price：完成满减送的价格计算~

yudao-module-mall/yudao-module-market-api/src/main/java/cn/iocoder/yudao/module/market/api/price/dto/PriceCalculateRespDTO.java

@@ -103,6 +103,10 @@ public class PriceCalculateRespDTO {
     @Data
     public static class OrderItem {
 
+        /**
+         * SPU 编号
+         */
+        private Long spuId;
         /**
          * SKU 编号
          */

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/convert/price/PriceConvert.java

@@ -30,9 +30,10 @@ public interface PriceConvert {
         skuList.forEach(sku -> {
             Integer count = skuIdCountMap.get(sku.getId());
             PriceCalculateRespDTO.OrderItem orderItem = new PriceCalculateRespDTO.OrderItem()
-                    .setSkuId(sku.getId()).setCount(count).setOriginalUnitPrice(sku.getPrice())
-                    .setOriginalPrice(sku.getPrice() * count).setDiscountPrice(0).setOrderPartPrice(0);
-            orderItem.setPayPrice(orderItem.getOriginalPrice()).setOrderDividePrice(orderItem.getOrderDividePrice());
+                    .setSpuId(sku.getSpuId()).setSkuId(sku.getId()).setCount(count)
+                    .setOriginalUnitPrice(sku.getPrice()).setOriginalPrice(sku.getPrice() * count)
+                    .setDiscountPrice(0).setOrderPartPrice(0);
+            orderItem.setPayPrice(orderItem.getOriginalPrice()).setOrderDividePrice(orderItem.getOriginalPrice());
             priceCalculate.getOrder().getItems().add(orderItem);
             // 补充价格信息到 Order 中
             order.setOriginalPrice(order.getOriginalPrice() + orderItem.getOriginalPrice()).setPayPrice(order.getOriginalPrice());

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/dal/dataobject/reward/RewardActivityDO.java

@@ -92,7 +92,7 @@ public class RewardActivityDO extends BaseDO {
         /**
          * 优惠价格，单位：分
          */
-        private Integer promotionPrice;
+        private Integer discountPrice;
         /**
          * 是否包邮
          */
@@ -100,7 +100,7 @@ public class RewardActivityDO extends BaseDO {
         /**
          * 赠送的积分
          */
-        private Integer integral;
+        private Integer point;
         /**
          * 赠送的优惠劵编号的数组
          */

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/price/PriceServiceImpl.java

@@ -1,14 +1,19 @@
 package cn.iocoder.yudao.module.market.service.price;
 
+import cn.hutool.core.collection.CollUtil;
+import cn.hutool.core.lang.Assert;
 import cn.hutool.core.util.StrUtil;
 import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
 import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
 import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
 import cn.iocoder.yudao.module.market.convert.price.PriceConvert;
 import cn.iocoder.yudao.module.market.dal.dataobject.discount.DiscountProductDO;
+import cn.iocoder.yudao.module.market.dal.dataobject.reward.RewardActivityDO;
+import cn.iocoder.yudao.module.market.enums.common.PromotionConditionTypeEnum;
 import cn.iocoder.yudao.module.market.enums.common.PromotionLevelEnum;
 import cn.iocoder.yudao.module.market.enums.common.PromotionTypeEnum;
 import cn.iocoder.yudao.module.market.service.discount.DiscountService;
+import cn.iocoder.yudao.module.market.service.reward.RewardService;
 import cn.iocoder.yudao.module.product.api.sku.ProductSkuApi;
 import cn.iocoder.yudao.module.product.api.sku.dto.ProductSkuRespDTO;
 import com.google.common.base.Suppliers;
@@ -16,12 +21,15 @@ import org.springframework.stereotype.Service;
 import org.springframework.validation.annotation.Validated;
 
 import javax.annotation.Resource;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.function.Supplier;
 
 import static cn.iocoder.yudao.framework.common.exception.util.ServiceExceptionUtil.exception;
 import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.convertSet;
+import static cn.iocoder.yudao.framework.common.util.collection.CollectionUtils.getSumValue;
 import static cn.iocoder.yudao.module.product.enums.ErrorCodeConstants.SKU_NOT_EXISTS;
 import static java.util.Collections.singletonList;
 
@@ -32,6 +40,11 @@ import static java.util.Collections.singletonList;
  * 参考文档：
  * 1. <a href="https://help.youzan.com/displaylist/detail_4_4-1-60384">有赞文档：限时折扣、满减送、优惠券哪个优先计算？</a>
  *
+ * TODO 芋艿：进一步完善
+ * 1. 限时折扣：指定金额、减免金额、折扣
+ * 2. 满减送：循环、折扣
+ * 3.
+ *
  * @author 芋道源码
  */
 @Service
@@ -40,6 +53,8 @@ public class PriceServiceImpl implements PriceService {
 
