Implement unit testing (#107)

Author: StanFromIreland

.github/workflows/run-tests.yml

@@ -0,0 +1,19 @@
+name: Run test suite
+on:
+  pull_request:
+  workflow_dispatch:
+  push:
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+      - run: pip install -r requirements.txt
+      - run: python -m unittest discover -s tests

tests/support.py

@@ -0,0 +1,25 @@
+import sys
+import contextlib
+
+# -------------------------------- Imports ----------------------------------- #
+
+
+# Support functions borrowed from CPython's test.support
+@contextlib.contextmanager
+def import_scripts(dir='..'):
+    with DirsOnSysPath(dir) as cm:
+        yield cm
+
+
+class DirsOnSysPath(object):
+    def __init__(self, *paths):
+        self.original_value = sys.path[:]
+        self.original_object = sys.path
+        sys.path.extend(paths)
+
+    def __enter__(self):
+        return self
+
+    def __exit__(self, *ignore_exc):
+        sys.path = self.original_object
+        sys.path[:] = self.original_value

tests/test_build_status.py

@@ -0,0 +1,27 @@
+import unittest
+import support
+
+from urllib3 import PoolManager
+
+with support.import_scripts():
+    import build_status
+
+
+class testBuildStatus(unittest.TestCase):
+    def test_get_languages(self):
+        result = {
+            language: translated_name
+            for language, translated_name in build_status.get_languages(PoolManager())
+        }
+
+        self.assertIn('en', result)
+        self.assertIn('pl', result)
+        self.assertIn('zh-cn', result)
+
+        self.assertEqual(result.get('en'), None)
+        self.assertEqual(result.get('pl'), 'polski')
+        self.assertEqual(result.get('zh-cn'), '简体中文')
+
+
+if __name__ == '__main__':
+    unittest.main()