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= Testing XSL FO =

The open source XSL formatters are the best sources for tools for testing formatted documents. The xmlroff XSL formatter (http://xmlroff.org/) has a framework for rasterising PDF or !PostScript output and comparing formatted pages against a reference, and the FOP XSL formatter (http://xmlgraphics.apache.org/fop/) has a framework for comparing the XML renditions of its area tree against a reference.

A description of available test suites is at http://xmlroff.org/wiki/XSLTestSuites.

== xmlroff Testing Module ==

This module serves multiple purposes for the xmlroff XSL formatter:
 * Comparing results between different versions of xmlroff
 * Comparing results between xmlroff’s different output formats
 * Comparing xmlroff output to files produced another way, e.g., from a different formatter – FO or otherwise

See [wiki:TestingXSLFO/xmlroff xmlroff Testing Module]

== FOP Layout Engine Tests ==

FOP’s layout engine tests are integrated with other JUnit tests that are run in the FOP build process.  Each test includes a complete FO document, and assertions are made (and checked) about the FOP-specific area-tree that results from formatting the FO document with FOP.

See [wiki:TestingXSLFO/FOP FOP Layout Engine Tests]

== RenderX Validators ==

RenderX has multiple XSL-FO validators at
http://www.renderx.com/tools/validators.html