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thezz9 merged 2 commits into from
Jun 20, 2025
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test : LanguageService, LanguageDomainService 테스트 코드 작성 #81

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test : LanguageService, LanguageDomainService 테스트 코드 작성
thezz9 Jun 20, 2025
137a0f6
Update LanguageDomainServiceTest.java
thezz9 Jun 20, 2025
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219 changes: 219 additions & 0 deletions src/test/java/org/ezcode/codetest/application/language/service/LanguageServiceTest.java
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package org.ezcode.codetest.application.language.service;

import static org.assertj.core.api.Assertions.*;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.BDDMockito.*;

import java.util.List;

import org.ezcode.codetest.application.submission.dto.request.language.LanguageCreateRequest;
import org.ezcode.codetest.application.submission.dto.request.language.LanguageUpdateRequest;
import org.ezcode.codetest.application.submission.dto.response.language.LanguageResponse;
import org.ezcode.codetest.application.submission.service.LanguageService;
import org.ezcode.codetest.domain.language.exception.LanguageException;
import org.ezcode.codetest.domain.language.exception.code.LanguageExceptionCode;
import org.ezcode.codetest.domain.language.model.entity.Language;
import org.ezcode.codetest.domain.language.service.LanguageDomainService;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.DisplayName;
import org.junit.jupiter.api.Nested;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.springframework.test.util.ReflectionTestUtils;

@ExtendWith(MockitoExtension.class)
@DisplayName("언어 서비스 테스트")
public class LanguageServiceTest {

@InjectMocks
private LanguageService languageService;

@Mock
private LanguageDomainService languageDomainService;

private Long languageId;
private Language language;
private LanguageCreateRequest createRequest;
private LanguageUpdateRequest updateRequest;

@BeforeEach
void setUp() {
languageId = 1L;

language = new Language("Java", "17", 62L);
ReflectionTestUtils.setField(language, "id", 1L);

createRequest = new LanguageCreateRequest("Java", "17", 62L);
updateRequest = new LanguageUpdateRequest(100L);
}

@Nested
@DisplayName("언어 서비스 성공 테스트")
class LanguageServiceSuccessTest {

@Test
@DisplayName("언어 생성 성공")
void createLanguage() {

// given
willDoNothing().given(languageDomainService)
.validateLanguageNotDuplicated(createRequest.name(), createRequest.version());

given(languageDomainService.createLanguage(any(Language.class)))
.willReturn(language);

// when
LanguageResponse response = languageService.createLanguage(createRequest);

// then
assertAll(
() -> assertThat(response.id()).isEqualTo(language.getId()),
() -> assertThat(response.name()).isEqualTo(language.getName()),
() -> assertThat(response.version()).isEqualTo(language.getVersion()),
() -> assertThat(response.judge0Id()).isEqualTo(language.getJudge0Id())
);

then(languageDomainService).should(times(1))
.validateLanguageNotDuplicated(createRequest.name(), createRequest.version());
then(languageDomainService).should(times(1)).createLanguage(any(Language.class));
}

@Test
@DisplayName("언어 조회 성공")
void getLanguages() {

// given
given(languageDomainService.getLanguages()).willReturn(List.of(language));

// when
List<LanguageResponse> responses = languageService.getLanguages();

// then
LanguageResponse response = responses.get(0);

assertAll(
() -> assertThat(responses).hasSize(1),
() -> assertThat(response.id()).isEqualTo(language.getId()),
() -> assertThat(response.name()).isEqualTo(language.getName()),
() -> assertThat(response.version()).isEqualTo(language.getVersion()),
() -> assertThat(response.judge0Id()).isEqualTo(language.getJudge0Id())
);

then(languageDomainService).should(times(1)).getLanguages();
}

@Test
@DisplayName("언어 수정 성공")
void modifyLanguage() {

// given
Long newJudge0Id = updateRequest.judge0Id();

given(languageDomainService.getLanguage(languageId)).willReturn(language);
willAnswer(invocationOnMock -> {
Language langArg = invocationOnMock.getArgument(0);
Long idArg = invocationOnMock.getArgument(1);
ReflectionTestUtils.setField(langArg, "judge0Id", idArg);
return null;
}).given(languageDomainService).modifyLanguage(language, newJudge0Id);

// when
LanguageResponse response = languageService.modifyLanguage(languageId, updateRequest);

// then
assertAll(
() -> assertThat(response.id()).isEqualTo(language.getId()),
() -> assertThat(response.name()).isEqualTo(language.getName()),
() -> assertThat(response.version()).isEqualTo(language.getVersion()),
() -> assertThat(response.judge0Id()).isEqualTo(newJudge0Id)
);

then(languageDomainService).should(times(1)).getLanguage(languageId);
then(languageDomainService).should(times(1)).modifyLanguage(language, newJudge0Id);
}

@Test
@DisplayName("언어 삭제 성공")
void removeLanguage() {

// given
willDoNothing().given(languageDomainService).validateLanguageExists(languageId);
willDoNothing().given(languageDomainService).removeLanguage(languageId);

// when
languageService.removeLanguage(languageId);

// then
then(languageDomainService).should(times(1)).validateLanguageExists(languageId);
then(languageDomainService).should(times(1)).removeLanguage(languageId);
}
}

@Nested
@DisplayName("언어 서비스 실패 테스트")
class LanguageServiceFailureTest {

@Test
@DisplayName("언어 등록: 중복 등록 시 예외 발생")
void createLanguage_Duplicate() {

// given
String name = createRequest.name();
String version = createRequest.version();

willThrow(new LanguageException(LanguageExceptionCode.LANGUAGE_ALREADY_EXISTS))
.given(languageDomainService)
.validateLanguageNotDuplicated(name, version);

// when & then
assertThatThrownBy(() -> languageService.createLanguage(createRequest))
.isInstanceOf(LanguageException.class)
.hasMessage(LanguageExceptionCode.LANGUAGE_ALREADY_EXISTS.getMessage());

then(languageDomainService)
.should(times(1)).validateLanguageNotDuplicated(name, version);
then(languageDomainService).should(never()).createLanguage(any(Language.class));
}

@Test
@DisplayName("언어 수정: 존재하지 않으면 예외 발생")
void modifyLanguage_NotFound() {

// given

willThrow(new LanguageException(LanguageExceptionCode.LANGUAGE_NOT_FOUND))
.given(languageDomainService)
.getLanguage(languageId);

// when & then
assertThatThrownBy(() -> languageService.modifyLanguage(languageId, updateRequest))
.isInstanceOf(LanguageException.class)
.hasMessage(LanguageExceptionCode.LANGUAGE_NOT_FOUND.getMessage());

then(languageDomainService).should(times(1)).getLanguage(languageId);
then(languageDomainService).should(never()).modifyLanguage(any(Language.class), any(Long.class));
}

@Test
@DisplayName("언어 삭제: 존재하지 않으면 예외 발생")
void removeLanguage_NotFound() {

// given

willThrow(new LanguageException(LanguageExceptionCode.LANGUAGE_NOT_FOUND))
.given(languageDomainService)
.validateLanguageExists(languageId);

// when & then
assertThatThrownBy(() -> languageService.removeLanguage(languageId))
.isInstanceOf(LanguageException.class)
.hasMessage(LanguageExceptionCode.LANGUAGE_NOT_FOUND.getMessage());

then(languageDomainService).should(times(1)).validateLanguageExists(languageId);
then(languageDomainService).should(never()).removeLanguage(languageId);
}
}
}
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