public void ExceptionIsNotThrownIfParameterIsNotNumericUpDown()
{
// Arrange
var command = new DecrementNumericUpDownValue();
// Assert
Assert.DoesNotThrow(() => command.Execute(new object()));
}
public void CanExecuteReturnsTrue()
{
// Arrange
var command = new DecrementNumericUpDownValue();
// Act
var canExecute = command.CanExecute(null);
// Assert
Assert.IsTrue(canExecute);
}
public void NumericUpDownValueIsNotDecrementedBeyondMinimum()
{
// Arrange
var controlMock = new Mock <IIntValueControl>();
controlMock.Setup(c => c.Minimum).Returns(1);
var command = new DecrementNumericUpDownValue();
// Act
command.Execute(controlMock.Object);
// Assert
controlMock.VerifySet(c => c.Value--, Times.Never);
}
public void CommandDecrementsNumericUpDownValue()
{
// Arrange
var upDown = new NumericUpDown
{
Minimum = 0,
Value = 5
};
var command = new DecrementNumericUpDownValue();
// Act
command.Execute(upDown);
// Assert
Assert.That(upDown.Value, Is.EqualTo(4));
}
public void NumericUpDownValueIsNotDecrementedBeyondMinimum(
int minimum,
int value,
int expected)
{
// Arrange
var control = new TestingValueControl
{
Minimum = minimum,
Value = value
};
var command = new DecrementNumericUpDownValue();
// Act
command.Execute(control);
// Assert
Assert.AreEqual(expected, control.Value);
}