConfig(bytes.NewBuffer(jsonMergeExampleSrc)); err != nil {
t.Fatal(err)
}
if pop := v.GetString("hello.pop"); pop != "pop str" {
t.Fatalf("pop != \"pop str\", = %s", pop)
}
if foo := v.GetString("hello.foo"); foo != "foo str" {
t.Fatalf("foo != \"foo str\", = %s", foo)
}
}
func TestMergeConfigNoMerge(t *testing.T) {
v := New()
v.SetConfigType("yml")
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleTgt)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 37890 {
t.Fatalf("pop != 37890, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 4 {
t.Fatalf("len(world) != 4, = %d", len(world))
}
if fu := v.GetString("fu"); fu != "" {
t.Fatalf("fu != \"\", = %s", fu)
}
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleSrc)); err != nil {
t.Fatal(err)
}
if pop := v.GetInt("hello.pop"); pop != 45000 {
t.Fatalf("pop != 45000, = %d", pop)
}
if world := v.GetStringSlice("hello.world"); len(world) != 0 {
t.Fatalf("len(world) != 0, = %d", len(world))
}
if universe := v.GetStringSlice("hello.universe"); len(universe) != 2 {
t.Fatalf("len(universe) != 2, = %d", len(universe))
}
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if ints := v.GetIntSlice("hello.ints"); len(ints) != 2 {
t.Fatalf("len(ints) != 2, = %d", len(ints))
}
if fu := v.GetString("fu"); fu != "bar" {
t.Fatalf("fu != \"bar\", = %s", fu)
}
}
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func TestMergeConfigMap(t *testing.T) {
v := New()
v.SetConfigType("yml")
if err := v.ReadConfig(bytes.NewBuffer(yamlMergeExampleTgt)); err != nil {
t.Fatal(err)
}
assert := func(i int) {
large := v.GetInt64("hello.largenum")
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pop := v.GetInt("hello.pop")
if large != 765432101234567 {
t.Fatal("Got large num:", large)
}
if pop != i {
t.Fatal("Got pop:", pop)
}
}
assert(37890)
update := map[string]interface{}{
"Hello": map[string]interface{}{
"Pop": 1234,
},
"World": map[interface{}]interface{}{
"Rock": 345,
2018-12-05 14:19:25 +00:00
},
}
if err := v.MergeConfigMap(update); err != nil {
t.Fatal(err)
}
if rock := v.GetInt("world.rock"); rock != 345 {
t.Fatal("Got rock:", rock)
}
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assert(1234)
}
func TestUnmarshalingWithAliases(t *testing.T) {
v := New()
v.SetDefault("ID", 1)
v.Set("name", "Steve")
v.Set("lastname", "Owen")
v.RegisterAlias("UserID", "ID")
v.RegisterAlias("Firstname", "name")
v.RegisterAlias("Surname", "lastname")
type config struct {
ID int
FirstName string
Surname string
}
var C config
err := v.Unmarshal(&C)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, &config{ID: 1, FirstName: "Steve", Surname: "Owen"}, &C)
}
func TestSetConfigNameClearsFileCache(t *testing.T) {
SetConfigFile("/tmp/config.yaml")
SetConfigName("default")
f, err := v.getConfigFile()
if err == nil {
t.Fatalf("config file cache should have been cleared")
}
assert.Empty(t, f)
}
func TestShadowedNestedValue(t *testing.T) {
config := `name: steve
clothing:
jacket: leather
trousers: denim
pants:
size: large
`
initConfig("yaml", config)
assert.Equal(t, "steve", GetString("name"))
polyester := "polyester"
SetDefault("clothing.shirt", polyester)
SetDefault("clothing.jacket.price", 100)
assert.Equal(t, "leather", GetString("clothing.jacket"))
assert.Nil(t, Get("clothing.jacket.price"))
assert.Equal(t, polyester, GetString("clothing.shirt"))
clothingSettings := AllSettings()["clothing"].(map[string]interface{})
