✅ add test for S3ClientServiceTest

backend/src/test/java/net/pengcook/image/service/S3ClientServiceTest.java

@@ -0,0 +1,63 @@
+package net.pengcook.image.service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.net.MalformedURLException;
+import java.net.URL;
+import net.pengcook.image.dto.ImageUrlResponse;
+import net.pengcook.image.dto.PresignedUrlResponse;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import software.amazon.awssdk.services.s3.presigner.S3Presigner;
+import software.amazon.awssdk.services.s3.presigner.model.PresignedPutObjectRequest;
+import software.amazon.awssdk.services.s3.presigner.model.PutObjectPresignRequest;
+
+@SpringBootTest
+class S3ClientServiceTest {
+
+    private static final String FILE_NAME = "testImage.jpg";
+
+    @Autowired
+    private S3ClientService s3ClientService;
+
+    @MockBean
+    private S3Presigner s3Presigner;
+
+    @Value("${cloud.aws.S3.cloudfront-cname}")
+    private String cloudfrontCname;
+
+    @Test
+    @DisplayName("presigned url을 요청한다.")
+    void generatePresignedUrl() throws MalformedURLException {
+        String expectedPresignedUrl =
+                "https://bucketName.s3.region.amazonaws.com/serviceName/image/fileName?X-Amz-Security-Token=REDACTED&X-Amz-Algorithm=REDACTED&X-Amz-Date=REDACTED&X-Amz-SignedHeaders=REDACTED&X-Amz-Expires=REDACTED&X-Amz-Credential=REDACTED&X-Amz-Signature=REDACTED";
+        URL presignedUrl = new URL(expectedPresignedUrl);
+        PresignedPutObjectRequest presignedPutObjectRequest = mock(PresignedPutObjectRequest.class);
+
+        when(presignedPutObjectRequest.url())
+                .thenReturn(presignedUrl);
+        when(s3Presigner.presignPutObject(any(PutObjectPresignRequest.class)))
+                .thenReturn(presignedPutObjectRequest);
+        PresignedUrlResponse presignedUrlResponse = s3ClientService.generatePresignedPutUrl(FILE_NAME);
+
+        assertThat(presignedUrlResponse.url())
+                .isEqualTo(expectedPresignedUrl);
+    }
+
+    @Test
+    @DisplayName("이미지 조회 url을 요청한다.")
+    void getImageUrl() {
+        String expectedImageUrl = cloudfrontCname + "/pengcook/image/" + FILE_NAME;
+        ImageUrlResponse imageUrlResponse = new ImageUrlResponse(expectedImageUrl);
+
+        assertThat(s3ClientService.getImageUrl(FILE_NAME))
+                .isEqualTo(imageUrlResponse);
+    }
+}