feat: add group buy secondhand and file storage

backend/src/test/java/com/linhelp/feedback/FeedbackServiceTests.java

@@ -0,0 +1,23 @@
+package com.linhelp.feedback;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class FeedbackServiceTests {
+    @Test
+    void createFeedbackStartsPending() {
+        FeedbackService service = new FeedbackService();
+        FeedbackRequest request = new FeedbackRequest();
+        request.setTenantId(1L);
+        request.setCommunityId(1L);
+        request.setCategory("DELIVERY");
+        request.setContent("配送慢了");
+        request.setContactPhone("13800000000");
+
+        FeedbackResponse response = service.create(100L, request);
+
+        assertThat(response.getUserId()).isEqualTo(100L);
+        assertThat(response.getStatus()).isEqualTo(FeedbackService.STATUS_PENDING);
+    }
+}

backend/src/test/java/com/linhelp/groupbuy/GroupBuyServiceTests.java

@@ -0,0 +1,62 @@
+package com.linhelp.groupbuy;
+
+import com.linhelp.common.enums.DeliveryMethod;
+import com.linhelp.common.enums.GroupBuyOrderStatus;
+import org.junit.jupiter.api.Test;
+
+import java.time.LocalDateTime;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+class GroupBuyServiceTests {
+    @Test
+    void cannotOrderAfterGroupBuyDeadline() {
+        GroupBuyService groupBuyService = new GroupBuyService();
+        GroupBuyOrderService orderService = new GroupBuyOrderService(groupBuyService);
+        GroupBuyResponse groupBuy = groupBuyService.create(groupBuyRequest(LocalDateTime.now().minusMinutes(1)));
+        groupBuyService.start(groupBuy.getId());
+
+        assertThatThrownBy(() -> orderService.create(1L, orderRequest(groupBuy.getId(), DeliveryMethod.IMMEDIATE)))
+                .hasMessageContaining("团购已截单");
+    }
+
+    @Test
+    void groupBuyOrderCanBePreparedForSelfPickup() {
+        GroupBuyService groupBuyService = new GroupBuyService();
+        GroupBuyOrderService orderService = new GroupBuyOrderService(groupBuyService);
+        GroupBuyResponse groupBuy = groupBuyService.create(groupBuyRequest(LocalDateTime.now().plusDays(1)));
+        groupBuyService.start(groupBuy.getId());
+
+        GroupBuyOrderResponse order = orderService.create(1L, orderRequest(groupBuy.getId(), DeliveryMethod.SELF_PICKUP));
+        orderService.confirm(order.getId());
+        orderService.markReady(order.getId());
+
+        assertThat(orderService.detail(order.getId()).getStatus()).isEqualTo(GroupBuyOrderStatus.PENDING_PICKUP);
+    }
+
+    private GroupBuyRequest groupBuyRequest(LocalDateTime endTime) {
+        GroupBuyRequest request = new GroupBuyRequest();
+        request.setTenantId(1L);
+        request.setCommunityId(1L);
+        request.setTitle("今日鸡蛋团购");
+        request.setCoverUrl("https://img.test/egg.jpg");
+        request.setPriceCent(2990);
+        request.setStock(100);
+        request.setStartTime(LocalDateTime.now().minusHours(1));
+        request.setEndTime(endTime);
+        request.setPickupAddress("小区北门");
+        return request;
+    }
+
+    private GroupBuyOrderRequest orderRequest(Long groupBuyId, DeliveryMethod deliveryMethod) {
+        GroupBuyOrderRequest request = new GroupBuyOrderRequest();
+        request.setTenantId(1L);
+        request.setCommunityId(1L);
+        request.setGroupBuyId(groupBuyId);
+        request.setAddressId(1L);
+        request.setQuantity(2);
+        request.setDeliveryMethod(deliveryMethod);
+        return request;
+    }
+}

backend/src/test/java/com/linhelp/secondhand/SecondGoodsReviewTests.java

@@ -0,0 +1,48 @@
+package com.linhelp.secondhand;
+
+import com.linhelp.common.enums.SecondGoodsStatus;
+import org.junit.jupiter.api.Test;
+
+import java.util.Arrays;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+class SecondGoodsReviewTests {
+    @Test
+    void newListingStartsPendingAndBecomesVisibleAfterApproval() {
+        SecondGoodsService service = new SecondGoodsService();
+        SecondGoodsResponse listing = service.create(1L, request());
+
+        assertThat(listing.getStatus()).isEqualTo(SecondGoodsStatus.PENDING_REVIEW);
+        assertThat(service.listPublic(1L, null)).isEmpty();
+
+        service.approve(listing.getId());
+
+        assertThat(service.listPublic(1L, null)).extracting(SecondGoodsResponse::getId)
+                .containsExactly(listing.getId());
+    }
+
+    @Test
+    void rejectionRequiresReason() {
+        SecondGoodsService service = new SecondGoodsService();
+        SecondGoodsResponse listing = service.create(1L, request());
+
+        assertThatThrownBy(() -> service.reject(listing.getId(), ""))
+                .hasMessageContaining("拒绝原因不能为空");
+    }
+
+    private SecondGoodsRequest request() {
+        SecondGoodsRequest request = new SecondGoodsRequest();
+        request.setTenantId(1L);
+        request.setCommunityId(1L);
+        request.setTitle("九成新儿童车");
+        request.setPriceCent(9900);
+        request.setDescription("小区内自提");
+        request.setCategory("母婴");
+        request.setContactPhone("13800000000");
+        request.setTradeMethod("FACE_TO_FACE");
+        request.setImageUrls(Arrays.asList("https://img.test/bike.jpg"));
+        return request;
+    }
+}

backend/src/test/java/com/linhelp/storage/FileStorageServiceTests.java

@@ -0,0 +1,30 @@
+package com.linhelp.storage;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.mock.web.MockMultipartFile;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+class FileStorageServiceTests {
+    @Test
+    void imageUploadUsesTenantCommunityDatePrefix() {
+        FileStorageService service = new FileStorageService();
+        MockMultipartFile file = new MockMultipartFile("file", "avatar.png", "image/png", new byte[]{1, 2, 3});
+
+        FileUploadResponse response = service.upload(1L, 2L, file);
+
+        assertThat(response.getObjectKey()).startsWith("tenant/1/community/2/");
+        assertThat(response.getObjectKey()).endsWith(".png");
+        assertThat(response.getUrl()).contains(response.getObjectKey());
+    }
+
+    @Test
+    void nonImageUploadIsRejected() {
+        FileStorageService service = new FileStorageService();
+        MockMultipartFile file = new MockMultipartFile("file", "doc.pdf", "application/pdf", new byte[]{1});
+
+        assertThatThrownBy(() -> service.upload(1L, 1L, file))
+                .hasMessageContaining("仅支持图片上传");
+    }
+}