assert.Equal(t, "leather", clothingSettings["jacket"])
assert.Equal(t, polyester, clothingSettings["shirt"])
}
func TestDotParameter(t *testing.T) {
initJSON()
// shoud take precedence over batters defined in jsonExample
r := bytes.NewReader([]byte(`{ "batters.batter": [ { "type": "Small" } ] }`))
unmarshalReader(r, v.config)
actual := Get("batters.batter")
expected := []interface{}{map[string]interface{}{"type": "Small"}}
assert.Equal(t, expected, actual)
}
func TestCaseInsensitive(t *testing.T) {
for _, config := range []struct {
typ string
content string
}{
{"yaml", `
aBcD: 1
eF:
gH: 2
iJk: 3
Lm:
nO: 4
P:
Q: 5
R: 6
`},
{"json", `{
"aBcD": 1,
"eF": {
"iJk": 3,
"Lm": {
"P": {
"Q": 5,
"R": 6
},
"nO": 4
},
"gH": 2
}
}`},
{"toml", `aBcD = 1
[eF]
gH = 2
iJk = 3
[eF.Lm]
nO = 4
[eF.Lm.P]
Q = 5
R = 6
`},
} {
doTestCaseInsensitive(t, config.typ, config.content)
}
}
func TestCaseInsensitiveSet(t *testing.T) {
Reset()
m1 := map[string]interface{}{
"Foo": 32,
"Bar": map[interface{}]interface{}{
"ABc": "A",
"cDE": "B",
},
}
m2 := map[string]interface{}{
"Foo": 52,
"Bar": map[interface{}]interface{}{
"bCd": "A",
"eFG": "B",
},
}
Set("Given1", m1)
Set("Number1", 42)
SetDefault("Given2", m2)
SetDefault("Number2", 52)
// Verify SetDefault
if v := Get("number2"); v != 52 {
t.Fatalf("Expected 52 got %q", v)
}
if v := Get("given2.foo"); v != 52 {
t.Fatalf("Expected 52 got %q", v)
}
if v := Get("given2.bar.bcd"); v != "A" {
t.Fatalf("Expected A got %q", v)
}
if _, ok := m2["Foo"]; !ok {
t.Fatal("Input map changed")
}
// Verify Set
if v := Get("number1"); v != 42 {
t.Fatalf("Expected 42 got %q", v)
}
if v := Get("given1.foo"); v != 32 {
t.Fatalf("Expected 32 got %q", v)
}
if v := Get("given1.bar.abc"); v != "A" {
t.Fatalf("Expected A got %q", v)
}
if _, ok := m1["Foo"]; !ok {
t.Fatal("Input map changed")
}
}
func TestParseNested(t *testing.T) {
type duration struct {
Delay time.Duration
}
type item struct {
Name string
Delay time.Duration
Nested duration
}
config := `[[parent]]
delay="100ms"
[parent.nested]
delay="200ms"
`
initConfig("toml", config)
var items []item
err := v.UnmarshalKey("parent", &items)
if err != nil {
t.Fatalf("unable to decode into struct, %v", err)
}
assert.Equal(t, 1, len(items))
assert.Equal(t, 100*time.Millisecond, items[0].Delay)
assert.Equal(t, 200*time.Millisecond, items[0].Nested.Delay)
}
func doTestCaseInsensitive(t *testing.T, typ, config string) {
initConfig(typ, config)
Set("RfD", true)
assert.Equal(t, true, Get("rfd"))
assert.Equal(t, true, Get("rFD"))
assert.Equal(t, 1, cast.ToInt(Get("abcd")))
assert.Equal(t, 1, cast.ToInt(Get("Abcd")))
assert.Equal(t, 2, cast.ToInt(Get("ef.gh")))
assert.Equal(t, 3, cast.ToInt(Get("ef.ijk")))
assert.Equal(t, 4, cast.ToInt(Get("ef.lm.no")))
assert.Equal(t, 5, cast.ToInt(Get("ef.lm.p.q")))
}
func newViperWithConfigFile(t *testing.T) (*Viper, string, func()) {
watchDir, err := ioutil.TempDir("", "")
require.Nil(t, err)
configFile := path.Join(watchDir, "config.yaml")
err = ioutil.WriteFile(configFile, []byte("foo: bar\n"), 0o640)
require.Nil(t, err)
cleanup := func() {
os.RemoveAll(watchDir)
}
v := New()
v.SetConfigFile(configFile)
err = v.ReadInConfig()
require.Nil(t, err)
require.Equal(t, "bar", v.Get("foo"))
return v, configFile, cleanup
}
func newViperWithSymlinkedConfigFile(t *testing.T) (*Viper, string, string, func()) {
watchDir, err := ioutil.TempDir("", "")
require.Nil(t, err)
