feat: 경매의 마지막 입찰을 조회하는 기능 추가

woowacourse-teams · Nov 22, 2023 · 25c0e46 · 25c0e46
1 parent 04c26bb
commit 25c0e46
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Showing 2 changed files with 47 additions and 5 deletions.
diff --git a/backend/ddang/src/main/java/com/ddang/ddang/auction/domain/Auction.java b/backend/ddang/src/main/java/com/ddang/ddang/auction/domain/Auction.java
@@ -191,4 +191,8 @@ public Optional<User> findLastBidder() {
 
         return Optional.of(lastBid.getBidder());
     }
+
+    public Optional<Bid> findLastBid() {
+        return Optional.ofNullable(lastBid);
+    }
 }
diff --git a/backend/ddang/src/test/java/com/ddang/ddang/auction/domain/AuctionTest.java b/backend/ddang/src/test/java/com/ddang/ddang/auction/domain/AuctionTest.java
@@ -1,18 +1,19 @@
 package com.ddang.ddang.auction.domain;
 
-import static org.assertj.core.api.Assertions.assertThat;
-
 import com.ddang.ddang.auction.domain.fixture.AuctionFixture;
 import com.ddang.ddang.bid.domain.Bid;
 import com.ddang.ddang.user.domain.User;
-import java.time.LocalDateTime;
-import java.util.List;
-import java.util.Optional;
 import org.assertj.core.api.SoftAssertions;
 import org.junit.jupiter.api.DisplayNameGeneration;
 import org.junit.jupiter.api.DisplayNameGenerator;
 import org.junit.jupiter.api.Test;
 
+import java.time.LocalDateTime;
+import java.util.List;
+import java.util.Optional;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
 @DisplayNameGeneration(DisplayNameGenerator.ReplaceUnderscores.class)
 @SuppressWarnings("NonAsciiCharacters")
 class AuctionTest extends AuctionFixture {
@@ -352,6 +353,43 @@ class AuctionTest extends AuctionFixture {
         assertThat(actual).isEmpty();
     }
 
+    @Test
+    void 마지막_입찰을_반환한다() {
+        // given
+        final Auction auction = Auction.builder()
+                                       .title("제목")
+                                       .seller(판매자)
+                                       .closingTime(LocalDateTime.now().minusDays(3L))
+                                       .startPrice(new Price(1_000))
+                                       .bidUnit(new BidUnit(1_000))
+                                       .build();
+        final Bid bid = new Bid(auction, 구매자, 유효한_입찰_금액);
+
+        auction.updateLastBid(bid);
+
+        // when
+        final Optional<Bid> actual = auction.findLastBid();
+
+        // then
+        assertThat(actual).contains(bid);
+    }
+
+    @Test
+    void 마지막_입찰이_없다면_빈_Optional을_반환한다() {
+        // given
+        final Auction auction = Auction.builder()
+                                       .title("제목")
+                                       .seller(판매자)
+                                       .closingTime(LocalDateTime.now().minusDays(3L))
+                                       .build();
+
+        // when
+        final Optional<Bid> actual = auction.findLastBid();
+
+        // then
+        assertThat(actual).isEmpty();
+    }
+
     @Test
     void 경매를_진행중이며_입찰자가_없는_경우_UNBIDDEN을_반환한다() {
         // given