def test_serialise(self, GradientFill):
gf = GradientFill(degree=90, left=1, right=2, top=3, bottom=4, stop=[BLACK, WHITE])
xml = tostring(gf.to_tree())
expected = """
<fill>
<gradientFill bottom="4" degree="90" left="1" right="2" top="3" type="linear">
<stop position="0">
<color rgb="00000000"></color>
</stop>
<stop position="1">
<color rgb="00FFFFFF"></color>
</stop>
</gradientFill>
</fill>
"""
diff = compare_xml(xml, expected)
assert diff is None, diff
def test_create(self, GradientFill):
src = """
<fill>
<gradientFill xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" degree="90">
<stop position="0">
<color theme="0"/>
</stop>
<stop position="1">
<color theme="4"/>
</stop>
</gradientFill>
</fill>
"""
xml = fromstring(src)
fill = GradientFill.from_tree(xml)
assert fill.stop == [Color(theme=0), Color(theme=4)]
