def test_read_from_lp_file(self):
"""test read lp file"""
try:
q_p = QuadraticProgram()
with self.assertRaises(FileNotFoundError):
q_p.read_from_lp_file('')
with self.assertRaises(FileNotFoundError):
q_p.read_from_lp_file('no_file.txt')
lp_file = self.get_resource_path(
path.join('resources', 'test_quadratic_program.lp'))
q_p.read_from_lp_file(lp_file)
self.assertEqual(q_p.name, 'my problem')
self.assertEqual(q_p.get_num_vars(), 3)
self.assertEqual(q_p.get_num_binary_vars(), 1)
self.assertEqual(q_p.get_num_integer_vars(), 1)
self.assertEqual(q_p.get_num_continuous_vars(), 1)
self.assertEqual(q_p.get_num_linear_constraints(), 3)
self.assertEqual(q_p.get_num_quadratic_constraints(), 3)
self.assertEqual(q_p.variables[0].name, 'x')
self.assertEqual(q_p.variables[0].vartype, Variable.Type.BINARY)
self.assertEqual(q_p.variables[0].lowerbound, 0)
self.assertEqual(q_p.variables[0].upperbound, 1)
self.assertEqual(q_p.variables[1].name, 'y')
self.assertEqual(q_p.variables[1].vartype, Variable.Type.INTEGER)
self.assertEqual(q_p.variables[1].lowerbound, -1)
self.assertEqual(q_p.variables[1].upperbound, 5)
self.assertEqual(q_p.variables[2].name, 'z')
self.assertEqual(q_p.variables[2].vartype,
Variable.Type.CONTINUOUS)
self.assertEqual(q_p.variables[2].lowerbound, -1)
self.assertEqual(q_p.variables[2].upperbound, 5)
self.assertEqual(q_p.objective.sense,
QuadraticObjective.Sense.MINIMIZE)
self.assertEqual(q_p.objective.constant, 1)
self.assertDictEqual(q_p.objective.linear.to_dict(use_name=True), {
'x': 1,
'y': -1,
'z': 10
})
self.assertDictEqual(
q_p.objective.quadratic.to_dict(use_name=True), {
('x', 'x'): 0.5,
('y', 'z'): -1
})
cst = q_p.linear_constraints
self.assertEqual(cst[0].name, 'lin_eq')
self.assertDictEqual(cst[0].linear.to_dict(use_name=True), {
'x': 1,
'y': 2
})
self.assertEqual(cst[0].sense, Constraint.Sense.EQ)
self.assertEqual(cst[0].rhs, 1)
self.assertEqual(cst[1].name, 'lin_leq')
self.assertDictEqual(cst[1].linear.to_dict(use_name=True), {
'x': 1,
'y': 2
})
self.assertEqual(cst[1].sense, Constraint.Sense.LE)
self.assertEqual(cst[1].rhs, 1)
self.assertEqual(cst[2].name, 'lin_geq')
self.assertDictEqual(cst[2].linear.to_dict(use_name=True), {
'x': 1,
'y': 2
})
self.assertEqual(cst[2].sense, Constraint.Sense.GE)
self.assertEqual(cst[2].rhs, 1)
cst = q_p.quadratic_constraints
self.assertEqual(cst[0].name, 'quad_eq')
self.assertDictEqual(cst[0].linear.to_dict(use_name=True), {
'x': 1,
'y': 1
})
self.assertDictEqual(cst[0].quadratic.to_dict(use_name=True), {
('x', 'x'): 1,
('y', 'z'): -1,
('z', 'z'): 2
})
self.assertEqual(cst[0].sense, Constraint.Sense.EQ)
self.assertEqual(cst[0].rhs, 1)
self.assertEqual(cst[1].name, 'quad_leq')
self.assertDictEqual(cst[1].linear.to_dict(use_name=True), {
'x': 1,
'y': 1
})
self.assertDictEqual(cst[1].quadratic.to_dict(use_name=True), {
('x', 'x'): 1,
('y', 'z'): -1,
('z', 'z'): 2
})
self.assertEqual(cst[1].sense, Constraint.Sense.LE)
self.assertEqual(cst[1].rhs, 1)
self.assertEqual(cst[2].name, 'quad_geq')
self.assertDictEqual(cst[2].linear.to_dict(use_name=True), {
'x': 1,
'y': 1
})
self.assertDictEqual(cst[2].quadratic.to_dict(use_name=True), {
('x', 'x'): 1,
('y', 'z'): -1,
('z', 'z'): 2
})
self.assertEqual(cst[2].sense, Constraint.Sense.GE)
self.assertEqual(cst[2].rhs, 1)
except MissingOptionalLibraryError as ex:
self.skipTest(str(ex))
except RuntimeError as ex:
self.fail(str(ex))
def test_variables_handling(self):
""" test add variables """
quadratic_program = QuadraticProgram()
