public void CheckEqualButton_ResultString_Empty()
{
//Arrange
string Expected = "= 0";
//Act
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
((ICommand)MvvmObj.HandleNumpadEqualButtonCommand).Execute(null);
//Assert
Assert.Equal(Expected, MvvmObj.ResultString);
}
public void CheckEqualButton_ExpressionString_Empty()
{
//Arrange
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
MvvmObj.ExpressionString = "1+2";
string Expected = "";
//Act
((ICommand)MvvmObj.HandleNumpadEqualButtonCommand).Execute(null);
//Assert
Assert.Equal(Expected, MvvmObj.ExpressionString);
}
public void CheckClearButton_ResultString_OneCharacterRemovedFromTheEnd()
{
//Arrange
string Expected = "";
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
MvvmObj.ExpressionString = "1+2";
//Act
((ICommand)MvvmObj.HandleClearCommand).Execute(null);
//Assert
Assert.Equal(Expected, MvvmObj.ResultString);
}
public void CheckBackSpace_ExpressionString_OneCharacterRemovedFromTheEnd()
{
//Arrange
string Expected = "";
//Act
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
MvvmObj.ExpressionString = "0";
((ICommand)MvvmObj.HandleBackspaceCommand).Execute(null);
//Assert
Assert.Equal(Expected, MvvmObj.ExpressionString);
}
public void CheckNumberButton_Five()
{
//Arrange
string Expected = "5";
//Act
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
((ICommand)MvvmObj.HandleNumpadNumberButtonCommand).Execute("5");
//Assert
Assert.Equal(Expected, MvvmObj.ExpressionString);
}
public void CheckOperator_Plus()
{
//Arrange
string Expected = "+";
//Act
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
((ICommand)MvvmObj.HandleOperatorPadCommand).Execute("+");
bool result = Expected.Equals(MvvmObj.ExpressionString);
//Assert
Assert.True(result);
}
public void CanHandleOperatorPadCommand_ExpressionString_OneCharacterRemovedFromTheEnd()
{
//Arrange
Calculator.MainWindowViewModel.MainWindowViewModel MvvmObj = new Calculator.MainWindowViewModel.MainWindowViewModel();
//Act
MvvmObj.ExpressionString = "1";
bool Result = ((ICommand)MvvmObj.HandleOperatorPadCommand).CanExecute(null);
//Assert
Assert.True(Result);
}
/// <summary>
///
/// </summary>
public MainWindow()
{
InitializeComponent();
DataContext = new Calculator.MainWindowViewModel.MainWindowViewModel();
}
