public void TestDirectoryCreation()
{
var operationsFactoryMock = new Mock <IOperationsFactory>();
var directoryServiceMock = new Mock <IDirectoryService>();
var fullDirectoryPath = Path.Combine(SelectedDirectoryName, DirectoryName);
directoryServiceMock
.Setup(m => m.CreateDirectory(fullDirectoryPath))
.Verifiable();
var fileOpeningServiceMock = new Mock <IFileOpeningService>();
var fileServiceMock = new Mock <IFileService>();
var pathServiceMock = new Mock <IPathService>();
pathServiceMock
.Setup(m => m.Combine(SelectedDirectoryName, DirectoryName))
.Returns(fullDirectoryPath);
IOperationsService operationsService = new OperationsService(
operationsFactoryMock.Object,
directoryServiceMock.Object,
fileOpeningServiceMock.Object,
fileServiceMock.Object,
pathServiceMock.Object);
operationsService.CreateDirectory(SelectedDirectoryName, DirectoryName);
directoryServiceMock.Verify(m => m.CreateDirectory(fullDirectoryPath), Times.Once());
}