test(plugins): align repository imports with runtime namespace (#6368)

tests/test_testing_bootstrap_plugin_namespace.py

@@ -0,0 +1,49 @@
+"""验证插件仓测试引导复现生产运行时的插件导入命名空间。"""
+
+from importlib import import_module
+from pathlib import Path
+import sys
+
+import pytest
+
+from app.testing import bootstrap
+
+
+@pytest.mark.parametrize(
+    ("prepare_name", "source_dir"),
+    (
+        ("prepare_v1_backend", "plugins"),
+        ("prepare_v2_backend", "plugins.v2"),
+        ("prepare_v3_backend", "plugins.v3"),
+    ),
+)
+def test_prepare_plugin_backend_exposes_runtime_namespace(
+    tmp_path: Path,
+    monkeypatch: pytest.MonkeyPatch,
+    prepare_name: str,
+    source_dir: str,
+) -> None:
+    """市场仓源码只通过 ``app.plugins.<id>`` 规范身份导入。"""
+    plugin_id = f"namespace_probe_{source_dir.replace('.', '_')}"
+    plugin_dir = tmp_path / source_dir / plugin_id
+    plugin_dir.mkdir(parents=True)
+    (plugin_dir / "__init__.py").write_text(
+        f"PLUGIN_ID = {plugin_id!r}\n",
+        encoding="utf-8",
+    )
+
+    plugins_package = import_module("app.plugins")
+    monkeypatch.setattr(plugins_package, "__path__", list(plugins_package.__path__))
+    monkeypatch.setattr(bootstrap, "prepare_backend", lambda: None)
+
+    runtime_name = f"app.plugins.{plugin_id}"
+    try:
+        getattr(bootstrap, prepare_name)(tmp_path)
+
+        runtime = import_module(runtime_name)
+
+        assert Path(runtime.__file__).resolve() == plugin_dir / "__init__.py"
+        with pytest.raises(ModuleNotFoundError):
+            import_module(plugin_id)
+    finally:
+        sys.modules.pop(runtime_name, None)