def test_units(self):
# Test writing of units
u1 = myokit.parse_unit('kg*m^2/mole^3 (0.123)')
u2 = myokit.parse_unit('1 (4.56)')
m1 = cellml.Model('mmm')
m1.add_units('flibbit', u1)
m1.add_units('special_volt', myokit.units.Volt)
c = m1.add_component('ccc')
c.add_units('flibbit', u2)
p = c.add_variable('p', 'flibbit')
p.set_rhs(myokit.Number(1, u2))
d = m1.add_component('ddd')
q = d.add_variable('q', 'flibbit')
q.set_rhs(myokit.Number(2, u1))
xml = cellml.write_string(m1)
m2 = cellml.parse_string(xml)
p, q = m2['ccc']['p'], m2['ddd']['q']
self.assertEqual(p.units().name(), 'flibbit')
self.assertEqual(q.units().name(), 'flibbit')
self.assertEqual(p.units().myokit_unit(), u2)
self.assertEqual(q.units().myokit_unit(), u1)
self.assertEqual(
m2.find_units('special_volt').myokit_unit(), myokit.units.volt)
def test_versions(self):
# Tests writing different CellML versions
# CellML 1.0
units = {
myokit.parse_unit('pF'): 'picofarad',
}
w = cellml.CellMLExpressionWriter('1.0')
w.set_unit_function(lambda x: units[x])
xml = w.ex(myokit.Number(1, myokit.units.pF))
self.assertIn(cellml.NS_CELLML_1_0, xml)
# CellML 1.1
w = cellml.CellMLExpressionWriter('1.1')
w.set_unit_function(lambda x: units[x])
xml = w.ex(myokit.Number(1, myokit.units.pF))
self.assertIn(cellml.NS_CELLML_1_1, xml)
# CellML 1.2
self.assertRaisesRegex(ValueError, 'Unknown CellML version',
cellml.CellMLExpressionWriter, '1.2')
# CellML 2.0
w = cellml.CellMLExpressionWriter('2.0')
w.set_unit_function(lambda x: units[x])
xml = w.ex(myokit.Number(1, myokit.units.pF))
self.assertIn(cellml.NS_CELLML_2_0, xml)
def ifif(self):
"""
Test of If class
"""
true = myokit.Number(1)
false = myokit.Number(0)
two = myokit.Number(2)
three = myokit.Number(3)
x = myokit.If(true, two, three)
self.assertEqual(x.eval(), 2)
self.assertEqual(x.condition(), true)
x = myokit.If(true, three, two)
self.assertEqual(x.eval(), 3)
x = myokit.If(false, two, three)
self.assertEqual(x.eval(), 3)
self.assertEqual(x.condition(), false)
x = myokit.If(false, three, two)
self.assertEqual(x.eval(), 2)
# Conversion to piecewise
x = myokit.If(true, two, three).piecewise()
self.assertIsInstance(x, myokit.Piecewise)
self.assertEqual(x.eval(), 2)
x = myokit.If(true, three, two).piecewise()
self.assertIsInstance(x, myokit.Piecewise)
self.assertEqual(x.eval(), 3)
x = myokit.If(false, two, three).piecewise()
self.assertIsInstance(x, myokit.Piecewise)
self.assertEqual(x.eval(), 3)
x = myokit.If(false, three, two).piecewise()
self.assertIsInstance(x, myokit.Piecewise)
self.assertEqual(x.eval(), 2)
def _ex_piecewise(self, e):
from sympy.logic.boolalg import BooleanTrue, BooleanFalse
args = []
n = len(e.args) - 1
for k, pair in enumerate(e.args):
expr, cond = pair
expr = self.ex(expr)
cond_is_true = False
if type(cond) == BooleanTrue:
cond_is_true = True
cond = myokit.Equal(myokit.Number(1), myokit.Number(1))
elif type(cond) == BooleanFalse: # pragma: no cover
# Cover pragma: SymPy currently optimises out BooleanFalse
cond = myokit.Equal(myokit.Number(0), myokit.Number(1))
else:
cond = self.ex(cond)
if k < n:
args.append(cond)
