// and add dependencies automatically.
            getTestToolchain().convention(toolchainFactory.getOrCreate(LegacyJUnit4TestToolchain.class));
        } else {
            JvmTestToolchain<? extends JUnitJupiterToolchainParameters> toolchain = toolchainFactory.getOrCreate(JUnitJupiterTestToolchain.class);
            getTestToolchain().convention(toolchain);

        given:
        buildFile << """
            plugins {
                id 'java'
            }

            def first = testing.suites.test.getTestToolchain()
            def second = testing.suites.test.getTestToolchain()

            tasks.register('assertSameFrameworkInstance') {
                doLast {
                    assert first.getOrNull() === second.getOrNull()
                }