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aiturk-hermes-ide/tests/tools/test_image_generate_schema.py
T

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"""image_generate dynamic schema — capability-gated params (#95681 diet).
Contract: args the active model cannot honor are NOT advertised. Coverage
is guaranteed two ways — every in-tree FAL catalog entry must declare the
capability keys the schema builder reads (test below fails when a new
model is added without them), and the plugin provider ABC's capabilities()
default fails closed to text-only/no-upscale.
"""
import json
import os
import sys
import unittest
from unittest.mock import patch
sys.path.insert(0, os.path.join(os.path.dirname(__file__), "..", ".."))
import tools.image_generation_tool as ig
from tools.image_generation_tool import (
FAL_MODELS,
IMAGE_GENERATE_SCHEMA,
_build_dynamic_image_schema,
)
class TestCatalogCapabilityCoverage(unittest.TestCase):
"""Every FAL catalog entry must carry what the schema builder reads."""
def test_every_model_declares_capability_keys(self):
for model_id, meta in FAL_MODELS.items():
with self.subTest(model=model_id):
# upscale default flag must be present and boolean.
self.assertIn("upscale", meta, model_id)
self.assertIsInstance(meta["upscale"], bool, model_id)
# Edit-capable models must cap their reference images.
if meta.get("edit_endpoint"):
self.assertIn("max_reference_images", meta, model_id)
self.assertGreaterEqual(
int(meta["max_reference_images"]), 1, model_id,
)
def test_provider_abc_default_fails_closed(self):
from agent.image_gen_provider import ImageGenProvider
caps_src = ImageGenProvider.capabilities
# Instantiate via a minimal concrete subclass.
class _P(ImageGenProvider):
name = "t"
display_name = "T"
def generate(self, prompt, aspect_ratio="landscape", **kw):
return {}
def list_models(self):
return []
caps = _P().capabilities()
self.assertEqual(caps.get("modalities"), ["text"])
self.assertFalse(caps.get("supports_upscale", False))
def test_every_intree_plugin_declares_what_it_implements(self):
"""Fleet-wide declaration ⇄ implementation contract (maintainer
requirement: EVERY provider combo must carry capability info).
For each in-tree image_gen plugin: if its generate() source
implements an upscale pass, capabilities() must declare
supports_upscale — and vice versa, so a stale declaration can't
advertise an upscale that silently no-ops. modalities and
max_reference_images must always be declared."""
import ast
import pathlib
plugins_dir = (pathlib.Path(__file__).resolve().parents[2]
/ "plugins" / "image_gen")
assert plugins_dir.is_dir(), plugins_dir
checked = 0
for plugin in sorted(plugins_dir.iterdir()):
src_file = plugin / "__init__.py"
if not src_file.is_file():
continue
src = src_file.read_text(encoding="utf-8")
if "def capabilities" not in src:
continue
checked += 1
with self.subTest(provider=plugin.name):
# capabilities() must declare the two mandatory axes.
self.assertIn("modalities", src, plugin.name)
self.assertIn("max_reference_images", src, plugin.name)
# upscale: declaration ⇄ implementation, both directions.
declares = "supports_upscale" in src
# Implementation = generate() (or its helpers in the same
# file) reads the upscale kwarg directly, or passes it
# through in a delegation whitelist (fal plugin → in-tree
# Clarity chain).
implements = ('kwargs.get("upscale")' in src
or "upscale_requested" in src
or 'kwargs["upscale"]' in src
or "def _upscale" in src
or '"upscale",' in src)
self.assertEqual(
declares, implements,
f"{plugin.name}: supports_upscale declaration "
f"({declares}) != implementation ({implements}) — "
"declare it in capabilities() iff generate() honors it",
)
# The audit must actually have covered the fleet.
self.assertGreaterEqual(checked, 6, "plugin sweep found too few providers")
class TestDynamicParamGating(unittest.TestCase):
def _schema_for(self, model_id):
with patch.object(ig, "_resolve_fal_model",
return_value=(model_id, FAL_MODELS[model_id])), \
patch.object(ig, "_read_configured_image_provider",
return_value=None):
return _build_dynamic_image_schema()
def _t2i_only(self):
return next(m for m, meta in FAL_MODELS.items()
if not meta.get("edit_endpoint"))
def _edit_multi_ref(self):
return next(m for m, meta in FAL_MODELS.items()
if meta.get("edit_endpoint")
and int(meta.get("max_reference_images") or 0) > 1)
def test_t2i_only_model_hides_edit_args(self):
schema = self._schema_for(self._t2i_only())
props = schema["parameters"]["properties"]
self.assertNotIn("image_url", props)
self.assertNotIn("reference_image_urls", props)
self.assertIn("cannot edit", schema["description"])
def test_edit_model_advertises_edit_args_with_cap(self):
model = self._edit_multi_ref()
schema = self._schema_for(model)
props = schema["parameters"]["properties"]
self.assertIn("image_url", props)
self.assertIn("reference_image_urls", props)
self.assertEqual(
props["reference_image_urls"]["maxItems"],
int(FAL_MODELS[model]["max_reference_images"]),
)
def test_fal_always_advertises_upscale(self):
# Clarity Upscaler chains for any FAL model on explicit request.
for model in (self._t2i_only(), self._edit_multi_ref()):
schema = self._schema_for(model)
self.assertIn("upscale", schema["parameters"]["properties"], model)
def test_text_only_plugin_provider_hides_edit_and_upscale(self):
class _Prov:
display_name = "Codex Images"
def capabilities(self):
return {"modalities": ["text"], "max_reference_images": 0}
def default_model(self):
return "img-1"
with patch.object(ig, "_read_configured_image_provider",
return_value="codex"), \
patch("agent.image_gen_registry.get_provider",
return_value=_Prov()), \
patch("hermes_cli.plugins._ensure_plugins_discovered"):
schema = _build_dynamic_image_schema()
props = schema["parameters"]["properties"]
self.assertEqual(sorted(props), ["aspect_ratio", "prompt"])
self.assertNotIn("upscale", props)
def test_static_schema_carries_no_capability_args(self):
"""The registration-time placeholder must stay minimal — dynamic
overrides own the capability args (do-not-re-add guard)."""
props = IMAGE_GENERATE_SCHEMA["parameters"]["properties"]
self.assertEqual(sorted(props), ["aspect_ratio", "prompt"])
def test_handler_still_rejects_unadvertised_edit_with_teaching_error(self):
"""Wire compat: image_url on a t2i-only model is accepted by the
handler and answered with the capability error (not a schema-level
unknown-arg failure). Pin the error text's presence in the source."""
import inspect
handler_src = inspect.getsource(ig)
self.assertIn("capable of image-to-image / editing", handler_src)
self.assertIn("omit image_url", handler_src)
if __name__ == "__main__":
unittest.main()