args.append(expr)
if cond_is_true:
args.append(expr)
else:
args.append(cond)
args.append(expr)
args.append(myokit.Number(0))
return myokit.Piecewise(*args)
def test_conditionals(self):
# Tests if and piecewise writing
a = myokit.Name('a')
b = myokit.Number(1)
c = myokit.Number(1)
cond1 = myokit.parse_expression('5 > 3')
cond2 = myokit.parse_expression('2 < 1')
ca = '<mi>a</mi>'
cb = '<mn>1.0</mn>'
cc = '<mn>1.0</mn>'
c1 = '<mrow><mn>5.0</mn><mo>></mo><mn>3.0</mn></mrow>'
c2 = '<mrow><mn>2.0</mn><mo><</mo><mn>1.0</mn></mrow>'
# If
x = myokit.If(cond1, a, b)
self.assertWrite(
x, '<piecewise>'
'<piece>' + ca + c1 + '</piece>'
'<otherwise>' + cb + '</otherwise>'
'</piecewise>')
# Piecewise
x = myokit.Piecewise(cond1, a, cond2, b, c)
self.assertWrite(
x, '<piecewise>'
'<piece>' + ca + c1 + '</piece>'
'<piece>' + cb + c2 + '</piece>'
'<otherwise>' + cc + '</otherwise>'
'</piecewise>')
def test_conditionals(self):
# Tests if and piecewise writing
a = myokit.Name('a')
b = myokit.Number(1)
cond1 = myokit.parse_expression('5 > 3')
cond2 = myokit.parse_expression('2 < 1')
c1 = '<apply><gt/><cn>5.0</cn><cn>3.0</cn></apply>'
c2 = '<apply><lt/><cn>2.0</cn><cn>1.0</cn></apply>'
# If
e = myokit.If(cond1, a, b)
x = (
'<piecewise>'
'<piece><ci>a</ci>' + c1 + '</piece>'
'<otherwise><cn>1.0</cn></otherwise>'
'</piecewise>'
)
self.assertWrite(e, x)
# Piecewise
e = myokit.Piecewise(cond1, a, cond2, b, myokit.Number(100))
x = (
'<piecewise>'
'<piece><ci>a</ci>' + c1 + '</piece>'
'<piece><cn>1.0</cn>' + c2 + '</piece>'
'<otherwise><cn>100.0</cn></otherwise>'
'</piecewise>'
)
self.assertWrite(e, x)
def equal(self):
"""
Test of __eq__ operators
"""
a1 = myokit.Number(4)
a2 = myokit.Number(5)
self.assertEqual(a1, a1)
self.assertEqual(a1, myokit.Number(4))
self.assertEqual(a1, myokit.Number(4.0))
self.assertNotEqual(a1, a2)
b1 = myokit.Name('test')
b2 = myokit.Name('tost')
self.assertEqual(b1, b1)
self.assertNotEqual(b1, b2)
c1 = myokit.PrefixPlus(a1)
c2 = myokit.PrefixPlus(a1)
self.assertEqual(c1, c1)
self.assertEqual(c1, c2)
c2 = myokit.PrefixPlus(a2)
self.assertNotEqual(c1, c2)
d1 = myokit.Plus(a1, a2)
d2 = myokit.Plus(a1, a2)
self.assertEqual(d1, d1)
self.assertEqual(d1, d2)
d2 = myokit.Plus(a2, a1)
self.assertNotEqual(d2, d1)
e1 = myokit.Sqrt(a1)
e2 = myokit.Sqrt(a1)
self.assertEqual(e1, e1)
self.assertEqual(e1, e2)
e2 = myokit.Sqrt(a2)
self.assertNotEqual(e1, e2)
def polynomial(self):
"""
Test of Polynomial class
"""
x = myokit.Name('x')
c = [
myokit.Number(5),
myokit.Number(4),
myokit.Number(3),
myokit.Number(2)
]
p = myokit.Polynomial(x, *c)
self.assertEqual(p.eval(subst={x: 0}), 5)
self.assertEqual(p.eval(subst={x: 1}), 14)
self.assertEqual(p.eval(subst={x: 2}), 41)
self.assertEqual(p.eval(subst={x: -1}), 2)
self.assertEqual(p.eval(subst={x: 0.5}), 8)
q = p.tree()
self.assertNotEqual(p, q)
for i in [-1, 0, 0.5, 1, 2]:
s = {x: i}
self.assertEqual(p.eval(subst=s), q.eval(subst=s))
q = p.tree(horner=False)
self.assertNotEqual(p, q)
for i in [-1, 0, 0.5, 1, 2]:
s = {x: i}
self.assertEqual(p.eval(subst=s), q.eval(subst=s))
def number_factory(value, element):
