def test_get_action(self, obs_dim, action_dim):
env = TfEnv(DummyBoxEnv(obs_dim=obs_dim, action_dim=action_dim))
with mock.patch(('garage.tf.policies.'
'gaussian_mlp_policy_with_model.GaussianMLPModel'),
new=SimpleGaussianMLPModel):
policy = GaussianMLPPolicyWithModel(env_spec=env.spec)
env.reset()
obs, _, _, _ = env.step(1)
action, prob = policy.get_action(obs)
expected_action = np.full(action_dim, 0.75)
expected_mean = np.full(action_dim, 0.5)
expected_log_std = np.full(action_dim, 0.5)
assert env.action_space.contains(action)
assert np.array_equal(action, expected_action)
assert np.array_equal(prob['mean'], expected_mean)
assert np.array_equal(prob['log_std'], expected_log_std)
actions, probs = policy.get_actions([obs, obs, obs])
for action, mean, log_std in zip(actions, probs['mean'],
probs['log_std']):
assert env.action_space.contains(action)
assert np.array_equal(action, expected_action)
assert np.array_equal(prob['mean'], expected_mean)
assert np.array_equal(prob['log_std'], expected_log_std)
def test_is_pickleable(self, obs_dim, action_dim):
env = TfEnv(DummyBoxEnv(obs_dim=obs_dim, action_dim=action_dim))
with mock.patch(('garage.tf.policies.'
'gaussian_mlp_policy_with_model.GaussianMLPModel'),
new=SimpleGaussianMLPModel):
policy = GaussianMLPPolicyWithModel(env_spec=env.spec)
env.reset()
obs, _, _, _ = env.step(1)
obs_dim = env.spec.observation_space.flat_dim
action1, prob1 = policy.get_action(obs)
p = pickle.dumps(policy)
with tf.Session(graph=tf.Graph()):
policy_pickled = pickle.loads(p)
action2, prob2 = policy_pickled.get_action(obs)
assert env.action_space.contains(action1)
assert np.array_equal(action1, action2)
assert np.array_equal(prob1['mean'], prob2['mean'])
assert np.array_equal(prob1['log_std'], prob2['log_std'])
class TestGaussianMLPPolicyWithModelTransit(TfGraphTestCase):
def setup_method(self):
with mock.patch('tensorflow.random.normal') as mock_rand:
mock_rand.return_value = 0.5
super().setup_method()
self.box_env = TfEnv(DummyBoxEnv())
self.policy1 = GaussianMLPPolicy(env_spec=self.box_env,
init_std=1.0,
name='P1')
self.policy2 = GaussianMLPPolicy(env_spec=self.box_env,
init_std=1.2,
name='P2')
self.policy3 = GaussianMLPPolicyWithModel(env_spec=self.box_env,
init_std=1.0,
name='P3')
self.policy4 = GaussianMLPPolicyWithModel(env_spec=self.box_env,
init_std=1.2,
name='P4')
self.sess.run(tf.global_variables_initializer())
for a, b in zip(self.policy3.get_params(),
self.policy1.get_params()):
self.sess.run(tf.assign(b, a))
for a, b in zip(self.policy4.get_params(),
self.policy2.get_params()):
self.sess.run(tf.assign(b, a))
self.obs = [self.box_env.reset()]
self.obs_ph = tf.placeholder(
tf.float32,
shape=(None, self.box_env.observation_space.flat_dim))
self.action_ph = tf.placeholder(
tf.float32, shape=(None, self.box_env.action_space.flat_dim))
self.dist1_sym = self.policy1.dist_info_sym(self.obs_ph,
name='p1_sym')
self.dist2_sym = self.policy2.dist_info_sym(self.obs_ph,
name='p2_sym')
self.dist3_sym = self.policy3.dist_info_sym(self.obs_ph,
name='p3_sym')
self.dist4_sym = self.policy4.dist_info_sym(self.obs_ph,
name='p4_sym')
assert self.policy1.vectorized == self.policy2.vectorized
assert self.policy3.vectorized == self.policy4.vectorized
def test_dist_info_sym_output(self):
dist1 = self.sess.run(self.dist1_sym,
feed_dict={self.obs_ph: self.obs})
dist2 = self.sess.run(self.dist2_sym,
feed_dict={self.obs_ph: self.obs})
dist3 = self.sess.run(self.dist3_sym,
feed_dict={self.obs_ph: self.obs})
dist4 = self.sess.run(self.dist4_sym,
feed_dict={self.obs_ph: self.obs})
assert np.array_equal(dist1['mean'], dist3['mean'])
assert np.array_equal(dist1['log_std'], dist3['log_std'])
assert np.array_equal(dist2['mean'], dist4['mean'])
assert np.array_equal(dist2['log_std'], dist4['log_std'])
