dependencies 추가 JUnit5 testImplementation("org.junit.jupiter:junit-jupiter:5.5.2") testImplementation("org.jetbrains.kotlin:kotlin-test-junit5:1.3.50") AssertJ testImplementation("org.assertj:assertj-core:3.13.2") Test 를 위한 Task 추가 tasks.withType { useJUnitPlatform() } junit4, hamcrest 의존성 제거 testImplementation("org.springframework.boot:spring-boot-starter-test") { exclude(module = "junit") excl..