public void ParseSimpleRem()
{
Parser parser = new Parser("10 rem 20.");
IExpression expression = parser.ParseExpression();
Assert.IsNotNull(expression);
Assert.IsInstanceOfType(expression, typeof(RemExpression));
RemExpression remexpression = (RemExpression)expression;
Assert.IsInstanceOfType(remexpression.LeftExpression, typeof(ConstantExpression));
Assert.IsInstanceOfType(remexpression.RightExpression, typeof(ConstantExpression));
Assert.AreEqual(10, ((ConstantExpression)remexpression.LeftExpression).Value);
Assert.AreEqual(20, ((ConstantExpression)remexpression.RightExpression).Value);
}