public void EvaluateStringIndexOf()
{
Assert.AreEqual(3, this.EvaluateExpression("'foobar'.indexOf('bar')"));
Assert.AreEqual(-1, this.EvaluateExpression("'foobar'.indexOf('boo')"));
Assert.AreEqual(1, this.EvaluateExpression("'foobar'.indexOf('o')"));
Assert.AreEqual(2, this.EvaluateExpression("'foobar'.indexOf('o', 2)"));
}