colors: Darken bg if contrast is too low.

1 files changed, 19 insertions, 9 deletions

diff --git a/tests/test_util.py b/tests/test_util.py
index b1fa704..5f8e26d 100755
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -64,23 +64,33 @@ class TestUtil(unittest.TestCase):
     def test_hex_to_rgb_black(self):
         """> Convert #000000 to RGB."""
         result = util.hex_to_rgb("#000000")
-        self.assertEqual(result, "0,0,0")
+        self.assertEqual(result, (0, 0, 0))
 
     def test_hex_to_rgb_white(self):
-        """> Convert #FFFFFF to RGB."""
-        result = util.hex_to_rgb("#FFFFFF")
-        self.assertEqual(result, "255,255,255")
+        """> Convert #ffffff to RGB."""
+        result = util.hex_to_rgb("#ffffff")
+        self.assertEqual(result, (255, 255, 255))
 
     def test_hex_to_rgb_rand(self):
-        """> Convert #98AEC2 to RGB."""
-        result = util.hex_to_rgb("#98AEC2")
-        self.assertEqual(result, "152,174,194")
+        """> Convert #98aec2 to RGB."""
+        result = util.hex_to_rgb("#98aec2")
+        self.assertEqual(result, (152, 174, 194))
 
     def test_hex_to_xrgba(self):
-        """> Convert #98AEC2 to XRGBA."""
-        result = util.hex_to_xrgba("#98AEC2")
+        """> Convert #98aec2 to XRGBA."""
+        result = util.hex_to_xrgba("#98aec2")
         self.assertEqual(result, "98/ae/c2/ff")
 
+    def test_rgb_to_hex(self):
+        """> Convert 152,174,194 to HEX."""
+        result = util.rgb_to_hex((152, 174, 194))
+        self.assertEqual(result, "#98aec2")
+
+    def test_darken_color(self):
+        """> Darken #ffffff by 0.25."""
+        result = util.darken_color("#ffffff", 0.25)
+        self.assertEqual(result, "#bfbfbf")
+
 
 if __name__ == "__main__":
     unittest.main()