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"""Standalone tests for transparent upstream Motion Context delegation."""
import importlib.util
import pathlib
import sys
import types
ROOT = pathlib.Path(__file__).resolve().parents[1]
PACKAGE = "h3_motion_context_upstream_unit"
package = types.ModuleType(PACKAGE)
package.__path__ = [str(ROOT)]
sys.modules[PACKAGE] = package
shared_nodes = types.ModuleType(PACKAGE + ".nodes")
shared_nodes.FRAME_RESCALE = 5.0 / 3.0
shared_nodes._pixel_frames = lambda _steps: 100
shared_nodes._video_from_latent = lambda _latent: types.SimpleNamespace(
shape=(1, 16, 30, 2, 2))
shared_nodes._audio_tail_from_latent = lambda _latent, _frames: (
"tail", 37, -1.0 / 3.0)
shared_nodes.payload_merge_calls = []
def ensure_payload_merge(**requirements):
shared_nodes.payload_merge_calls.append(requirements)
return "test native payload verified"
shared_nodes._ensure_native_payload_merge = ensure_payload_merge
sys.modules[shared_nodes.__name__] = shared_nodes
spec = importlib.util.spec_from_file_location(
PACKAGE + ".motion_context_upstream",
ROOT / "motion_context_upstream.py")
adapter = importlib.util.module_from_spec(spec)
sys.modules[spec.name] = adapter
spec.loader.exec_module(adapter)
class Frames:
def __init__(self, count):
self.shape = (count, 8, 8, 3)
class UpstreamMotionContext:
calls = []
fail_audio_merge = False
FUNCTION = "apply"
@classmethod
def INPUT_TYPES(cls):
return {
"required": {
name: ("ANY", {}) for name in (
"conditioning", "vae", "latent", "context_frames",
"context_length", "encode_mode", "anchor_mode", "crop",
"audio_context_length", "audio_mode", "target_start")
},
"optional": {
"context_latent": ("LATENT", {}),
"audio_vae": ("VAE", {}),
"context_audio": ("AUDIO", {}),
},
}
def apply(self, **kwargs):
type(self).calls.append(kwargs)
if type(self).fail_audio_merge:
raise RuntimeError(
"h3_motion_context: this graph requires native MiniMax H3 "
"guide/MultiRef support from ComfyUI PR #15439, but the live "
"runtime is missing native_keyframe_ref_audio_merge."
)
existing = list(kwargs["conditioning"][0][1].get(
"minimax_keyframes", []))
visual = {
"resolved_frame_index": 0,
"latent": "upstream-visual",
}
if kwargs.get("context_latent") is not None:
visual["audio_latent"] = "upstream-audio"
existing.append(visual)
metadata = kwargs["conditioning"][0][1].copy()
metadata["minimax_keyframes"] = existing
return ([[kwargs["conditioning"][0][0], metadata]],
int(kwargs["context_length"]))
class FallbackMotionContext:
calls = []
def apply(self, **kwargs):
type(self).calls.append(kwargs)
return ("fallback-conditioning", int(kwargs["context_length"]))
def apply(**overrides):
values = {
"conditioning": [["embedding", {}]],
"vae": "video-vae",
"latent": "target-latent",
"context_frames": Frames(22),
"context_length": 22,
"encode_mode": "video",
"anchor_mode": "head",
"crop": "disabled",
"audio_context_length": 0,
"audio_mode": "timeline",
"context_latent": None,
"audio_vae": None,
"context_audio": None,
"video_context_latent": None,
}
values.update(overrides)
return adapter.apply_motion_context(FallbackMotionContext, **values)
def main():
original_nodes = sys.modules.get("nodes")
comfy_nodes = types.ModuleType("nodes")
comfy_nodes.NODE_CLASS_MAPPINGS = {
adapter.UPSTREAM_NODE_ID: UpstreamMotionContext,
}
sys.modules["nodes"] = comfy_nodes
original_native = adapter._native_guides_available
adapter._native_guides_available = lambda: True
try:
