public void CalculatorViewModel_InValidOperationTest()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
//try -7 + 42 = 35
vm.DigitButtonPress("7");
vm.DigitButtonPress("+/-");
vm.OperationButtonPress("@");
vm.DigitButtonPress("4");
vm.DigitButtonPress("2");
Assert.AreEqual(vm.FirstOperand, "-7");
Assert.AreEqual(vm.Display, "42");
try
{
//perform operation
vm.OperationButtonPress("=");
}
catch (Exception ex)
{
Assert.IsTrue(ex.GetType() == typeof(ArgumentException));
}
Assert.AreEqual(vm.Operation, "@");
Assert.AreEqual(vm.SecondOperand, "42");
Assert.AreEqual(vm.Display, "Unknown operation: @");
}
public void CalculatorViewModel_ValidOperationTestThenClear()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
//try -7 + 42 = 35
vm.DigitButtonPress("7");
vm.DigitButtonPress("+/-");
vm.OperationButtonPress("+");
vm.DigitButtonPress("4");
vm.DigitButtonPress("2");
Assert.AreEqual(vm.FirstOperand, "-7");
Assert.AreEqual(vm.Display, "42");
//perform operation
vm.OperationButtonPress("=");
Assert.AreEqual(vm.Operation, "+");
Assert.AreEqual(vm.SecondOperand, "42");
Assert.AreEqual(vm.Display, "35");
Assert.AreEqual(vm.FullExpression, "-7 + 42 = 35");
//ClearAll
vm.DigitButtonPress("C");
Assert.AreEqual(vm.Display, "0");
Assert.AreEqual(vm.FirstOperand, string.Empty);
Assert.AreEqual(vm.SecondOperand, string.Empty);
Assert.AreEqual(vm.Operation, string.Empty);
Assert.AreEqual(vm.LastOperation, string.Empty);
Assert.AreEqual(vm.FullExpression, string.Empty);
}
private void ClearButton_Click(object sender, RoutedEventArgs e)
{
ViewModels.CalculatorViewModel _viewModel = (this.DataContext as ViewModels.CalculatorViewModel);
if (_viewModel.ClearCommand.CanExecute(null))
{
_viewModel.ClearCommand.Execute(null);
}
}
public void CalculatorViewModel_ConstructorTest()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
Assert.IsTrue(vm.GetType() == typeof(ViewModels.CalculatorViewModel));
Assert.AreEqual(vm.Display, "0");
Assert.AreEqual(vm.FirstOperand, string.Empty);
Assert.AreEqual(vm.SecondOperand, string.Empty);
Assert.AreEqual(vm.Operation, string.Empty);
Assert.AreEqual(vm.LastOperation, string.Empty);
Assert.AreEqual(vm.FullExpression, string.Empty);
}
public void CalculatorViewModel_CompositeOperationTestThenClear()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
//try -7 + 42 = 35
vm.DigitButtonPress("7");
vm.DigitButtonPress("+/-");
vm.OperationButtonPress("+");
vm.DigitButtonPress("4");
vm.DigitButtonPress("2");
Assert.AreEqual(vm.FirstOperand, "-7");
Assert.AreEqual(vm.Display, "42");
//perform operation
vm.OperationButtonPress("+");
Assert.AreEqual(vm.Operation, "+");
Assert.AreEqual(vm.SecondOperand, "42");
Assert.AreEqual(vm.Display, "35");
Assert.AreEqual(vm.FullExpression, "-7 + 42 = 35");
vm.DigitButtonPress("1");
vm.DigitButtonPress("0");
//perform operation
vm.OperationButtonPress("=");
Assert.AreEqual(vm.Display, "45");
Assert.AreEqual(vm.FullExpression, "35 + 10 = 45");
//perform tan(45)
vm.SingularOperationButtonPress("tan");
Assert.AreEqual(vm.Display, "1");
Assert.AreEqual(vm.FullExpression, "tan(45) = 1");
