def test_math(self):
from libcellml import Component
# appendMath(const std::string &math)
x = Component()
x.appendMath('More maths')
x.appendMath(' please!')
# std::string math()
self.assertEqual(x.math(), 'More maths please!')
x = Component()
self.assertEqual(x.math(), '')
# void setMath(const std::string &math)
x.setMath('bonjour')
self.assertEqual(x.math(), 'bonjour')
x.setMath('hola')
self.assertEqual(x.math(), 'hola')
x.removeMath()
self.assertEqual(x.math(), '')
a.setUnits(per_month)
b.setUnits(b_units)
c.setUnits(per_month)
d.setUnits(d_units)
# 3.f
# Call the validator again to check the model.
# Expect one error regarding a missing unit in the MathML.
validator.validateModel(model)
print_issues(validator)
# 3.g
# Units for constants inside the MathML must be specified at the time.
# This means we need to adjust equation1 to include the per_month units.
# We have to wipe all the existing MathML and replace it.
component.removeMath()
component.setMath(math_header)
equation1 = \
" <apply><eq/>"\
" <ci>c</ci>"\
" <apply><plus/>"\
" <ci>a</ci>"\
" <cn cellml:units=\"per_month\">2.0</cn>"\
" </apply>"\
" </apply>"
component.appendMath(equation1)
component.appendMath(equation2)
component.appendMath(equation3)
component.appendMath(math_footer)
# 3.h
