def test_ported_cr():
model = bgt.new()
Sf = bgt.new('Sf', name="Sf")
R = bgt.new("R", value=2)
zero = bgt.new("0")
ss = bgt.new("SS")
model.add(Sf, R, zero, ss)
connect(Sf, zero)
connect(R, zero)
connect(ss, zero)
bgt.expose(ss, 'A')
assert len(model.control_vars) == 1
ts, ps, cs = model._build_internal_basis_vectors()
assert len(cs) == 1
assert len(ps) == 7
assert len(ts) == 0
mapping, coords = inverse_coord_maps(ts, ps, cs)
assert len(coords) == 15
coords, mappings, lin_op, nl_op, conttr = model.system_model()
assert nl_op.is_zero_matrix
assert not conttr
assert model.constitutive_relations == [
sympy.sympify('e_0 - 2*f_0 - 2*u_0')
]
def test_re_con_rel():
Re = bgt.new("Re", library="BioChem", value={"R": 1, "T": 1})
coords = list(sympy.sympify("e_0,f_0,e_1,f_1,r"))
mappings, coords = inverse_coord_maps(*Re.basis_vectors)
assert mappings
assert coords
for r in get_relations_iterator(Re, mappings, coords):
assert r in [
({1: 1, 3: 1}, 0), ({1: 1}, sympy.sympify("-r*exp(e_0) + r*exp(e_1)"))
]
def test_cv_subs_state_func():
c = bgt.new("C", value=1)
se = bgt.new("Se")
r = bgt.new("R", value=1)
kcl = bgt.new("1")
bg = bgt.new()
bg.add([c, se, kcl, r])
connect(c, (kcl, kcl.non_inverting))
connect(r, (kcl, kcl.non_inverting))
connect(se, (kcl, kcl.non_inverting))
cv_s = {'u_0': ' -exp(-x_0)'}
subs = [(sympy.Symbol('u_0'), sympy.sympify('-exp(-x_0)'))]
mappings, coords = inverse_coord_maps(*bg.basis_vectors)
assert _generate_cv_substitutions(cv_s, mappings, coords) == subs
