[SpringBoot]テスト実行時に「java.lang.NoSuchMethodError: ‘java.util.Set org.junit.platform.engine.TestDescriptor.getAncestors()’」のエラー

事象

EclipseにてSpringBootのテスト実行時に以下のエラーが発生する。

エラー内容

java.lang.NoSuchMethodError: 'java.util.Set org.junit.platform.engine.TestDescriptor.getAncestors()'
    at org.junit.platform.launcher.core.StackTracePruningEngineExecutionListener.getTestClassNames(StackTracePruningEngineExecutionListener.java:50)
    at org.junit.platform.launcher.core.StackTracePruningEngineExecutionListener.executionFinished(StackTracePruningEngineExecutionListener.java:39)
    at org.junit.platform.launcher.core.DelegatingEngineExecutionListener.executionFinished(DelegatingEngineExecutionListener.java:46)
    at org.junit.platform.launcher.core.OutcomeDelayingEngineExecutionListener.reportEngineFailure(OutcomeDelayingEngineExecutionListener.java:83)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:203)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:169)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:93)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:58)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:141)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:57)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:103)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:94)
    at org.junit.platform.launcher.core.DelegatingLauncher.execute(DelegatingLauncher.java:52)
    at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:70)
    at org.eclipse.jdt.internal.junit5.runner.JUnit5TestReference.run(JUnit5TestReference.java:98)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:40)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:529)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:756)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:452)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:210)

環境

• SpringBoot 2.7.x
• Java 11
• JUnit 5
• Gradle 8.3
• eclipse 2022

原因

このエラーはGradleのEclipseへの統合 (Buildship) の箇所が原因で発生します。junit-platform-launcherの依存関係（クラスパス）が正しく設定されていないため、テスト実行時にエラーが発生します。

解決策

build.gradleにjunit-platform-launcherの依存関係を追加する。

build.gradle

testRuntimeOnly 'org.junit.platform:junit-platform-launcher'

参考

https://github.com/eclipse/buildship/issues/1265

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