public void ParseVariable()
{
ModelParser parser = new ModelParser("foo");
IExpression expression = parser.ParseExpression();
Assert.IsNotNull(expression);
Assert.IsInstanceOfType(expression, typeof(VariableExpression));
VariableExpression vexpression = (VariableExpression)expression;
Assert.AreEqual("foo", vexpression.Name);
Assert.AreEqual("foo", expression.AsString());
}