private static class AnException extends RuntimeException {}

    static FileAccess createOnDemandFileLock(File file) {
        new OnDemandFileAccess(file, "test", DefaultFileLockManagerTestHelper.createDefaultFileLockManager())
    }

    static void unlockUncleanly(File target) {
        def lock = createDefaultFileLock(target)
        try {
            lock.writeFile {
                throw new AnException()
            }

import org.gradle.test.fixtures.file.TestFile
import org.gradle.util.internal.GUtil

import java.util.function.Consumer

import static org.gradle.cache.internal.DefaultFileLockManagerTestHelper.createDefaultFileLockManager
import static org.gradle.cache.internal.DefaultFileLockManagerTestHelper.unlockUncleanly
import static org.gradle.cache.internal.filelock.DefaultLockOptions.mode

import org.gradle.test.fixtures.file.TestNameTestDirectoryProvider
import org.junit.Rule
import spock.lang.Specification

import static org.gradle.cache.internal.DefaultFileLockManagerTestHelper.createDefaultFileLockManager
import static org.gradle.cache.internal.DefaultFileLockManagerTestHelper.unlockUncleanly
import static org.gradle.internal.nativeintegration.services.NativeServices.NativeServicesMode

        access.updateFile { file << "2" }

        then:
        access.readFile { file.text } == "12"
    }

    FileLockManager createManager() {
        return DefaultFileLockManagerTestHelper.createDefaultFileLockManager()
    }

    FileAccess access(File file, FileLockManager manager = createManager()) {
        new OnDemandFileAccess(file, "some-lock", manager)
    }

            void initialize(FileLock fileLock) {}
        }
        def lockOptions = DefaultLockOptions.mode(FileLockManager.LockMode.Shared)
        def lockManager1 = DefaultFileLockManagerTestHelper.createDefaultFileLockManager(100)
        new FixedSharedModeCrossProcessCacheAccess("<cache>", cacheDir, lockOptions, lockManager1, countingInitAction, {}, {})
    }