test: Add unittest for hex to color

Author: Sigmanificient

tests/test_colour.py

@@ -1,3 +1,5 @@
+import pytest
+
 from catppuccin.colour import Colour
 
 
@@ -7,3 +9,21 @@ def test_colour_to_rgb():
 
 def test_colour_to_hex():
     assert Colour(0x12, 0xEB, 0x77).hex == "12eb77"
+
+
+def test_hex_to_color():
+    assert Colour.from_hex("12eb77") == Colour(0x12, 0xEB, 0x77)
+
+
+def test_invalid_hex():
+    for invalid_value in ("1234567", "12345", "Z00000", "ABCDEG", "0F7CBJ"):
+        with pytest.raises(ValueError):
+            assert Colour.from_hex(invalid_value)
+
+
+def test_equality():
+    assert Colour.from_hex("12eb77") == Colour.from_hex("12eb77")
+    assert Colour(0x12, 0xEB, 0x77) == Colour(0x12, 0xEB, 0x77)
+
+    with pytest.raises(ValueError):
+        assert Colour(0x12, 0xEB, 0x77) == 42