added unit tests for schema validation and a test for not wellformed XML.

[utils] / support / general / src / test / resources / org / wamblee / xml / test.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" targetNamespace="http://wamblee.org/test"
    elementFormDefault="qualified">
    
    <xs:element name="root">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="elem"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
    
</xs:schema>