Feat: Add unit test for order-service

Author: muhammad-keyvalue

src/test/java/com/sample/ecommerce/order/OrderApplicationTests.java

@@ -0,0 +1,166 @@
+package com.sample.ecommerce.order;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertThrows;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
+
+import java.util.Optional;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.context.ActiveProfiles;
+
+import com.sample.ecommerce.order.constants.OrderStatus;
+import com.sample.ecommerce.order.dto.OrderDto;
+import com.sample.ecommerce.order.dto.OrderItemDto;
+import com.sample.ecommerce.order.exception.ObjectNotFoundException;
+import com.sample.ecommerce.order.model.Category;
+import com.sample.ecommerce.order.model.Customer;
+import com.sample.ecommerce.order.model.Orders;
+import com.sample.ecommerce.order.model.OrderItem;
+import com.sample.ecommerce.order.model.Product;
+import com.sample.ecommerce.order.repository.CustomerRepository;
+import com.sample.ecommerce.order.repository.OrderRepository;
+import com.sample.ecommerce.order.repository.ProductRepository;
+import com.sample.ecommerce.order.service.OrderService;
+
+@SpringBootTest
+@ActiveProfiles("test")
+public class OrderServiceTests {
+
+  @MockBean
+  private OrderRepository orderRepository;
+
+  @MockBean
+  private ProductRepository productRepository;
+
+  @MockBean
+  private CustomerRepository customerRepository;
+
+  @Autowired
+  OrderService orderService;
+
+  @Test
+  @DisplayName("Should be able to get order by id")
+  void getOrderByIdTest() {
+    int randomId = 2;
+    final int totalPrice = 20;
+    final int quantity = 4;
+    Orders order = Orders.builder()
+        .id(randomId)
+        .totalQuantity(quantity)
+        .totalPrice(totalPrice)
+        .build();
+
+    Mockito.when(orderRepository.findById(anyInt())).thenReturn(Optional.of(order));
+    Orders obtainedOrder = orderService.findOne(1);
+    assertEquals(obtainedOrder, order);
+  }
+
+  @Test
+  @DisplayName("Should be able to create an order")
+  void createdOrderTest(){
+    final int randomId = 5;
+    final int customerId =1;
+    final int productId = 2;
+    final int totalPrice = 20;
+    final int totalQuantity = 4;
+
+    Mockito.when(customerRepository.findById(customerId))
+    .thenReturn(Optional.of(getSampleCustomer(customerId)));
+    Mockito.when(productRepository.findById(productId))
+    .thenReturn(Optional.of(getSampleProduct(productId)));
+
+    Orders order = Orders.builder()
+    .id(randomId)
+    .customer(getSampleCustomer(customerId))
+    .status(OrderStatus.INITIATED)
+    .totalQuantity(totalQuantity)
+    .totalPrice(totalPrice)
+    .build();
+
+    List<OrderItem> orderItems = getSampleOrderItems(order,productId,totalQuantity);
+    order.setOrderItems(orderItems);
+
+    OrderDto orderDto = OrderDto.builder()
+                        .customerId(customerId)
+                        .status(OrderStatus.INITIATED)
+                        .orderItems(getSampleOrderItemsDto(productId,totalQuantity))
+                        .build();
+
+    Mockito.when(orderRepository.save(any())).thenReturn(order);
+    Orders obtainedOrder = orderService.create(orderDto);
+    assertEquals(obtainedOrder, order);
+}
+
+@Test
+  @DisplayName("Should fail on creating order with invalid product")
+  void failOrderOnInvalidProductTest(){
+
+    Mockito.when(customerRepository.findById(anyInt()))
+    .thenReturn(Optional.of(getSampleCustomer(1)));
+    Mockito.when(productRepository.findById(anyInt()))
+    .thenThrow(new ObjectNotFoundException(Product.class));
+
+    OrderDto orderDto = OrderDto.builder()
+                        .customerId(1)
+                        .status(OrderStatus.INITIATED)
+                        .orderItems(getSampleOrderItemsDto(1,4))
+                        .build();
+
+    assertThrows(ObjectNotFoundException.class,() -> orderService.create(orderDto));
+  }
+
+private Customer getSampleCustomer(int customerId){
+ return Customer.builder()
+        .id(customerId)
+        .name("Manu")
+				.phone("+91934345")
+				.email("[email protected]")
+				.street("acd")
+				.state("asd")
+				.profilePic("http://imageurl")
+				.countryCode("KWI")
+				.build();
+
+}
+
+private OrderItemDto[] getSampleOrderItemsDto(int productId,int quantity){
+  OrderItemDto[] orderItems = new OrderItemDto[1] ;
+  orderItems[0]= OrderItemDto.builder()
+          .productId(productId)
+          .quantity(quantity)
+          .build();
+  return orderItems;
+}
+
+private Product getSampleProduct(int productId){
+return Product.builder()
+      .name("Mobile")
+      .image("http//:ughuogwxsjhg.com")
+      .description(("Samsung Galaxy A7"))
+      .unitPrice(5)
+      .category(getSampleCategory())
+      .build();
+}
+
+private Category getSampleCategory(){
+  return Category.builder()
+        .name("Electronics")
+        .build();
+}
+
+private List<OrderItem> getSampleOrderItems(Orders order,int productId, int quantity){
+  List<OrderItem> orderItems = new ArrayList<OrderItem>();
+  orderItems.add(OrderItem.builder().order(order).quantity(quantity).product(getSampleProduct(productId)).build());
+return orderItems;
+}
+
+}