# Numbers not connected to a cn
if element is None:
return myokit.Number(value, myokit.units.dimensionless)
# Get units attribute
try:
units = element.attrib[attr]
except KeyError:
raise CellMLParsingError(
'Numbers inside MathML must define a cellml:units'
' attribute (4.4.3.1).', element)
# Find units in component
try:
units = component.find_units(units)
units = units.myokit_unit()
except myokit.formats.cellml.v1.UnitsError as e:
warnings.warn(
'The units "' + str(units) + '" (referenced inside a'
' MathML equation) are not supported and have been'
' replaced by `dimensionless`. (' + str(e) + ')')
units = myokit.units.dimensionless
except myokit.formats.cellml.v1.CellMLError:
raise CellMLParsingError(
'Unknown unit "' + str(units) + '" referenced inside a'
' MathML equation (4.4.3.2).', element)
# Create and return
return myokit.Number(value, units)
def test_name_and_numbers(self):
# Test name and number writing
self.assertWrite(myokit.Name('a'), '<ci>a</ci>')
# Number without unit
self.assertWrite(myokit.Number(1), '<cn>1.0</cn>')
# Number with unit
# Unit isn't exported by default!
self.assertWrite(myokit.Number('12', 'pF'), '<cn>12.0</cn>')
def test_arithmetic_unary(self):
# Tests writing prefix operators
# Prefix plus
m = myokit.PrefixPlus(myokit.Number(1))
x = '<apply><plus/><cn>1.0</cn></apply>'
self.assertWrite(m, x)
# Prefix minus
m = myokit.PrefixMinus(myokit.Number(1))
x = '<apply><minus/><cn>1.0</cn></apply>'
self.assertWrite(m, x)
def test_arithmetic_unary(self):
# Tests parsing basic arithmetic operators
# Prefix plus
e = myokit.PrefixPlus(myokit.Number(1))
x = '<apply><plus/><cn>1.0</cn></apply>'
self.assertEqual(self.p(x), e)
# Prefix minus
e = myokit.PrefixMinus(myokit.Number(1))
x = '<apply><minus/><cn>1.0</cn></apply>'
self.assertEqual(self.p(x), e)
def parse_mathml_number(node, logger=None):
"""
Parses a mathml <cn> tag to a :class:`myokit.Number`.
The attribute ``node`` must be a DOM node representing a <cn> tag using the
``xml.dom.Node`` interface.
If the argument ``logger`` is given this will be used to log messages to,
assuming the :class:`myokit.TextLogger` interface.
"""
kind = node.getAttribute('type')
if kind == '':
# Default type
kind = 'real'
if kind == 'real':
# Float, specified as 123.123 (no exponent!)
# May be in a different base than 10
base = node.getAttribute('base')
if base:
raise MathMLError('BASE conversion for reals is not supported')
return myokit.Number(str(node.firstChild.data).strip())
elif kind == 'integer':
# Integer in any given base
base = node.getAttribute('base')
numb = str(node.firstChild.data).strip()
if base:
v = int(numb, base)
if logger:
logger.log('Converted from ' + str(numb) + ' to ' + str(v))
numb = v
return myokit.Number(numb)
elif kind == 'double':
# Floating point (positive, negative, exponents, etc)
return myokit.Number(numb)
elif kind == 'e-notation':
# 1<sep />3 = 1e3
sig = str(node.firstChild.data.strip())
exp = str(node.firstChild.nextSibling.nextSibling.data).strip()
numb = sig + 'e' + exp
if logger:
logger.log('Converted ' + sig + 'e' + str(exp) + '.')
