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Sub inerits from automaticEnvApplied and envKeyReplacer #1

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merged 1 commit into from
Mar 24, 2021
Merged

Sub inerits from automaticEnvApplied and envKeyReplacer #1

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8 changes: 7 additions & 1 deletion viper.go
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Original file line number Diff line number Diff line change
Expand Up @@ -201,6 +201,7 @@ type Viper struct {
envKeyReplacer StringReplacer
allowEmptyEnv bool

parents []string
config map[string]interface{}
override map[string]interface{}
defaults map[string]interface{}
Expand All @@ -225,6 +226,7 @@ func New() *Viper {
v.configPermissions = os.FileMode(0644)
v.fs = afero.NewOsFs()
v.config = make(map[string]interface{})
v.parents = []string{}
v.override = make(map[string]interface{})
v.defaults = make(map[string]interface{})
v.kvstore = make(map[string]interface{})
Expand Down Expand Up @@ -847,6 +849,9 @@ func (v *Viper) Sub(key string) *Viper {
}

if reflect.TypeOf(data).Kind() == reflect.Map {
subv.parents = append(v.parents, strings.ToLower(key))
subv.automaticEnvApplied = v.automaticEnvApplied
subv.envKeyReplacer = v.envKeyReplacer
subv.config = cast.ToStringMap(data)
return subv
}
Expand Down Expand Up @@ -1170,9 +1175,10 @@ func (v *Viper) find(lcaseKey string, flagDefault bool) interface{} {

// Env override next
if v.automaticEnvApplied {
envKey := strings.Join(append(v.parents, lcaseKey), ".")
// even if it hasn't been registered, if automaticEnv is used,
// check any Get request
if val, ok := v.getEnv(v.mergeWithEnvPrefix(lcaseKey)); ok {
if val, ok := v.getEnv(v.mergeWithEnvPrefix(envKey)); ok {
return val
}
if nested && v.isPathShadowedInAutoEnv(path) != "" {
Expand Down
21 changes: 21 additions & 0 deletions viper_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -604,6 +604,19 @@ func TestEnvKeyReplacer(t *testing.T) {
assert.Equal(t, "30s", v.Get("refresh-interval"))
}

func TestEnvSubConfig(t *testing.T) {
initYAML()

v.AutomaticEnv()

replacer := strings.NewReplacer(".", "_")
v.SetEnvKeyReplacer(replacer)

testutil.Setenv(t, "CLOTHING_PANTS_SIZE", "small")
subv := v.Sub("clothing").Sub("pants")
assert.Equal(t, "small", subv.Get("size"))
}

func TestAllKeys(t *testing.T) {
initConfigs()

Expand Down Expand Up @@ -1321,6 +1334,14 @@ func TestSub(t *testing.T) {

subv = v.Sub("missing.key")
assert.Equal(t, (*Viper)(nil), subv)

subv = v.Sub("clothing")
assert.Equal(t, subv.parents[0], "clothing")

subv = v.Sub("clothing").Sub("pants")
assert.Equal(t, len(subv.parents), 2)
assert.Equal(t, subv.parents[0], "clothing")
assert.Equal(t, subv.parents[1], "pants")
}

var hclWriteExpected = []byte(`"foos" = {
Expand Down