     @Resource
     private DiscountService discountService;
+    @Resource
+    private RewardService rewardService;
 
     @Resource
     private ProductSkuApi productSkuApi;
@@ -53,7 +68,8 @@ public class PriceServiceImpl implements PriceService {
 
         // 计算商品级别的价格
         calculatePriceForSkuLevel(calculateReqDTO.getUserId(), priceCalculate);
-        // 计算【满减送】促销 TODO 待实现
+        // 计算订单级别的价格
+        calculatePriceForOrderLevel(calculateReqDTO.getUserId(), priceCalculate);
         // 计算【优惠劵】促销 TODO 待实现
         return priceCalculate;
     }
@@ -75,10 +91,12 @@ public class PriceServiceImpl implements PriceService {
         return skus;
     }
 
+    // ========== 计算商品级别的价格 ==========
+
     /**
      * 计算商品级别的价格，例如说：
      * 1. 会员折扣
-     * 2. 限时折扣
+     * 2. 限时折扣 {@link cn.iocoder.yudao.module.market.dal.dataobject.discount.DiscountActivityDO}
      *
      * 其中，会员折扣、限时折扣取最低价
      *
@@ -138,10 +156,126 @@ public class PriceServiceImpl implements PriceService {
         modifyOrderItemPayPrice(orderItem, promotionPrice, priceCalculate);
     }
 
+    // TODO 芋艿：提前实现
+    private Supplier<Double> getMemberDiscountSupplier(Long userId) {
+        return Suppliers.memoize(() -> {
+            if (userId == 1) {
+                return 90d;
+            }
+            if (userId == 2) {
+                return 80d;
+            }
+            return null; // 无优惠
+        });
+    }
+
+    // ========== 计算商品级别的价格 ==========
+
+    /**
+     * 计算订单级别的价格，例如说：
+     * 1. 满减送 {@link cn.iocoder.yudao.module.market.dal.dataobject.reward.RewardActivityDO}
+     *
+     * @param userId 用户编号
+     * @param priceCalculate 价格计算的结果
+     */
+    @SuppressWarnings("unused")
+    private void calculatePriceForOrderLevel(Long userId, PriceCalculateRespDTO priceCalculate) {
+        // 获取 SKU 级别的所有优惠信息
+        Set<Long> spuIds = convertSet(priceCalculate.getOrder().getItems(), PriceCalculateRespDTO.OrderItem::getSpuId);
+        Map<RewardActivityDO, Set<Long>> rewardActivities = rewardService.getMatchRewardActivities(spuIds);
+
+        // 处理满减送活动
+        if (CollUtil.isNotEmpty(rewardActivities)) {
+            rewardActivities.forEach((rewardActivity, activitySpuIds) -> {
+                List<PriceCalculateRespDTO.OrderItem> orderItems = CollectionUtils.filterList(priceCalculate.getOrder().getItems(),
+                        orderItem -> CollUtil.contains(activitySpuIds, orderItem.getSpuId()));
+                calculatePriceByRewardActivity(priceCalculate, orderItems, rewardActivity);
+            });
+        }
+    }
+
+    private void calculatePriceByRewardActivity(PriceCalculateRespDTO priceCalculate, List<PriceCalculateRespDTO.OrderItem> orderItems,
+                                                RewardActivityDO rewardActivity) {
+        // 获得最大匹配的满减送活动的规格
+        RewardActivityDO.Rule rule = getLastMatchRewardActivityRule(rewardActivity, orderItems);
+        if (rule == null) {
+            // 获取不到的情况下，记录不满足的优惠明细
+            addNotMeetPromotion(priceCalculate, orderItems, rewardActivity.getId(), rewardActivity.getName(),
+                    PromotionTypeEnum.REWARD_ACTIVITY.getType(), PromotionLevelEnum.ORDER.getLevel(),
+                    getRewardActivityNotMeetTip(rewardActivity));
+            return;
+        }
+
+        // 分摊金额
+        // TODO 芋艿：limit 不能超过最大价格
+        List<Integer> discountPartPrices = dividePrice(orderItems, rule.getDiscountPrice());
+        // 记录优惠明细
+        addPromotion(priceCalculate, orderItems, rewardActivity.getId(), rewardActivity.getName(),
+                PromotionTypeEnum.REWARD_ACTIVITY.getType(), PromotionLevelEnum.ORDER.getLevel(), discountPartPrices,
+                true, StrUtil.format("满减送：省 {} 元", formatPrice(rule.getDiscountPrice())));
+        // 修改 SKU 的分摊
+        for (int i = 0; i < orderItems.size(); i++) {
+            modifyOrderItemOrderPartPriceFromDiscountPrice(orderItems.get(i), discountPartPrices.get(i), priceCalculate);
+        }
+    }
+
+    /**
+     * 获得最大匹配的满减送活动的规格
+     *
+     * @param rewardActivity 满减送活动
+     * @param orderItems 商品项
+     * @return 匹配的活动规格
+     */
+    private RewardActivityDO.Rule getLastMatchRewardActivityRule(RewardActivityDO rewardActivity,
+                                                                 List<PriceCalculateRespDTO.OrderItem> orderItems) {
+        Integer count = CollectionUtils.getSumValue(orderItems, PriceCalculateRespDTO.OrderItem::getCount, Integer::sum);
+        // price 的计算逻辑，使用 orderDividePrice 的原因，主要考虑分摊后，这个才是该 SKU 当前真实的支付总价
+        Integer price = CollectionUtils.getSumValue(orderItems, PriceCalculateRespDTO.OrderItem::getOrderDividePrice, Integer::sum);
+        assert count != null && price != null;
+        for (int i = rewardActivity.getRules().size() - 1; i >= 0; i--) {
+            RewardActivityDO.Rule rule = rewardActivity.getRules().get(i);
+            if (PromotionConditionTypeEnum.PRICE.getType().equals(rewardActivity.getConditionType())
+                    && price >= rule.getLimit()) {
+                return rule;
+            }
+            if (PromotionConditionTypeEnum.COUNT.getType().equals(rewardActivity.getConditionType())
+                    && count >= rule.getLimit()) {
+                return rule;
+            }
+        }
+        return null;
+    }
+
+    /**
+     * 获得满减送活动部匹配时的提示
+     *
+     * @param rewardActivity 满减送活动
+     * @return 提示
+     */
+    private String getRewardActivityNotMeetTip(RewardActivityDO rewardActivity) {
+        return "TODO"; // TODO 芋艿：后面再想想
+    }
+
+    // ========== 其它相对通用的方法 ==========
+
+    /**
+     * 添加单个 OrderItem 的营销明细
+     *
+     * @param priceCalculate 价格计算结果
+     * @param orderItem 单个订单商品 SKU
+     * @param id 营销编号
+     * @param name 营销名字
+     * @param type 营销类型
+     * @param level 营销级别
+     * @param newPayPrice 新的单实付金额（总）
+     * @param meet 是否满足优惠条件
+     * @param meetTip 满足条件的提示
+     */
     private void addPromotion(PriceCalculateRespDTO priceCalculate, PriceCalculateRespDTO.OrderItem orderItem,
                               Long id, String name, Integer type, Integer level,
                               Integer newPayPrice, Boolean meet, String meetTip) {
         // 创建营销明细 Item
+        // TODO 芋艿：orderItem.getPayPrice() 要不要改成 orderDividePrice；同时，newPayPrice 要不要改成直接传递 discountPrice
         PriceCalculateRespDTO.PromotionItem promotionItem = new PriceCalculateRespDTO.PromotionItem().setSkuId(orderItem.getSkuId())
                 .setOriginalPrice(orderItem.getPayPrice()).setDiscountPrice(orderItem.getPayPrice() - newPayPrice);
         // 创建营销明细
@@ -152,6 +286,60 @@ public class PriceServiceImpl implements PriceService {
         priceCalculate.getPromotions().add(promotion);
     }
 
