public async Task TestClear()
{
TaskCompletionSource <bool> source = new TaskCompletionSource <bool>();
IQueuedFileWriter fileWriter = new QueuedFileWriter(ApplicationData.Current.LocalFolder, "test.txt");
await fileWriter.WriteLine("1");
await fileWriter.WriteLine("2");
await fileWriter.WriteLine("3");
fileWriter.QueueEmpty += () => source.SetResult(true);
await fileWriter.WriteLine("4");
await source.Task;
List <string> list = new List <string>()
{
"1", "2", "3", "4"
};
List <string> collection = (await FileIO.ReadLinesAsync(await ApplicationData.Current.LocalFolder.CreateFileAsync("test.txt", CreationCollisionOption.OpenIfExists))).ToList();
Assert.AreEqual(list.Count, collection.Count, "Not 4 elements");
CollectionAssert.AreEqual(list, collection);
await fileWriter.Clear();
collection = (await FileIO.ReadLinesAsync(await ApplicationData.Current.LocalFolder.CreateFileAsync("test.txt", CreationCollisionOption.OpenIfExists))).ToList();
Assert.AreEqual(0, collection.Count, "Not 0 elements");
collection = await fileWriter.ReadLines();
Assert.AreEqual(0, collection.Count, "Not 0 elements");
}
public async Task TestReadWriteFile()
{
IQueuedFileWriter fileWriter = new QueuedFileWriter(ApplicationData.Current.LocalFolder, "test.txt");
List <string> list = new List <string>();
for (int i = 0; i < 40; i++)
{
await fileWriter.WriteLine(i.ToString());
list.Add(i.ToString());
}
Assert.IsNotNull(await fileWriter.ReadLines());
}
public async Task TestReadCacheFile()
{
TaskCompletionSource <bool> source = new TaskCompletionSource <bool>();
IQueuedFileWriter fileWriter = new QueuedFileWriter(ApplicationData.Current.LocalFolder, "test.txt");
List <string> list = new List <string>();
for (int i = 0; i < 40; i++)
{
if (i >= 39)
{
fileWriter.QueueEmpty += () => source.SetResult(true);
}
await fileWriter.WriteLine(i.ToString());
list.Add(i.ToString());
}
await source.Task;
List <string> collection = await fileWriter.ReadLines();
Assert.AreEqual(list.Count, collection.Count, "Not 40 elements");
CollectionAssert.AreEqual(list, collection);
}
public async Task TestMultipleWriteFile()
{
TaskCompletionSource <bool> source1 = new TaskCompletionSource <bool>();
IQueuedFileWriter fileWriter = new QueuedFileWriter(ApplicationData.Current.LocalFolder, "test.txt");
await fileWriter.WriteLine("1");
await fileWriter.WriteLine("2");
await fileWriter.WriteLine("3");
fileWriter.QueueEmpty += () => source1.TrySetResult(true);
await fileWriter.WriteLine("4");
await source1.Task;
List <string> list = new List <string>()
{
"1", "2", "3", "4"
};
StorageFile storageFile = await ApplicationData.Current.LocalFolder.CreateFileAsync("test.txt", CreationCollisionOption.OpenIfExists);
List <string> collection = (await FileIO.ReadLinesAsync(storageFile)).ToList();
Assert.AreEqual(list.Count, collection.Count, "Not 4 elements");
CollectionAssert.AreEqual(list, collection);
//second write on same object
TaskCompletionSource <bool> source2 = new TaskCompletionSource <bool>();
await fileWriter.WriteLine("1");
await fileWriter.WriteLine("2");
await fileWriter.WriteLine("3");
fileWriter.QueueEmpty += () => source2.TrySetResult(true);
await fileWriter.WriteLine("4");
await source2.Task;
list = new List <string>()
{
"1", "2", "3", "4", "1", "2", "3", "4"
};
collection = (await FileIO.ReadLinesAsync(storageFile)).ToList();
Assert.AreEqual(list.Count, collection.Count, "Not 8 elements");
CollectionAssert.AreEqual(list, collection);
//thrid write on new object
TaskCompletionSource <bool> source3 = new TaskCompletionSource <bool>();
fileWriter.Dispose();
fileWriter = new QueuedFileWriter(ApplicationData.Current.LocalFolder, "test.txt");
await fileWriter.WriteLine("1");
await fileWriter.WriteLine("2");
await fileWriter.WriteLine("3");
fileWriter.QueueEmpty += () => source3.TrySetResult(true);
await fileWriter.WriteLine("4");
await source3.Task;
list = new List <string>()
{
"1", "2", "3", "4", "1", "2", "3", "4", "1", "2", "3", "4"
};
collection = (await FileIO.ReadLinesAsync(storageFile)).ToList();
Assert.AreEqual(list.Count, collection.Count, "Not 12 elements");
CollectionAssert.AreEqual(list, collection);
}
