feat: serialize profiles with day/night tagging

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

1 files changed, 28 insertions, 1 deletions

diff --git a/tests/test_config.py b/tests/test_config.py
index 4568160..62acd97 100644
--- a/tests/test_config.py
+++ b/tests/test_config.py
@@ -1,4 +1,4 @@
-from hyprsunset_qt.config import Profile, parse_config
+from hyprsunset_qt.config import Profile, parse_config, serialize, day_index, night_index
 
 
 def test_parse_two_profiles():
@@ -23,3 +23,30 @@ profile {
 
 def test_parse_empty():
     assert parse_config("") == []
+
+
+def test_serialize_roundtrip():
+    profiles = [
+        Profile(time="5:00", identity=True),
+        Profile(time="19:40", temperature=5500, gamma=0.8),
+    ]
+    text = serialize(profiles)
+    assert parse_config(text) == profiles
+    assert "identity = true" in text
+    assert "temperature = 5500" in text
+    assert "gamma = 0.8" in text
+    assert text.startswith("# Managed by hyprsunset-qt")
+
+
+def test_day_night_index():
+    profiles = [
+        Profile(time="5:00", identity=True),
+        Profile(time="19:40", temperature=5500, gamma=0.8),
+    ]
+    assert day_index(profiles) == 0
+    assert night_index(profiles) == 1
+
+
+def test_day_night_index_missing():
+    assert day_index([Profile(time="1:00", temperature=4000)]) is None
+    assert night_index([Profile(time="1:00", identity=True)]) is None