+    /**
+     * 添加多个 OrderItem 的营销明细
+     *
+     * @param priceCalculate 价格计算结果
+     * @param orderItems 多个订单商品 SKU
+     * @param id 营销编号
+     * @param name 营销名字
+     * @param type 营销类型
+     * @param level 营销级别
+     * @param discountPrices 多个订单商品 SKU 的优惠价格（总），和 orderItems 一一对应
+     * @param meet 是否满足优惠条件
+     * @param meetTip 满足条件的提示
+     */
+    private void addPromotion(PriceCalculateRespDTO priceCalculate, List<PriceCalculateRespDTO.OrderItem> orderItems,
+                              Long id, String name, Integer type, Integer level,
+                              List<Integer> discountPrices, Boolean meet, String meetTip) {
+        // 创建营销明细 Item
+        List<PriceCalculateRespDTO.PromotionItem> promotionItems = new ArrayList<>(discountPrices.size());
+        for (int i = 0; i < orderItems.size(); i++) {
+            PriceCalculateRespDTO.OrderItem orderItem = orderItems.get(i);
+            promotionItems.add(new PriceCalculateRespDTO.PromotionItem().setSkuId(orderItem.getSkuId())
+                    .setOriginalPrice(orderItem.getPayPrice()).setDiscountPrice(discountPrices.get(i)));
+        }
+        // 创建营销明细
+        PriceCalculateRespDTO.Promotion promotion = new PriceCalculateRespDTO.Promotion()
+                .setId(id).setName(name).setType(type).setLevel(level)
+                .setOriginalPrice(getSumValue(orderItems, PriceCalculateRespDTO.OrderItem::getOrderDividePrice, Integer::sum))
+                .setDiscountPrice(getSumValue(discountPrices, value -> value, Integer::sum))
+                .setItems(promotionItems).setMeet(meet).setMeetTip(meetTip);
+        priceCalculate.getPromotions().add(promotion);
+    }
+
+    private void addNotMeetPromotion(PriceCalculateRespDTO priceCalculate, List<PriceCalculateRespDTO.OrderItem> orderItems,
+                                     Long id, String name, Integer type, Integer level, String meetTip) {
+        // 创建营销明细 Item
+        List<PriceCalculateRespDTO.PromotionItem> promotionItems = CollectionUtils.convertList(orderItems,
+                orderItem -> new PriceCalculateRespDTO.PromotionItem().setSkuId(orderItem.getSkuId())
+                        .setOriginalPrice(orderItem.getOrderDividePrice()).setDiscountPrice(0));
+        // 创建营销明细
+        Integer originalPrice = CollectionUtils.getSumValue(orderItems, PriceCalculateRespDTO.OrderItem::getOrderDividePrice, Integer::sum);
+        PriceCalculateRespDTO.Promotion promotion = new PriceCalculateRespDTO.Promotion()
+                .setId(id).setName(name).setType(type).setLevel(level)
+                .setOriginalPrice(originalPrice).setDiscountPrice(0)
+                .setItems(promotionItems).setMeet(false).setMeetTip(meetTip);
+        priceCalculate.getPromotions().add(promotion);
+    }
+
+    /**
+     * 修改 OrderItem 的 payPrice 价格，同时会修改 Order 的 payPrice 价格
+     *
+     * @param orderItem 订单商品 SKU
+     * @param newPayPrice 新的 payPrice 价格
+     * @param priceCalculate 价格计算结果
+     */
     private void modifyOrderItemPayPrice(PriceCalculateRespDTO.OrderItem orderItem, Integer newPayPrice,
                                          PriceCalculateRespDTO priceCalculate) {
         int diffPayPrice = orderItem.getPayPrice() - newPayPrice;
@@ -163,17 +351,45 @@ public class PriceServiceImpl implements PriceService {
         priceCalculate.getOrder().setPayPrice(priceCalculate.getOrder().getPayPrice() - diffPayPrice);
     }
 
