def test_every_thing_should_be_ok_on_petit_probleme_lp():
"""Testing the problem_generator function"""
prob_list = [os.path.join('..', 'data', 'petit_probleme.lp')]
cons_to_vary = ['demand_0', 'demand_7', 'demand_8']
vars_to_vary = None
Number = 10
Deviation = 0.1
data = problem_generator(prob_list, Number, Deviation, cons_to_vary,
vars_to_vary, Xpress_Problem_Factory())
rhs_list = data.get_RHS()
solutions = data.get_solutions()
assert len(rhs_list) == len(solutions) == Number and len(rhs_list[0]) == len(cons_to_vary), "" \
"Error in problem generator function."
def test_generation():
"""
Test generation on petit_probleme.lp, varying constraints demand_0, demand_7 and demand_8
one by one.
"""
cons_list = ["demand_0", "demand_7", "demand_8"]
Number = 10000
Deviation = 1.5
prob_list = ["petit_probleme.lp"]
vars_to_vary = None
for elem in cons_list:
cons_to_vary = [elem]
data = problem_generator(prob_list,
Number,
Deviation,
cons_to_vary,
vars_to_vary,
Xpress_Problem_Factory(),
save=True,
single_file=True)
assert True
def test_preprocessing_postprocessing_linearmax():
prob_list = ["petit_probleme.lp"]
cons_to_vary = ["demand_0"]
vars_to_vary = None
number = 100
deviation = 0.1
data = problem_generator(prob_list,
number,
deviation,
cons_to_vary,
vars_to_vary,
Xpress_Problem_Factory(),
save=False)
test_data = data.copy()
processor = SolutionProcessorLinearMax()
processor.compute_parameters(test_data)
processor.pre_process(test_data)
processed_solutions = test_data.get_solutions().copy()
output_test = OutputData(processed_solutions, processed_solutions)
processor.post_process(output_test)
solutions = data.get_solutions()
test_solutions = output_test.get_solutions()
size = test_data.size()
for i in range(size):
assert np.isclose(test_solutions[i],
solutions[i],
atol=1e-06,
rtol=1e-06)
def test_read_problem_from_file_fails():
with pytest.raises(xp.SolverError):
prob = Xpress_Problem_Factory().read_problem_from_file(
"petit_probleme.lp")
def test_get_constraints_names():
prob = Xpress_Problem_Factory().read_problem_from_file(
os.path.join("..", "data", "petit_probleme.lp"))
name_list = prob.get_constraint_names()
assert (name_list[0], name_list[23], name_list[32]) == ("FlotMax_0,6", "demand_0", "flot_9"), "" \
"Constraint name extraction failed, verify if solver has added spaces at the end of the variable names."
def test_read_problem_from_file():
prob = Xpress_Problem_Factory().read_problem_from_file(
os.path.join("..", "data", "petit_probleme.lp"))
assert isinstance(prob,
Xpress_problem), "problem creation from file failed."