return myokit.Number(numb)
elif kind == 'rational':
# 1<sep />3 = 1 / 3
num = str(node.firstChild.data.strip())
den = str(node.firstChild.nextSibling.nextSibling.data).strip()
numb = str(float(num) / float(den))
if logger:
logger.log('Converted ' + num + ' / ' + den + ' to ' + numb)
return myokit.Number(numb)
else:
raise MathMLError('Unsupported <cn> type: ' + kind)
def _test_maths(self, version):
# Test maths is written (in selected ``version``)
# Create model
m1 = cellml.Model('m', version)
c1 = m1.add_component('c')
p1 = c1.add_variable('p', 'mole')
p1.set_initial_value(2)
q1 = c1.add_variable('q', 'dimensionless')
r1 = c1.add_variable('r', 'second')
r1.set_initial_value(0.1)
t1 = c1.add_variable('t', 'second')
m1.set_variable_of_integration(t1)
# Add component without maths
d1 = m1.add_component('d')
s1 = d1.add_variable('s', 'volt')
s1.set_initial_value(1.23)
# Add two equations
# Note: Numbers without units become dimensionless in CellML
eq1 = myokit.Equation(
myokit.Name(q1),
myokit.Plus(myokit.Number(3, myokit.units.mole), myokit.Name(p1)))
er1 = myokit.Equation(myokit.Derivative(myokit.Name(r1)),
myokit.Power(myokit.Name(q1), myokit.Number(2)))
q1.set_equation(eq1)
r1.set_equation(er1)
# Write and read
xml = cellml.write_string(m1)
m2 = cellml.parse_string(xml)
# Check results
p2, q2, r2, s2 = m2['c']['p'], m2['c']['q'], m2['c']['r'], m2['d']['s']
subst = {
myokit.Name(p1): myokit.Name(p2),
myokit.Name(q1): myokit.Name(q2),
myokit.Name(r1): myokit.Name(r2),
}
eq2 = eq1.clone(subst)
er2 = er1.clone(subst)
self.assertEqual(q2.equation(), eq2)
self.assertEqual(r2.equation(), er2)
self.assertEqual(s2.initial_value(),
myokit.Number(1.23, myokit.units.volt))
self.assertFalse(p2.is_state())
self.assertFalse(q2.is_state())
self.assertTrue(r2.is_state())
self.assertFalse(s2.is_state())
self.assertIs(m2.variable_of_integration(), m2['c']['t'])
def test_name_and_numbers(self):
# Test name and number writing
self.assertWrite(myokit.Name('a'), '<ci>a</ci>')
# Number without unit
self.assertWrite(myokit.Number(0), '<cn>0.0</cn>')
self.assertWrite(myokit.Number(1), '<cn>1.0</cn>')
# Number with unit
# Unit isn't exported by default!
self.assertWrite(myokit.Number('-12', 'pF'), '<cn>-12.0</cn>')
# Number with e notation (note that Python will turn e.g. 1e3 into
# 1000, so must pick tests carefully)
self.assertWrite(myokit.Number(1e3), '<cn>1000.0</cn>')
self.assertWrite(myokit.Number(1e-3), '<cn>0.001</cn>')
self.assertWrite(
myokit.Number(1e-6),
'<cn type="e-notation">1<sep/>-6</cn>')
self.assertWrite(
myokit.Number(2.3e24),
'<cn type="e-notation">2.3<sep/>24</cn>')
# myokit.float.str(1.23456789) = 1.23456788999999989e+00
self.assertWrite(
myokit.Number(1.23456789), '<cn>1.23456788999999989</cn>')
def test_name_and_numbers(self):
# Test name and number writing
# Name
self.assertWrite(myokit.Name(self.avar), '<mi>c.a</mi>')
# Number with unit
self.assertWrite(myokit.Number(12, 'pF'), '<mn>12.0</mn>')
# Number without unit
self.assertWrite(myokit.Number(1), '<mn>1.0</mn>')
# E-notation is allowed in presentation MathML
self.assertWrite(myokit.Number(1e-6), '<mn>1e-06</mn>')
self.assertWrite(myokit.Number(1e24), '<mn>1e+24</mn>')
def test_remove_component(self):