-    // TODO 芋艿：提前实现
-    private Supplier<Double> getMemberDiscountSupplier(Long userId) {
-        return Suppliers.memoize(() -> {
-            if (userId == 1) {
-                return 90d;
-            }
-            if (userId == 2) {
-                return 80d;
+    /**
+     * 修改 OrderItem 的 orderPartPrice 价格，同时会修改 Order 的 discountPrice 价格
+     *
+     * 本质：分摊 Order 的 discountPrice 价格，到对应的 OrderItem 的 orderPartPrice 价格中
+     *
+     * @param orderItem 订单商品 SKU
+     * @param addOrderPartPrice 新增的
+     * @param priceCalculate 价格计算结果
+     */
+    private void modifyOrderItemOrderPartPriceFromDiscountPrice(PriceCalculateRespDTO.OrderItem orderItem, Integer addOrderPartPrice,
+                                                                PriceCalculateRespDTO priceCalculate) {
+        // 设置 OrderItem 价格相关字段
+        orderItem.setOrderPartPrice(orderItem.getOrderPartPrice() + addOrderPartPrice);
+        orderItem.setOrderDividePrice(orderItem.getPayPrice() - orderItem.getOrderPartPrice());
+        // 设置 Order 相关相关字段
+        PriceCalculateRespDTO.Order order = priceCalculate.getOrder();
+        order.setDiscountPrice(order.getDiscountPrice() + addOrderPartPrice);
+        order.setPayPrice(order.getPayPrice() - addOrderPartPrice);
+    }
+
+    private List<Integer> dividePrice(List<PriceCalculateRespDTO.OrderItem> orderItems, Integer price) {
+        List<Integer> prices = new ArrayList<>(orderItems.size());
+        Integer total = getSumValue(orderItems, PriceCalculateRespDTO.OrderItem::getOrderDividePrice, Integer::sum);
+        assert total != null;
+        int remainPrice = price;
+        // 遍历每一个，进行分摊
+        for (int i = 0; i < orderItems.size(); i++) {
+            PriceCalculateRespDTO.OrderItem orderItem = orderItems.get(i);
+            int partPrice;
+            if (i < orderItems.size() - 1) { // 减一的原因，是因为拆分时，如果按照比例，可能会出现.所以最后一个，使用反减
+                partPrice = (int) (price * (1.0D * orderItem.getOrderDividePrice() / total));
+                remainPrice -= partPrice;
+            } else {
+                partPrice = remainPrice;
             }
-            return null; // 无优惠
-        });
+            Assert.isTrue(partPrice > 0, "分摊金额必须大于 0");
+            prices.add(partPrice);
+        }
+        return prices;
     }
 
