test(#151): 테스트 수정 및 추가

- 원서 상태가 반려되면 초안 제출부터 다시할 수 있는지 테스트 코드를 작성했어요.
- 기존의 재제출 에러 테스트를 반려상태가 아니면서 이미 원서가 존재할 때 예외가 발생하도록 변경했어요.

src/test/java/com/bamdoliro/maru/application/form/SubmitFormUseCaseTest.java

@@ -16,6 +16,8 @@
 import org.mockito.Mock;
 import org.mockito.junit.jupiter.MockitoExtension;
 
+import java.util.Optional;
+
 import static org.junit.jupiter.api.Assertions.assertThrows;
 import static org.mockito.ArgumentMatchers.any;
 import static org.mockito.BDDMockito.given;
@@ -61,19 +63,44 @@ class SubmitFormUseCaseTest {
     }
 
     @Test
-    void 원서를_제출할_때_이미_제출한_원서가_있으면_에러가_발생한다() {
+    void 원서를_제출할_때_이미_제출한_원서가_반려상태가_아니면서_있으면_에러가_발생한다() {
         // given
         SubmitFormRequest request = FormFixture.createFormRequest(FormType.REGULAR);
         User user = UserFixture.createUser();
+        Form form = FormFixture.createForm(FormType.REGULAR);
 
         given(formRepository.existsByUserId(user.getId())).willReturn(true);
+        given(formRepository.findByUser(user)).willReturn(Optional.of(form));
 
         // when and then
         assertThrows(FormAlreadySubmittedException.class, () -> submitFormUseCase.execute(user, request));
 
         verify(formRepository, times(1)).existsByUserId(user.getId());
         verify(calculateFormScoreService, never()).execute(any(Form.class));
         verify(assignExaminationNumberService, never()).execute(any(Form.class));
+        verify(formRepository, never()).deleteByUser(any(User.class));
         verify(formRepository, never()).save(any(Form.class));
     }
+
+    @Test
+    void 원서를_제출할_때_이미_제출한_원서가_반려상태면_다시_작성한다() {
+        //given
+        SubmitFormRequest request = FormFixture.createFormRequest(FormType.REGULAR);
+        User user = UserFixture.createUser();
+        Form form = FormFixture.createForm(FormType.REGULAR);
+        form.reject();
+
+        given(formRepository.existsByUserId(user.getId())).willReturn(true);
+        given(formRepository.findByUser(user)).willReturn(Optional.of(form));
+
+        //when
+        submitFormUseCase.execute(user, request);
+
+        //then
+        verify(formRepository, times(1)).existsByUserId(user.getId());
+        verify(calculateFormScoreService, times(1)).execute(any(Form.class));
+        verify(assignExaminationNumberService, times(1)).execute(any(Form.class));
+        verify(formRepository, times(1)).deleteByUser(any(User.class));
+        verify(formRepository, times(1)).save(any(Form.class));
+    }
 }