Adding unit test for checking the copyright headers and removing the check_copyright_headers in ci_tools

tests/test_check_copyright_headers.py

@@ -0,0 +1,27 @@
+# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from pathlib import Path
+
+import pytest
+
+HEADER = """# Copyright (c) 2024, NVIDIA CORPORATION.  All rights reserved."""
+PY_FILES = [p for p in Path().rglob("**/*.py") if "venv" not in str(p)]
+
+
+@pytest.mark.parametrize("py_file", PY_FILES, ids=[str(f) for f in PY_FILES])
+def test_check_copyright_header(py_file):
+    with open(py_file, "r") as file:
+        first_line = file.readline().strip()
+    assert first_line == HEADER