public CalculatorViewModel()
{
_calculator = new CalculatorSimple();
_operation = Operations.None;
AddCommand = new ActionCommand(Add);
SubtractCommand = new ActionCommand(Subtract);
MultiplyCommand = new ActionCommand(Multiply);
DivideCommand = new ActionCommand(Divide);
EquateCommand = new ActionCommand(Equate);
ZeroCommand = new ActionCommand(() => InputSymbol('0'));
OneCommand = new ActionCommand(() => InputSymbol('1'));
TwoCommand = new ActionCommand(() => InputSymbol('2'));
ThreeCommand = new ActionCommand(() => InputSymbol('3'));
FourCommand = new ActionCommand(() => InputSymbol('4'));
FiveCommand = new ActionCommand(() => InputSymbol('5'));
SixCommand = new ActionCommand(() => InputSymbol('6'));
SevenCommand = new ActionCommand(() => InputSymbol('7'));
EightCommand = new ActionCommand(() => InputSymbol('8'));
NineCommand = new ActionCommand(() => InputSymbol('9'));
MarkCommand = new ActionCommand(() => InputSymbol(','));
RemoveLastDigitCommand = new ActionCommand(RemoveLastDigit);
ClearCommand = new ActionCommand(Clear);
PlusMinusCommand = new ActionCommand(ChangeSign);
}
public void MustMultiplyTwoNumbers()
{
CalculatorSimple calculatorSimple = new CalculatorSimple();
int result = calculatorSimple.Multiplication(1, 3);
Assert.That(result, Is.EqualTo(3));
}
public void MustAdditionTwoNumbers()
{
CalculatorSimple calculatorSimple = new CalculatorSimple();
int result = calculatorSimple.Addition(1, 3);
Assert.That(result, Is.EqualTo(4));
}
public void TestSubstract()
{
var calculator = new CalculatorSimple();
Decimal result = calculator.Subtract(-2.1M, 2.0M);
Assert.IsTrue(Decimal.Equals(result, -4.1M));
}
public void TestMultiply()
{
var calculator = new CalculatorSimple();
Decimal result = calculator.Multiply(-2.0M, 2.0M);
Assert.IsTrue(Decimal.Equals(result, -4.0M));
}
public void TestDivide()
{
var calculator = new CalculatorSimple();
Decimal result = calculator.Divide(-5.0M, 2.5M);
Assert.IsTrue(Decimal.Equals(result, -2.0M));
}
public void TestAdd()
{
var calculator = new CalculatorSimple();
Decimal result = calculator.Add(-2.1M, 2.0M);
Assert.IsTrue(Decimal.Equals(result, -0.1M));
}
