def test_variable_interfaces(self):
from libcellml import Component, Model, Variable
m = Model()
c1 = Component("c1")
c2 = Component("c2")
v1 = Variable("v1")
v2 = Variable("v2")
c1.addVariable(v1)
c2.addVariable(v2)
m.addComponent(c1)
m.addComponent(c2)
Variable.addEquivalence(v1, v2)
m.fixVariableInterfaces()
self.assertEqual("public", v1.interfaceType())
self.assertEqual("public", v2.interfaceType())
# 7.d
# Create variable connections between these variables and their counterparts in the equations
# components. Validate, expecting errors related to missing or incorrect interface types.
Variable.addEquivalence(k_channel_parameters.variable('E_K'), k_channel_equations.variable('E_K'))
Variable.addEquivalence(k_channel_parameters.variable('g_K'), k_channel_equations.variable('g_K'))
Variable.addEquivalence(n_gate.variable('n'), n_gate_equations.variable('n'))
validator.validateModel(model)
print_issues(validator)
# 7.e
# Set the required interface types as listed by the validator. This can be done individually using the
# Variable.setInterfaceType() function, or automatically using the Model.fixVariableInterfaces()
# function. Validate again, expecting no validation errors.
model.fixVariableInterfaces()
validator.validateModel(model)
print_issues(validator)
# end 7.e
# If we were to analyse the model again now we would we still have the same set of errors
# as earlier as we haven't given a value to any of our parameters. We can use the
# Variable.setInitialValue() function to give these values to the following variables
# in the parameters components:
# - potassium channel parameters:
# - E_K = -87 [mV]
# - g_K = 36 [milliS_per_cm2]
# - n_gate parameters
# - n = 0.325 [dimensionless]
# 7.f
