[AFP-55] Modifiy GET controller test

src/test/java/com/nisum/ascend/inventory/controller/ProductControllerTest.java

@@ -13,10 +13,16 @@ import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWeb
 import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.boot.test.mock.mockito.MockBean;
 import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
 import org.springframework.test.annotation.DirtiesContext;
 import org.springframework.test.context.ActiveProfiles;
 import org.springframework.test.context.junit.jupiter.SpringExtension;
 import org.springframework.test.web.reactive.server.WebTestClient;
+import org.springframework.web.reactive.function.client.WebClient;
+
+import java.util.List;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
 
 @ExtendWith(SpringExtension.class)
 @SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
@@ -37,10 +43,11 @@ class ProductControllerTest {
     void testFindAllProducts(){
         webTestClient.get()
                 .uri("/api/products")
-                .header(HttpHeaders.ACCEPT, "application/json")
                 .exchange()
                 .expectStatus().isOk()
-                .expectBodyList(Product.class);
+                .expectHeader().contentType(MediaType.APPLICATION_JSON_VALUE)
+                .returnResult(Product.class)
+                .getResponseBody();
     }