test: 이미지 Fixture 추가

#664

backend/emm-sale/src/test/java/com/emmsale/image/ImageFixture.java

@@ -0,0 +1,28 @@
+package com.emmsale.image;
+
+import com.emmsale.image.domain.Image;
+import com.emmsale.image.domain.ImageType;
+import java.time.LocalDateTime;
+
+public class ImageFixture {
+
+  public static Image 행사_이미지1(final Long eventId) {
+    return new Image(
+        "이미지1", ImageType.EVENT, eventId, 0, LocalDateTime.of(2023, 8, 15, 15, 0));
+  }
+
+  public static Image 행사_이미지2(final Long eventId) {
+    return new Image(
+        "이미지2", ImageType.EVENT, eventId, 1, LocalDateTime.of(2023, 8, 15, 15, 0));
+  }
+
+  public static Image 행사_이미지3(final Long eventId) {
+    return new Image(
+        "이미지3", ImageType.EVENT, eventId, 2, LocalDateTime.of(2023, 8, 15, 15, 0));
+  }
+
+  public static Image 행사_이미지4(final Long eventId) {
+    return new Image(
+        "이미지4", ImageType.EVENT, eventId, 3, LocalDateTime.of(2023, 8, 15, 15, 0));
+  }
+}