t/t4026-color: add test coverage for invalid RGB colors

Make sure that the RGB color parser rejects invalid characters and
invalid lengths.

Signed-off-by: Beat Bolli <dev+git@drbeat.li>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/t/t4026-color.sh b/t/t4026-color.sh
index 37622451fc23bcd2dbc6f2015954c2842efc07bb..c4113803198980dce731f7b27d0f28b6f5d21c55 100755 (executable)
--- a/t/t4026-color.sh
+++ b/t/t4026-color.sh
@@ -140,6 +140,24 @@ test_expect_success 'extra character after attribute' '
        invalid_color "dimX"
 '
 
+test_expect_success 'non-hex character in RGB color' '
+       invalid_color "#x23456" &&
+       invalid_color "#1x3456" &&
+       invalid_color "#12x456" &&
+       invalid_color "#123x56" &&
+       invalid_color "#1234x6" &&
+       invalid_color "#12345x"
+'
+
+test_expect_success 'wrong number of letters in RGB color' '
+       invalid_color "#1" &&
+       invalid_color "#23" &&
+       invalid_color "#456" &&
+       invalid_color "#789a" &&
+       invalid_color "#bcdef" &&
+       invalid_color "#1234567"
+'
+
 test_expect_success 'unknown color slots are ignored (diff)' '
        git config color.diff.nosuchslotwilleverbedefined white &&
        git diff --color