test(AvailableDatesTest): 중복로직 검증 테스트

backend/src/test/java/com/woowacourse/momo/domain/availabledate/AvailableDatesTest.java

@@ -0,0 +1,44 @@
+package com.woowacourse.momo.domain.availabledate;
+
+import static org.assertj.core.api.Assertions.assertThatCode;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+
+import com.woowacourse.momo.domain.meeting.Meeting;
+import com.woowacourse.momo.exception.MomoException;
+import com.woowacourse.momo.exception.code.AvailableDateErrorCode;
+import com.woowacourse.momo.fixture.MeetingFixture;
+import java.time.LocalDate;
+import java.util.List;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+
+class AvailableDatesTest {
+
+    @DisplayName("가능한 시간의 값이 중복이면 예외가 발생한다.")
+    @Test
+    void throwExceptionWhenDuplicatedDate() {
+        // given
+        Meeting meeting = MeetingFixture.GAME.create();
+        LocalDate date = LocalDate.of(2024, 7, 24);
+        List<LocalDate> dates = List.of(date, date);
+
+        // when then
+        assertThatThrownBy(() -> new AvailableDates(dates, meeting))
+                .isInstanceOf(MomoException.class)
+                .hasMessage(AvailableDateErrorCode.DUPLICATED_DATE.message());
+    }
+
+    @DisplayName("가능한 시간이 중복이 아니면 예외가 발생하지 않는다.")
+    @Test
+    void createAvailableDates() {
+        // given
+        Meeting meeting = MeetingFixture.GAME.create();
+        LocalDate date1 = LocalDate.of(2024, 7, 24);
+        LocalDate date2 = LocalDate.of(2024, 8, 25);
+        List<LocalDate> dates = List.of(date1, date2);
+
+        // when then
+        assertThatCode(() -> new AvailableDates(dates, meeting))
+                .doesNotThrowAnyException();
+    }
+}