def buildOp = operations.only("Clean up ${getBuildCacheName()} ($cacheDir)")
        buildOp.details.cacheLocation == cacheDir
        assert gcFile().lastModified() > lastCleanupCheck
    }

    void assertCacheWasNotCleanedUpSince(long lastCleanupCheck) {
        operations.none("Clean up ${getBuildCacheName()} ($cacheDir)")
        assert gcFile().lastModified() == lastCleanupCheck
    }

import org.gradle.integtests.fixtures.AbstractIntegrationSpec

import java.nio.file.Files

class DirectoryBuildCacheCleanupIntegrationTest extends AbstractBuildCacheCleanupIntegrationTest {
    @Override
    String getBuildCacheName() {
        return "Build cache"
    }

    @Override
    void createBuildCacheEntry(String key, File value, long timestamp) {
        File cacheFile = cacheDir.file(key)