Spring 6.1 Пробный тест RestClient JUnit

Я решил свою проблему с помощью okhttp3.mockwebserver.MockWebServer.

@SpringBootTest
class ProductServiceClientTest {
 private MockWebServer mockWebServer;
 private ProductServiceClient productServiceClient;

  @BeforeEach
  void setUp() throws IOException {
    mockWebServer = new MockWebServer();
    mockWebServer.start();
    // Configure the RestClient to point to the MockWebServer URL
    RestClient restClient = RestClient.builder().baseUrl(mockWebServer.url("/").toString()).build();
    // Configure the ProductServiceClient to use the mocked vales
    productServiceClient = new ProductServiceClient(mockWebServer.url("/").toString(), restClient);
  }

  @AfterEach
  void tearDown() throws IOException {
    mockWebServer.shutdown();
  }

  @Test
  void testGetProductPrices() throws Exception {
    UUID productId = UUID.randomUUID();
    LocalDate date = LocalDate.now();

    var expectedResponse =
        List.of(
            new ProductPriceDto(date, 49L, 500), new ProductPriceDto(date.plusDays(1), 39L, 700));
    ObjectMapper mapper = new ObjectMapper();
    mapper.registerModule(new JavaTimeModule());
    String jsonResponse = mapper.writeValueAsString(expectedResponse);

    mockWebServer.enqueue(
        new MockResponse()
            .setBody(jsonResponse)
            .addHeader("Content-Type", MediaType.APPLICATION_JSON_VALUE));

    List<ProductPriceDto> actualResponse = productServiceClient.getProductPrices(productId, date);

    assertEquals(expectedResponse, actualResponse);
  }
}