public void ParsePreIncrementExpressionWithVariable()
{
IExpression expression = this.ParseExpression("++b");
Assert.IsNotNull(expression);
Assert.IsInstanceOfType(expression, typeof(IncrementExpression));
IncrementExpression incexpr = (IncrementExpression)expression;
Assert.AreEqual(IncrementOperator.PreIncrement, incexpr.Operator);
Assert.IsNotNull(incexpr.Expression);
Assert.IsInstanceOfType(incexpr.Expression, typeof(VariableExpression));
}