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from __future__ import annotations
from pathlib import Path
import pytest
from mcp_sd15.config import ConfigError, load_config
def make_models(root: Path) -> None:
for folder, names in {
"checkpoints": ["base.safetensors"],
"vae": ["vae.safetensors"],
"lora": ["a.safetensors", "b.safetensors"],
"controlnet": ["depth.safetensors", "pose.safetensors", "inpaint.safetensors"],
}.items():
destination = root / folder
destination.mkdir(parents=True)
for name in names:
(destination / name).touch()
def valid_toml(root: Path) -> str:
return f'''[model]
root = "{root.as_posix()}"
checkpoint = "base.safetensors"
vae = "vae.safetensors"
[[model.lora]]
file = "a.safetensors"
weight = 0.8
[[model.lora]]
file = "b.safetensors"
weight = -0.2
[generation]
steps = 20
cfg_scale = 6.5
scheduler = "euler_a"
default_size = "portrait_512"
[controlnet.depth]
enabled = true
model = "depth.safetensors"
preprocessor = "midas"
[controlnet.openpose]
enabled = true
model = "pose.safetensors"
[controlnet.inpaint]
enabled = true
model = "inpaint.safetensors"
[output]
enabled = true
directory = "generated"
'''
def test_loads_and_resolves_all_model_paths(tmp_path: Path) -> None:
root = tmp_path / "models"
make_models(root)
path = tmp_path / "config.toml"
path.write_text(valid_toml(root), encoding="utf-8")
config = load_config(path)
assert config.model.checkpoint_path() == root / "checkpoints" / "base.safetensors"
assert config.model.vae_path() == root / "vae" / "vae.safetensors"
assert config.model.lora_paths() == (
root / "lora" / "a.safetensors",
root / "lora" / "b.safetensors",
)
assert config.generation.default_size == "portrait_512"
assert config.output.directory == tmp_path / "generated"
assert config.controlnet_path("openpose_full") == root / "controlnet" / "pose.safetensors"
@pytest.mark.parametrize(
"line, message",
[
('checkpoint = "../base.safetensors"', "file name"),
("steps = 0", "steps"),
('scheduler = "dpmpp_2m"', "scheduler"),
('scheduler = "euler"', "scheduler"),
('scheduler = "unknown"', "scheduler"),
('default_size = "1024"', "default_size"),
('preprocessor = "zoe"', "preprocessor"),
],
)
def test_rejects_invalid_values(tmp_path: Path, line: str, message: str) -> None:
root = tmp_path / "models"
make_models(root)
text = valid_toml(root)
if line.startswith("checkpoint"):
text = text.replace('checkpoint = "base.safetensors"', line)
elif line.startswith("steps"):
text = text.replace("steps = 20", line)
elif line.startswith("scheduler"):
text = text.replace('scheduler = "euler_a"', line)
elif line.startswith("default_size"):
text = text.replace('default_size = "portrait_512"', line)
else:
text = text.replace('preprocessor = "midas"', line)
path = tmp_path / "bad.toml"
path.write_text(text, encoding="utf-8")
with pytest.raises(ConfigError, match=message):
load_config(path)
def test_missing_model_fails_startup_validation(tmp_path: Path) -> None:
root = tmp_path / "models"
make_models(root)
(root / "controlnet" / "depth.safetensors").unlink()
path = tmp_path / "config.toml"
path.write_text(valid_toml(root), encoding="utf-8")
with pytest.raises(ConfigError, match=r"depth\.safetensors"):
load_config(path)
def test_can_skip_path_checks_for_schema_only_use(tmp_path: Path) -> None:
path = tmp_path / "config.toml"
path.write_text(
'[model]\nroot = "missing"\ncheckpoint = "base.safetensors"\n', encoding="utf-8"
)
config = load_config(path, validate_paths=False)
assert config.model.root == (tmp_path / "missing").resolve()
assert config.generation.scheduler == "dpmpp_2m_karras"
def test_server_defaults_to_stdio_when_omitted(tmp_path: Path) -> None:
path = tmp_path / "config.toml"
path.write_text(
f'[model]\nroot = "{tmp_path.as_posix()}"\ncheckpoint = "base.safetensors"\n',
encoding="utf-8",
)
config = load_config(path, validate_paths=False)
assert config.server.transport == "stdio"
assert config.server.host == "127.0.0.1"
assert config.server.port == 8000
def test_server_reads_streamable_http(tmp_path: Path) -> None:
path = tmp_path / "config.toml"
path.write_text(
f'[model]\nroot = "{tmp_path.as_posix()}"\ncheckpoint = "base.safetensors"\n'
'[server]\ntransport = "streamable-http"\nhost = "0.0.0.0"\nport = 9000\n',
encoding="utf-8",
)
config = load_config(path, validate_paths=False)
assert config.server.transport == "streamable-http"
assert config.server.host == "0.0.0.0"
assert config.server.port == 9000
@pytest.mark.parametrize(
"transport",
["sse", "http", "ws", "unknown"],
)
def test_rejects_invalid_transport(tmp_path: Path, transport: str) -> None:
path = tmp_path / "config.toml"
path.write_text(
f'[model]\nroot = "{tmp_path.as_posix()}"\ncheckpoint = "base.safetensors"\n'
f'[server]\ntransport = "{transport}"\n',
encoding="utf-8",
)
with pytest.raises(ConfigError, match="transport"):
load_config(path, validate_paths=False)
@pytest.mark.parametrize(
"port, message",
[
(0, "port"),
(65536, "port"),
(-1, "port"),
("8000", "port"),
],
)
def test_rejects_invalid_port(tmp_path: Path, port: str | int, message: str) -> None:
path = tmp_path / "config.toml"
port_literal = f'"{port}"' if isinstance(port, str) else str(port)
path.write_text(
f'[model]\nroot = "{tmp_path.as_posix()}"\ncheckpoint = "base.safetensors"\n'
f'[server]\ntransport = "streamable-http"\nport = {port_literal}\n',
encoding="utf-8",
)
with pytest.raises(ConfigError, match=message):
load_config(path, validate_paths=False)
def test_rejects_empty_host(tmp_path: Path) -> None:
path = tmp_path / "config.toml"
path.write_text(
f'[model]\nroot = "{tmp_path.as_posix()}"\ncheckpoint = "base.safetensors"\n'
'[server]\ntransport = "streamable-http"\nhost = ""\n',
encoding="utf-8",
)
with pytest.raises(ConfigError, match="host"):
load_config(path, validate_paths=False)
|
