test(transactional): add tests for proxying metadata and properties t…

…hrough decorator

packages/transactional/test/mock-decorators.ts

@@ -0,0 +1,21 @@
+export function MetadataDefiningDecorator(): MethodDecorator {
+    return (
+        _target: any,
+        _propertyKey: string | symbol,
+        descriptor: TypedPropertyDescriptor<any>,
+    ) => {
+        Reflect.defineMetadata('testproperty', 'testvalue', descriptor.value);
+        return descriptor;
+    };
+}
+
+export function PropertyDefiningDecorator(): MethodDecorator {
+    return (
+        _target: any,
+        _propertyKey: string | symbol,
+        descriptor: TypedPropertyDescriptor<any>,
+    ) => {
+        descriptor.value.testproperty = 'testvalue';
+        return descriptor;
+    };
+}

packages/transactional/test/transactional.spec.ts

@@ -6,6 +6,10 @@ import {
     MockDbConnection,
     TransactionAdapterMock,
 } from './transaction-adapter-mock';
+import {
+    MetadataDefiningDecorator,
+    PropertyDefiningDecorator,
+} from './mock-decorators';
 
 @Injectable()
 class CalledService {
@@ -30,6 +34,8 @@ class CallingService {
     ) {}
 
     @Transactional()
+    @MetadataDefiningDecorator()
+    @PropertyDefiningDecorator()
     async transactionWithDecorator() {
         const q1 = await this.calledService.doWork(1);
         const q2 = await this.calledService.doOtherWork(2);
@@ -210,4 +216,21 @@ describe('Transactional', () => {
             expect(queries).toEqual([['SELECT 5'], ['SELECT 6']]);
         });
     });
+
+    describe('should mantain method properties set by other decorators', () => {
+        it('should mantain metadata', () => {
+            expect(
+                Reflect.getMetadata(
+                    'testproperty',
+                    callingService.transactionWithDecorator,
+                ),
+            ).toEqual('testvalue');
+        });
+
+        it('should mantain property', () => {
+            expect(
+                callingService.transactionWithDecorator['testproperty'],
+            ).toEqual('testvalue');
+        });
+    });
 });