public void Can_add_element_to_index()
{
var index = new Index<string>(new CharSet());
index.AddKey("lala", "value1");
index.AddKey("lala", "value2");
index.AddKey("pepe", "value3");
index.AddKey("la", "value4");
index.AddKey("lalala", "value5");
var values = index.GetValues("lala");
Assert.AreEqual(2, values.Count);
values = index.GetValues("pepe");
Assert.AreEqual(1, values.Count);
Assert.AreEqual("value3", values[0].Value);
values = index.GetValues("la");
Assert.AreEqual(1, values.Count);
Assert.AreEqual("value4", values[0].Value);
values = index.GetValues("lalala");
Assert.AreEqual(1, values.Count);
Assert.AreEqual("value5", values[0].Value);
}