django/tests/regressiontests/test_utils/tests.py

r"""
# Some checks of the doctest output normalizer.
# Standard doctests do fairly 
>>> from django.utils import simplejson
>>> from django.utils.xmlutils import SimplerXMLGenerator
>>> from StringIO import StringIO

>>> def produce_long():
...     return 42L

>>> def produce_int():
...     return 42

>>> def produce_json():
...     return simplejson.dumps(['foo', {'bar': ('baz', None, 1.0, 2), 'whiz': 42}])

>>> def produce_xml():
...     stream = StringIO()
...     xml = SimplerXMLGenerator(stream, encoding='utf-8')
...     xml.startDocument()
...     xml.startElement("foo", {"aaa" : "1.0", "bbb": "2.0"})
...     xml.startElement("bar", {"ccc" : "3.0"})
...     xml.characters("Hello")
...     xml.endElement("bar")
...     xml.startElement("whiz", {})
...     xml.characters("Goodbye")
...     xml.endElement("whiz")
...     xml.endElement("foo")
...     xml.endDocument()
...     return stream.getvalue()

>>> def produce_xml_fragment():
...     stream = StringIO()
...     xml = SimplerXMLGenerator(stream, encoding='utf-8')
...     xml.startElement("foo", {"aaa": "1.0", "bbb": "2.0"})
...     xml.characters("Hello")
...     xml.endElement("foo")
...     xml.startElement("bar", {"ccc": "3.0", "ddd": "4.0"})
...     xml.endElement("bar")
...     return stream.getvalue()

# Long values are normalized and are comparable to normal integers ...
>>> produce_long()
42

# ... and vice versa
>>> produce_int()
42L

# JSON output is normalized for field order, so it doesn't matter
# which order json dictionary attributes are listed in output
>>> produce_json()
'["foo", {"bar": ["baz", null, 1.0, 2], "whiz": 42}]'

>>> produce_json()
'["foo", {"whiz": 42, "bar": ["baz", null, 1.0, 2]}]'

# XML output is normalized for attribute order, so it doesn't matter 
# which order XML element attributes are listed in output
>>> produce_xml()
'<?xml version="1.0" encoding="UTF-8"?>\n<foo aaa="1.0" bbb="2.0"><bar ccc="3.0">Hello</bar><whiz>Goodbye</whiz></foo>'

>>> produce_xml()
'<?xml version="1.0" encoding="UTF-8"?>\n<foo bbb="2.0" aaa="1.0"><bar ccc="3.0">Hello</bar><whiz>Goodbye</whiz></foo>'

>>> produce_xml_fragment()
'<foo aaa="1.0" bbb="2.0">Hello</foo><bar ccc="3.0" ddd="4.0"></bar>'

>>> produce_xml_fragment()
'<foo bbb="2.0" aaa="1.0">Hello</foo><bar ddd="4.0" ccc="3.0"></bar>'

"""