ComparatorTests fails if xsd:date properties are used

[lgoltz]

The following tests fails if a date property is used for testing:

• propertyIsLessThan_match Any
• propertyIsLessThan_match All
• propertyIsGreaterThanEqualTo_match Any
• propertyIsLessThanEqualTo_match Any

Failure:

XPath expression cannot be evaluated: 
xs:date(ns1:nm_modify_date) ge xs:date('1993-08-31T22:00:00.000Z')
Invalid date "1993-08-31T22:00:00.000Z" (Day must be two digits). 

The XPath expression created for the assert is invalid cause of the timestamp appended to the date. The property value used in the assert (as well as in the filter of the request) should be a simple date without timestamp.

Service: http://ogctestbed12.lat-lon.de/deegree/services/wfs?service=WFS&request=GetCapabilities