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# SPDX-FileCopyrightText: Copyright 2022, Arm Limited and/or its affiliates.
# SPDX-License-Identifier: Apache-2.0
"""Test for module utils/test_utils."""
from pathlib import Path
import pytest
import tensorflow as tf
from mlia.nn.tensorflow.utils import convert_to_tflite
from mlia.nn.tensorflow.utils import get_tf_tensor_shape
from mlia.nn.tensorflow.utils import is_keras_model
from mlia.nn.tensorflow.utils import is_tflite_model
from mlia.nn.tensorflow.utils import save_keras_model
from mlia.nn.tensorflow.utils import save_tflite_model
def test_convert_to_tflite(test_keras_model: Path) -> None:
"""Test converting Keras model to TFLite."""
keras_model = tf.keras.models.load_model(str(test_keras_model))
tflite_model = convert_to_tflite(keras_model)
assert tflite_model
def test_save_keras_model(tmp_path: Path, test_keras_model: Path) -> None:
"""Test saving Keras model."""
keras_model = tf.keras.models.load_model(str(test_keras_model))
temp_file = tmp_path / "test_model_saving.h5"
save_keras_model(keras_model, temp_file)
loaded_model = tf.keras.models.load_model(temp_file)
assert loaded_model.summary() == keras_model.summary()
def test_save_tflite_model(tmp_path: Path, test_keras_model: Path) -> None:
"""Test saving TFLite model."""
keras_model = tf.keras.models.load_model(str(test_keras_model))
tflite_model = convert_to_tflite(keras_model)
temp_file = tmp_path / "test_model_saving.tflite"
save_tflite_model(tflite_model, temp_file)
interpreter = tf.lite.Interpreter(model_path=str(temp_file))
assert interpreter
@pytest.mark.parametrize(
"model_path, expected_result",
[
[Path("sample_model.tflite"), True],
[Path("strange_model.tflite.tfl"), False],
[Path("sample_model.h5"), False],
[Path("sample_model"), False],
],
)
def test_is_tflite_model(model_path: Path, expected_result: bool) -> None:
"""Test function is_tflite_model."""
result = is_tflite_model(model_path)
assert result == expected_result
@pytest.mark.parametrize(
"model_path, expected_result",
[
[Path("sample_model.h5"), True],
[Path("strange_model.h5.keras"), False],
[Path("sample_model.tflite"), False],
[Path("sample_model"), False],
],
)
def test_is_keras_model(model_path: Path, expected_result: bool) -> None:
"""Test function is_keras_model."""
result = is_keras_model(model_path)
assert result == expected_result
def test_get_tf_tensor_shape(test_tf_model: Path) -> None:
"""Test get_tf_tensor_shape with test model."""
assert get_tf_tensor_shape(str(test_tf_model)) == [1, 28, 28, 1]
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