Made test find_backup_data. Unit tests make life so much easier

tests/test_backup_class.py

@@ -0,0 +1,12 @@
+import pytest
+from pathlib import Path
+
+from tibi_hardlinks.backup_parser import read_backup_properties
+from tibi_hardlinks.backups import find_backup_data, Backup
+
+
+@pytest.mark.parametrize(
+    "property_filepath", Path("../test_data/mock_backup_data").glob("*.properties")
+)
+def test_find_backup_data_on_files(property_filepath):
+    find_backup_data(property_filepath, read_backup_properties(property_filepath))