dataDir1 := path.Join(watchDir, "data1")
err = os.Mkdir(dataDir1, 0o777)
require.Nil(t, err)
realConfigFile := path.Join(dataDir1, "config.yaml")
t.Logf("Real config file location: %s\n", realConfigFile)
err = ioutil.WriteFile(realConfigFile, []byte("foo: bar\n"), 0o640)
require.Nil(t, err)
cleanup := func() {
os.RemoveAll(watchDir)
}
// now, symlink the tm `data1` dir to `data` in the baseDir
os.Symlink(dataDir1, path.Join(watchDir, "data"))
// and link the `<watchdir>/datadir1/config.yaml` to `<watchdir>/config.yaml`
configFile := path.Join(watchDir, "config.yaml")
os.Symlink(path.Join(watchDir, "data", "config.yaml"), configFile)
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t.Logf("Config file location: %s\n", path.Join(watchDir, "config.yaml"))
// init Viper
v := New()
v.SetConfigFile(configFile)
err = v.ReadInConfig()
require.Nil(t, err)
require.Equal(t, "bar", v.Get("foo"))
return v, watchDir, configFile, cleanup
}
func TestWatchFile(t *testing.T) {
if runtime.GOOS == "linux" {
// TODO(bep) FIX ME
t.Skip("Skip test on Linux ...")
}
t.Run("file content changed", func(t *testing.T) {
// given a `config.yaml` file being watched
v, configFile, cleanup := newViperWithConfigFile(t)
defer cleanup()
_, err := os.Stat(configFile)
require.NoError(t, err)
t.Logf("test config file: %s\n", configFile)
wg := sync.WaitGroup{}
wg.Add(1)
var wgDoneOnce sync.Once // OnConfigChange is called twice on Windows
v.OnConfigChange(func(in fsnotify.Event) {
t.Logf("config file changed")
wgDoneOnce.Do(func() {
wg.Done()
})
})
v.WatchConfig()
// when overwriting the file and waiting for the custom change notification handler to be triggered
err = ioutil.WriteFile(configFile, []byte("foo: baz\n"), 0o640)
wg.Wait()
// then the config value should have changed
require.Nil(t, err)
assert.Equal(t, "baz", v.Get("foo"))
})
t.Run("link to real file changed (à la Kubernetes)", func(t *testing.T) {
// skip if not executed on Linux
if runtime.GOOS != "linux" {
t.Skipf("Skipping test as symlink replacements don't work on non-linux environment...")
}
v, watchDir, _, _ := newViperWithSymlinkedConfigFile(t)
// defer cleanup()
wg := sync.WaitGroup{}
v.WatchConfig()
v.OnConfigChange(func(in fsnotify.Event) {
t.Logf("config file changed")
wg.Done()
})
wg.Add(1)
// when link to another `config.yaml` file
dataDir2 := path.Join(watchDir, "data2")
err := os.Mkdir(dataDir2, 0o777)
require.Nil(t, err)
configFile2 := path.Join(dataDir2, "config.yaml")
err = ioutil.WriteFile(configFile2, []byte("foo: baz\n"), 0o640)
require.Nil(t, err)
// change the symlink using the `ln -sfn` command
err = exec.Command("ln", "-sfn", dataDir2, path.Join(watchDir, "data")).Run()
require.Nil(t, err)
wg.Wait()
// then
require.Nil(t, err)
assert.Equal(t, "baz", v.Get("foo"))
})
}
func TestUnmarshal_DotSeparatorBackwardCompatibility(t *testing.T) {
flags := pflag.NewFlagSet("test", pflag.ContinueOnError)
flags.String("foo.bar", "cobra_flag", "")
v := New()
assert.NoError(t, v.BindPFlags(flags))
config := &struct {
Foo struct {
Bar string
}
}{}
assert.NoError(t, v.Unmarshal(config))
assert.Equal(t, "cobra_flag", config.Foo.Bar)
}
// var yamlExampleWithDot = []byte(`Hacker: true
// name: steve
// hobbies:
// - skateboarding
// - snowboarding
// - go
// clothing:
// jacket: leather
// trousers: denim
// pants:
// size: large
// age: 35
// eyes : brown
// beard: true
// emails:
// steve@hacker.com:
// created: 01/02/03
