public void ReturnsFalseWhenPreviousTransmissionExceedsCapacity()
{
StubPlatformFolder folder = CreateFolder();
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage {
Capacity = 10
};
storage.Initialize(provider);
bool firstTransmissionSaved = storage.Enqueue(() => new Transmission(new Uri("any://address"), new byte[42], string.Empty, string.Empty));
bool secondTransmissionSaved = storage.Enqueue(() => new Transmission(new Uri("any://address"), new byte[42], string.Empty, string.Empty));
Assert.True(firstTransmissionSaved);
Assert.False(secondTransmissionSaved);
}
public void HandlesFileNotFoundExceptionThrownWhenCalculatingSizeBecauseTransmissionHasAlreadyBeenDequeued()
{
var file = new StubPlatformFile();
file.OnGetName = () => "Dequeued" + TransmissionStorage.TransmissionFileExtension;
file.OnGetLength = () => { throw new FileNotFoundException(); };
StubPlatformFolder folder = CreateFolder(file);
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage();
storage.Initialize(provider);
bool transmissionEnqueued = storage.Enqueue(() => new StubTransmission());
Assert.True(transmissionEnqueued);
}
public void ChangesTransmissionFileExtensionToTemporaryToPreventConflictsWithOtherThreads()
{
string temporaryFileName = null;
StubPlatformFile file = CreateTransmissionFile();
file.OnRename = desiredName => temporaryFileName = desiredName;
StubPlatformFolder folder = CreateFolder(file);
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage();
storage.Initialize(provider);
storage.Dequeue();
Assert.True(temporaryFileName.EndsWith(TransmissionStorage.TemporaryFileExtension, StringComparison.OrdinalIgnoreCase));
}
public void DeletesTemporaryFileAfterLoadingToFreeDiskSpace()
{
bool fileDeleted = false;
StubPlatformFile file = CreateTransmissionFile();
file.OnDelete = () => fileDeleted = true;
StubPlatformFolder folder = CreateFolder(file);
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage();
storage.Initialize(provider);
storage.Dequeue();
Assert.True(fileDeleted);
}
public void ChangesTemporaryExtensionToPermanentToMakeFileAvailableForDequeueAsync()
{
string permanentFileName = null;
StubPlatformFile file = CreateFile("TemporaryFile");
file.OnRename = desiredName => permanentFileName = desiredName;
var folder = new StubPlatformFolder {
OnCreateFile = fileName => file
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage(provider);
storage.Enqueue(() => new StubTransmission());
Assert.True(permanentFileName.EndsWith(TransmissionStorage.TransmissionFileExtension, StringComparison.OrdinalIgnoreCase));
}
public void ReturnsFalseDoesNotEnqueueIfProcessHasNoRightToListFilesInApplicationFolder()
{
var folder = new StubPlatformFolder {
OnGetFiles = () => { throw new UnauthorizedAccessException(); }
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage();
storage.Initialize(provider);
storage.Enqueue(() => new StubTransmission());
bool result = storage.Enqueue(() => new StubTransmission());
Assert.False(result);
}
public void ReturnsFalseIfProcessHasNoRightToWriteToFilesInApplicationFolder()
{
var file = new StubPlatformFile {
OnOpen = () => { throw new UnauthorizedAccessException(); }
};
var folder = new StubPlatformFolder {
OnCreateFile = name => file
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage();
storage.Initialize(provider);
bool result = storage.Enqueue(() => new StubTransmission());
Assert.IsFalse(result);
}
public void GetsMultipleFilesFromFolderOnceAndCachesThemToReduceDiskAccess()
{
int numberOfGetFilesAsyncCalls = 0;
var files = new StubPlatformFile[] { CreateTransmissionFile(), CreateTransmissionFile() };
var folder = new StubPlatformFolder();
folder.OnGetFiles = () =>
{
numberOfGetFilesAsyncCalls += 1;
return(files);
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage(provider);
Assert.NotNull(storage.Dequeue());
Assert.NotNull(storage.Dequeue());
Assert.Equal(2, numberOfGetFilesAsyncCalls); // 1 for initializing size and 1 for 1 dequeue
}
public void CreatesNewFileWithTemporaryExtensionToPreventConflictsWithDequeueAsync()
{
string temporaryFileName = null;
var folder = new StubPlatformFolder
{
OnCreateFile = fileName =>
{
temporaryFileName = fileName;
return(new StubPlatformFile());
}
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage(provider);
storage.Enqueue(() => new StubTransmission());
Assert.True(temporaryFileName.EndsWith(TransmissionStorage.TemporaryFileExtension, StringComparison.OrdinalIgnoreCase));
}
public void ClosesFileStreamToEnsureFileCanBeDeleted()
{
bool fileStreamDisposed = false;
var fileStream = new StubStream {
OnDispose = disposing => fileStreamDisposed = true
};
StubPlatformFile file = CreateFile("TestFile" + TransmissionStorage.TransmissionFileExtension, fileStream);
bool fileStreamDisposedBeforeDeletion = false;
file.OnDelete = () => fileStreamDisposedBeforeDeletion = fileStreamDisposed;
StubPlatformFolder folder = CreateFolder(file);
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage(provider);
storage.Dequeue();
Assert.True(fileStreamDisposedBeforeDeletion);
}
public void ClosesFileStreamToEnsureChangesAreCommittedToDisk()
{
bool fileStreamDisposed = false;
var fileStream = new StubStream {
OnDispose = disposing => fileStreamDisposed = true
};
var file = new StubPlatformFile {
OnOpen = () => fileStream
};
var folder = new StubPlatformFolder {
OnCreateFile = fileName => file
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage(provider);
storage.Enqueue(() => new StubTransmission());
Assert.True(fileStreamDisposed);
}
public void CreatesFilesWithUniqueNamesToPreventConflictsWithOtherThreads()
{
var actualFileNames = new List <string>();
var folder = new StubPlatformFolder
{
OnCreateFile = fileName =>
{
actualFileNames.Add(fileName);
return(new StubPlatformFile());
}
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage(provider);
storage.Enqueue(() => new StubTransmission());
storage.Enqueue(() => new StubTransmission());
Assert.NotEqual(actualFileNames[0], actualFileNames[1]);
}
public void DeletesStoredFilesOlderThanTwoDays()
{
var files = new List <IPlatformFile>();
StubPlatformFile oldFile = CreateTransmissionFile();
oldFile.OnGetDateCreated = () => DateTimeOffset.Now.AddHours(-49);
oldFile.OnDelete = () => files.Remove(oldFile);
files.Add(oldFile);
var folder = new StubPlatformFolder {
OnGetFiles = () => files
};
var provider = new StubApplicationFolderProvider {
OnGetApplicationFolder = () => folder
};
var storage = new TransmissionStorage();
storage.Initialize(provider);
Transmission dequeued = storage.Dequeue();
Assert.IsNull(dequeued);
}