# Test the removal of a component.
# Create model
m = myokit.Model('LotkaVolterra')
# Simplest case
X = m.add_component('X')
self.assertEqual(m.count_components(), 1)
m.remove_component(X)
self.assertEqual(m.count_components(), 0)
self.assertRaises(KeyError, m.remove_component, X)
# Test if orphaned
self.assertIsNone(X.parent())
# Re-adding
self.assertEqual(m.count_components(), 0)
X = m.add_component('X')
self.assertEqual(m.count_components(), 1)
# With internal variables and string name
a = X.add_variable('a')
a.set_rhs(myokit.Number(4))
b = X.add_variable('b')
b.set_rhs(myokit.Name(a))
m.remove_component('X')
self.assertEqual(m.count_components(), 0)
# With dependencies from another component
X = m.add_component('X')
a = X.add_variable('a')
a.set_rhs(myokit.Number(45))
b = X.add_variable('b')
b.set_rhs(myokit.Name(b))
Y = m.add_component('Y')
c = Y.add_variable('c')
c.set_rhs(myokit.Name(a))
d = Y.add_variable('d')
d.set_rhs(myokit.Name(c))
self.assertEqual(m.count_components(), 2)
self.assertRaises(myokit.IntegrityError, m.remove_component, X)
self.assertEqual(m.count_components(), 2)
# In the right order...
m.remove_component(Y)
self.assertEqual(m.count_components(), 1)
m.remove_component(X)
self.assertEqual(m.count_components(), 0)
def TT_HF_Lu(cell_type = None):
m = myokit.load_model('tentusscher-2006.mmt')
# INa: -40%
ina = m.get('ina.INa')
ina.set_rhs(myokit.Multiply(myokit.Number(0.6), ina.rhs()))
# Ito: -36% (not -64% like other papers misquote)
ito = m.get('ito.ITo')
ito.set_rhs(myokit.Multiply(myokit.Number(0.64), ito.rhs()))
# IK1: -20%
ik1 = m.get('ik1.IK1')
ik1.set_rhs(myokit.Multiply(myokit.Number(0.8), ik1.rhs()))
# INaK: -42%
inak = m.get('inak.INaK')
inak.set_rhs(myokit.Multiply(myokit.Number(0.58), inak.rhs()))
# ICab: +53%
icab = m.get('icab.ICaB')
icab.set_rhs(myokit.Multiply(myokit.Number(1.53), icab.rhs()))
# INCX: +65%
incx = m.get('inaca.INaCa')
incx.set_rhs(myokit.Multiply(myokit.Number(1.65), incx.rhs()))
# SR calcium pump current : -45%
iup = m.get('calcium.i_up')
iup.set_rhs(myokit.Multiply(myokit.Number(0.55), iup.rhs()))
## Can I call this serca?
# ILeak: 0%
ileak = m.get('calcium.i_leak')
ileak.set_rhs(myokit.Multiply(myokit.Number(1.0), ileak.rhs()))
#Jrel ??: -23%
jrel = m.get('calcium.i_rel') # Not sure this is the right parameter
jrel.set_rhs(myokit.Multiply(myokit.Number(0.77), jrel.rhs()))
#Iks: -50%
iks = m.get('iks.IKs')
iks.set_rhs(myokit.Multiply(myokit.Number(0.5), iks.rhs()))
return(m)
def simulate_aps(scales, model_file, beats=2, cl=1000, prepace=100,
stimulate=True):
"""
Generate APs using the given scalings.
