fix an issue where the text would not be vertically centered

tests/test_functions.py

@@ -1,12 +1,22 @@
 """
 Test the functions in the functions module.
 """
+import unittest
+
 from PIL import Image, ImageFont
-from inkycal.custom import write, fonts
+
+from inkycal.custom import write, fonts, get_system_tz
 
 
-def test_write():
-    im = Image.new("RGB", (500, 200), "white")
-    font = ImageFont.truetype(fonts['NotoSans-SemiCondensed'], size = 40)
-    write(im, (125,75), (250, 50), "Hello World", font)
-    # im.show()
+class TestIcalendar(unittest.TestCase):
+
+    def test_write(self):
+        im = Image.new("RGB", (500, 200), "white")
+        font = ImageFont.truetype(fonts['NotoSans-SemiCondensed'], size=40)
+        write(im, (125, 75), (250, 50), "Hello World", font)
+        # im.show()
+
+    def test_get_system_tz(self):
+        tz = get_system_tz()
+        assert isinstance(tz, str)
+

tests/test_inkycal_calendar.py

@@ -20,7 +20,7 @@ tests = [
     {
         "name": "Calendar",
         "config": {
-            "size": [500, 500],
+            "size": [500, 600],
             "week_starts_on": "Monday",
             "show_events": True,
             "ical_urls": sample_url,