Import AITURK IDE 1.0.0-beta.1 from Hermes 63279301; preserve MIT license

tests/cli/conftest.py

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+"""Shared fixtures for CLI tests.
+
+prompt_toolkit / capsys isolation
+---------------------------------
+``cli._cprint`` renders through ``prompt_toolkit.print_formatted_text``,
+which — when called with no explicit ``output=`` — lazily creates an
+``Output`` from ``sys.stdout`` **and caches it on the process-global default
+``AppSession``** (``prompt_toolkit.application.current._current_app_session``,
+a ``ContextVar`` with a module-level default). The cache is keyed to nothing
+and never re-reads ``sys.stdout``.
+
+Under pytest, ``capsys`` swaps ``sys.stdout`` for a fresh buffer per test.
+So the first CLI test that emits through ``_cprint`` (e.g. one exercising
+``/queue``, which prints a "Queued: …" line) locks prompt_toolkit's cached
+output onto *its* captured stdout. Every later ``capsys`` test that asserts
+on ``_cprint`` output then reads an empty buffer, because the render went to
+the first test's now-dead capture target. That is the mechanism behind the
+order-dependent ``test_resume_quiet_stderr`` failure: it passes in isolation
+and in its own file, but fails in a full ``tests/cli`` run.
+
+Reset the cached output before every CLI test so each one re-creates a fresh
+prompt_toolkit ``Output`` bound to its own ``sys.stdout`` on first use. This
+is a no-op when prompt_toolkit isn't importable and cheap otherwise (the
+property re-creates lazily).
+"""
+
+import pytest
+
+
+@pytest.fixture(autouse=True)
+def _reset_prompt_toolkit_output_cache():
+    """Clear prompt_toolkit's cached AppSession output around each CLI test.
+
+    See the module docstring for the capsys/prompt_toolkit interaction this
+    guards against.
+    """
+
+    def _clear() -> None:
+        try:
+            from prompt_toolkit.application.current import get_app_session
+
+            get_app_session()._output = None
+        except Exception:
+            # prompt_toolkit not importable / internal shape changed — the
+            # tests that rely on this simply keep their prior behavior.
+            pass
+
+    _clear()
+    yield
+    _clear()