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vllm-omni/tests/dreamzero/test_pipeline_state.py
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2026-06-02 19:50:20 +00:00

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Python

# SPDX-License-Identifier: Apache-2.0
# SPDX-FileCopyrightText: Copyright contributors to the vLLM project
from collections import OrderedDict
import pytest
import torch
from vllm_omni.diffusion.models.dreamzero.pipeline_dreamzero import DreamZeroPipeline
from vllm_omni.diffusion.models.dreamzero.state_dreamzero import DreamZeroState
pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
def _empty_pipeline() -> DreamZeroPipeline:
pipeline = DreamZeroPipeline.__new__(DreamZeroPipeline)
pipeline._states = OrderedDict()
pipeline._max_session_states = 2
return pipeline
def test_dreamzero_pipeline_state_is_session_keyed() -> None:
pipeline = _empty_pipeline()
session_a = pipeline._get_or_create_state("session-a")
session_b = pipeline._get_or_create_state("session-b")
session_a.call_count = 7
session_b.call_count = 3
assert pipeline._get_or_create_state("session-a") is session_a
assert pipeline._get_or_create_state("session-b") is session_b
assert session_a.call_count == 7
assert session_b.call_count == 3
def test_dreamzero_pipeline_state_lru_caps_retained_sessions() -> None:
pipeline = _empty_pipeline()
session_a = pipeline._get_or_create_state("session-a")
pipeline._get_or_create_state("session-b")
assert pipeline._get_or_create_state("session-a") is session_a
pipeline._get_or_create_state("session-c")
assert list(pipeline._states) == ["session-a", "session-c"]
assert "session-b" not in pipeline._states
def test_dreamzero_state_cache_access_requires_initialization() -> None:
state = DreamZeroState()
with pytest.raises(RuntimeError, match="KV caches not initialized"):
state.get_kv_caches()
with pytest.raises(RuntimeError, match="Cross-attn caches not initialized"):
state.get_crossattn_caches()
with pytest.raises(RuntimeError, match="create_kv_caches first"):
state.update_kv_cache(0, torch.empty(0))