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# SPDX-FileCopyrightText: Copyright 2023, Arm Limited and/or its affiliates.
# SPDX-License-Identifier: Apache-2.0
"""Tests for module mlia.nn.rewrite.utils."""
from pathlib import Path
import pytest
import tensorflow as tf
from tensorflow.lite.python.schema_py_generated import ModelT
from mlia.nn.rewrite.core.utils.utils import load
from mlia.nn.rewrite.core.utils.utils import save
from tests.utils.rewrite import models_are_equal
def test_load_save(test_tflite_model: Path, tmp_path: Path) -> None:
"""Test the load/save functions for TensorFlow Lite models."""
with pytest.raises(FileNotFoundError):
load("THIS_IS_NOT_A_REAL_FILE")
model = load(test_tflite_model)
assert isinstance(model, ModelT)
assert model.subgraphs
output_file = tmp_path / "test.tflite"
assert not output_file.is_file()
save(model, output_file)
assert output_file.is_file()
model_copy = load(str(output_file))
assert models_are_equal(model, model_copy)
# Double check that the TensorFlow Lite Interpreter can still load the file.
tf.lite.Interpreter(model_path=str(output_file))
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