when:
        classLoader.loadClass(Test.class.name)

        then:
        ClassNotFoundException e2 = thrown()
        e2.message == "$Test.name not found."
    }

    void filtersPackagesByDefault() {
        given:
        assert classLoader.parent.getPackage('org.junit') != null

        expect:
        cannotSeePackage('org.junit')
    }

    @Requires(UnitTestPreconditions.Jdk9OrLater)