1 changed files with 145 additions and 0 deletions
--- a/src/test/java/com/acquirex/service/CardAcquisitionServiceTest.java
+++ b/src/test/java/com/acquirex/service/CardAcquisitionServiceTest.java
@ -0,0 +1,145 @@
+package com.acquirex.service;
+
+import com.acquirex.dto.AcquisitionDto.Request;
+import com.acquirex.dto.AcquisitionDto.Response;
+import com.acquirex.entity.CardAcquisition;
+import com.acquirex.entity.CardAcquisition.CardAcquisitionRepository;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+
+import java.math.BigDecimal;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.*;
+
+@ExtendWith(MockitoExtension.class)
+class CardAcquisitionServiceTest {
+
+    @Mock
+    private CardAcquisitionRepository repository;
+
+    private CardAcquisitionService service;
+
+    @BeforeEach
+    void setUp() {
+        service = new CardAcquisitionService(repository);
+    }
+
+    @Test
+    @DisplayName("유효한 카드로 정상 승인 처리")
+    void processAcquisition_ValidCard_ShouldApprove() {
+        Request request = new Request();
+        request.setCardNumber("4532015112830366");
+        request.setMerchantId("MERCHANT001");
+        request.setAmount(new BigDecimal("100000"));
+        request.setCurrency("KRW");
+
+        when(repository.save(any(CardAcquisition.class)))
+                .thenAnswer(invocation -> {
+                    CardAcquisition acq = invocation.getArgument(0);
+                    acq.setId(1L);
+                    return acq;
+                });
+
+        Response response = service.processAcquisition(request);
+
+        assertEquals("APPROVED", response.getStatus());
+        assertNotNull(response.getApprovalCode());
+        assertEquals(6, response.getApprovalCode().length());
+        assertEquals(new BigDecimal("100000"), response.getAmount());
+        assertEquals("KRW", response.getCurrency());
+    }
+
+    @Test
+    @DisplayName("유효하지 않은 카드번호 거부")
+    void processAcquisition_InvalidCardNumber_ShouldReject() {
+        Request request = new Request();
+        request.setCardNumber("1234567890123456");
+        request.setMerchantId("MERCHANT001");
+        request.setAmount(new BigDecimal("50000"));
+        request.setCurrency("KRW");
+
+        when(repository.save(any(CardAcquisition.class)))
+                .thenAnswer(invocation -> {
+                    CardAcquisition acq = invocation.getArgument(0);
+                    acq.setId(1L);
+                    return acq;
+                });
+
+        Response response = service.processAcquisition(request);
+
+        assertEquals("REJECTED", response.getStatus());
+        assertNull(response.getApprovalCode());
+        assertTrue(response.getMessage().contains("유효하지 않은"));
+    }
+
+    @Test
+    @DisplayName("한도 초과 거래 거부")
+    void processAcquisition_ExceedLimit_ShouldReject() {
+        Request request = new Request();
+        request.setCardNumber("4532015112830366");
+        request.setMerchantId("MERCHANT001");
+        request.setAmount(new BigDecimal("15000000"));
+        request.setCurrency("KRW");
+
+        when(repository.save(any(CardAcquisition.class)))
+                .thenAnswer(invocation -> {
+                    CardAcquisition acq = invocation.getArgument(0);
+                    acq.setId(1L);
+                    return acq;
+                });
+
+        Response response = service.processAcquisition(request);
+
+        assertEquals("REJECTED", response.getStatus());
+        assertTrue(response.getMessage().contains("한도"));
+    }
+
+    @Test
+    @DisplayName("의심스러운 거래 거부 (9999 시작 + 고액)")
+    void processAcquisition_SuspiciousTransaction_ShouldReject() {
+        Request request = new Request();
+        request.setCardNumber("9999123456789012");
+        request.setMerchantId("MERCHANT001");
+        request.setAmount(new BigDecimal("6000000"));
+        request.setCurrency("KRW");
+
+        when(repository.save(any(CardAcquisition.class)))
+                .thenAnswer(invocation -> {
+                    CardAcquisition acq = invocation.getArgument(0);
+                    acq.setId(1L);
+                    return acq;
+                });
+
+        Response response = service.processAcquisition(request);
+
+        assertEquals("REJECTED", response.getStatus());
+        assertTrue(response.getMessage().contains("의심스러운"));
+    }
+
+    @Test
+    @DisplayName("카드번호 마스킹 처리 확인")
+    void processAcquisition_CardNumberMasked() {
+        Request request = new Request();
+        request.setCardNumber("4532015112830366");
+        request.setMerchantId("MERCHANT001");
+        request.setAmount(new BigDecimal("100000"));
+        request.setCurrency("KRW");
+
+        when(repository.save(any(CardAcquisition.class)))
+                .thenAnswer(invocation -> {
+                    CardAcquisition acq = invocation.getArgument(0);
+                    acq.setId(1L);
+                    return acq;
+                });
+
+        service.processAcquisition(request);
+
+        verify(repository, times(2)).save(argThat(acq -> acq.getCardNumber().equals("4532****0366")));
+    }
+}