テストのフレイキーさを簡単に確認するためにレポートツールAllureを利用する

plugins {
 ・・・
 id 'io.qameta.allure' version '2.11.2'
}
def allureVersion = "2.21.0"
・・・
allure {
   autoconfigure = true
   aspectjweaver = true
   version = allureVersion

   useJUnit5 {
       version = allureVersion
   }
}

backend-build-and-test:
  stage: build
  ・・・
  artifacts: # レポーティング用データを後続ジョブに引き渡すためのジョブの成果物設定
    when: always
    expire_in: 3 days  
    paths:
      - back/build/allure-results

pages:
  stage: verify
  image: gradle:7.6-jdk11
  dependencies:
    - backend-build-and-test
  before_script: 
    - cd back
    - echo "generate report and backup history..."
    # gradle pluginを利用してbackend-build-and-testジョブの成果物として引き継いだデータ、及びキャッシュ保持したhistoryからレポート生成
    - ./gradlew allureReport 
    # allure-reportに出力されたhistoryデータをGitlabのキャッシュとして保持するために上書き
    - cp -rf build/reports/allure-report/allureReport/history/* build/allure-results/history
    - cd ../
  script: 
    - echo "prepare reports for Gitlab Pages"
    # 生成したレポートファイルをGitlab Pagesを利用した公開対象パスに移動
    - mkdir -p .public
    - mv back/build/reports/allure-report/allureReport/* .public
    - mv .public public
  artifacts:
    paths:
      - public
  cache:
    paths:
      - back/.gradle/
      # 「前回までのhistory」をGitlab CIのキャッシュ機能を利用して保持  
      - back/build/allure-results/history/

public class GreetController implements GreetApi {

   private final GreetService greeter;
   @Autowired
   public GreetController(GreetService greeter) {
       this.greeter = greeter;
   }
 
   @Override
   public ResponseEntity<GreetMessage> getGreetIn(String lang) {
   	GreetMessage target = new GreetMessage();
   	target.setId(BigDecimal.ONE);
   	target.setContent(greeter.greetIn(lang));
   	return ResponseEntity.ok(target);
   }
 ・・・
}

@Service
public class GreetService {

 @Autowired
 MessageSource messages;

   public String greetIn(String lang) {
       int hour = LocalDateTime.now().getHour();
       String greetId;
       if (4 <= hour && hour < 11) {
           greetId = "greet.morning";
       } else if (11 <= hour && hour < 18) {
           greetId = "greet.default";
       } else {
           greetId = "greet.night";
       }
       return messages.getMessage(greetId, new String[]{}, new Locale(lang));
   }
}

@SpringBootTest
public class GreetServiceTest {
 @Autowired
 private GreetService target;
 
   @Test
   @DisplayName("通常のあいさつ")
   void testDefaultGreet() {
      String expectedEnglish = "Hello Microservice";
   	 String actual = target.greetIn("en");

    assertEquals(expectedEnglish, actual);
   }
}

@Service
public class GreetService {

 private final Clock clock;

 @Autowired
 public GreetService(Clock clock) {
   	this.clock = clock;
   }

   public String greetIn(String lang) {
       int hour = LocalDateTime.now(clock).getHour();
       ・・・
   }
}

@SpringBootTest
public class GreetServiceTest {
    private final GreetService target;

  @Autowired
    public GreetServiceTest(GreetService greetService) {
     this.target = greetService;
  }

  @MockBean
  Clock clock;

  @Test
    @DisplayName("通常のあいさつ")
    void testDefaultGreet() {
      when(clock.instant()).thenReturn(Instant.parse("2023-04-06T03:00:00Z"));
   	 when(clock.getZone()).thenReturn(ZoneId.of("Asia/Tokyo"));
    ・・・
   }
}