add github test action and add pytest

.github/workflows/extract_otp_secret_keys.yml

@@ -0,0 +1,35 @@
+name: extract_otp_secret_keys
+
+on: [push]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: ["3.7", "3.8", "3.9", "3.10"]
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.python-version }}
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install flake8 pytest
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+      - name: Lint with flake8
+        run: |
+          # stop the build if there are Python syntax errors or undefined names
+          flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
+          # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
+          flake8 . --count --exit-zero --max-complexity=10 --max-line-length=127 --statistics
+      - name: Test with pytest
+        run: |
+          pytest
+      - name: Test with unittest
+        run: |
+          python -m unittest

README.md

@@ -63,7 +63,9 @@ Install [devbox](https://github.com/jetpack-io/devbox), which is a wrapper for n
 devbox shell
 ```
 
-## Unit Tests
+## Tests
+
+### unittest
 
 There are basic unit tests, see `unittest_extract_otp_secret_keys.py`.
 
@@ -72,3 +74,18 @@ Run unit tests:
 ```
 python -m unittest
 ```
+
+### PyTest
+
+There are basic pytests, see `test_extract_otp_secret_keys.py`.
+
+Run pytests:
+
+```
+pytest unittest
+```
+or
+
+```
+python -m pytest
+```

test_extract_otp_secret_keys_pytest.py

@@ -0,0 +1,77 @@
+# pytest for extract_otp_secret_keys.py
+
+# Run tests:
+# pytest
+
+# Author: Scito (https://scito.ch)
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+import csv
+import json
+import os
+
+import extract_otp_secret_keys
+
+def test_extract_csv():
+    # Arrange
+    cleanup()
+
+    # Act
+    extract_otp_secret_keys.main(['-q', '-c', 'test_example_output.csv', 'example_export.txt'])
+
+    # Assert
+    expected_csv = read_csv('example_output.csv')
+    actual_csv = read_csv('test_example_output.csv')
+
+    assert actual_csv == actual_csv
+
+    # Clean up
+    cleanup()
+
+def test_extract_json():
+    # Arrange
+    cleanup()
+
+    # Act
+    extract_otp_secret_keys.main(['-q', '-j', 'test_example_output.json', 'example_export.txt'])
+
+    expected_json = read_json('example_output.json')
+    actual_json = read_json('test_example_output.json')
+
+    assert actual_json == expected_json
+
+    # Clean up
+    cleanup()
+
+def cleanup():
+    remove_file('test_example_output.csv')
+    remove_file('test_example_output.json')
+
+def remove_file(filename):
+    if os.path.exists(filename): os.remove(filename)
+
+def read_csv(filename):
+    """Returns a list of lines."""
+    with open(filename, "r") as infile:
+        lines = []
+        reader = csv.reader(infile)
+        for line in reader:
+            lines.append(line)
+        return lines
+
+def read_json(filename):
+    """Returns a list or a dictionary."""
+    with open(filename, "r") as infile:
+        return json.load(infile)