ImageManager及测试

pytests/image_sys_test/image_manager_test.py

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+import sys
+import types
+import importlib
+import pytest
+from pathlib import Path
+import importlib.util
+import asyncio
+
+
+class DummyLogger:
+    def info(self, *a, **k):
+        pass
+
+    def warning(self, *a, **k):
+        pass
+
+    def error(self, *a, **k):
+        pass
+
+
+class DummySession:
+    def exec(self, *a, **k):
+        class R:
+            def first(self):
+                return None
+
+            def yield_per(self, n):
+                return iter(())
+
+        return R()
+
+    def add(self, *a, **k):
+        pass
+
+    def flush(self, *a, **k):
+        pass
+
+    def delete(self, *a, **k):
+        pass
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc, tb):
+        return False
+
+
+class DummyMaiImage:
+    def __init__(self, full_path=None, image_bytes=None):
+        self.full_path = full_path
+        self.image_bytes = image_bytes
+        self.image_format = "png"
+        self.description = ""
+        self.vlm_processed = False
+
+    @classmethod
+    def from_db_instance(cls, record):
+        return cls()
+
+    def to_db_instance(self):
+        return types.SimpleNamespace(id=1, full_path=str(self.full_path) if self.full_path is not None else "")
+
+    async def calculate_hash_format(self):
+        return None
+
+
+class DummyLLMRequest:
+    def __init__(self, *a, **k):
+        pass
+
+    async def generate_response_for_image(self, prompt, image_base64, image_format, temp):
+        return ("dummy description", {})
+
+class DummySelect:
+    def __init__(self, *a, **k):
+        pass
+
+    def filter_by(self, *a, **k):
+        return self
+
+    def limit(self, n):
+        return self
+
+@pytest.fixture(autouse=True)
+def patch_external_dependencies(monkeypatch):
+    # Provide dummy implementations as modules so that importing image_manager is safe
+    # Patch LLMRequest
+    llm_mod = types.SimpleNamespace(LLMRequest=DummyLLMRequest)
+    monkeypatch.setitem(sys.modules, "src.llm_models.utils_model", llm_mod)
+
+    # Patch logger
+    logger_mod = types.SimpleNamespace(get_logger=lambda name: DummyLogger())
+    monkeypatch.setitem(sys.modules, "src.common.logger", logger_mod)
+
+    # Patch DB session provider
+    db_mod = types.SimpleNamespace(get_db_session=lambda: DummySession())
+    monkeypatch.setitem(sys.modules, "src.common.database.database", db_mod)
+
+    # Patch database model types
+    db_model_mod = types.SimpleNamespace(Images=types.SimpleNamespace, ImageType=types.SimpleNamespace(IMAGE="image"))
+    monkeypatch.setitem(sys.modules, "src.common.database.database_model", db_model_mod)
+
+    # Patch MaiImage data model
+    data_model_mod = types.SimpleNamespace(MaiImage=DummyMaiImage)
+    monkeypatch.setitem(sys.modules, "src.common.data_models.image_data_model", data_model_mod)
+ 
+    # Patch SQLModel select function
+    sql_mod = types.SimpleNamespace(select=lambda *a, **k: DummySelect())
+    monkeypatch.setitem(sys.modules, "sqlmodel", sql_mod)
+    
+    # Patch config values used at import-time
+    cfg = types.SimpleNamespace(personality=types.SimpleNamespace(visual_style="test-style"))
+    model_cfg = types.SimpleNamespace(model_task_config=types.SimpleNamespace(vlm="test-vlm"))
+    config_mod = types.SimpleNamespace(global_config=cfg, model_config=model_cfg)
+    monkeypatch.setitem(sys.modules, "src.config.config", config_mod)
+
+    # If module already imported, reload it to apply patches
+    mod_name = "src.chat.image_system.image_manager"
+    if mod_name in sys.modules:
+        importlib.reload(sys.modules[mod_name])
+
+    yield
+
+
+def _load_image_manager_module(tmp_path=None):
+    repo_root = Path(__file__).parent.parent.parent
+    file_path = repo_root / "src" / "chat" / "image_system" / "image_manager.py"
+    spec = importlib.util.spec_from_file_location("image_manager_test_loaded", str(file_path))
+    mod = importlib.util.module_from_spec(spec)
+    sys.modules[spec.name] = mod
+    spec.loader.exec_module(mod)
+    # Redirect IMAGE_DIR to pytest's tmp_path when provided
+    try:
+        if tmp_path is not None:
+            tmpdir = Path(tmp_path)
+            tmpdir.mkdir(parents=True, exist_ok=True)
+            setattr(mod, "IMAGE_DIR", tmpdir)
+    except Exception:
+        pass
+    return mod
+
+
+@pytest.mark.asyncio
+async def test_get_image_description_generates(tmp_path):
+    image_manager = _load_image_manager_module(tmp_path)
+
+    mgr = image_manager.ImageManager()
+    desc = await mgr.get_image_description(image_bytes=b"abc")
+    assert desc == "dummy description"
+
+
+def test_get_image_from_db_none(tmp_path):
+    image_manager = _load_image_manager_module(tmp_path)
+
+    mgr = image_manager.ImageManager()
+    assert mgr.get_image_from_db("nohash") is None
+
+
+def test_register_image_to_db(tmp_path):
+    image_manager = _load_image_manager_module(tmp_path)
+
+    mgr = image_manager.ImageManager()
+    p = tmp_path / "img.png"
+    p.write_bytes(b"data")
+    img = DummyMaiImage(full_path=p, image_bytes=b"data")
+    assert mgr.register_image_to_db(img) is True
+
+
+def test_update_image_description_not_found(tmp_path):
+    image_manager = _load_image_manager_module(tmp_path)
+
+    mgr = image_manager.ImageManager()
+    img = DummyMaiImage()
+    img.file_hash = "nohash"
+    img.description = "desc"
+    assert mgr.update_image_description(img) is False
+
+
+def test_delete_image_not_found(tmp_path):
+    image_manager = _load_image_manager_module(tmp_path)
+
+    mgr = image_manager.ImageManager()
+    img = DummyMaiImage()
+    img.file_hash = "nohash"
+    img.full_path = tmp_path = None
+    assert mgr.delete_image(img) is False
+
+
+@pytest.mark.asyncio
+async def test_save_image_and_process_and_cleanup(tmp_path):
+    image_manager = _load_image_manager_module(tmp_path)
+
+    mgr = image_manager.ImageManager()
+    # call save_image_and_process
+    image = await mgr.save_image_and_process(b"binarydata")
+    assert getattr(image, "description", None) == "dummy description"
+
+    # cleanup should run without error
+    mgr.cleanup_invalid_descriptions_in_db()
+