def create_default_memory(self):
return prioritized_replay_buffer.PrioritizedReplayBuffer(
SCREEN_SIZE,
STACK_SIZE,
REPLAY_CAPACITY,
BATCH_SIZE,
max_sample_attempts=10) # For faster tests.
def testSampleIndexBatch(self):
memory = prioritized_replay_buffer.PrioritizedReplayBuffer(
STACK_SIZE, REPLAY_CAPACITY, BATCH_SIZE, max_sample_attempts=10)
# This will ensure we end up with cursor == 1.
for _ in range(REPLAY_CAPACITY - STACK_SIZE + 2):
self.add_blank(memory)
self.assertEqual(memory.cursor(), 1)
samples = memory.sample_index_batch(REPLAY_CAPACITY)
# Because cursor == 1, the invalid range as set by circular_replay_buffer.py
# will be # [0, 1, 2, 3], resulting in all samples being in
# [STACK_SIZE, REPLAY_CAPACITY - 1].
for sample in samples:
self.assertGreaterEqual(sample, STACK_SIZE)
self.assertLessEqual(sample, REPLAY_CAPACITY - 1)