     private String formatPrice(Integer price) {

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/reward/RewardService.java

@@ -0,0 +1,23 @@
+package cn.iocoder.yudao.module.market.service.reward;
+
+import cn.iocoder.yudao.module.market.dal.dataobject.reward.RewardActivityDO;
+
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * 满减送 Service 接口
+ *
+ * @author 芋道源码
+ */
+public interface RewardService {
+
+    /**
+     * 基于指定的 SPU 编号数组，获得它们匹配的满减送活动
+     *
+     * @param spuIds SPU 编号数组
+     * @return 满减送活动，与对应的 SPU 编号的映射。即，value 就是 SPU 编号的集合
+     */
+    Map<RewardActivityDO, Set<Long>> getMatchRewardActivities(Set<Long> spuIds);
+
+}

yudao-module-mall/yudao-module-market-biz/src/main/java/cn/iocoder/yudao/module/market/service/reward/RewardServiceImpl.java

@@ -0,0 +1,26 @@
+package cn.iocoder.yudao.module.market.service.reward;
+
+import cn.iocoder.yudao.module.market.dal.dataobject.reward.RewardActivityDO;
+import org.springframework.stereotype.Service;
+import org.springframework.validation.annotation.Validated;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * 满减送 Service 实现类
+ *
+ * @author 芋道源码
+ */
+@Service
+@Validated
+public class RewardServiceImpl implements RewardService {
+
+    // TODO 芋艿：待实现
+    @Override
+    public Map<RewardActivityDO, Set<Long>> getMatchRewardActivities(Set<Long> spuIds) {
+        return Collections.emptyMap();
+    }
+
+}

yudao-module-mall/yudao-module-market-biz/src/test/java/cn/iocoder/yudao/module/market/service/price/PriceServiceTest.java

@@ -1,20 +1,27 @@
 package cn.iocoder.yudao.module.market.service.price;
 
 import cn.hutool.core.map.MapUtil;
-import cn.iocoder.yudao.framework.common.util.collection.SetUtils;
 import cn.iocoder.yudao.framework.test.core.ut.BaseMockitoUnitTest;
 import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateReqDTO;
 import cn.iocoder.yudao.module.market.api.price.dto.PriceCalculateRespDTO;
 import cn.iocoder.yudao.module.market.dal.dataobject.discount.DiscountProductDO;
+import cn.iocoder.yudao.module.market.dal.dataobject.reward.RewardActivityDO;
+import cn.iocoder.yudao.module.market.enums.common.PromotionConditionTypeEnum;
 import cn.iocoder.yudao.module.market.enums.common.PromotionLevelEnum;
 import cn.iocoder.yudao.module.market.enums.common.PromotionTypeEnum;
 import cn.iocoder.yudao.module.market.service.discount.DiscountService;
+import cn.iocoder.yudao.module.market.service.reward.RewardService;
 import cn.iocoder.yudao.module.product.api.sku.ProductSkuApi;
 import cn.iocoder.yudao.module.product.api.sku.dto.ProductSkuRespDTO;
 import org.junit.jupiter.api.Test;
 import org.mockito.InjectMocks;
 import org.mockito.Mock;
 
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.Set;
+
+import static cn.iocoder.yudao.framework.common.util.collection.SetUtils.asSet;
 import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomLongId;
 import static cn.iocoder.yudao.framework.test.core.util.RandomUtils.randomPojo;
 import static java.util.Arrays.asList;
@@ -36,6 +43,8 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
     @Mock
     private DiscountService discountService;
     @Mock
+    private RewardService rewardService;
+    @Mock
     private ProductSkuApi productSkuApi;
 
     @Test
@@ -46,7 +55,7 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
                 .setItems(singletonList(new PriceCalculateReqDTO.Item().setSkuId(10L).setCount(2)));
         // mock 方法(商品 SKU 信息)
         ProductSkuRespDTO productSku = randomPojo(ProductSkuRespDTO.class, o -> o.setId(10L).setPrice(100));
-        when(productSkuApi.getSkuList(eq(SetUtils.asSet(10L)))).thenReturn(singletonList(productSku));
+        when(productSkuApi.getSkuList(eq(asSet(10L)))).thenReturn(singletonList(productSku));
 
