package config_test import ( "context" "fmt" "testing" "go.unistack.org/micro/v3/config" ) type Cfg struct { StringValue string `default:"string_value"` IgnoreValue string `json:"-"` StructValue struct { StringValue string `default:"string_value"` } IntValue int `default:"99"` } func TestDefault(t *testing.T) { ctx := context.Background() conf := &Cfg{IntValue: 10} blfn := func(ctx context.Context, cfg config.Config) error { nconf, ok := cfg.Options().Struct.(*Cfg) if !ok { return fmt.Errorf("failed to get Struct from options: %v", cfg.Options()) } nconf.StringValue = "before_load" return nil } alfn := func(ctx context.Context, cfg config.Config) error { nconf, ok := cfg.Options().Struct.(*Cfg) if !ok { return fmt.Errorf("failed to get Struct from options: %v", cfg.Options()) } nconf.StringValue = "after_load" return nil } cfg := config.NewConfig(config.Struct(conf), config.BeforeLoad(blfn), config.AfterLoad(alfn)) if err := cfg.Init(); err != nil { t.Fatal(err) } if err := cfg.Load(ctx); err != nil { t.Fatal(err) } if conf.StringValue != "after_load" { t.Fatal("AfterLoad option not working") } _ = conf // t.Logf("%#+v\n", conf) }