buildFile << """
            dependencies { testImplementation 'junit:junit:4.13' }
        """

        file("src/test/java/ThingTest.java") << """
            import org.junit.Test;
            import static org.junit.Assert.*;

            public class ThingTest {
                @Test
                public void verify() {
                    assertTrue(System.getProperty("java.version").startsWith("${version}"));

                    r.run();
                }
            }
        """

        def testFile = file("src/test/java/ThingTest.java")
        testFile << """
            import org.junit.Test;
            import org.junit.Assert;
            import java.io.File;

            public class ThingTest {
                @Test
                public void check() {

            }
        """
        file("src/main/groovy/Thing.groovy") << """
            class Thing {}
        """
        file("src/test/groovy/ThingTest.groovy") << """
            import org.junit.*
            class ThingTest {
                @Test void ok() { new Thing() }
            }
        """

        and:
        def expectedTasks = [

    }
}
"""
        subprojects.each { subproject ->
            settingsFile << "include '$subproject'\n"
            file("${subproject}/src/test/java/ThingTest.java") << """
import org.junit.Test;
import static org.junit.Assert.*;

public class ThingTest {
    @Test
    public void verify() {
        assertTrue(System.getProperty("java.version").startsWith("${version}."));
    }
}
"""
        }
    }