public void AlterationTest()
{
// Create inital combination
ExpressionInt expression = _expression1.Combine(_expression2, ExpressionOperator.Plus) as ExpressionInt;
Assert.AreEqual(expression.Result, 3);
// Alter combined object
_expression2 = _expression2.Combine(_expression3, ExpressionOperator.Plus) as ExpressionInt;
Assert.AreEqual(expression.Result, 3);
}
public void MultiplyTest()
{
ExpressionInt expression = _expression1.Combine(_expression2, ExpressionOperator.Multiply) as ExpressionInt;
// 1 * 2
Assert.AreEqual(expression.Result, 2);
expression = expression.Combine(_expression3, ExpressionOperator.Multiply) as ExpressionInt;
// 1 * 2 * 3
Assert.AreEqual(expression.Result, 6);
}
public void DivideTest()
{
ExpressionInt expression = _expression1.Combine(_expression2, ExpressionOperator.Divide) as ExpressionInt;
// 1 / 2
Assert.AreEqual(expression.Result, 0);
expression = expression.Combine(_expression3, ExpressionOperator.Divide) as ExpressionInt;
// (1 / 2) / 3
Assert.AreEqual(expression.Result, 0);
}
public void MinusTest()
{
ExpressionInt expression = _expression1.Combine(_expression2, ExpressionOperator.Minus) as ExpressionInt;
// 1 - 2
Assert.AreEqual(expression.Result, -1);
expression = expression.Combine(_expression3, ExpressionOperator.Minus) as ExpressionInt;
// 1 - 2 - 3
Assert.AreEqual(expression.Result, -4);
}
public void PlusTest()
{
ExpressionInt expression = _expression1.Combine(_expression2, ExpressionOperator.Plus) as ExpressionInt;
// 1 + 2
Assert.AreEqual(expression.Result, 3);
expression = expression.Combine(_expression3, ExpressionOperator.Plus) as ExpressionInt;
// 1 + 2 + 3
Assert.AreEqual(expression.Result, 6);
}
public void Initialize()
{
_expression1 = new ExpressionInt(new string[0], () => 1);
_expression2 = new ExpressionInt(new string[0], () => 2);
_expression3 = new ExpressionInt(new string[0], () => 3);
}
public void DoubleToIntCastTest()
{
ExpressionInt expression = _expression1;
Assert.AreEqual(expression.Result, 1);
}
