MLIA-843 Add unit tests for module mlia.nn.rewrite

Note: The unit tests mostly call the main functions from the respective
modules only.

Change-Id: Ib2ce5c53d0c3eb222b8b8be42fba33ac8e007574
Signed-off-by: Benjamin Klimczak <benjamin.klimczak@arm.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/tests/test_nn_rewrite_core_graph_edit_cut.py b/tests/test_nn_rewrite_core_graph_edit_cut.py
new file mode 100644
index 0000000..914fdfd
--- /dev/null
+++ b/tests/test_nn_rewrite_core_graph_edit_cut.py
@@ -0,0 +1,29 @@
+# SPDX-FileCopyrightText: Copyright 2023, Arm Limited and/or its affiliates.
+# SPDX-License-Identifier: Apache-2.0
+"""Tests for module mlia.nn.rewrite.graph_edit.cut."""
+from pathlib import Path
+
+import numpy as np
+import tensorflow as tf
+
+from mlia.nn.rewrite.core.graph_edit.cut import cut_model
+
+
+def test_cut_model(test_tflite_model: Path, tmp_path: Path) -> None:
+    """Test the function cut_model()."""
+    output_file = tmp_path / "out.tflite"
+    cut_model(
+        model_file=test_tflite_model,
+        input_names=["serving_default_input:0"],
+        output_names=["sequential/flatten/Reshape"],
+        subgraph_index=0,
+        output_file=output_file,
+    )
+    assert output_file.is_file()
+
+    interpreter = tf.lite.Interpreter(model_path=str(output_file))
+    output_details = interpreter.get_output_details()
+    assert len(output_details) == 1
+    out = output_details[0]
+    assert "Reshape" in out["name"]
+    assert np.prod(out["shape"]) == 1728