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# @license: http://www.opensource.org/licenses/mit-license.php
# @author: see AUTHORS file
"""Make sure we're using the fastest backend available"""
from openpyxl import LXML
try:
from xml.etree.cElementTree import Element as cElement
C = True
except ImportError:
C = False
try:
from lxml.etree import Element as lElement
except ImportError:
lElement is None
from xml.etree.ElementTree import Element as pyElement
[docs]def test_backend():
from openpyxl.xml.functions import Element
if LXML is True:
assert Element == lElement
elif C is True:
assert Element == cElement
else:
assert Element == pyElement
[docs]def test_namespace_register():
from openpyxl.xml.functions import Element, tostring
from openpyxl.xml.constants import SHEET_MAIN_NS
e = Element('{%s}sheet' % SHEET_MAIN_NS)
xml = tostring(e)
if hasattr(xml, "decode"):
xml = xml.decode("utf-8")
assert xml.startswith("<s:sheet")