feat: add tests, update configs, fix state.py return, update gitignore

tests/test_diff.py

@@ -0,0 +1,73 @@
+from diff import parse_ics_events, compute_diff, parse_ics_events_with_data
+
+class TestParseIcsEvents:
+    def test_parse_basic(self, ics_sample):
+        result = parse_ics_events(ics_sample)
+        assert "evt-001@test.com" in result
+        assert "evt-002@test.com" in result
+        assert len(result) == 2
+
+    def test_parse_no_uid(self):
+        ics = """BEGIN:VCALENDAR
+VERSION:2.0
+BEGIN:VEVENT
+DTSTAMP:20240101T000000Z
+DTSTART:20240101T100000Z
+SUMMARY:No UID
+END:VEVENT
+END:VCALENDAR"""
+        result = parse_ics_events(ics)
+        assert len(result) == 0
+
+    def test_hashes_are_sha256(self, ics_sample):
+        result = parse_ics_events(ics_sample)
+        for uid, h in result.items():
+            assert len(h) == 64
+            int(h, 16)
+
+    def test_same_event_same_hash(self, ics_sample):
+        r1 = parse_ics_events(ics_sample)
+        r2 = parse_ics_events(ics_sample)
+        for uid in r1:
+            assert r1[uid] == r2[uid]
+
+    def test_modified_event_different_hash(self, ics_sample, ics_sample_modified):
+        r1 = parse_ics_events(ics_sample)
+        r2 = parse_ics_events(ics_sample_modified)
+        assert r1["evt-001@test.com"] != r2["evt-001@test.com"]
+
+class TestComputeDiff:
+    def test_no_changes(self, ics_sample):
+        ics_uids = parse_ics_events(ics_sample)
+        deltas = compute_diff(ics_uids, ics_uids)
+        assert len(deltas["to_add"]) == 0
+        assert len(deltas["to_update"]) == 0
+        assert len(deltas["to_delete"]) == 0
+
+    def test_add_events(self, ics_sample, ics_sample_modified):
+        original = parse_ics_events(ics_sample)
+        modified = parse_ics_events(ics_sample_modified)
+        deltas = compute_diff(modified, original)
+        assert ("evt-003@test.com", modified["evt-003@test.com"]) in deltas["to_add"]
+
+    def test_delete_events(self, ics_sample, ics_sample_modified):
+        original = parse_ics_events(ics_sample)
+        modified = parse_ics_events(ics_sample_modified)
+        deltas = compute_diff(modified, original)
+        assert "evt-002@test.com" in deltas["to_delete"]
+
+    def test_update_events(self, ics_sample, ics_sample_modified):
+        original = parse_ics_events(ics_sample)
+        modified = parse_ics_events(ics_sample_modified)
+        deltas = compute_diff(modified, original)
+        uid, new_hash = deltas["to_update"][0]
+        assert uid == "evt-001@test.com"
+        assert new_hash == modified["evt-001@test.com"]
+
+class TestParseIcsEventsWithData:
+    def test_returns_bytes(self, ics_sample):
+        result = parse_ics_events_with_data(ics_sample)
+        assert len(result) == 2
+        for uid, data in result.items():
+            assert isinstance(data, bytes)
+            assert b"VEVENT" in data