git/t/t4026-color.sh
Robert Estelle de658515ae color: allow colors to be prefixed with "reset"
"reset" was previously treated as a standalone special color name
representing `\e[m`. Now, it can apply to other color properties,
allowing exact specifications without implicit attribute inheritance.

For example, "reset green" now renders `\e[;32m`, which is interpreted
as "reset everything; then set foreground to green". This means the
background and other attributes are also reset to their defaults.

Previously, this was impossible to represent in a single color:
"reset" could be specified alone, or a color with attributes, but some
thing like clearing a background color were impossible.

There is a separate change that introduces the "default" color name to
assist with that, but even then, the above could only to be represented
by explicitly disabling each of the attributes:
  green default no-bold no-dim no-italic no-ul no-blink no-reverse no-strike

Signed-off-by: Robert Estelle <robertestelle@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-10-28 09:37:18 -07:00

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#!/bin/sh
#
# Copyright (c) 2008 Timo Hirvonen
#
test_description='Test diff/status color escape codes'
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
ESC=$(printf '\033')
color()
{
actual=$(git config --get-color no.such.slot "$1") &&
test "$actual" = "${2:+$ESC}$2"
}
invalid_color()
{
test_must_fail git config --get-color no.such.slot "$1"
}
test_expect_success 'reset' '
color "reset" "[m"
'
test_expect_success 'empty color is empty' '
color "" ""
'
test_expect_success 'attribute before color name' '
color "bold red" "[1;31m"
'
test_expect_success 'aixterm bright fg color' '
color "brightred" "[91m"
'
test_expect_success 'aixterm bright bg color' '
color "green brightblue" "[32;104m"
'
test_expect_success 'color name before attribute' '
color "red bold" "[1;31m"
'
test_expect_success 'attr fg bg' '
color "ul blue red" "[4;34;41m"
'
test_expect_success 'fg attr bg' '
color "blue ul red" "[4;34;41m"
'
test_expect_success 'fg bg attr' '
color "blue red ul" "[4;34;41m"
'
test_expect_success 'fg bg attr...' '
color "blue bold dim ul blink reverse" "[1;2;4;5;7;34m"
'
test_expect_success 'reset fg bg attr...' '
color "reset blue bold dim ul blink reverse" "[;1;2;4;5;7;34m"
'
# note that nobold and nodim are the same code (22)
test_expect_success 'attr negation' '
color "nobold nodim noul noblink noreverse" "[22;24;25;27m"
'
test_expect_success '"no-" variant of negation' '
color "no-bold no-blink" "[22;25m"
'
test_expect_success 'long color specification' '
color "254 255 bold dim ul blink reverse" "[1;2;4;5;7;38;5;254;48;5;255m"
'
test_expect_success 'absurdly long color specification' '
color \
"#ffffff #ffffff bold nobold dim nodim italic noitalic
ul noul blink noblink reverse noreverse strike nostrike" \
"[1;2;3;4;5;7;9;22;23;24;25;27;29;38;2;255;255;255;48;2;255;255;255m"
'
test_expect_success '0-7 are aliases for basic ANSI color names' '
color "0 7" "[30;47m"
'
test_expect_success '8-15 are aliases for aixterm color names' '
color "12 13" "[94;105m"
'
test_expect_success '256 colors' '
color "254 bold 255" "[1;38;5;254;48;5;255m"
'
test_expect_success '24-bit colors' '
color "#ff00ff black" "[38;2;255;0;255;40m"
'
test_expect_success '"default" foreground' '
color "default" "[39m"
'
test_expect_success '"normal default" to clear background' '
color "normal default" "[49m"
'
test_expect_success '"default" can be combined with attributes' '
color "default default no-reverse bold" "[1;27;39;49m"
'
test_expect_success '"normal" yields no color at all"' '
color "normal black" "[40m"
'
test_expect_success '-1 is a synonym for "normal"' '
color "-1 black" "[40m"
'
test_expect_success 'color too small' '
invalid_color "-2"
'
test_expect_success 'color too big' '
invalid_color "256"
'
test_expect_success 'extra character after color number' '
invalid_color "3X"
'
test_expect_success 'extra character after color name' '
invalid_color "redX"
'
test_expect_success 'extra character after attribute' '
invalid_color "dimX"
'
test_expect_success 'unknown color slots are ignored (diff)' '
git config color.diff.nosuchslotwilleverbedefined white &&
git diff --color
'
test_expect_success 'unknown color slots are ignored (branch)' '
git config color.branch.nosuchslotwilleverbedefined white &&
git branch -a
'
test_expect_success 'unknown color slots are ignored (status)' '
git config color.status.nosuchslotwilleverbedefined white &&
{ git status; ret=$?; } &&
case $ret in 0|1) : ok ;; *) false ;; esac
'
test_done