def test_per_from_state_wrong_type():
# Assign
buffer = PERBuffer(batch_size=5, buffer_size=20)
state = buffer.get_state()
state.type = "WrongType"
# Act
with pytest.raises(ValueError):
PERBuffer.from_state(state=state)
def from_state(state: BufferState) -> BufferBase:
if state.type == ReplayBuffer.type:
return ReplayBuffer.from_state(state)
elif state.type == PERBuffer.type:
return PERBuffer.from_state(state)
elif state.type == NStepBuffer.type:
return NStepBuffer.from_state(state)
elif state.type == RolloutBuffer.type:
return RolloutBuffer.from_state(state)
else:
raise ValueError(f"Buffer state contains unsupported buffer type: '{state.type}'")
def test_per_from_state_without_data():
# Assign
buffer = PERBuffer(batch_size=5, buffer_size=20)
state = buffer.get_state()
# Act
new_buffer = PERBuffer.from_state(state=state)
# Assert
assert new_buffer == buffer
assert new_buffer.buffer_size == state.buffer_size
assert new_buffer.batch_size == state.batch_size
assert new_buffer.data == []
def test_per_from_state_with_data():
# Assign
buffer = PERBuffer(batch_size=5, buffer_size=20)
buffer = populate_buffer(buffer, 30)
state = buffer.get_state()
# Act
new_buffer = PERBuffer.from_state(state=state)
# Assert
assert new_buffer == buffer
assert new_buffer.buffer_size == state.buffer_size
assert new_buffer.batch_size == state.batch_size
assert new_buffer.data == state.data
assert len(buffer.data) == state.buffer_size