78 lines
3.0 KiB
Python
78 lines
3.0 KiB
Python
# SPDX-License-Identifier: Apache-2.0
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"""Tests for the TTS adapter migration ratchet.
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The gate only earns its place if it actually catches the ways a per-model branch
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gets reintroduced. These pin what it detects — and, just as importantly, the one
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shape it is known to miss, so nobody mistakes it for an adversarial sandbox.
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"""
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from __future__ import annotations
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import ast
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import sys
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from pathlib import Path
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import pytest
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sys.path.insert(0, str(Path(__file__).resolve().parents[2] / "tools" / "pre_commit"))
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from check_tts_adapter import ( # noqa: E402
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MAX_MODEL_TYPE_BRANCHES,
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_model_type_branches,
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main,
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)
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pytestmark = [pytest.mark.core_model, pytest.mark.cpu]
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def _count(src: str) -> int:
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return len(_model_type_branches(ast.parse(src)))
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@pytest.mark.parametrize(
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("label", "src", "expected"),
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[
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("direct comparison", 'if self._tts_model_type == "foo": pass', 1),
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("negated comparison", 'if self._tts_model_type != "foo": pass', 1),
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("membership test", 'if self._tts_model_type in ("a", "b"): pass', 1),
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("local alias", 'kind = self._tts_model_type\nif kind == "foo": pass', 1),
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("getattr read", 'if getattr(self, "_tts_model_type") == "foo": pass', 1),
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("getattr with default", 'if getattr(self, "_tts_model_type", None) == "foo": pass', 1),
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("match statement counts each case", 'match self._tts_model_type:\n case "a": pass\n case _: pass', 2),
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("alias then match", 'k = getattr(self, "_tts_model_type")\nmatch k:\n case "a": pass', 1),
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("unrelated attribute is ignored", 'if self._other == "foo": pass', 0),
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("unrelated local is ignored", 'kind = self._backend\nif kind == "foo": pass', 0),
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],
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)
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def test_branch_detection(label, src, expected):
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assert _count(src) == expected, label
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def test_dict_dispatch_is_a_known_gap():
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"""Documented limitation, asserted so it is a decision and not a surprise.
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Table dispatch keyed on the model type reads as zero branches. The ratchet
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guards against drift in the shape people actually write; catching every
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indirection is a review question, not a lint one.
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"""
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assert _count('TABLE = {"foo": 1}\nvalue = TABLE[self._tts_model_type]') == 0
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def test_gate_passes_on_current_tree():
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"""The recorded budgets must match reality, or the ratchet is decorative."""
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assert main([]) == 0
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def test_budgets_are_not_exceeded():
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"""Budgets are a ceiling, not a target.
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This used to assert equality, which re-imposed through pytest exactly what
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#6008 removed from the checker: a PR that deleted branches failed CI unless
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it also hand-edited the constant. That is what broke `main` for 5h19m in
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#5746. The checker reports an under-budget count as a passing notice
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(check_tts_adapter.py:140); the test must agree.
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"""
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root = Path(__file__).resolve().parents[2]
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serving = root / "vllm_omni" / "entrypoints" / "openai" / "serving_speech.py"
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assert len(_model_type_branches(ast.parse(serving.read_text()))) <= MAX_MODEL_TYPE_BRANCHES
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