"""
# Load model
model = myokit.load_model(model_file)
# Apply scalings
for var in scales:
scale = scales[var]
v = model.get(var)
v.set_rhs(myokit.Multiply(myokit.Number(scale), v.rhs()))
# Simulate with modified model
sim = myokit.Simulation(model)
# Add stimulus
if stimulate:
protocol = myokit.pacing.blocktrain(period=cl, duration=1,
offset=50)
sim.set_protocol(protocol)
# Pre-pace for some beats
sim.pre(prepace * cl)
# Log some beats and return
log = ['engine.time', 'membrane.V']
log = ['environment.time', 'membrane.V']
log = ['membrane.V']
return sim.run(beats * cl, log=log, log_interval=DT).npview()
def test_parse_mathml_string(self):
# Test :meth:`mathml.parse_mathml_string()`.
self.assertEqual(
mathml.parse_mathml_string('<apply><cn>1.0</cn></apply>'),
myokit.Number(1)
)
def test_trig_basic(self):
# Test writing basic trig functions
b = myokit.Number('12', 'pF')
cb = '<mn>12.0</mn>'
# Sin
x = myokit.Sin(b)
self.assertWrite(
x, '<mrow><mi>sin</mi><mfenced>' + cb + '</mfenced></mrow>')
# Cos
x = myokit.Cos(b)
self.assertWrite(
x, '<mrow><mi>cos</mi><mfenced>' + cb + '</mfenced></mrow>')
# Tan
x = myokit.Tan(b)
self.assertWrite(
x, '<mrow><mi>tan</mi><mfenced>' + cb + '</mfenced></mrow>')
# ASin
x = myokit.ASin(b)
self.assertWrite(
x, '<mrow><mi>arcsin</mi><mfenced>' + cb + '</mfenced></mrow>')
# ACos
x = myokit.ACos(b)
self.assertWrite(
x, '<mrow><mi>arccos</mi><mfenced>' + cb + '</mfenced></mrow>')
# ATan
x = myokit.ATan(b)
self.assertWrite(
x, '<mrow><mi>arctan</mi><mfenced>' + cb + '</mfenced></mrow>')
def test_read_write(self):
# Test using the read() and write() methods
try:
import sympy as sp
except ImportError:
print('Sympy not found, skipping test.')
return
# Test writing and reading with a model
a = self._a
ca = sp.Symbol('c.a')
self.assertEqual(mypy.write(a), ca)
self.assertEqual(mypy.read(ca, self._model), a)
# Test doing it again, with a different model
m = myokit.Model()
a = m.add_component('cc').add_variable('aa')
a = myokit.Name(a)
ca = sp.Symbol('cc.aa')
self.assertEqual(mypy.write(a), ca)
self.assertEqual(mypy.read(ca, m), a)
# Test reading without a model
b = myokit.Number('12')
cb = sp.Float(12)
self.assertEqual(mypy.write(b), cb)
self.assertEqual(mypy.read(cb), b)
def test_inequalities(self):
# Test writing (in)equalities
a = myokit.Name(self.avar)
b = myokit.Number('12', 'pF')
ca = '<mi>c.a</mi>'
cb = '<mn>12.0</mn>'
# Equal
x = myokit.Equal(a, b)
self.assertWrite(x, '<mrow>' + ca + '<mo>==</mo>' + cb + '</mrow>')
# NotEqual
x = myokit.NotEqual(a, b)
self.assertWrite(x, '<mrow>' + ca + '<mo>!=</mo>' + cb + '</mrow>')
# More
x = myokit.More(a, b)
self.assertWrite(x, '<mrow>' + ca + '<mo>></mo>' + cb + '</mrow>')
# Less
x = myokit.Less(a, b)
self.assertWrite(x, '<mrow>' + ca + '<mo><</mo>' + cb + '</mrow>')
# MoreEqual
# Named version ≥ is not output, shows decimal code instead
x = myokit.MoreEqual(a, b)
self.assertWrite(x,
