Test assertions

Document assertions

Element assertions

XPath expression assertions

XML schema conformance assertion

The following methods let you check the conformance of an XML document or node according to a schema. Any validation schema language that is supported by lxml may be used:

• DTD

• XSchema

• RelaxNG

• Schematron

Please read Validation with lxml to build your own schema objects in these various schema languages.

XML documents comparison assertion

Sometimes, one may want to check a global XML document, because they know exactly what is expected, and can rely on a kind of “string compare”. Of course, XML is not a simple string, and requires more than just an assert data == expected, because order of elements can vary, order of attributes too, namespaces can come into play, etc.

In these cases, one can use the powerful - also dangerous - feature of LXML Output Checker. See also the documentation of the module doctestcompare for more information on the underlying implementation.

And as always, remember that the whole purpose of this xmlunittest is to avoid any comparison of XML formated strings. But, whatever, this function could help. Maybe.