feat: initial commit

tests/unit/test_pair.py

@@ -0,0 +1,13 @@
+from secretsanta.domain import Group
+from tests.unit.conftest import GroupFactory
+
+
+def test_pair(group):
+    group.pairs = Group.pair(group.participants)
+
+    assert len(group.pairs) == len(
+        group.participants
+    ), "Number of pairs does not match participants"
+
+    for k, v in group.pairs.items():
+        assert k != v, "Self-pairings are not allowed"