'<mrow>' + ca + '<mo>≥</mo>' + cb + '</mrow>')
# LessEqual
# Named version ≤ is not output, shows decimal code instead
x = myokit.LessEqual(a, b)
self.assertWrite(x,
'<mrow>' + ca + '<mo>≤</mo>' + cb + '</mrow>')
def test_functions(self):
# Test printing functions
a = myokit.Name(self.avar)
b = myokit.Number('12', 'pF')
ca = '<ci>a</ci>'
cb = ('<cn cellml:units="picofarad">12.0</cn>')
# Power
x = myokit.Power(a, b)
self.assertWrite(x, '<apply><power/>' + ca + cb + '</apply>')
# Sqrt
x = myokit.Sqrt(b)
self.assertWrite(x, '<apply><root/>' + cb + '</apply>')
# Exp
x = myokit.Exp(a)
self.assertWrite(x, '<apply><exp/>' + ca + '</apply>')
# Floor
x = myokit.Floor(b)
self.assertWrite(x, '<apply><floor/>' + cb + '</apply>')
# Ceil
x = myokit.Ceil(b)
self.assertWrite(x, '<apply><ceiling/>' + cb + '</apply>')
# Abs
x = myokit.Abs(b)
self.assertWrite(x, '<apply><abs/>' + cb + '</apply>')
def test_inequalities(self):
# Tests printing inequalities
a = myokit.Name(self.avar)
b = myokit.Number('12', 'pF')
ca = '<ci>a</ci>'
cb = ('<cn cellml:units="picofarad">12.0</cn>')
# Equal
x = myokit.Equal(a, b)
self.assertWrite(x, '<apply><eq/>' + ca + cb + '</apply>')
# NotEqual
x = myokit.NotEqual(a, b)
self.assertWrite(x, '<apply><neq/>' + ca + cb + '</apply>')
# More
x = myokit.More(a, b)
self.assertWrite(x, '<apply><gt/>' + ca + cb + '</apply>')
# Less
x = myokit.Less(a, b)
self.assertWrite(x, '<apply><lt/>' + ca + cb + '</apply>')
# MoreEqual
x = myokit.MoreEqual(a, b)
self.assertWrite(x, '<apply><geq/>' + ca + cb + '</apply>')
# LessEqual
x = myokit.LessEqual(a, b)
self.assertWrite(x, '<apply><leq/>' + ca + cb + '</apply>')
def test_arithmetic(self):
# Test basic arithmetic
a = myokit.Name(self.avar)
b = myokit.Number('12', 'pF')
ca = '<ci>a</ci>'
cb = ('<cn cellml:units="picofarad">12.0</cn>')
# Prefix plus
x = myokit.PrefixPlus(b)
self.assertWrite(x, '<apply><plus/>' + cb + '</apply>')
# Prefix minus
x = myokit.PrefixMinus(b)
self.assertWrite(x, '<apply><minus/>' + cb + '</apply>')
# Plus
x = myokit.Plus(a, b)
self.assertWrite(x, '<apply><plus/>' + ca + cb + '</apply>')
# Minus
x = myokit.Minus(a, b)
self.assertWrite(x, '<apply><minus/>' + ca + cb + '</apply>')
# Multiply
x = myokit.Multiply(a, b)
self.assertWrite(x, '<apply><times/>' + ca + cb + '</apply>')
# Divide
x = myokit.Divide(a, b)
self.assertWrite(x, '<apply><divide/>' + ca + cb + '</apply>')
def test_overdefined(self):
# Tests for overdefined variables
# Initial value and equation for state
x = ('<component name="a">'
' <variable name="time" units="dimensionless" />'
' <variable name="x" units="dimensionless" initial_value="2" />'
' <math xmlns="http://www.w3.org/1998/Math/MathML">')
a = (' <apply>'
' <eq />'
' <apply>'
' <diff/>'
' <bvar>'
' <ci>time</ci>'
' </bvar>'
' <ci>x</ci>'
' </apply>'
' <cn cellml:units="dimensionless">3</cn>'
' </apply>')
z = (' </math>'
'</component>')
m = self.parse(x + a + z)
v = m['a']['x']
