Find Element where attribute value contains

[adeel41]

we should make XenonElementsFinder extensible so that you can search elements by different ways but it should not pollute the XelementElementsFinder API? so rather than having different methods for searching elements differently we can ask for a spec argument and do accordingly.

For example, I want to search elements by 'attribute value contains', so solution 1 is to add following method

AttributeValueContains(string attributeName, string attributeValue)

or change AttributeIs method to accept a spec. e.g.

AttributeIs(FindSpec spec)

and then use it like this

Click(where => where.Attribute( AttributeSpec.Name("data-modal").Value.Contains("test") ) );
/// or you can use .Exact , .BeginsWith, .EndsWith, DoesNotContain, etc.

this is just an example, we can discuss about api.