def test_de_run():
def square(x):
return np.sum(x**2)
def hook(optimizer, space, function):
return
new_function = function.Function(pointer=square)
hyperparams = {'CR': 0.9, 'F': 0.7}
new_de = de.DE(hyperparams=hyperparams)
search_space = search.SearchSpace(n_agents=10,
n_iterations=100,
n_variables=2,
lower_bound=[0, 0],
upper_bound=[10, 10])
history = new_de.run(search_space, new_function, pre_evaluation=hook)
assert len(history.agents) > 0
assert len(history.best_agent) > 0
best_fitness = history.best_agent[-1][1]
assert best_fitness <= constants.TEST_EPSILON, 'The algorithm de failed to converge.'
def test_de_hyperparams_setter():
new_de = de.DE()
try:
new_de.CR = 'a'
except:
new_de.CR = 0.5
try:
new_de.CR = -1
except:
new_de.CR = 0.5
assert new_de.CR == 0.5
try:
new_de.F = 'b'
except:
new_de.F = 0.5
try:
new_de.F = -1
except:
new_de.F = 0.5
assert new_de.F == 0.5
def test_de_params_setter():
new_de = de.DE()
try:
new_de.CR = "a"
except:
new_de.CR = 0.5
try:
new_de.CR = -1
except:
new_de.CR = 0.5
assert new_de.CR == 0.5
try:
new_de.F = "b"
except:
new_de.F = 0.5
try:
new_de.F = -1
except:
new_de.F = 0.5
assert new_de.F == 0.5
def test_de_hyperparams():
hyperparams = {'CR': 0.9, 'F': 0.7}
new_de = de.DE(hyperparams=hyperparams)
assert new_de.CR == 0.9
assert new_de.F == 0.7
def test_de_params():
params = {'CR': 0.9, 'F': 0.7}
new_de = de.DE(params=params)
assert new_de.CR == 0.9
assert new_de.F == 0.7
def test_de_params():
params = {"CR": 0.9, "F": 0.7}
new_de = de.DE(params=params)
assert new_de.CR == 0.9
assert new_de.F == 0.7
def test_de_update():
def square(x):
return np.sum(x**2)
new_de = de.DE()
search_space = search.SearchSpace(n_agents=10,
n_variables=2,
lower_bound=[0, 0],
upper_bound=[10, 10])
new_de.update(search_space, square)
def test_de_mutate_agent():
new_de = de.DE()
search_space = search.SearchSpace(n_agents=4,
n_variables=2,
lower_bound=[0, 0],
upper_bound=[10, 10])
agent = new_de._mutate_agent(search_space.agents[0],
search_space.agents[1],
search_space.agents[2],
search_space.agents[3])
assert agent.position[0][0] != 0
def test_de_build():
new_de = de.DE()
assert new_de.built == True