self.assertEqual(v.rhs(), myokit.Number(3))
self.assertEqual(v.initial_value(), 2)
# Initial value and equation for a non-state
b = (' <apply>'
' <eq /><ci>x</ci><cn cellml:units="dimensionless">2</cn>'
' </apply>')
self.assertBad(x + b + z, 'Initial value and a defining equation')
# Two equations
self.assertBad(x + a + a + z, 'Two defining equations')
def test_variable(self):
# Tests writing of variables
m1 = cellml.Model('m')
c = m1.add_component('c')
p = c.add_variable('p', 'mole')
q = c.add_variable('q', 'kelvin', interface='public')
r = c.add_variable('r', 'ampere', interface='private')
p.set_initial_value(1)
with WarningCollector():
xml = cellml.write_string(m1)
m2 = cellml.parse_string(xml)
p, q, r = m2['c']['p'], m2['c']['q'], m2['c']['r']
self.assertEqual(p.units().name(), 'mole')
self.assertEqual(q.units().name(), 'kelvin')
self.assertEqual(r.units().name(), 'ampere')
self.assertEqual(p.interface(), 'none')
self.assertEqual(q.interface(), 'public')
self.assertEqual(r.interface(), 'private')
self.assertEqual(p.initial_value(),
myokit.Number(1, myokit.units.mole))
self.assertEqual(q.initial_value(), None)
self.assertEqual(r.initial_value(), None)
def test_units(self):
# Test writing of units
u1 = myokit.parse_unit('kg*m^2/mole^3 (0.123)')
m1 = cellml.Model('mmm')
m1.add_units('flibbit', u1)
m1.add_units('special_volt', myokit.units.Volt)
d = m1.add_component('ddd')
q = d.add_variable('q', 'flibbit')
q.set_equation(myokit.Equation(myokit.Name(q), myokit.Number(2, u1)))
xml = cellml.write_string(m1)
m2 = cellml.parse_string(xml)
q = m2['ddd']['q']
self.assertEqual(q.units().name(), 'flibbit')
self.assertEqual(q.units().myokit_unit(), u1)
self.assertEqual(
m2.find_units('special_volt').myokit_unit(), myokit.units.volt)
# Dimensionless units with a multiplier
u1 = myokit.parse_unit('1 (0.123)')
m1 = cellml.Model('mmm')
m1.add_units('flibbit', u1)
xml = cellml.write_string(m1)
m2 = cellml.parse_string(xml)
u2 = m2.find_units('flibbit')
u2 = u2.myokit_unit()
self.assertEqual(u1, u2)
def test_oxmeta_annotations(self):
# Tests if oxmeta annotations are written
# Create mini model
m = cellml.Model('m')
c = m.add_component('c')
v = c.add_variable('v', 'volt')
v.set_rhs(myokit.Number(0, myokit.units.volt))
# Test no RDF is written without oxmeta or cmeta
xml = cellml.write_string(m)
self.assertNotIn(b'rdf:RDF', xml)
v.meta['oxmeta'] = 'membrane_voltage'
xml = cellml.write_string(m)
self.assertNotIn(b'rdf:RDF', xml)
del (v.meta['oxmeta'])
v.set_cmeta_id('vvv')
xml = cellml.write_string(m)
self.assertNotIn(b'rdf:RDF', xml)
# Test it is written if both are set
v.meta['oxmeta'] = 'membrane_voltage'
xml = cellml.write_string(m)
self.assertIn(b'rdf:RDF', xml)
# Test reading it again with the parser
m2 = cellml.parse_string(xml)
v2 = m2['c']['v']
self.assertEqual(v2.cmeta_id(), 'vvv')
self.assertIn('oxmeta', v2.meta)
self.assertEqual(v2.meta['oxmeta'], 'membrane_voltage')