public void HandleButtonPlusTest()
{
_calculatorHelper = new CalculatorHelper();
_calculatorHelper.HandleButton1();
_calculatorHelper.HandleButtonPlus();
Assert.AreEqual("1 +", CalculatorHelper.DisplayText);
}
public static CalculatorHelper GetInstance()
{
if (_instance == null)
{
_instance = new CalculatorHelper();
}
return(_instance);
}
public void StateIsEnteringOperand2Test()
{
_calculatorHelper = new CalculatorHelper();
// 1 + 1
_calculatorHelper.HandleButton1();
_calculatorHelper.HandleButtonPlus();
_calculatorHelper.HandleButton1();
Assert.AreEqual(CalculatorStates.EnteringOperand2, CalculatorHelper.State);
}
public void DisplayShowsOnePlusOneTest()
{
_calculatorHelper = new CalculatorHelper();
// 1 + 1
_calculatorHelper.HandleButton1();
_calculatorHelper.HandleButtonPlus();
_calculatorHelper.HandleButton1();
Assert.AreEqual("1 + 1", CalculatorHelper.DisplayText);
Assert.AreEqual(1, CalculatorHelper.Operand2);
}
private void GiveResult(object sender, RoutedEventArgs e)
{
try
{
resultLabel.Content = CalculatorHelper.CalCulateGlobalResult(resultLabel.Content.ToString());
}
catch
{
resultLabel.Content = CalculatorHelper.errorSyntax;
}
}
private void OperatorButton_Click(object sender, RoutedEventArgs e)
{
if (!(sender is Button button))
{
return;
}
char c = ((string)button.Content)[0];
Operator op = CalculatorHelper.CharToOperator(c);
_calculator.SetOperator(op);
}
public static void Slove(string x, string y, string operation)
{
double a;
double b;
if (CalculatorHelper.CheckNumCondition(x) && CalculatorHelper.CheckNumCondition(y))
{
double.TryParse(x, out a);
double.TryParse(y, out b);
switch (operation)
{
case "M":
Console.WriteLine(a * b);
break;
case "D":
Console.WriteLine(a / b);
break;
case "A":
Console.WriteLine(a - b);
break;
case "S":
Console.WriteLine(a + b);
break;
default:
Console.WriteLine("error");
break;
}
}
else
{
Console.WriteLine("error");
}
}
public void StateIsClearAtStartUpTest()
{
_calculatorHelper = new CalculatorHelper();
Assert.AreEqual(CalculatorStates.Clear, CalculatorHelper.State);
}
public void HandleButton1Test()
{
_calculatorHelper = new CalculatorHelper();
_calculatorHelper.HandleButton1();
Assert.AreEqual(1, CalculatorHelper.Operand1);
}
public void DisplayShows1Test()
{
_calculatorHelper = new CalculatorHelper();
_calculatorHelper.HandleButton1();
Assert.AreEqual("1", CalculatorHelper.DisplayText);
}
public CalculatorForm()
{
InitializeComponent();
CalculatorHelper = new CalculatorHelper();
}