         // 调用
         PriceCalculateRespDTO priceCalculate = priceService.calculatePrice(calculateReqDTO);
@@ -96,13 +105,13 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
         // mock 方法(商品 SKU 信息)
         ProductSkuRespDTO productSku01 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(10L).setPrice(100));
         ProductSkuRespDTO productSku02 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(20L).setPrice(50));
-        when(productSkuApi.getSkuList(eq(SetUtils.asSet(10L, 20L)))).thenReturn(asList(productSku01, productSku02));
+        when(productSkuApi.getSkuList(eq(asSet(10L, 20L)))).thenReturn(asList(productSku01, productSku02));
         // mock 方法（限时折扣 DiscountActivity 信息）
         DiscountProductDO discountProduct01 = randomPojo(DiscountProductDO.class, o -> o.setActivityId(1000L).setActivityName("活动 1000 号")
                 .setSkuId(10L).setPromotionPrice(80));
         DiscountProductDO discountProduct02 = randomPojo(DiscountProductDO.class, o -> o.setActivityId(2000L).setActivityName("活动 2000 号")
                 .setSkuId(20L).setPromotionPrice(40));
-        when(discountService.getMatchDiscountProducts(eq(SetUtils.asSet(10L, 20L)))).thenReturn(
+        when(discountService.getMatchDiscountProducts(eq(asSet(10L, 20L)))).thenReturn(
                 MapUtil.builder(10L, discountProduct01).put(20L, discountProduct02).map());
 
         // 调用
@@ -167,4 +176,182 @@ public class PriceServiceTest extends BaseMockitoUnitTest {
         assertEquals(promotionItem02.getDiscountPrice(), 30);
     }
 
