OZG-3563 fix tests and new mocking function

alfa-client/libs/test-utils/src/lib/mocking.spec.ts

+import { Mock, mock } from '@alfa-client/test-utils';
+
+describe('mock', () => {
+  class TestService {
+    methodTestService() {}
+  }
+
+  class ExtendedService extends TestService {
+    prop: string = 'test';
+    methodExtendedService() {}
+  }
+
+  const mockedService: Mock<ExtendedService> = mock(ExtendedService);
+
+  it('should mock methods of a class', () => {
+    expect(mockedService.methodTestService).toBeDefined();
+  });
+
+  it('should mock methods of inherited class', () => {
+    expect(mockedService.methodExtendedService).toBeDefined();
+  });
+
+  it('should not mock non-function properties', () => {
+    expect(mockedService.prop).toBeUndefined();
+  });
+});

alfa-client/libs/test-utils/src/lib/mocking.ts

@@ -47,16 +47,6 @@ export function mock<T>(service: Type<T>): Mock<T> {
   return mockValue;
 }
 
-export function mock2<T>(service: Type<T>): Mock<T> {
-  return <Mock<T>>Object.getOwnPropertyNames(service.prototype).reduce(
-    (mockValue, key) => ({
-      ...mockValue,
-      [key]: jest.fn(),
-    }),
-    <any>{},
-  );
-}
-
 function isFunctionDescriptor(prototype: object) {
   return (key: string) => {
     const descriptor: PropertyDescriptor = Object.getOwnPropertyDescriptor(prototype, key);