def test_n_generations(self):
"""Test n iterations of the mechanism."""
c = modularcmaes.ModularCMAES(sum, 5, n_generations=5)
self.assertEqual(1, len(c.break_conditions))
for _ in range(5):
c.step()
self.assertTrue(any(c.break_conditions))
c = modularcmaes.ModularCMAES(sum, 5)
self.assertEqual(2, len(c.break_conditions))
def test_select_raises(self):
"""Test whether errors are produced correctly."""
c = modularcmaes.ModularCMAES(sum, 5, mirrored="mirrored pairwise")
c.mutate()
c.parameters.population = c.parameters.population[:3]
with self.assertRaises(ValueError):
c.select()
def test_tpa_threshold_cov_sequential(self):
c = modularcmaes.ModularCMAES(sum,
2,
threshold_convergence=True,
sequential=True,
step_size_adaptation='tpa',
budget=10).run()
self.assertLess(c.parameters.fopt, 0.)
def test_local_restart(self):
"""Test a single iteration of the mechanism with a given local restart active."""
for lr in filter(None, parameters.Parameters.local_restart.options):
c = modularcmaes.ModularCMAES(sum, self._dim, local_restart=lr)
for _ in range(10):
c.step()
c.parameters.max_iter = 5
c.step()
def run_bbob_function(self, module, value, fid):
"""Expects the output to be consistent with BBOB_2D_PER_MODULE_20_ITER."""
np.random.seed(42)
f = IOH_function(fid, self._dim, 1)
self.p = parameters.Parameters(self._dim,
budget=self._budget,
**{module: value})
self.c = modularcmaes.ModularCMAES(f, parameters=self.p).run()
self.assertAlmostEqual(
self.c.parameters.fopt,
BBOB_2D_PER_MODULE_20_ITER[f"{module}_{value}"][fid - 1],
)
def run_module(self, module, value):
"""Test a single run of the mechanism with a given module active."""
self.p = parameters.Parameters(self._dim,
budget=self._budget,
**{module: value})
self.c = modularcmaes.ModularCMAES(sum, parameters=self.p).run()
def test_str_repr(self):
"""Test the output of repr and str."""
c = modularcmaes.ModularCMAES(sum, 5)
self.assertIsInstance(str(c), str)
self.assertIsInstance(repr(c), str)
def test_best_so_far_storage(self):
"""Test storage of best so far individual."""
c = modularcmaes.ModularCMAES(sum, 5)
c.step()
self.assertEqual(len(c.parameters.xopt), 5)
self.assertEqual(sum(c.parameters.xopt), c.parameters.fopt)