}
public void CalculatorViewModel_CompositeOperationTestThenClear()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
//try -7 + 42 = 35
vm.DigitButtonPress("7");
vm.DigitButtonPress("+/-");
vm.OperationButtonPress("+");
vm.DigitButtonPress("4");
vm.DigitButtonPress("2");
Assert.AreEqual(vm.FirstOperand, "-7");
Assert.AreEqual(vm.Display, "42");
//perform operation
vm.OperationButtonPress("+");
Assert.AreEqual(vm.Operation, "+");
Assert.AreEqual(vm.SecondOperand, "42");
Assert.AreEqual(vm.Display, "35");
Assert.AreEqual(vm.FullExpression, "-7 + 42 = 35");
vm.DigitButtonPress("1");
vm.DigitButtonPress("0");
//perform operation
vm.OperationButtonPress("=");
Assert.AreEqual(vm.Display, "45");
Assert.AreEqual(vm.FullExpression, "35 + 10 = 45");
//perform tan(45)
vm.SingularOperationButtonPress("tan");
Assert.AreEqual(vm.Display, "1");
Assert.AreEqual(vm.FullExpression, "tan(45) = 1");
}
public void CalculatorViewModel_ConstructorTest()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
Assert.IsTrue(vm.GetType() == typeof(ViewModels.CalculatorViewModel));
Assert.AreEqual(vm.Display, "0");
Assert.AreEqual(vm.FirstOperand, string.Empty);
Assert.AreEqual(vm.SecondOperand, string.Empty);
Assert.AreEqual(vm.Operation, string.Empty);
Assert.AreEqual(vm.LastOperation, string.Empty);
Assert.AreEqual(vm.FullExpression, string.Empty);
}
public void CalculatorViewModel_ValidOperationTestThenClear()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
//try -7 + 42 = 35
vm.DigitButtonPress("7");
vm.DigitButtonPress("+/-");
vm.OperationButtonPress("+");
vm.DigitButtonPress("4");
vm.DigitButtonPress("2");
Assert.AreEqual(vm.FirstOperand, "-7");
Assert.AreEqual(vm.Display, "42");
//perform operation
vm.OperationButtonPress("=");
Assert.AreEqual(vm.Operation, "+");
Assert.AreEqual(vm.SecondOperand, "42");
Assert.AreEqual(vm.Display, "35");
Assert.AreEqual(vm.FullExpression, "-7 + 42 = 35");
//ClearAll
vm.DigitButtonPress("C");
Assert.AreEqual(vm.Display, "0");
Assert.AreEqual(vm.FirstOperand, string.Empty);
Assert.AreEqual(vm.SecondOperand, string.Empty);
Assert.AreEqual(vm.Operation, string.Empty);
Assert.AreEqual(vm.LastOperation, string.Empty);
Assert.AreEqual(vm.FullExpression, string.Empty);
}
public void CalculatorViewModel_InValidOperationTest()
{
ViewModels.CalculatorViewModel vm = new ViewModels.CalculatorViewModel();
//try -7 + 42 = 35
vm.DigitButtonPress("7");
vm.DigitButtonPress("+/-");
vm.OperationButtonPress("@");
vm.DigitButtonPress("4");
vm.DigitButtonPress("2");
Assert.AreEqual(vm.FirstOperand, "-7");
Assert.AreEqual(vm.Display, "42");
try
{
//perform operation
vm.OperationButtonPress("=");
}
catch(Exception ex)
{
Assert.IsTrue(ex.GetType() == typeof(ArgumentException));
}
Assert.AreEqual(vm.Operation, "@");
Assert.AreEqual(vm.SecondOperand, "42");
Assert.AreEqual(vm.Display, "Unknown operation: @");
}
public CalculatorView()
{
InitializeComponent();
DataContext = new ViewModels.CalculatorViewModel();
}
public AddCommandClass(ViewModels.CalculatorViewModel viewModel)
{
this._viewModel = viewModel;
}
