chore: import upstream snapshot with attribution

tests/cli/test_init_wizard_probe.py

@@ -0,0 +1,76 @@
+from __future__ import annotations
+
+from types import SimpleNamespace
+
+
+class _FakeClient:
+    captured: list[dict] = []
+
+    def __init__(self, *, timeout: float):
+        self.timeout = timeout
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *_args):
+        return None
+
+    def post(self, url: str, *, headers: dict, json: dict):
+        self.captured.append({"url": url, "headers": headers, "json": json})
+        return SimpleNamespace(status_code=200, text="")
+
+
+def test_probe_llm_uses_max_completion_tokens_for_gpt5(monkeypatch) -> None:
+    from deeptutor_cli import init_wizard
+
+    _FakeClient.captured = []
+    monkeypatch.setattr(init_wizard.httpx, "Client", _FakeClient)
+
+    ok, _elapsed_ms, error = init_wizard.probe_llm(
+        base_url="https://example.test/v1",
+        api_key="sk-test",
+        binding="openai",
+        model="gpt-5-mini",
+    )
+
+    assert ok is True
+    assert error == ""
+    body = _FakeClient.captured[0]["json"]
+    assert body["max_completion_tokens"] == 1
+    assert "max_tokens" not in body
+
+
+def test_probe_llm_keeps_max_tokens_for_legacy_chat_models(monkeypatch) -> None:
+    from deeptutor_cli import init_wizard
+
+    _FakeClient.captured = []
+    monkeypatch.setattr(init_wizard.httpx, "Client", _FakeClient)
+
+    init_wizard.probe_llm(
+        base_url="https://example.test/v1",
+        api_key="sk-test",
+        binding="openai",
+        model="gpt-3.5-turbo",
+    )
+
+    body = _FakeClient.captured[0]["json"]
+    assert body["max_tokens"] == 1
+    assert "max_completion_tokens" not in body
+
+
+def test_probe_llm_keeps_anthropic_native_max_tokens(monkeypatch) -> None:
+    from deeptutor_cli import init_wizard
+
+    _FakeClient.captured = []
+    monkeypatch.setattr(init_wizard.httpx, "Client", _FakeClient)
+
+    init_wizard.probe_llm(
+        base_url="https://api.anthropic.test/v1",
+        api_key="sk-test",
+        binding="anthropic",
+        model="claude-sonnet-4",
+    )
+
+    body = _FakeClient.captured[0]["json"]
+    assert body["max_tokens"] == 1
+    assert "max_completion_tokens" not in body