+    /**
+     * 测试满减送活动，匹配的情况
+     */
+    @Test
+    public void testCalculatePrice_rewardActivity() {
+        // 准备参数
+        PriceCalculateReqDTO calculateReqDTO = new PriceCalculateReqDTO().setUserId(randomLongId())
+                .setItems(asList(new PriceCalculateReqDTO.Item().setSkuId(10L).setCount(2),
+                        new PriceCalculateReqDTO.Item().setSkuId(20L).setCount(3),
+                        new PriceCalculateReqDTO.Item().setSkuId(30L).setCount(4)));
+        // mock 方法(商品 SKU 信息)
+        ProductSkuRespDTO productSku01 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(10L).setPrice(100).setSpuId(1L));
+        ProductSkuRespDTO productSku02 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(20L).setPrice(50).setSpuId(2L));
+        ProductSkuRespDTO productSku03 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(30L).setPrice(30).setSpuId(3L));
+        when(productSkuApi.getSkuList(eq(asSet(10L, 20L, 30L)))).thenReturn(asList(productSku01, productSku02, productSku03));
+        // mock 方法（限时折扣 DiscountActivity 信息）
+        RewardActivityDO rewardActivity01 = randomPojo(RewardActivityDO.class, o -> o.setId(1000L).setName("活动 1000 号")
+                .setSpuIds(asList(10L, 20L)).setConditionType(PromotionConditionTypeEnum.PRICE.getType())
+                .setRules(singletonList(new RewardActivityDO.Rule().setLimit(200).setDiscountPrice(70))));
+        RewardActivityDO rewardActivity02 = randomPojo(RewardActivityDO.class, o -> o.setId(2000L).setName("活动 2000 号")
+                .setSpuIds(singletonList(30L)).setConditionType(PromotionConditionTypeEnum.COUNT.getType())
+                .setRules(asList(new RewardActivityDO.Rule().setLimit(1).setDiscountPrice(10),
+                        new RewardActivityDO.Rule().setLimit(2).setDiscountPrice(60), // 最大可满足，因为是 4 个
+                        new RewardActivityDO.Rule().setLimit(10).setDiscountPrice(100))));
+        Map<RewardActivityDO, Set<Long>> matchRewardActivities = new LinkedHashMap<>();
+        matchRewardActivities.put(rewardActivity01, asSet(1L, 2L));
+        matchRewardActivities.put(rewardActivity02, asSet(3L));
+        when(rewardService.getMatchRewardActivities(eq(asSet(1L, 2L, 3L)))).thenReturn(matchRewardActivities);
+
+        // 调用
+        PriceCalculateRespDTO priceCalculate = priceService.calculatePrice(calculateReqDTO);
+        // 断言 Order 部分
+        PriceCalculateRespDTO.Order order = priceCalculate.getOrder();
+        assertEquals(order.getOriginalPrice(), 470);
+        assertEquals(order.getDiscountPrice(), 130);
+        assertEquals(order.getPointPrice(), 0);
+        assertEquals(order.getDeliveryPrice(), 0);
+        assertEquals(order.getPayPrice(), 340);
+        assertNull(order.getCouponId());
+        // 断言 OrderItem 部分
+        assertEquals(order.getItems().size(), 3);
+        PriceCalculateRespDTO.OrderItem orderItem01 = order.getItems().get(0);
+        assertEquals(orderItem01.getSkuId(), 10L);
+        assertEquals(orderItem01.getCount(), 2);
+        assertEquals(orderItem01.getOriginalPrice(), 200);
+        assertEquals(orderItem01.getOriginalUnitPrice(), 100);
+        assertEquals(orderItem01.getDiscountPrice(), 0);
+        assertEquals(orderItem01.getPayPrice(), 200);
+        assertEquals(orderItem01.getOrderPartPrice(), 40);
+        assertEquals(orderItem01.getOrderDividePrice(), 160);
+        PriceCalculateRespDTO.OrderItem orderItem02 = order.getItems().get(1);
+        assertEquals(orderItem02.getSkuId(), 20L);
+        assertEquals(orderItem02.getCount(), 3);
+        assertEquals(orderItem02.getOriginalPrice(), 150);
+        assertEquals(orderItem02.getOriginalUnitPrice(), 50);
+        assertEquals(orderItem02.getDiscountPrice(), 0);
+        assertEquals(orderItem02.getPayPrice(), 150);
+        assertEquals(orderItem02.getOrderPartPrice(), 30);
+        assertEquals(orderItem02.getOrderDividePrice(), 120);
+        PriceCalculateRespDTO.OrderItem orderItem03 = order.getItems().get(2);
+        assertEquals(orderItem03.getSkuId(), 30L);
+        assertEquals(orderItem03.getCount(), 4);
+        assertEquals(orderItem03.getOriginalPrice(), 120);
+        assertEquals(orderItem03.getOriginalUnitPrice(), 30);
+        assertEquals(orderItem03.getDiscountPrice(), 0);
+        assertEquals(orderItem03.getPayPrice(), 120);
+        assertEquals(orderItem03.getOrderPartPrice(), 60);
+        assertEquals(orderItem03.getOrderDividePrice(), 60);
+        // 断言 Promotion 部分（第一个）
+        assertEquals(priceCalculate.getPromotions().size(), 2);
+        PriceCalculateRespDTO.Promotion promotion01 = priceCalculate.getPromotions().get(0);
+        assertEquals(promotion01.getId(), 1000L);
+        assertEquals(promotion01.getName(), "活动 1000 号");
+        assertEquals(promotion01.getType(), PromotionTypeEnum.REWARD_ACTIVITY.getType());
+        assertEquals(promotion01.getLevel(), PromotionLevelEnum.ORDER.getLevel());
+        assertEquals(promotion01.getOriginalPrice(), 350);
+        assertEquals(promotion01.getDiscountPrice(), 70);
+        assertTrue(promotion01.getMeet());
+        assertEquals(promotion01.getMeetTip(), "满减送：省 0.70 元");
+        assertEquals(promotion01.getItems().size(), 2);
+        PriceCalculateRespDTO.PromotionItem promotionItem011 = promotion01.getItems().get(0);
+        assertEquals(promotionItem011.getSkuId(), 10L);
+        assertEquals(promotionItem011.getOriginalPrice(), 200);
+        assertEquals(promotionItem011.getDiscountPrice(), 40);
+        PriceCalculateRespDTO.PromotionItem promotionItem012 = promotion01.getItems().get(1);
