func NewMockDirectoryWrapper(random *rand.Rand, delegate store.Directory) *MockDirectoryWrapper {
ans := &MockDirectoryWrapper{
noDeleteOpenFile: true,
preventDoubleWrite: true,
trackDiskUsage: false,
wrapLockFactory: true,
openFilesForWrite: make(map[string]bool),
openLocks: make(map[string]bool),
openLocksLock: &sync.Mutex{},
throttling: THROTTLING_SOMETIMES,
inputCloneCount: 0,
openFileHandles: make(map[io.Closer]error),
failOnCreateOutput: true,
failOnOpenInput: true,
assertNoUnreferencedFilesOnClose: true,
}
ans.BaseDirectoryWrapperImpl = NewBaseDirectoryWrapper(delegate)
ans.Locker = &sync.Mutex{}
// must make a private random since our methods are called from different
// methods; else test failures may not be reproducible from the original
// seed
ans.randomState = rand.New(rand.NewSource(random.Int63()))
ans.throttledOutput = NewThrottledIndexOutput(
MBitsToBytes(40+ans.randomState.Intn(10)), 5+ans.randomState.Int63n(5), nil)
// force wrapping of LockFactory
ans.myLockFactory = newMockLockFactoryWrapper(ans, delegate.LockFactory())
ans.init()
return ans
}
