import org.gradle.testfixtures.internal.ProjectBuilderImpl

class ToolingApiDistributionResolver {

    static interface ResolverAction<T> {
        T run(ToolingApiDistributionResolver resolver)
    }

    /**
     * Executes given {@code block} against a fresh instance of the {@code ToolingApiDistributionResolver}
     * and returns the result.
     */
    static <T> T use(ResolverAction<T> block) {

import org.gradle.integtests.tooling.fixture.ToolingApiDistributionResolver

class ToolingApiClasspathIntegrationTest extends AbstractIntegrationSpec {

    def "tooling api classpath contains only tooling-api jar and slf4j"() {
        when:
        ToolingApiDistribution resolve = ToolingApiDistributionResolver.use {
            it.withDefaultRepository().withExternalToolingApiDistribution()

        if (toolingApi == null) {
            toolingApi = ToolingApiDistributionResolver.use(new ToolingApiDistributionResolver.ResolverAction<ToolingApiDistribution>() {
                @Override
                public ToolingApiDistribution run(ToolingApiDistributionResolver resolver) {
                    return resolver.withDefaultRepository().resolve(versionToTestAgainst);
                }