private final CacheFactory cacheFactory = Mock()
    private final PersistentCache cache = Mock()
    private final DefaultCacheBuilder builder = new DefaultCacheBuilder(cacheFactory, sharedCacheDir)

    void createsGlobalDirectoryBackedCache() {
        when:
        def result = builder.open()

        then:
        result == cache
        1 * cacheFactory.open(sharedCacheDir, null, [:], mode(Shared), _, NO_CLEANUP) >> cache