public void DeleteEntityReturnsCalled()
{
//Setup
var mService = new Mock <ITeacherService>();
mService.Setup(mock => mock.DeleteEntity(It.IsAny <int>()));
//Action
var controller = new TeacherController(mService.Object);
controller.DeleteEntityById(It.IsAny <int>());
//Assert
mService.Verify(mock => mock.DeleteEntity(It.IsAny <int>()), Times.Once);
}