+        assertEquals(promotionItem012.getSkuId(), 20L);
+        assertEquals(promotionItem012.getOriginalPrice(), 150);
+        assertEquals(promotionItem012.getDiscountPrice(), 30);
+        // 断言 Promotion 部分（第二个）
+        PriceCalculateRespDTO.Promotion promotion02 = priceCalculate.getPromotions().get(1);
+        assertEquals(promotion02.getId(), 2000L);
+        assertEquals(promotion02.getName(), "活动 2000 号");
+        assertEquals(promotion02.getType(), PromotionTypeEnum.REWARD_ACTIVITY.getType());
+        assertEquals(promotion02.getLevel(), PromotionLevelEnum.ORDER.getLevel());
+        assertEquals(promotion02.getOriginalPrice(), 120);
+        assertEquals(promotion02.getDiscountPrice(), 60);
+        assertTrue(promotion02.getMeet());
+        assertEquals(promotion02.getMeetTip(), "满减送：省 0.60 元");
+        PriceCalculateRespDTO.PromotionItem promotionItem02 = promotion02.getItems().get(0);
+        assertEquals(promotion02.getItems().size(), 1);
+        assertEquals(promotionItem02.getSkuId(), 30L);
+        assertEquals(promotionItem02.getOriginalPrice(), 120);
+        assertEquals(promotionItem02.getDiscountPrice(), 60);
+    }
+
+    /**
+     * 测试满减送活动，不匹配的情况
+     */
+    @Test
+    public void testCalculatePrice_rewardActivityNotMeet() {
+        // 准备参数
+        PriceCalculateReqDTO calculateReqDTO = new PriceCalculateReqDTO().setUserId(randomLongId())
+                .setItems(asList(new PriceCalculateReqDTO.Item().setSkuId(10L).setCount(2),
+                        new PriceCalculateReqDTO.Item().setSkuId(20L).setCount(3)));
+        // mock 方法(商品 SKU 信息)
+        ProductSkuRespDTO productSku01 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(10L).setPrice(100).setSpuId(1L));
+        ProductSkuRespDTO productSku02 = randomPojo(ProductSkuRespDTO.class, o -> o.setId(20L).setPrice(50).setSpuId(2L));
+        when(productSkuApi.getSkuList(eq(asSet(10L, 20L)))).thenReturn(asList(productSku01, productSku02));
+        // mock 方法（限时折扣 DiscountActivity 信息）
+        RewardActivityDO rewardActivity01 = randomPojo(RewardActivityDO.class, o -> o.setId(1000L).setName("活动 1000 号")
+                .setSpuIds(asList(10L, 20L)).setConditionType(PromotionConditionTypeEnum.PRICE.getType())
+                .setRules(singletonList(new RewardActivityDO.Rule().setLimit(351).setDiscountPrice(70))));
+        Map<RewardActivityDO, Set<Long>> matchRewardActivities = new LinkedHashMap<>();
+        matchRewardActivities.put(rewardActivity01, asSet(1L, 2L));
+        when(rewardService.getMatchRewardActivities(eq(asSet(1L, 2L)))).thenReturn(matchRewardActivities);
+
+        // 调用
+        PriceCalculateRespDTO priceCalculate = priceService.calculatePrice(calculateReqDTO);
+        // 断言 Order 部分
+        PriceCalculateRespDTO.Order order = priceCalculate.getOrder();
+        assertEquals(order.getOriginalPrice(), 350);
+        assertEquals(order.getDiscountPrice(), 0);
+        assertEquals(order.getPointPrice(), 0);
+        assertEquals(order.getDeliveryPrice(), 0);
+        assertEquals(order.getPayPrice(), 350);
+        assertNull(order.getCouponId());
+        // 断言 OrderItem 部分
+        assertEquals(order.getItems().size(), 2);
+        PriceCalculateRespDTO.OrderItem orderItem01 = order.getItems().get(0);
+        assertEquals(orderItem01.getSkuId(), 10L);
+        assertEquals(orderItem01.getCount(), 2);
+        assertEquals(orderItem01.getOriginalPrice(), 200);
+        assertEquals(orderItem01.getOriginalUnitPrice(), 100);
+        assertEquals(orderItem01.getDiscountPrice(), 0);
+        assertEquals(orderItem01.getPayPrice(), 200);
+        assertEquals(orderItem01.getOrderPartPrice(), 0);
+        assertEquals(orderItem01.getOrderDividePrice(), 200);
+        PriceCalculateRespDTO.OrderItem orderItem02 = order.getItems().get(1);
+        assertEquals(orderItem02.getSkuId(), 20L);
+        assertEquals(orderItem02.getCount(), 3);
+        assertEquals(orderItem02.getOriginalPrice(), 150);
+        assertEquals(orderItem02.getOriginalUnitPrice(), 50);
+        assertEquals(orderItem02.getDiscountPrice(), 0);
+        assertEquals(orderItem02.getPayPrice(), 150);
+        assertEquals(orderItem02.getOrderPartPrice(), 0);
+        assertEquals(orderItem02.getOrderDividePrice(), 150);
+        // 断言 Promotion 部分
+        assertEquals(priceCalculate.getPromotions().size(), 1);
+        PriceCalculateRespDTO.Promotion promotion01 = priceCalculate.getPromotions().get(0);
+        assertEquals(promotion01.getId(), 1000L);
+        assertEquals(promotion01.getName(), "活动 1000 号");
+        assertEquals(promotion01.getType(), PromotionTypeEnum.REWARD_ACTIVITY.getType());
+        assertEquals(promotion01.getLevel(), PromotionLevelEnum.ORDER.getLevel());
+        assertEquals(promotion01.getOriginalPrice(), 350);
+        assertEquals(promotion01.getDiscountPrice(), 0);
+        assertFalse(promotion01.getMeet());
+        assertEquals(promotion01.getMeetTip(), "TODO"); // TODO 芋艿：后面再想想
+        assertEquals(promotion01.getItems().size(), 2);
+        PriceCalculateRespDTO.PromotionItem promotionItem011 = promotion01.getItems().get(0);
+        assertEquals(promotionItem011.getSkuId(), 10L);
+        assertEquals(promotionItem011.getOriginalPrice(), 200);
+        assertEquals(promotionItem011.getDiscountPrice(), 0);
+        PriceCalculateRespDTO.PromotionItem promotionItem012 = promotion01.getItems().get(1);
+        assertEquals(promotionItem012.getSkuId(), 20L);
+        assertEquals(promotionItem012.getOriginalPrice(), 150);
+        assertEquals(promotionItem012.getDiscountPrice(), 0);
+    }
+
 }