feat: 도메인 모듈 테스트 격리 추가 (Web을 사용하지 못해 Transactional 설정)

backend/pcloud-domain/src/test/java/com/domain/helper/IntegrationHelper.java

@@ -0,0 +1,39 @@
+package com.domain.helper;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.test.context.support.AbstractTestExecutionListener;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.util.List;
+
+@Transactional
+@SpringBootTest
+public class IntegrationHelper extends AbstractTestExecutionListener {
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+
+    @BeforeEach
+    void init() {
+        validateH2Database();
+        List<String> truncateAllTablesQuery = jdbcTemplate.queryForList("SELECT CONCAT('TRUNCATE TABLE ', TABLE_NAME, ';') AS q FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_SCHEMA = 'PUBLIC'", String.class);
+        truncateAllTables(truncateAllTablesQuery);
+    }
+
+    private void validateH2Database() {
+        jdbcTemplate.queryForObject("SELECT H2VERSION() FROM DUAL", String.class);
+    }
+
+    private void truncateAllTables(List<String> truncateAllTablesQuery) {
+        jdbcTemplate.execute("SET FOREIGN_KEY_CHECKS = 0");
+
+        for (String truncateQuery : truncateAllTablesQuery) {
+            jdbcTemplate.execute(truncateQuery);
+        }
+
+        jdbcTemplate.execute("SET FOREIGN_KEY_CHECKS = 1");
+    }
+}