Test : 세션에 값 임시 저장 테스트 추가

-추가된 내용 :
1. 세션에 orderId, amount 값을 임시 저장한 것이 제대로 저장되었는지 테스트
이유 : 결제 최종 승인 요청 전에 값이 변조되지 않았는지 검증하기 위함

미흡 :
결제 요청 받았을 때, 세션에 값이 저장되지 않았을 경우에 대한 예외 처리 미완
테스트 코드에 대한 부족함이 느껴져 찜찜함이 있다.

src/test/java/com/tasksprints/auction/api/PaymentControllerTest.java

@@ -0,0 +1,52 @@
+package com.tasksprints.auction.api;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.tasksprints.auction.api.payment.PaymentController;
+import com.tasksprints.auction.common.constant.ApiResponseMessages;
+import com.tasksprints.auction.domain.payment.dto.request.PaymentRequest;
+import com.tasksprints.auction.domain.payment.service.PaymentService;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.data.jpa.mapping.JpaMetamodelMappingContext;
+import org.springframework.http.MediaType;
+import org.springframework.mock.web.MockHttpSession;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.math.BigDecimal;
+
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@WebMvcTest(PaymentController.class)
+@MockBean(JpaMetamodelMappingContext.class)
+public class PaymentControllerTest {
+    @Autowired
+    private MockMvc mockMvc;
+
+    @MockBean
+    private PaymentService paymentService;
+
+    @Autowired
+    private ObjectMapper objectMapper;
+
+    @MockBean MockHttpSession session;
+    @Test
+    @DisplayName("결제 전 임시 값 저장")
+    public void 결제_전_임시_값_저장() throws Exception {
+        PaymentRequest.Prepare prepareRequest = new PaymentRequest.Prepare("test1", BigDecimal.valueOf(1000.00));
+
+        mockMvc.perform(post("/api/v1/payment/prepare")
+                .session(session)
+                .contentType(MediaType.APPLICATION_JSON)
+                .content(objectMapper.writeValueAsString(prepareRequest)))
+            .andExpect(status().isOk())
+            .andExpect(jsonPath("$.message").value(ApiResponseMessages.PAYMENT_PREPARED_SUCCESS));
+
+    }
+}

src/test/java/com/tasksprints/auction/domain/payment/repository/PaymentRepositoryTest.java

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+package com.tasksprints.auction.domain.payment.repository;
+
+public class PaymentRepositoryTest {
+}

src/test/java/com/tasksprints/auction/domain/payment/service/PaymentServiceImplTest.java

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+package com.tasksprints.auction.domain.payment.service;
+
+import com.tasksprints.auction.domain.payment.dto.request.PaymentRequest;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.mock.web.MockHttpSession;
+
+import java.math.BigDecimal;
+import static org.assertj.core.api.Assertions.*;
+
+
+@ExtendWith(MockitoExtension.class)
+public class PaymentServiceImplTest {
+
+    @InjectMocks
+    private PaymentServiceImpl paymentService;
+
+//    @Mock
+//    private MockHttpSession MockSession;
+
+    @Nested
+    @DisplayName("결제 전 세션 임시 저장 테스트")
+    class 임시_저장_테스트{
+        @Test
+        void 결제_요청을_받았을_때_세션에_값이_저장되면_성공한다 () {
+        //given
+        MockHttpSession session = new MockHttpSession();
+        String orderId = "testOrderId";
+        BigDecimal amount = BigDecimal.valueOf(1000.00);
+        PaymentRequest.Prepare prepareRequest = new PaymentRequest.Prepare(orderId, amount);
+        //when
+        paymentService.prepare(session, prepareRequest);
+        //then
+        assertThat(session.getAttribute("orderId")).isEqualTo(orderId);
+        assertThat(session.getAttribute("amount")).isEqualTo(amount);
+        }
+        @Test
+        void 결제_요청을_받았을_때_세션에_값이_저장되지_않으면_예외_처리 () {
+            //given
+            //when
+            //then
+        }
+    }
+}