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Helper functions for unit tests.
$Id: helpers.py,v 1.1.1.1 2004/06/19 14:53:55 dreamcatcher Exp $
N( s dedents expected outputs
actual outputc C s5 d i t i | i ƒ | i ƒ | | d d ƒƒ Sd S( sÈ Display a compact unified diff between old text and new text.
Bugs: does not work when old or new is an empty string (this seems to
be a bug/limitation of the Python 2.3 difflib module).
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s lineterms N( s joins difflibs unified_diffs olds
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| | f Sn d i | i ƒ ƒ SWn t i j
o } d | Sn Xd S( s‘ Normalizes an XML document.
The idea is that two semantically equivalent XML documents should be
normalized into the same canonical representation. Therefore if two
documents compare equal after normalization, they are semantically
equivalent.
The canonical representation used here has nothing to do with W3C Canonical
XML.
This function normalizes indentation, whitespace and newlines (except
inside text nodes), element attribute order, expands character references,
expands shorthand notation of empty XML elements ("
becomes
"
").
If an element has an attribute test:sort="children", the attribute is
removed and its immediate child nodes are sorted textually. If the
attribute value is test:sort="recursively", the sorting happens at
all levels (unless specifically prohibited with test:sort="not").
If recursively_sort is given, it is a sequence of tags that will have
test:sort="recursively" automatically appended to their attribute lists in
the text. Use it when you cannot or do not want to modify the XML document
itself.
Caveats:
- normalize_xml does not deal well with text nodes
- normalize_xml does not help when different prefixes are used for the
same namespace
- normalize_xml does not handle all XML features (CDATA sections, inline
DTDs, processing instructions, comments)
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