Spring Boot Microservice - ServiceTest and ControllerTest for Junit throwing java.lang.StackOverflow

[Kevin Rapter]

I have a problem in running any test method in service test and controller test in one of the spring boot microservices (order service).

After I completed service and controller , I tried to write their test methods but I have a problem in there.

How can I fix it?

Here is one of the test method of OrderServiceTest shown below

    @DisplayName("Get Order - Success Scenario")
    @Test
    void test_When_Order_Success() {
        
        //Mocking
        Order order = getMockOrder();
        when(orderRepository.findById(anyLong()))
                    .thenReturn(Optional.of(order));
        
        when(restTemplate.getForObject(
                    "http://PRODUCT-SERVICE/product/" + order.getProductId(),
                    ProductResponse.class
        )).thenReturn(getMockProductResponse());
        
        when(restTemplate.getForObject(
                    "http://PAYMENT-SERVICE/payment/order/" + order.getId(),
                    PaymentResponse.class
        )).thenReturn(getMockPaymentResponse());
        
        //Actual
        OrderResponse orderResponse = orderService.getOrderDetails(1);
        
        //Verification
        verify(orderRepository, times(1)).findById(anyLong());
        verify(restTemplate, times(1)).getForObject(
                    "http://PRODUCT-SERVICE/product/" + order.getProductId(),
                    ProductResponse.class);
        verify(restTemplate, times(1)).getForObject(
                    "http://PAYMENT-SERVICE/payment/order/" + order.getId(),
                    PaymentResponse.class);
        
        //Assert
        assertNotNull(orderResponse);
        assertEquals(order.getId(), orderResponse.getOrderId());
    }

Here is one of the test method of OrderControllerTest shown below.

    @Test
    @DisplayName("Place Order -- Success Scenario")
    @WithMockUser(username = "User", authorities = { "ROLE_USER" })
    void test_When_placeOrder_DoPayment_Success() throws Exception {

        OrderRequest orderRequest = getMockOrderRequest();
        String jwt = getJWTTokenForRoleUser();

        MvcResult mvcResult
                = mockMvc.perform(MockMvcRequestBuilders.post("/order/placeorder")
                        .contentType(MediaType.APPLICATION_JSON_VALUE)
                        .header("Authorization", "Bearer " + jwt)
                        .content(objectMapper.writeValueAsString(orderRequest)))
                .andExpect(MockMvcResultMatchers.status().isOk())
                .andReturn();

        String orderId = mvcResult.getResponse().getContentAsString();

        Optional<Order> order = orderRepository.findById(Long.valueOf(orderId));
        assertTrue(order.isPresent());

        Order o = order.get();
        assertEquals(Long.parseLong(orderId), o.getId());
        assertEquals("PLACED", o.getOrderStatus());
        assertEquals(orderRequest.getTotalAmount(), o.getAmount());
        assertEquals(orderRequest.getQuantity(), o.getQuantity());
    }

Here is the error when I run any method of service test and controller shown below.

    java.lang.StackOverflowError
    	at java.base/java.lang.Throwable.getOurStackTrace(Throwable.java:861)
    	at java.base/java.lang.Throwable.getStackTrace(Throwable.java:853)
    	at ch.qos.logback.classic.spi.ThrowableProxy.<init>(ThrowableProxy.java:79)
        ...
        ...

**To run the app,**

1 ) Run Service Registery (Eureka Server)

2 ) Run config server

3 ) Run zipkin and redis through these commands shown below on docker

      docker run -d -p 9411:9411 openzipkin/zipkin
      docker run -d --name redis -p 6379:6379 redis

4 ) Run api gateway

5 ) Run other services

Here is the repo : [Link][1]

Here is the **result of the service test** screenshot : [Link][2]

Here is the **result of the controller test** screenshot : [Link][3]

 [1]: https://github.com/Rapter1990/microservicecoursedailybuffer
 [2]: https://ibb.co/FwmdLLS
 [3]: https://ibb.co/MZwD22Q

[Himai Minh]

There seems like a circular dependency in your domain objects. Try to search for @JsonIgnore and see if that works for you:
https://www.appsdeveloperblog.com/jsonignore-annotation-in-java/

[Kevin Rapter]

I don't think it throws the error due to the @JsonIgnore annotation.
I found this link before bu it didn't help me fix the issue.
Here is the link : https://github.com/spring-projects/spring-framework/issues/29215
I hope you can help me.

[Kevin Rapter]

Himai Minh wrote:There seems like a circular dependency in your domain objects. Try to search for @JsonIgnore and see if that works for you:
https://www.appsdeveloperblog.com/jsonignore-annotation-in-java/

Here is the link which is related with my issue : https://github.com/spring-projects/spring-framework/issues/29215

I still couldn't fix the issue.

I hope you can help me.

[Kevin Rapter]

Kevin Rapter wrote:

Himai Minh wrote:There seems like a circular dependency in your domain objects. Try to search for @JsonIgnore and see if that works for you:
https://www.appsdeveloperblog.com/jsonignore-annotation-in-java/

Here is the link which is related with my issue : https://github.com/spring-projects/spring-framework/issues/29215

I still couldn't fix the issue.

I hope you can help me.

Can you help me if you have any idea about it?