36df317293
Comment-only pass over the Python this PR touches: drop what the code already says, collapse multi-line explanations that still read on one line, and keep the reasoning that is not recoverable from the code. No code, docstring semantics or behaviour changes; verified with an AST comparison against the previous revision, and the backend suite is unchanged (same 37 environment failures as before: the API integration tests that need a live keyed server, the flash-attn install hooks, and the GPU memory fields).
73 lines
2.7 KiB
Python
73 lines
2.7 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-only
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# Copyright 2026-present the Unsloth AI Inc. team. All rights reserved. See /studio/LICENSE.AGPL-3.0
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"""Unit tests for the compiled GGUF dequant accelerator (``diffusion_gguf_compile.py``).
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Covers install/uninstall idempotency + exact reversibility, the kill-switch, and the
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on-by-default behaviour. Runs on CPU -- patching the module attribute is lazy
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(torch.compile only traces on the first real call).
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"""
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from __future__ import annotations
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import pytest
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torch = pytest.importorskip("torch")
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gguf_utils = pytest.importorskip("diffusers.quantizers.gguf.utils")
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from core.inference import diffusion_gguf_compile as gc # noqa: E402
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@pytest.fixture(autouse = True)
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def _clean():
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# Always start and end from a clean, unpatched state so tests do not leak the process-wide patch
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# into each other.
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gc.uninstall_all()
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yield
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gc.uninstall_all()
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def test_compiled_dequant_install_uninstall_reversible():
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orig = gguf_utils.dequantize_gguf_tensor
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assert gc.is_compiled_dequant_installed() is False
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assert gc.install_compiled_dequant() is True
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assert gc.is_compiled_dequant_installed() is True
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# The module attribute is now a different (compiled) callable...
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assert gguf_utils.dequantize_gguf_tensor is not orig
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# ...idempotent: a second install is a no-op, attribute unchanged.
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patched = gguf_utils.dequantize_gguf_tensor
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assert gc.install_compiled_dequant() is True
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assert gguf_utils.dequantize_gguf_tensor is patched
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gc.uninstall_compiled_dequant()
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assert gc.is_compiled_dequant_installed() is False
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# Exact original restored.
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assert gguf_utils.dequantize_gguf_tensor is orig
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# Uninstall is idempotent.
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gc.uninstall_compiled_dequant()
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assert gguf_utils.dequantize_gguf_tensor is orig
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def test_compiled_dequant_kill_switch(monkeypatch):
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monkeypatch.setenv("UNSLOTH_DIFFUSION_GGUF_COMPILE_DEQUANT", "0")
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orig = gguf_utils.dequantize_gguf_tensor
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assert gc.install_compiled_dequant() is False
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assert gc.is_compiled_dequant_installed() is False
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assert gguf_utils.dequantize_gguf_tensor is orig
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def test_compiled_dequant_on_by_default(monkeypatch):
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# The compiled dequant is the real win, so it is ON without any env opt-in.
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monkeypatch.delenv("UNSLOTH_DIFFUSION_GGUF_COMPILE_DEQUANT", raising = False)
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assert gc.install_compiled_dequant() is True
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assert gc.is_compiled_dequant_installed() is True
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def test_uninstall_all(monkeypatch):
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orig = gguf_utils.dequantize_gguf_tensor
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gc.install_compiled_dequant()
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assert gc.is_installed() is True
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gc.uninstall_all()
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assert gc.is_installed() is False
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assert gguf_utils.dequantize_gguf_tensor is orig
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