self.assertEqual(quadratic_program.get_num_vars(), 0)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 0)
self.assertEqual(quadratic_program.get_num_binary_vars(), 0)
self.assertEqual(quadratic_program.get_num_integer_vars(), 0)
x_0 = quadratic_program.continuous_var()
self.assertEqual(x_0.name, 'x0')
self.assertEqual(x_0.lowerbound, 0)
self.assertEqual(x_0.upperbound, INFINITY)
self.assertEqual(x_0.vartype, Variable.Type.CONTINUOUS)
self.assertEqual(quadratic_program.get_num_vars(), 1)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 1)
self.assertEqual(quadratic_program.get_num_binary_vars(), 0)
self.assertEqual(quadratic_program.get_num_integer_vars(), 0)
x_1 = quadratic_program.continuous_var(name='x1',
lowerbound=5,
upperbound=10)
self.assertEqual(x_1.name, 'x1')
self.assertEqual(x_1.lowerbound, 5)
self.assertEqual(x_1.upperbound, 10)
self.assertEqual(x_1.vartype, Variable.Type.CONTINUOUS)
self.assertEqual(quadratic_program.get_num_vars(), 2)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 2)
self.assertEqual(quadratic_program.get_num_binary_vars(), 0)
self.assertEqual(quadratic_program.get_num_integer_vars(), 0)
x_2 = quadratic_program.binary_var()
self.assertEqual(x_2.name, 'x2')
self.assertEqual(x_2.lowerbound, 0)
self.assertEqual(x_2.upperbound, 1)
self.assertEqual(x_2.vartype, Variable.Type.BINARY)
self.assertEqual(quadratic_program.get_num_vars(), 3)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 2)
self.assertEqual(quadratic_program.get_num_binary_vars(), 1)
self.assertEqual(quadratic_program.get_num_integer_vars(), 0)
x_3 = quadratic_program.binary_var(name='x3')
self.assertEqual(x_3.name, 'x3')
self.assertEqual(x_3.lowerbound, 0)
self.assertEqual(x_3.upperbound, 1)
self.assertEqual(x_3.vartype, Variable.Type.BINARY)
self.assertEqual(quadratic_program.get_num_vars(), 4)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 2)
self.assertEqual(quadratic_program.get_num_binary_vars(), 2)
self.assertEqual(quadratic_program.get_num_integer_vars(), 0)
x_4 = quadratic_program.integer_var()
self.assertEqual(x_4.name, 'x4')
self.assertEqual(x_4.lowerbound, 0)
self.assertEqual(x_4.upperbound, INFINITY)
self.assertEqual(x_4.vartype, Variable.Type.INTEGER)
self.assertEqual(quadratic_program.get_num_vars(), 5)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 2)
self.assertEqual(quadratic_program.get_num_binary_vars(), 2)
self.assertEqual(quadratic_program.get_num_integer_vars(), 1)
x_5 = quadratic_program.integer_var(name='x5',
lowerbound=5,
upperbound=10)
self.assertEqual(x_5.name, 'x5')
self.assertEqual(x_5.lowerbound, 5)
self.assertEqual(x_5.upperbound, 10)
self.assertEqual(x_5.vartype, Variable.Type.INTEGER)
self.assertEqual(quadratic_program.get_num_vars(), 6)
self.assertEqual(quadratic_program.get_num_continuous_vars(), 2)
self.assertEqual(quadratic_program.get_num_binary_vars(), 2)
self.assertEqual(quadratic_program.get_num_integer_vars(), 2)
with self.assertRaises(QiskitOptimizationError):
quadratic_program.continuous_var(name='x0')
with self.assertRaises(QiskitOptimizationError):
quadratic_program.binary_var(name='x0')
with self.assertRaises(QiskitOptimizationError):
quadratic_program.integer_var(name='x0')
variables = [x_0, x_1, x_2, x_3, x_4, x_5]
for i, x in enumerate(variables):
y = quadratic_program.get_variable(i)
z = quadratic_program.get_variable(x.name)
self.assertEqual(x.name, y.name)
self.assertEqual(x.name, z.name)
self.assertDictEqual(quadratic_program.variables_index,
{'x' + str(i): i
for i in range(6)})