public async Task DesktopStorageContainerCreateDirectory() { // Arrange string dirName = "CreateDirectory"; IStorage storage = new FileSystemStorage(this._storagePath); IStorageContainer container = await storage.GetContainerAsync(DesktopStorageContainerTests._precreatedContainerName); // Act IEnumerable <string> initialDirs = await container.GetDirectoriesAsync(""); await container.CreateDirectoryAsync(dirName); IEnumerable <string> finalDirs = await container.GetDirectoriesAsync(""); // Assert Assert.False(initialDirs.Any(d => string.Equals(d, dirName, StringComparison.OrdinalIgnoreCase))); Assert.True(finalDirs.Any(d => string.Equals(d, dirName, StringComparison.OrdinalIgnoreCase))); }