test: 사용자 광고 API 조회 계약 검증

src/test/java/com/swyp/picke/domain/ad/controller/AdControllerTest.java

@@ -0,0 +1,32 @@
+package com.swyp.picke.domain.ad.controller;
+
+import com.swyp.picke.domain.ad.dto.response.AdResponse;
+import com.swyp.picke.domain.ad.enums.AdNetwork;
+import com.swyp.picke.domain.ad.enums.AdSlotCode;
+import com.swyp.picke.domain.ad.enums.AdTargetOs;
+import com.swyp.picke.domain.ad.service.AdQueryService;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+import static org.mockito.Mockito.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+class AdControllerTest {
+    @Test
+    void previewUsesExactUserResponseWithoutRecordingImpressions() throws Exception {
+        AdQueryService service = mock(AdQueryService.class);
+        AdResponse ad = new AdResponse("sample01", AdNetwork.ADPICK, "사용자 광고", "상품 설명",
+                "https://example.com/image.jpg", "구매하러 가기", "https://ad.picke.store/c/sample01", "광고");
+        when(service.findServableAds(AdSlotCode.HOME_FEED, AdTargetOs.IOS, 5)).thenReturn(List.of(ad));
+        MockMvcBuilders.standaloneSetup(new AdController(service)).build()
+                .perform(get("/api/v1/ads").accept(org.springframework.http.MediaType.APPLICATION_JSON).param("slot", "HOME_FEED").param("os", "IOS").param("size", "5"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.data.length()").value(1))
+                .andExpect(jsonPath("$.data[0].code").value("sample01"))
+                .andExpect(jsonPath("$.data[0].title").value("사용자 광고"))
+                .andExpect(jsonPath("$.data[0].label").value("광고"));
+        verify(service).findServableAds(AdSlotCode.HOME_FEED, AdTargetOs.IOS, 5);
+        verifyNoMoreInteractions(service);
+    }
+}