292 lines
9.0 KiB
Python
292 lines
9.0 KiB
Python
# SimpleSyrup - workflow-focused ComfyUI extensions for image generation
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# Copyright (C) 2026 Artificial Sweetener and contributors
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# SPDX-License-Identifier: AGPL-3.0-or-later
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"""Tests for contextual diffusion sampling orchestration."""
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from __future__ import annotations
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from typing import Any
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import pytest
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import torch
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from simple_syrup.domain.conditioning_batch import ConditioningBatch
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from simple_syrup.domain.segs import BoundingBox, CropRegion, Segment
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from simple_syrup.services import (
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contextual_diffusion_sampling_service as service_module,
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)
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from simple_syrup.services.contextual_diffusion_sampling_service import (
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ContextualDiffusionSamplingService,
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)
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def test_service_builds_global_context_and_segs_guided_tile_plan(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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"""Connected SEGS reach the runtime through the existing guided tile planner."""
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calls: list[dict[str, Any]] = []
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def fake_sample_contextual_diffusion(**kwargs: Any) -> dict[str, Any]:
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"""Record the completed plan and return the input latent."""
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calls.append(kwargs)
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latent_image = kwargs["latent_image"]
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if not isinstance(latent_image, dict):
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raise TypeError("Test runtime expected a latent dictionary.")
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return latent_image
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monkeypatch.setattr(
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service_module,
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"sample_contextual_diffusion",
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fake_sample_contextual_diffusion,
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)
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latent = {"samples": torch.zeros((1, 4, 64, 96))}
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result = ContextualDiffusionSamplingService().sample(
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**_sample_kwargs(latent=latent, segs=_segs(512, 768))
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)
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assert torch.equal(result.latent["samples"], latent["samples"])
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assert result.contexts[0] == (512, 768)
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assert len(result.contexts[1]) == len(calls[0]["plan"].tile_plan.tiles)
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assert not result.contexts[1].is_materialized
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assert all(segment.label.startswith("context_") for segment in result.contexts[1])
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assert result.contexts[1].is_materialized
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assert len(calls) == 1
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assert calls[0]["diffusion_mode"] == "mixture_of_diffusers"
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plan = calls[0]["plan"]
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assert (
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plan.global_context.context_width,
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plan.global_context.context_height,
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) == (64, 44)
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assert len(plan.tile_plan.tiles) > 1
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assert all(tile.weight_mask is not None for tile in plan.tile_plan.tiles)
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def test_service_rejects_segs_batch_mismatch_before_runtime(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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"""Ambiguous per-image semantic guidance fails before model sampling."""
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called = False
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def fake_sample_contextual_diffusion(**kwargs: Any) -> dict[str, Any]:
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"""Mark unexpected runtime entry."""
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del kwargs
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nonlocal called
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called = True
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return {}
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monkeypatch.setattr(
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service_module,
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"sample_contextual_diffusion",
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fake_sample_contextual_diffusion,
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)
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latent = {"samples": torch.zeros((2, 4, 64, 96))}
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with pytest.raises(ValueError, match="one SEGS payload or one per latent"):
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ContextualDiffusionSamplingService().sample(
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**_sample_kwargs(
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latent=latent,
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segs=[_segs(512, 768), _segs(512, 768), _segs(512, 768)],
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)
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)
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assert not called
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def test_service_selects_conditioning_batch_per_latent_with_shared_segs(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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"""Contextual SEGS sampling keeps its per-latent conditioning contract."""
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calls: list[dict[str, Any]] = []
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def fake_sample_contextual_diffusion(**kwargs: Any) -> dict[str, Any]:
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"""Record one item and return its latent unchanged."""
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calls.append(kwargs)
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latent_image = kwargs["latent_image"]
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if not isinstance(latent_image, dict):
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raise TypeError("Test runtime expected a latent dictionary.")
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return latent_image
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monkeypatch.setattr(
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service_module,
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"sample_contextual_diffusion",
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fake_sample_contextual_diffusion,
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)
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latent = {"samples": torch.zeros((2, 4, 64, 96))}
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ContextualDiffusionSamplingService().sample(
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**(
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_sample_kwargs(latent=latent, segs=_segs(512, 768))
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| {
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"positive": ConditioningBatch(("positive-0", "positive-1")),
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"negative": ConditioningBatch(("negative-0", "negative-1")),
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}
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)
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)
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assert [call["positive"] for call in calls] == ["positive-0", "positive-1"]
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assert [call["negative"] for call in calls] == ["negative-0", "negative-1"]
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def test_service_applies_regional_conditioning_to_contextual_runtime(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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"""Contextual local and global predictions share assembled regional inputs."""
