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aszc-dev-ComfyUI-CoreMLSuite/tests/unit/test_characterization_latents.py
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aszc-dev 5dafd261b7 refactor(phase3): split pure logic into coreml_suite.core
Phase 3 of the modernization plan: move the framework-free math out of
the comfy-coupled modules so Tier-0 tests can run on plain Linux without
ComfyUI, coremltools, or python_coreml_stable_diffusion.

New pure-core package (no comfy / coreml / mps imports):
- coreml_suite.core.latents: chunk_batch, merge_chunks
- coreml_suite.core.controlnet: expand_inputs, no_control,
  extract_residual_kwargs, chunk_control
- coreml_suite.core.inputs: CoreMLInputs (chunks + coreml_kwargs)
- coreml_suite.core.sdxl: is_sdxl / is_sdxl_base / is_sdxl_refiner,
  build_sdxl_time_ids (base len 6, refiner len 5), build_sdxl_text_embeds,
  sdxl_model_function_wrapper
- coreml_suite.core.naming: compose_out_name, lora_names_from_params

Thin adapters keep the public import paths:
- coreml_suite.latents / coreml_suite.controlnet: re-export from core
- coreml_suite.models: CoreMLModelWrapper, CoreMLModelWrapperLCM,
  add_sdxl_model_options (now uses the pure builders from core.sdxl),
  get_latent_image, get_model_patcher remain framework-coupled
- coreml_suite.nodes: CoreMLConverter.convert now delegates the out_name
  composition to core.naming.compose_out_name

Test infra:
- tests/unit/* re-pointed at coreml_suite.core.*
- test_chunks.py dropped `from comfy.model_management import ...` and
  the dead `model_config` fixture (Phase 1 left it broken; Phase 3
  removes it entirely)
- test_characterization_sdxl_options now targets the pure builders
  directly via inspect.getclosurevars on the wrapper closure
- test_characterization_out_name now calls compose_out_name without the
  heavy CoreMLConverter monkey-patching that Phase 2 needed
- tests/unit/test_tier0_purity.py: new gate that fails if comfy /
  coremltools / etc leak into sys.modules during a pure `-m unit` run
  (skipped in mixed runs where m2 / integration legitimately import them)
- tests/__init__.py + top-level conftest.py + pyproject addopts
  `--import-mode=importlib --confcutdir=tests` together stop pytest from
  importing the repo-root `__init__.py` (the ComfyUI custom-node entry
  pulls in comfy)
- tests/conftest.py adds tier-aware collect_ignore so `-m unit` skips
  tests/m2 + tests/integration at collection time

Verification:
- `pytest -m unit tests/` → 88 passed in ~2s; deterministic across runs
- Tier-0 purity gate confirms no comfy/coreml/etc in sys.modules
- m2 golden image (Phase 2 anchor) still hashes identical → refactor
  produced bit-for-bit unchanged output
- `git diff main -- __init__.py coreml_suite/nodes.py` shows zero churn
  to NODE_CLASS_MAPPINGS keys or INPUT_TYPES field names (public
  workflow contract intact)
2026-05-22 16:08:01 +02:00

119 lines
3.7 KiB
Python

"""Phase 2 characterization tests for coreml_suite.latents.
Locks the *current* behavior of chunk_batch / merge_chunks — including the
zero-pad regions and the truncation in merge — so the Phase 3 refactor
cannot silently shift either contract.
"""
import pytest
import torch
from coreml_suite.core.latents import chunk_batch, merge_chunks
@pytest.fixture(autouse=True)
def _deterministic_seed():
torch.manual_seed(0)
def _const_tensor(batch, *rest):
return torch.arange(batch * 4 * 8 * 8, dtype=torch.float32).reshape(batch, 4, 8, 8)
# ---------- chunk_batch ------------------------------------------------------
def test_chunk_batch_passthrough_when_shape_matches():
x = _const_tensor(2)
out = chunk_batch(x, (2, 4, 8, 8))
assert len(out) == 1
# passthrough: the same object identity is returned (no copy).
assert out[0] is x
def test_chunk_batch_pads_single_chunk_when_input_smaller():
"""batch=1, target=2 -> one padded chunk; the second row is exact zero."""
x = _const_tensor(1)
out = chunk_batch(x, (2, 4, 8, 8))
assert len(out) == 1
assert out[0].shape == (2, 4, 8, 8)
assert torch.equal(out[0][0], x[0])
assert torch.equal(out[0][1], torch.zeros(4, 8, 8))
def test_chunk_batch_splits_exact_multiple():
"""batch=4, target=2 -> two chunks, no padding."""
x = _const_tensor(4)
out = chunk_batch(x, (2, 4, 8, 8))
assert len(out) == 2
assert out[0].shape == (2, 4, 8, 8)
assert out[1].shape == (2, 4, 8, 8)
assert torch.equal(out[0], x[:2])
assert torch.equal(out[1], x[2:])
def test_chunk_batch_pads_remainder_chunk():
"""batch=5, target=2 -> chunks=[x[0:2], x[2:4]] then [x[4], 0]."""
x = _const_tensor(5)
out = chunk_batch(x, (2, 4, 8, 8))
assert len(out) == 3
assert torch.equal(out[0], x[0:2])
assert torch.equal(out[1], x[2:4])
last = out[-1]
assert last.shape == (2, 4, 8, 8)
assert torch.equal(last[0], x[4])
# The remainder row is zero-padded; lock that exact contract.
assert torch.equal(last[1], torch.zeros(4, 8, 8))
assert last[1].sum() == 0
@pytest.mark.parametrize(
"batch_size,target,expected_chunks",
[
(1, 4, 1),
(3, 2, 2),
(5, 3, 2),
(9, 4, 3),
],
)
def test_chunk_batch_pad_region_is_zero(batch_size, target, expected_chunks):
x = _const_tensor(batch_size)
out = chunk_batch(x, (target, 4, 8, 8))
assert len(out) == expected_chunks
mod = batch_size % target
if mod == 0 and batch_size >= target:
return
last = out[-1]
pad_rows = target - (mod if (mod != 0 and batch_size >= target) else batch_size)
pad_region = last[-pad_rows:]
assert torch.equal(pad_region, torch.zeros_like(pad_region))
# ---------- merge_chunks -----------------------------------------------------
def test_merge_chunks_exact_concat():
x = _const_tensor(4)
chunks = chunk_batch(x, (2, 4, 8, 8))
merged = merge_chunks(chunks, x.shape)
assert merged.shape == x.shape
assert torch.equal(merged, x)
def test_merge_chunks_truncates_padding():
"""Round-trip with a padded last chunk drops the pad rows."""
x = _const_tensor(5)
chunks = chunk_batch(x, (2, 4, 8, 8))
merged = merge_chunks(chunks, x.shape)
assert merged.shape == x.shape
assert torch.equal(merged, x)
def test_merge_chunks_singleton_returns_equal_copy_when_shape_matches():
"""A singleton chunk list still goes through torch.cat, so we get a new
tensor equal to the input — locked here because Phase 3 might be tempted
to short-circuit and accidentally return the same object."""
x = _const_tensor(2)
out = merge_chunks([x], x.shape)
assert torch.equal(out, x)
assert out is not x