def test_simple(self):
qm = QM()
a = qm.add_variable('SPIN', 'a')
qm.set_linear(a, 1.5)
qm.change_vartype('BINARY', a)
self.assertEqual(qm.energy({a: 1}), 1.5)
self.assertEqual(qm.energy({a: 0}), -1.5)
self.assertIs(qm.vartype(a), dimod.BINARY)
def test_triangle(self):
qm = QM()
qm.add_variables_from('SPIN', 'rstu')
qm.add_variable('BINARY', 'x')
qm.add_variable('INTEGER', 'i')
qm.quadratic['sx'] = 5
qm.quadratic['si'] = -3
qm.quadratic['xi'] = 23
qm.quadratic['ti'] = -7
qm.quadratic['xu'] = 3
qm.quadratic['rs'] = -12
qm.offset = 1.5
qm.linear['r'] = 5
qm.linear['x'] = -4
qm.linear['i'] = .25
new = qm.spin_to_binary(inplace=False)
rng = np.random.default_rng(42)
for _ in range(10):
sample = {}
for v in qm.variables:
if qm.vartype(v) == dimod.BINARY:
sample[v] = rng.choice((0, 1))
elif qm.vartype(v) == dimod.SPIN:
sample[v] = rng.choice((-1, 1))
elif qm.vartype(v) == dimod.INTEGER:
sample[v] = rng.choice(10)
energy = qm.energy(sample)
for v in qm.variables:
if qm.vartype(v) == dimod.SPIN:
sample[v] = (sample[v] + 1) // 2
self.assertEqual(energy, new.energy(sample))
self.assertIs(qm.vartype('r'), dimod.SPIN)
self.assertIs(new.vartype('r'), dimod.BINARY)