@mock.patch('numpy.random.normal')
def test_get_action(self, mock_rand):
mock_rand.return_value = 0.5
action1, _ = self.policy1.get_action(self.obs)
action2, _ = self.policy2.get_action(self.obs)
action3, _ = self.policy3.get_action(self.obs)
action4, _ = self.policy4.get_action(self.obs)
assert np.array_equal(action1, action3)
assert np.array_equal(action2, action4)
actions1, dist_info1 = self.policy1.get_actions([self.obs])
actions2, dist_info2 = self.policy2.get_actions([self.obs])
actions3, dist_info3 = self.policy3.get_actions([self.obs])
actions4, dist_info4 = self.policy4.get_actions([self.obs])
assert np.array_equal(actions1, actions3)
assert np.array_equal(actions2, actions4)
assert np.array_equal(dist_info1['mean'], dist_info3['mean'])
assert np.array_equal(dist_info1['log_std'], dist_info3['log_std'])
assert np.array_equal(dist_info2['mean'], dist_info4['mean'])
assert np.array_equal(dist_info2['log_std'], dist_info4['log_std'])
def test_kl_sym(self):
kl_diff_sym1 = self.policy1.distribution.kl_sym(
self.dist1_sym, self.dist2_sym)
objective1 = tf.reduce_mean(kl_diff_sym1)
kl_func = tensor_utils.compile_function([self.obs_ph], objective1)
kl1 = kl_func(self.obs, self.obs)
kl_diff_sym2 = self.policy3.distribution.kl_sym(
self.dist3_sym, self.dist4_sym)
objective2 = tf.reduce_mean(kl_diff_sym2)
kl_func = tensor_utils.compile_function([self.obs_ph], objective2)
kl2 = kl_func(self.obs, self.obs)
assert np.array_equal(kl1, kl2)
assert kl1 == pytest.approx(kl2)
def test_log_likehihood_sym(self):
log_prob_sym1 = self.policy1.distribution.log_likelihood_sym(
self.action_ph, self.dist1_sym)
log_prob_func = tensor_utils.compile_function(
[self.obs_ph, self.action_ph], log_prob_sym1)
log_prob1 = log_prob_func(self.obs, [[1, 1]])
log_prob_sym2 = self.policy3.model.networks[
'default'].dist.log_likelihood_sym(self.action_ph, self.dist3_sym)
log_prob_func2 = tensor_utils.compile_function(
[self.obs_ph, self.action_ph], log_prob_sym2)
log_prob2 = log_prob_func2(self.obs, [[1, 1]])
assert log_prob1 == log_prob2
log_prob_sym1 = self.policy2.distribution.log_likelihood_sym(
self.action_ph, self.dist2_sym)
log_prob_func = tensor_utils.compile_function(
[self.obs_ph, self.action_ph], log_prob_sym1)
log_prob1 = log_prob_func(self.obs, [[1, 1]])
log_prob_sym2 = self.policy4.model.networks[
'default'].dist.log_likelihood_sym(self.action_ph, self.dist4_sym)
log_prob_func2 = tensor_utils.compile_function(
[self.obs_ph, self.action_ph], log_prob_sym2)
log_prob2 = log_prob_func2(self.obs, [[1, 1]])
assert log_prob1 == log_prob2
def test_policy_entropy_sym(self):
entropy_sym1 = self.policy1.distribution.entropy_sym(
self.dist1_sym, name='entropy_sym1')
entropy_func = tensor_utils.compile_function([self.obs_ph],
entropy_sym1)
entropy1 = entropy_func(self.obs)
entropy_sym2 = self.policy3.distribution.entropy_sym(
self.dist3_sym, name='entropy_sym1')
entropy_func = tensor_utils.compile_function([self.obs_ph],
entropy_sym2)
entropy2 = entropy_func(self.obs)
assert entropy1 == entropy2
def test_likelihood_ratio_sym(self):
likelihood_ratio_sym1 = self.policy1.distribution.likelihood_ratio_sym(
self.action_ph,
self.dist1_sym,
self.dist2_sym,
name='li_ratio_sym1')
likelihood_ratio_func = tensor_utils.compile_function(
[self.action_ph, self.obs_ph], likelihood_ratio_sym1)
likelihood_ratio1 = likelihood_ratio_func([[1, 1]], self.obs)
likelihood_ratio_sym2 = self.policy3.distribution.likelihood_ratio_sym(
self.action_ph,
self.dist3_sym,
self.dist4_sym,
name='li_ratio_sym2')
likelihood_ratio_func = tensor_utils.compile_function(
[self.action_ph, self.obs_ph], likelihood_ratio_sym2)
likelihood_ratio2 = likelihood_ratio_func([[1, 1]], self.obs)
assert likelihood_ratio1 == likelihood_ratio2