# Normal Guide scenes delegate. The adapter arbitrates an incoming
# first-frame collision and restores Loop-private output metadata.
conditioning = [["embedding", {
"minimax_keyframes": [
{"resolved_frame_index": 0, "latent": "first"},
{"resolved_frame_index": 70, "latent": "last"},
],
"minimax_frame_count": 100,
}]]
output, trim = apply(conditioning=conditioning)
assert trim == 22
assert not FallbackMotionContext.calls
assert len(UpstreamMotionContext.calls) == 1
delegated = UpstreamMotionContext.calls[-1]
assert delegated["target_start"] == 0
assert [value["resolved_frame_index"] for value in
delegated["conditioning"][0][1]["minimax_keyframes"]] == [70]
metadata = output[0][1]
assert [value["resolved_frame_index"] for value in
metadata["minimax_keyframes"]] == [70, 0]
assert metadata["minimax_keyframes"][-1][
"h3_chain_context_visual"] is True
assert conditioning[0][1]["minimax_keyframes"][0]["latent"] == "first"
# The upstream latent-audio slice is retained, while the adapter
# restores the signed H3 grid position without moving its visual Guide.
output, _trim = apply(context_latent="previous-av-latent")
keyframes = output[0][1]["minimax_keyframes"]
assert len(keyframes) == 2
assert keyframes[0]["resolved_frame_index"] == 0
assert "audio_latent" not in keyframes[0]
assert keyframes[0]["h3_chain_context_visual"] is True
assert abs(keyframes[1]["resolved_frame_index"] + 0.4) < 1e-9
assert keyframes[1]["audio_latent"] == "upstream-audio"
# Provider versions predating their own compatibility guard must not
# bypass Chain's live payload verification. Ref-mode audio adds a
# keyframe payload that must merge with Ref2VA video; visual-only
# Ref2VA needs video merge; timeline carry needs both payload merges.
apply(context_latent="previous-av-latent", audio_mode="ref")
assert shared_nodes.payload_merge_calls[-1] == {
"require_video": True, "require_audio": False}
ref_conditioning = [["embedding", {
"minimax_refs": [{"kind": "image", "latent": "reference"}],
}]]
apply(conditioning=ref_conditioning)
assert shared_nodes.payload_merge_calls[-1] == {
"require_video": True, "require_audio": False}
apply(
conditioning=ref_conditioning,
context_latent="previous-av-latent")
assert shared_nodes.payload_merge_calls[-1] == {
"require_video": True, "require_audio": True}
# Loop-only modes remain lossless through the internal engine.
result = apply(video_context_latent="previous-video-latent")
assert result == ("fallback-conditioning", 22)
assert FallbackMotionContext.calls[-1][
"video_context_latent"] == "previous-video-latent"
result = apply(
context_frames=Frames(0), context_length=0,
audio_context_length=33, context_latent="previous-av-latent")
assert result == ("fallback-conditioning", 0)
result = apply(
audio_context_length=39,
context_latent="previous-av-latent")
assert result == ("fallback-conditioning", 22)
original_repair = adapter._enable_internal_payload_merge
adapter._enable_internal_payload_merge = lambda: (
True, "test payload compatibility enabled")
UpstreamMotionContext.fail_audio_merge = True
result = apply(context_latent="previous-av-latent")
assert result == ("fallback-conditioning", 22)
assert FallbackMotionContext.calls[-1][
"context_latent"] == "previous-av-latent"
UpstreamMotionContext.fail_audio_merge = False
adapter._enable_internal_payload_merge = original_repair
# Older ComfyUI falls back even when the provider itself is installed.
adapter._native_guides_available = lambda: False
result = apply()
assert result == ("fallback-conditioning", 22)
# Missing provider is also a safe internal fallback.
adapter._native_guides_available = lambda: True
comfy_nodes.NODE_CLASS_MAPPINGS.clear()
result = apply()
assert result == ("fallback-conditioning", 22)
finally:
adapter._native_guides_available = original_native
if original_nodes is None:
sys.modules.pop("nodes", None)
else:
sys.modules["nodes"] = original_nodes
print("upstream Motion Context: transparent delegation and guarded "
"feature fallbacks passed")
if __name__ == "__main__":
main()
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