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3da88e3 c138412 3da88e3 c138412 3da88e3 c138412 3da88e3 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 | import json
from pathlib import Path
import pytest
from h3_mlx import hub
from h3_mlx.config import SIGMAS
@pytest.mark.parametrize(
"name", ["/absolute", "../escape", "a/../b", "a//b", "a\\b", ""]
)
def test_manifest_paths_cannot_escape_assembly(name):
with pytest.raises(ValueError):
hub.relative_path(name)
def test_prepared_catalog_does_not_attempt_downloads(tmp_path, monkeypatch):
import huggingface_hub
def forbidden(*args, **kwargs):
pytest.fail("Prepared releases must not attempt network access")
monkeypatch.setattr(huggingface_hub, "snapshot_download", forbidden)
catalog = tmp_path / "prepared-catalog.json"
catalog.write_text(
json.dumps(
{
"format": "h3-mlx-catalog-v1",
"status": "prepared",
"variants": {"packed12": {}},
}
)
)
with pytest.raises(RuntimeError, match="publication is pending"):
hub.download_variant("packed12", tmp_path / "model", catalog_path=catalog)
def test_selective_assembly_reuses_shared_files_and_protects_existing_models(
tmp_path, monkeypatch
):
import huggingface_hub
entries = {
"shared": {"repo_id": "owner/shared", "revision": "a" * 40},
"q4": {
"repo_id": "owner/q4",
"revision": "b" * 40,
"core_format": "quantized",
"bits": 4,
},
"q8": {
"repo_id": "owner/q8",
"revision": "c" * 40,
"core_format": "quantized",
"bits": 8,
},
}
snapshots = {}
for name, entry in entries.items():
snapshot = tmp_path / name
file = snapshot / (
"model/vae/decoder.safetensors"
if name == "shared"
else "model/core/core-000.safetensors"
)
file.parent.mkdir(parents=True)
file.write_bytes(name.encode())
(snapshot / "config.json").write_text(json.dumps({"component": name}))
(snapshot / "LICENSE").write_text("retained license")
files = {
p.relative_to(snapshot).as_posix(): {
"bytes": p.stat().st_size,
"sha256": hub.sha256(p),
}
for p in (file, snapshot / "config.json", snapshot / "LICENSE")
}
(snapshot / "files.json").write_text(
json.dumps({"format": "h3-mlx-files-v1", "files": files})
)
snapshots[entry["repo_id"]] = snapshot
catalog = tmp_path / "catalog.json"
catalog.write_text(
json.dumps(
{
"format": "h3-mlx-catalog-v1",
"status": "published",
"source": {},
"sigmas": SIGMAS,
"shared": entries["shared"],
"variants": {name: entries[name] for name in ("q4", "q8")},
}
)
)
calls = []
def get_file(repo, filename, **kwargs):
calls.append((repo, filename, kwargs))
return str(snapshots[repo] / filename)
def snapshot(repo, **kwargs):
calls.append((repo, "snapshot", kwargs))
return str(snapshots[repo])
monkeypatch.setattr(huggingface_hub, "hf_hub_download", get_file)
monkeypatch.setattr(huggingface_hub, "snapshot_download", snapshot)
first = hub.download_variant(
"q4",
tmp_path / "model-q4",
catalog_path=catalog,
skip_encoder=True,
verify=True,
)
assert {call[0] for call in calls} == {"owner/shared", "owner/q4"}
assert all(
"config.json" in call[2]["allow_patterns"]
for call in calls
if call[1] == "snapshot"
)
assert Path(first["model_path"], "core/core-000.safetensors").read_bytes() == b"q4"
assert Path(first["model_path"], "licenses/shared/LICENSE").is_file()
assert hub.load_release(first["model_path"])["bits"] == 4
calls.clear()
hub.download_variant(
"q8", tmp_path / "model-q8", catalog_path=catalog, skip_encoder=True
)
assert (tmp_path / "model-q4/vae/decoder.safetensors").resolve() == (
tmp_path / "model-q8/vae/decoder.safetensors"
).resolve()
with pytest.raises(FileExistsError, match="separate empty"):
hub.download_variant(
"q8", tmp_path / "model-q4", catalog_path=catalog, skip_encoder=True
)
(tmp_path / "q4/model/core/core-000.safetensors").write_bytes(b"XX")
with pytest.raises(ValueError, match="SHA-256 mismatch"):
hub.download_variant(
"q4",
tmp_path / "model-q4",
catalog_path=catalog,
skip_encoder=True,
verify=True,
)
def test_unpinned_revisions_are_rejected_before_network_access():
with pytest.raises(ValueError, match="immutable"):
hub._manifest_snapshot({"repo_id": "owner/model", "revision": "main"})
def test_link_cannot_replace_an_unrelated_file(tmp_path):
source, destination = tmp_path / "source", tmp_path / "destination"
source.write_bytes(b"new")
destination.write_bytes(b"old")
with pytest.raises(FileExistsError):
hub._link(source, destination)
assert destination.read_bytes() == b"old"
def test_frozen_modulation_requires_its_schedule_and_precision(monkeypatch):
monkeypatch.setattr(hub.importlib.metadata, "version", lambda name: "0.32.4")
monkeypatch.setenv("MLX_ENABLE_TF32", "0")
release = {"sigmas": list(SIGMAS), "modulation_mlx": "0.32.4"}
hub.validate_modulation(release, SIGMAS)
with pytest.raises(ValueError, match="schedule"):
hub.validate_modulation(release, (1, 0))
monkeypatch.setenv("MLX_ENABLE_TF32", "1")
with pytest.raises(ValueError, match="MLX_ENABLE_TF32"):
hub.validate_modulation(release, SIGMAS)
def test_quantized_release_moves_without_original_checkpoint(tmp_path):
import hashlib
import shutil
import mlx.core as mx
from h3_mlx.config import DiTConfig
from h3_mlx.dit import DiT
model = tmp_path / "assembled"
transformer = model / "transformer"
core = model / "core"
transformer.mkdir(parents=True)
core.mkdir()
config = json.dumps(
vars(DiTConfig(hidden_size=32, text_dim=24, token_refiner_num_layers=0))
)
(transformer / "config.json").write_text(config)
mx.save_safetensors(
str(transformer / "support.safetensors"), {"native": mx.ones(1)}
)
mx.save_safetensors(str(core / "core-000.safetensors"), {"quantized": mx.ones(1)})
mx.save_safetensors(
str(model / "pdd_fused_heads.safetensors"), {"head": mx.ones(1)}
)
(core / "quantization.json").write_text(
json.dumps(
{
"format": "h3-mlx-core-v1",
"bits": 4,
"group_size": 64,
"source_config_sha256": hashlib.sha256(config.encode()).hexdigest(),
"source_fingerprint": "original-path-dependent-fingerprint-is-not-used",
}
)
)
(model / "release.json").write_text(
json.dumps(
{
"format": "h3-mlx-release-v1",
"core_format": "quantized",
"bits": 4,
"group_size": 64,
}
)
)
moved = tmp_path / "another-machine"
shutil.move(str(model), moved)
loaded = DiT(moved, cache_dir=tmp_path / "cache")
assert loaded.bits == 4 and loaded.core_store.path == moved / "core"
with pytest.raises(ValueError, match="already select"):
DiT(moved, bits=8)
metadata = hub.read_json(moved / "core/quantization.json")
metadata["source_config_sha256"] = "wrong"
(moved / "core/quantization.json").write_text(json.dumps(metadata))
with pytest.raises(ValueError, match="mismatch"):
DiT(moved)
|