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gofig_test.go
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gofig_test.go
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package gofig
import (
"os"
"testing"
"github.com/darklam/gofig/mocks/interfaces"
"github.com/darklam/gofig/providers"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/mock"
)
func TestGofig_PopulateConfigNoProvider(t *testing.T) {
// GIVEN
gofig := NewGofig()
envProvider := providers.NewEnvProvider()
gofig.RegisterProvider(envProvider)
type child struct {
URL string `prop:"url"`
}
type parent struct {
C *child `prop:"smth"`
SuperSecretPassword string `prop:"super.secret.password" default:"1234"`
}
err := os.Setenv("SUPER_SECRET_PASSWORD", "4321")
if err != nil {
t.Error("got error when setting environment")
}
err = os.Setenv("SMTH_URL", "some_url")
if err != nil {
t.Error("got error when setting environment")
}
cfg := new(parent)
// WHEN
err = gofig.PopulateConfig(cfg)
// THEN
assert.Nil(t, err)
assert.Equal(t, "4321", cfg.SuperSecretPassword)
assert.Equal(t, "some_url", cfg.C.URL)
}
func TestGofig_PopulateConfigNoProviderVeryDeep(t *testing.T) {
// GIVEN
gofig := NewGofig()
envProvider := providers.NewEnvProvider()
gofig.RegisterProvider(envProvider)
type childChildChild struct {
EvenMoar string `prop:"even.moar"`
}
type childChild struct {
Moar string `prop:"moar"`
Em *childChildChild `prop:"em"`
}
type child struct {
URL string `prop:"url"`
M *childChild `prop:"m"`
}
type parent struct {
C *child `prop:"c"`
SuperSecretPassword string `prop:"super.secret.password" default:"1234"`
}
err := os.Setenv("SUPER_SECRET_PASSWORD", "4321")
if err != nil {
t.Error("got nil when setting environment")
}
err = os.Setenv("C_URL", "some_url")
if err != nil {
t.Error("got nil when setting environment")
}
err = os.Setenv("C_M_MOAR", "moar")
if err != nil {
t.Error("got nil when setting environment")
}
err = os.Setenv("C_M_EM_EVEN_MOAR", "even_moar")
if err != nil {
t.Error("got nil when setting environment")
}
cfg := new(parent)
// WHEN
err = gofig.PopulateConfig(cfg)
// THEN
assert.Nil(t, err)
assert.Equal(t, "4321", cfg.SuperSecretPassword)
assert.Equal(t, "some_url", cfg.C.URL)
assert.Equal(t, "moar", cfg.C.M.Moar)
assert.Equal(t, "even_moar", cfg.C.M.Em.EvenMoar)
}
func TestGofig_PopulateConfigWithProviderSimple(t *testing.T) {
// GIVEN
provider := interfaces.NewMockProvider(t)
provider.On("GetValue", []string{"smth"}).Return("providerValue", nil)
gofig := NewGofig()
gofig.RegisterProvider(provider)
err := os.Setenv("SOMETHING", "something")
if err != nil {
t.Error("got nil when setting environment")
}
type simple struct {
SomeField string `prop:"smth"`
}
cfg := new(simple)
// WHEN
err = gofig.PopulateConfig(cfg)
// THEN
provider.AssertNumberOfCalls(t, "GetValue", 1)
assert.Nil(t, err)
assert.Equal(t, "providerValue", cfg.SomeField)
}
func TestGofig_PopulateConfigProviderPrecedence(t *testing.T) {
// GIVEN
gofig := NewGofig()
provider1 := interfaces.NewMockProvider(t)
provider2 := interfaces.NewMockProvider(t)
provider3 := interfaces.NewMockProvider(t)
provider1.On("GetValue", mock.Anything).Return("provider1", nil)
provider2.On("GetValue", []string{"provider2"}).Return("provider2", nil)
provider2.On("GetValue", []string{"provider3"}).Return("provider2", nil)
provider2.On("GetValue", mock.Anything).Return("", nil)
provider3.On("GetValue", []string{"provider3"}).Return("provider3", nil)
provider3.On("GetValue", mock.Anything).Return("", nil)
gofig.RegisterProvider(provider1)
gofig.RegisterProvider(provider2)
gofig.RegisterProvider(provider3)
type config struct {
Value1 string `prop:"provider1"`
Value2 string `prop:"provider2"`
Value3 string `prop:"provider3"`
}
cfg := new(config)
// WHEN
err := gofig.PopulateConfig(cfg)
// THEN
assert.Nil(t, err)
assert.Equal(t, cfg.Value1, "provider1")
assert.Equal(t, cfg.Value2, "provider2")
assert.Equal(t, cfg.Value3, "provider3")
}