public void ParseOrExpression()
{
IExpression expression = this.ParseExpression("a===1 || b===1");
Assert.IsNotNull(expression);
Assert.IsInstanceOfType(expression, typeof(OrExpression));
OrExpression orexpr = (OrExpression)expression;
Assert.IsInstanceOfType(orexpr.LeftExpression, typeof(CompareExpression));
Assert.IsInstanceOfType(orexpr.RightExpression, typeof(CompareExpression));
}