Add unit tests for python scripts

.github/workflows/pytest.yml

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+on: [push, pull_request]
+name: Pytest
+jobs:
+  build:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [macos-latest]
+        python-version: ['3.7', '3.8' ,'3.9', '3.10', '3.11']
+      fail-fast: false
+    name: Python ${{ matrix.python-version }} ${{ matrix.os }} ${{ matrix.frontend }} build
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install requirements
+        run: |
+          pip install pytest
+      - name: Run pytest
+        run: python -m pytest
+

tests/config.py

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+# This is just an empty file

tests/simple_salesforce.py

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+# This is just a file to mock the import
+from unittest.mock import Mock
+
+Salesforce = Mock()

tests/test_transcodeEngine.py

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+import pathlib
+import pytest
+
+
+@pytest.mark.parametrize(
+    'file_path,expected_barcode',
+    [
+        (pathlib.Path('12345677890.mp4'), '5677890'),
+        (pathlib.Path('12346677890.mov'), '6677890'),
+    ]
+)
+def test_getBarcode(file_path, expected_barcode):
+    import transcodeEngine
+    assert transcodeEngine.getBarcode(str(file_path)) == expected_barcode
+