优化目录结构

backend/src/test/java/com/openisle/service/CosImageUploaderTest.java

@@ -0,0 +1,23 @@
+package com.openisle.service;
+
+import com.qcloud.cos.COSClient;
+import com.qcloud.cos.model.PutObjectRequest;
+import com.openisle.repository.ImageRepository;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+import static org.mockito.Mockito.*;
+
+class CosImageUploaderTest {
+    @Test
+    void uploadReturnsUrl() {
+        COSClient client = mock(COSClient.class);
+        ImageRepository repo = mock(ImageRepository.class);
+        CosImageUploader uploader = new CosImageUploader(client, repo, "bucket", "http://cos.example.com");
+
+        String url = uploader.upload("data".getBytes(), "img.png").join();
+
+        verify(client).putObject(any(PutObjectRequest.class));
+        assertTrue(url.matches("http://cos.example.com/dynamic_assert/[a-f0-9]{32}\\.png"));
+    }
+}