// active: true
// `)
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func TestKeyDelimiter(t *testing.T) {
v := NewWithOptions(KeyDelimiter("::"))
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v.SetConfigType("yaml")
r := strings.NewReader(string(yamlExampleWithDot))
err := v.unmarshalReader(r, v.config)
require.NoError(t, err)
values := map[string]interface{}{
"image": map[string]interface{}{
"repository": "someImage",
"tag": "1.0.0",
},
"ingress": map[string]interface{}{
"annotations": map[string]interface{}{
"traefik.frontend.rule.type": "PathPrefix",
"traefik.ingress.kubernetes.io/ssl-redirect": "true",
},
},
}
v.SetDefault("charts::values", values)
assert.Equal(t, "leather", v.GetString("clothing::jacket"))
assert.Equal(t, "01/02/03", v.GetString("emails::steve@hacker.com::created"))
type config struct {
Charts struct {
Values map[string]interface{}
}
}
expected := config{
Charts: struct {
Values map[string]interface{}
}{
Values: values,
},
}
var actual config
assert.NoError(t, v.Unmarshal(&actual))
assert.Equal(t, expected, actual)
}
var yamlDeepNestedSlices = []byte(`TV:
- title: "The Expanse"
title_i18n:
USA: "The Expanse"
Japan: "エクスパンス -巨獣めざめる-"
seasons:
- first_released: "December 14, 2015"
episodes:
- title: "Dulcinea"
air_date: "December 14, 2015"
- title: "The Big Empty"
air_date: "December 15, 2015"
- title: "Remember the Cant"
air_date: "December 22, 2015"
- first_released: "February 1, 2017"
episodes:
- title: "Safe"
air_date: "February 1, 2017"
- title: "Doors & Corners"
air_date: "February 1, 2017"
- title: "Static"
air_date: "February 8, 2017"
episodes:
- ["Dulcinea", "The Big Empty", "Remember the Cant"]
- ["Safe", "Doors & Corners", "Static"]
`)
func TestSliceIndexAccess(t *testing.T) {
v.SetConfigType("yaml")
r := strings.NewReader(string(yamlDeepNestedSlices))
err := v.unmarshalReader(r, v.config)
require.NoError(t, err)
assert.Equal(t, "The Expanse", v.GetString("tv.0.title"))
assert.Equal(t, "February 1, 2017", v.GetString("tv.0.seasons.1.first_released"))
assert.Equal(t, "Static", v.GetString("tv.0.seasons.1.episodes.2.title"))
assert.Equal(t, "December 15, 2015", v.GetString("tv.0.seasons.0.episodes.1.air_date"))
// Test nested keys with capital letters
assert.Equal(t, "The Expanse", v.GetString("tv.0.title_i18n.USA"))
assert.Equal(t, "エクスパンス -巨獣めざめる-", v.GetString("tv.0.title_i18n.Japan"))
// Test for index out of bounds
assert.Equal(t, "", v.GetString("tv.0.seasons.2.first_released"))
// Accessing multidimensional arrays
assert.Equal(t, "Static", v.GetString("tv.0.episodes.1.2"))
}
func BenchmarkGetBool(b *testing.B) {
key := "BenchmarkGetBool"
v = New()
v.Set(key, true)
for i := 0; i < b.N; i++ {
if !v.GetBool(key) {
b.Fatal("GetBool returned false")
}
}
}
2016-10-10 09:47:23 +00:00
func BenchmarkGet(b *testing.B) {
key := "BenchmarkGet"
v = New()
v.Set(key, true)
for i := 0; i < b.N; i++ {
if !v.Get(key).(bool) {
b.Fatal("Get returned false")
}
}
}
// BenchmarkGetBoolFromMap is the "perfect result" for the above.
func BenchmarkGetBoolFromMap(b *testing.B) {
m := make(map[string]bool)
key := "BenchmarkGetBool"
m[key] = true
for i := 0; i < b.N; i++ {
if !m[key] {
b.Fatal("Map value was false")
}
}
}
// Skip some tests on Windows that kept failing when Windows was added to the CI as a target.
func skipWindows(t *testing.T) {
if runtime.GOOS == "windows" {
t.Skip("Skip test on Windows")
}
}