def _is_scaling(self):
""" Return False if ``self.property_name`` does not have default units of ``'px'``.
Test if ``self.css_class`` contains the scaling flag ``-s``. Returns True if ``-s`` is found and
False otherwise.
**Rules:**
- The ``self.property_name`` must possess units of pixels ``'px'``.
- If no property priority is set the encoded ``css_class`` must end with ``-s``.
- If priority is set the encoded ``css_class`` must end with ``-s-i``.
:return: (*bool*) -- Returns True if ``-s`` is found and False otherwise.
**Examples**
>>> scaling_parser = ScalingParser(css_class='font-weight-24-s')
>>> scaling_parser._is_scaling()
True
>>> scaling_parser.css_class = 'font-weight-24-s-i'
>>> scaling_parser._is_scaling()
True
>>> scaling_parser.css_class = 'font-weight-24'
>>> scaling_parser._is_scaling()
False
"""
unit_parser = UnitParser(property_name=self.css_property.name)
if unit_parser.default_units() != 'px':
return False
else:
return self.css_class.endswith(self.scaling_flag) or self.css_class.endswith(self.scaling_flag + '-i')
def test_default_units(self):
property_names = [
'font-size', 'padding', 'margin', 'pitch', 'text-indent', 'volume', 'width', 'font-weight', 'color',
'invalid', '', 'none',
]
expected_units = ['px', 'px', 'px', 'Hz', 'px', '%', 'px', '', '', '', '', '']
for i, property_name in enumerate(property_names):
unit_parser = UnitParser(property_name=property_name)
self.assertEqual(unit_parser.default_units(), expected_units[i])
