Typically a WS client consumes a remote WSDL that either contains or points to an XSD Schema document.

Create a set of standalone XSD files that use a comprehensive set of XSD features. Each XSD should demonstrate the use of a particular XSD feature.

Here is an arbirary (probably incomplete) list of requred features:

• anonymous types
• xsd import
• simpleType with restriction
• xsd:annotation with documentation
• attribute ref
• element ref
• full set of xsd types
• complexTypes with simpleContent
• complexType inheritance
• nillable
• minOccurs, maxOccurs

Check the XSDPrimer for additional features that we will have to support. The primer contains tons of examples and valid XSD documents, which will probably form a comprehensive input set

http://www.w3.org/TR/xmlschema-0/

Each XSD provides the input for a JUnit test. Use wscompile to transform the test XSDs to Java objects, which then become the test fixture.