public void ClearButton_Test()
{
// Arrange
var customersVM = new CustomersViewModel(_container, _windowManager, _customerAccess);
customersVM.NewCustomer.Name = "sampleName";
customersVM.NewCustomer.Address = "sampleAddress";
customersVM.NewCustomer.City = "sampleCity";
// Act
customersVM.ClearButton();
// Assert
Assert.Equal("", customersVM.NewCustomer.Name);
Assert.Equal("", customersVM.NewCustomer.Address);
Assert.Equal("", customersVM.NewCustomer.City);
}