Publish curated ITWorx-ModelForge source from 990401737f96c8d46a9f7b0d84994516cadcb6a0

backend/tests/http_contract_fakes.py

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+"""Opt-in HTTP fixture: real middleware/routes, no ambient startup or database."""
+from collections.abc import AsyncIterator, Iterator
+from contextlib import asynccontextmanager
+
+import pytest
+from fastapi import FastAPI
+
+from modelforge_api.db import engine as ambient_engine
+from modelforge_api.main import app
+
+
+@pytest.fixture
+def isolated_http_contract(monkeypatch: pytest.MonkeyPatch) -> Iterator[None]:
+    # These exercise the real HTTP stack with fake collectors, not application startup.
+    # Do not run reconciliation, schema validation or background polling against .env.
+    @asynccontextmanager
+    async def contract_lifespan(_app: FastAPI) -> AsyncIterator[None]:
+        yield
+
+    ambient_connections: list[str] = []
+
+    def reject_ambient_connection(*args: object, **kwargs: object) -> None:
+        ambient_connections.append("connection attempted")
+        raise AssertionError("HTTP contract tests must not use the ambient database")
+
+    monkeypatch.setattr(ambient_engine, "connect", reject_ambient_connection)
+    monkeypatch.setattr(ambient_engine, "raw_connection", reject_ambient_connection)
+    monkeypatch.setattr(app.router, "lifespan_context", contract_lifespan)
+    # Restore the original mapping (including other tests' overrides) on teardown.
+    monkeypatch.setattr(app, "dependency_overrides", {})
+    yield
+    assert not ambient_connections