diff --git a/registry.go b/registry.go
index 6abbf0e..24b6a3c 100644
--- a/registry.go
+++ b/registry.go
@@ -156,10 +156,3 @@ LOOP:
 	}
 	return fields
 }
-
-var InjectableAnnotationType = reflect.TypeOf((*InjectableAnnotation)(nil))
-
-type InjectableAnnotation struct {
-	Annotation `@name:"@Component"`
-	Name       string `json:"name" @default:"test"`
-}
diff --git a/registry_test.go b/registry_test.go
index 78efd0b..7394885 100644
--- a/registry_test.go
+++ b/registry_test.go
@@ -5,6 +5,78 @@ import (
 	"testing"
 )
 
+var InjectableAnnotationType = reflect.TypeOf((*InjectableAnnotation)(nil))
+
+type InjectableAnnotation struct {
+	Annotation `@name:"@Injectable"`
+	Name       string `json:"name" @default:""`
+}
+
+var TestServiceType = reflect.TypeOf((*TestService)(nil))
+
+type TestService struct {
+	TypeAnnotation `annotation:"@Injectable('name': 'TestService')"`
+}
+
+func TestNew(t *testing.T) {
+	type args struct {
+		parent Registry
+	}
+	tests := []struct {
+		name string
+		args args
+		want Registry
+	}{
+		{
+			name: "New of nil",
+			args: args{
+				parent: nil,
+			},
+			want: New(nil),
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := New(tt.args.parent); !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("New() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
+func TestRegister(t *testing.T) {
+	type args struct {
+		t reflect.Type
+	}
+	tests := []struct {
+		name    string
+		args    args
+		wantErr bool
+	}{
+		{
+			name: "Register Injectable",
+			args: args{
+				t: InjectableAnnotationType,
+			},
+			wantErr: false,
+		},
+		{
+			name: "Register duplicate Injectable",
+			args: args{
+				t: InjectableAnnotationType,
+			},
+			wantErr: true,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if err := Register(tt.args.t); (err != nil) != tt.wantErr {
+				t.Errorf("Register() error = %v, wantErr %v", err, tt.wantErr)
+			}
+		})
+	}
+}
+
 func TestAnnotationRegistry_Register(t *testing.T) {
 	type fields struct {
 		parent      Registry
@@ -34,6 +106,50 @@ func TestAnnotationRegistry_Register(t *testing.T) {
 	}
 }
 
+func TestGet(t *testing.T) {
+	Register(InjectableAnnotationType)
+
+	ts := TestService{}
+	tsT := reflect.TypeOf(ts)
+
+	f, _ := tsT.FieldByName("TypeAnnotation")
+
+	type args struct {
+		f *reflect.StructField
+	}
+	tests := []struct {
+		name    string
+		args    args
+		want    map[reflect.Type]Annotation
+		wantErr bool
+	}{
+		{
+			name: "Get TestService",
+			args: args{
+				f: &f,
+			},
+			want: map[reflect.Type]Annotation{
+				TestServiceType: &InjectableAnnotation{
+					Name: "TestService",
+				},
+			},
+			wantErr: false,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			got, err := Get(tt.args.f)
+			if (err != nil) != tt.wantErr {
+				t.Errorf("Get() error = %v, wantErr %v", err, tt.wantErr)
+				return
+			}
+			if !reflect.DeepEqual(got, tt.want) {
+				t.Errorf("Get() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}
+
 func TestAnnotationRegistry_Get(t *testing.T) {
 	type fields struct {
 		parent      Registry