Bálint Hegyi <******@****.***> 1695636814 +0200

  val testEngine = buildTestEngine()
  val filters = listOf<PostDiscoveryFilter>()
  val discoveryOrchestrator = EngineDiscoveryOrchestrator(listOf(testEngine), filters)
  val discovered = discoveryOrchestrator.discover(request, EngineDiscoveryOrchestrator.Phase.EXECUTION)

  return discovered.getEngineTestDescriptor(testEngine).descendants.toList()
}

/**

            }
        """
        file('src/test/java/EngineFailingDiscovery.java') << '''
            import org.junit.platform.engine.*;
            public class EngineFailingDiscovery implements TestEngine {
                @Override
                public String getId() {
                    return "EngineFailingDiscovery";
                }

                @Override

import org.junit.platform.engine.EngineDiscoveryRequest;
import org.junit.platform.engine.ExecutionRequest;
import org.junit.platform.engine.TestDescriptor;
import org.junit.platform.engine.TestEngine;
import org.junit.platform.engine.UniqueId;
import org.junit.platform.engine.discovery.ClassSelector;
import org.junit.platform.engine.discovery.DiscoverySelectors;
import org.junit.platform.engine.discovery.UniqueIdSelector;

            }
        """

        when:
        executer.withStackTraceChecksDisabled()
        fails "test"

        then:
        output.contains("org.junit.platform.commons.JUnitException: No TestEngine ID matched the following include EngineFilters: [does-not-exist]")
    }

JUnit Platform allows you to use different test engines. JUnit currently provides two `TestEngine` implementations out of the box:
https://junit.org/junit5/docs/current/api/org.junit.jupiter.engine/module-summary.html[junit-jupiter-engine] and https://junit.org/junit5/docs/current/api/org.junit.vintage.engine/module-summary.html[junit-vintage-engine].