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calls: list[dict[str, Any]] = []
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def fake_sample_contextual_diffusion(**kwargs: Any) -> dict[str, Any]:
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"""Record one regional contextual request and return its latent."""
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calls.append(kwargs)
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latent_image = kwargs["latent_image"]
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if not isinstance(latent_image, dict):
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raise TypeError("Test runtime expected a latent dictionary.")
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return latent_image
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monkeypatch.setattr(
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service_module,
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"sample_contextual_diffusion",
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fake_sample_contextual_diffusion,
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)
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masks = torch.zeros((2, 64, 96))
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masks[0, :, :48] = 1.0
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masks[1, :, 48:] = 1.0
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ContextualDiffusionSamplingService().sample(
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**(
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_sample_kwargs(
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latent={
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"samples": torch.zeros((1, 4, 64, 96)),
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"downscale_ratio_spacial": 8,
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},
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segs=None,
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)
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| {
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"positive": ConditioningBatch(
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(
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_conditioning("global"),
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_conditioning("left"),
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_conditioning("right"),
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)
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),
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"negative": _conditioning("negative"),
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"region_masks": masks,
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}
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)
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)
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assert len(calls) == 1
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assert [item[0] for item in calls[0]["positive"]] == [
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"global",
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"left",
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"right",
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]
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assert calls[0]["allow_full_context_masks"] is True
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assert len(calls[0]["plan"].tile_plan.tiles) >= 2
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assert all(
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tile.weight_mask is not None for tile in calls[0]["plan"].tile_plan.tiles
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)
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def test_service_rejects_invalid_controls_before_runtime(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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"""Invalid context geometry fails without sampler side effects."""
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monkeypatch.setattr(
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service_module,
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"sample_contextual_diffusion",
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lambda **_kwargs: pytest.fail("runtime should not be called"),
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)
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with pytest.raises(ValueError, match="latent_context_overlap"):
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ContextualDiffusionSamplingService().sample(
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**(
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_sample_kwargs(
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latent={
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"samples": torch.zeros((1, 4, 64, 96)),
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"downscale_ratio_spacial": 8,
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},
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segs=None,
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)
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| {"latent_context_overlap": 64}
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)
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)
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def test_service_rejects_unknown_diffusion_mode_before_runtime(
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monkeypatch: pytest.MonkeyPatch,
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) -> None:
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"""Unknown tile blending policies fail before model sampling begins."""
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monkeypatch.setattr(
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service_module,
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"sample_contextual_diffusion",
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lambda **_kwargs: pytest.fail("runtime should not be called"),
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)
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with pytest.raises(ValueError, match="diffusion_mode must be one of"):
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ContextualDiffusionSamplingService().sample(
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**(
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_sample_kwargs(
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latent={"samples": torch.zeros((1, 4, 64, 96))},
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segs=None,
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)
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| {"diffusion_mode": "unknown"}
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)
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)
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def _sample_kwargs(*, latent: dict[str, Any], segs: object | None) -> dict[str, Any]:
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"""Return one valid service request."""
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return {
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"model": object(),
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"seed": 1,
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"steps": 4,
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"cfg": 1.0,
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"sampler_name": "euler",
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"scheduler": "simple",
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"positive": [],
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"negative": [],
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"latent_image": latent,
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"denoise": 0.5,
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"diffusion_mode": "mixture_of_diffusers",
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"latent_context_size": 64,
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"latent_context_overlap": 8,
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"latent_context_batch_size": 2,
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"global_weight": 1.0,
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"global_steps": 1,
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"global_decay": 0.5,
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"segs": segs,
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}
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def _segs(height: int, width: int) -> object:
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"""Return one full-image Impact-compatible SEG payload."""
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crop = CropRegion(0, 0, width, height)
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segment = Segment(
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cropped_image=None,
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cropped_mask=torch.ones((height, width), dtype=torch.float32),
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confidence=1.0,
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crop_region=crop,
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bbox=BoundingBox(*crop),
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label="subject",
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)
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return ((height, width), (segment,))
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def _conditioning(name: str) -> list[list[object]]:
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"""Return one structurally valid standard conditioning value."""
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return [[name, {}]]
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