micro/config/source/env/env_test.go

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package env
import (
"encoding/json"
"os"
"testing"
"time"
"github.com/micro/go-micro/v3/config/source"
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)
func TestEnv_Read(t *testing.T) {
expected := map[string]map[string]string{
"database": {
"host": "localhost",
"password": "password",
"datasource": "user:password@tcp(localhost:port)/db?charset=utf8mb4&parseTime=True&loc=Local",
},
}
os.Setenv("DATABASE_HOST", "localhost")
os.Setenv("DATABASE_PASSWORD", "password")
os.Setenv("DATABASE_DATASOURCE", "user:password@tcp(localhost:port)/db?charset=utf8mb4&parseTime=True&loc=Local")
source := NewSource()
c, err := source.Read()
if err != nil {
t.Error(err)
}
var actual map[string]interface{}
if err := json.Unmarshal(c.Data, &actual); err != nil {
t.Error(err)
}
actualDB := actual["database"].(map[string]interface{})
for k, v := range expected["database"] {
a := actualDB[k]
if a != v {
t.Errorf("expected %v got %v", v, a)
}
}
}
func TestEnvvar_Prefixes(t *testing.T) {
os.Setenv("APP_DATABASE_HOST", "localhost")
os.Setenv("APP_DATABASE_PASSWORD", "password")
os.Setenv("VAULT_ADDR", "vault:1337")
os.Setenv("MICRO_REGISTRY", "mdns")
var prefixtests = []struct {
prefixOpts []source.Option
expectedKeys []string
}{
{[]source.Option{WithPrefix("APP", "MICRO")}, []string{"app", "micro"}},
{[]source.Option{WithPrefix("MICRO"), WithStrippedPrefix("APP")}, []string{"database", "micro"}},
{[]source.Option{WithPrefix("MICRO"), WithStrippedPrefix("APP")}, []string{"database", "micro"}},
}
for _, pt := range prefixtests {
source := NewSource(pt.prefixOpts...)
c, err := source.Read()
if err != nil {
t.Error(err)
}
var actual map[string]interface{}
if err := json.Unmarshal(c.Data, &actual); err != nil {
t.Error(err)
}
// assert other prefixes ignored
if l := len(actual); l != len(pt.expectedKeys) {
t.Errorf("expected %v top keys, got %v", len(pt.expectedKeys), l)
}
for _, k := range pt.expectedKeys {
if !containsKey(actual, k) {
t.Errorf("expected key %v, not found", k)
}
}
}
}
func TestEnvvar_WatchNextNoOpsUntilStop(t *testing.T) {
src := NewSource(WithStrippedPrefix("GOMICRO_"))
w, err := src.Watch()
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if err != nil {
t.Error(err)
}
go func() {
time.Sleep(50 * time.Millisecond)
w.Stop()
}()
if _, err := w.Next(); err != source.ErrWatcherStopped {
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t.Errorf("expected watcher stopped error, got %v", err)
}
}
func containsKey(m map[string]interface{}, s string) bool {
for k := range m {
if k == s {
return true
}
}
return false
}