cacheLayout.getPath(new File('some/dir')) == new File('some/dir/files-2.1')
    }

    def "use metadata store layout"() {
        when:
        CacheLayout cacheLayout = CacheLayout.META_DATA

        then:
        // If you change the value here, update the docs in dependency_resolution.adoc#sub:cache_copy
        def expectedVersion = 106
        cacheLayout.name == 'metadata'

import java.io.File;
import java.util.List;

public class DefaultArtifactCacheMetadata implements ArtifactCacheMetadata, GlobalCache {

    public static final CacheVersion CACHE_LAYOUT_VERSION = CacheLayout.META_DATA.getVersion();
    private final File cacheDir;
    private final File baseDir;

    public DefaultArtifactCacheMetadata(GlobalScopedCacheBuilderFactory cacheBuilderFactory) {

        oldMetadataDir = userHomeCacheDir.file(CacheLayout.MODULES.key).createDir("${CacheLayout.META_DATA.name}-2.56")
        currentModulesDir = userHomeCacheDir.file(CacheLayout.MODULES.key).createDir()
        currentModulesMetadataDir = currentModulesDir.file(CacheLayout.META_DATA.key).createDir()
        gcFile.createFile()
    }

                .add(cacheMetaData.getMetaDataStoreDirectory().getParentFile(),
                    UnusedVersionsCacheCleanup.create(CacheLayout.META_DATA.getName(), CacheLayout.META_DATA.getVersionMapping(), usedGradleVersions))
                // Cleanup old unused 'transforms-X' directories too. Transforms are now cached in 'caches/<gradle-version>/transforms'.

        when:
        def metaData = new DefaultArtifactCacheMetadata(cache)
        File metadataStore = metaData.getMetaDataStoreDirectory()

        then:
        metadataStore == new File(testCacheDir, CacheLayout.META_DATA.key + '/descriptors')
    }

    def resourcesDir = cacheDir.createDir(CacheLayout.RESOURCES.key)
    def filesDir = cacheDir.createDir(CacheLayout.FILE_STORE.key)
    def metaDataDir = cacheDir.createDir(CacheLayout.META_DATA.key)
    def artifactCacheMetadata = Stub(ArtifactCacheMetadata) {
        getCacheDir() >> cacheDir
        getExternalResourcesStoreDirectory() >> resourcesDir
        getFileStoreDirectory() >> filesDir

            dependencies {
                implementation 'org.readonly:core:+'
            }
        """

        when:
        fileInReadReadOnlyCache("modules-${CacheLayout.MODULES.version}/metadata-${CacheLayout.META_DATA.version}/${file}.bin").bytes = [0, 0, 0]
        withReadOnlyCache()

        core.allowAll()
        core.rootMetaData.allowGetOrHead()
        util.allowAll()

        if (resolveDynamic) {

    // If you update FILE_STORE, you may also need to update LocallyAvailableResourceFinderFactory
    FILE_STORE(MODULES, "files", introducedIn("1.9-rc-1")),

    META_DATA(MODULES, "metadata",
        // skipped versions were not used in a release
        introducedIn("1.9-rc-2")
        .changedTo(2, "1.11-rc-1")
        .changedTo(6, "1.12-rc-1")
        .changedTo(12, "2.0-rc-1")

    }

    @Override
    public <K, V> IndexedCache<K, V> createCache(String cacheName, Serializer<K> keySerializer, Serializer<V> valueSerializer) {
        String cacheFileInMetaDataStore = CacheLayout.META_DATA.getKey() + "/" + cacheName;
        IndexedCacheParameters<K, V> parameters = IndexedCacheParameters.of(cacheFileInMetaDataStore, keySerializer, valueSerializer);
        if (cache.indexedCacheExists(parameters)) {

        return isSameOrNewer("5.6-rc-1");
    }

    @Override
    CacheVersion getArtifactCacheLayoutVersion() {
        if (isSameOrNewer("1.9-rc-2")) {
            return CacheLayout.META_DATA.getVersionMapping().getVersionUsedBy(this.version).get();
        } else if (isSameOrNewer("1.9-rc-1")) {
            return CacheVersion.parse("1.31");
        } else if (isSameOrNewer("1.7-rc-1")) {