added rain, updated graph styles

tests/test_rrd.py

@@ -1,11 +1,27 @@
 from netatmo_service.data import Sample
-from netatmo_service.rrd import RRDStore
+from netatmo_service.rrd import RRDStore, rainbow
+
+
+def test_wind_rainbow_uses_compass_angle():
+    assert rainbow(0) == (0, 255, 255)
+    assert rainbow(90) == (128, 0, 255)
+    assert rainbow(180) == (255, 0, 0)
+    assert rainbow(270) == (128, 255, 0)
+
+
+def test_each_wind_angle_has_an_unlabelled_color():
+    drawings = RRDStore._wind_drawings()
+    assert len(drawings) == 722
+    assert sum(item.startswith("AREA:dir") for item in drawings) == 360
+    assert not any("degrees" in item for item in drawings)
 
 
 def test_rrd_files_have_netatmo_prefix(tmp_path):
     store = RRDStore(tmp_path)
     assert store.path("outdoor") == tmp_path / "netatmo_outdoor.rrd"
     assert store.path("wind") == tmp_path / "netatmo_wind.rrd"
+    assert store.path("rain") == tmp_path / "netatmo_rain.rrd"
+    assert store.path("pressure") == tmp_path / "netatmo_pressure.rrd"
 
 
 def test_rrd_is_updated_only_once_per_collection_interval(tmp_path):