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git/t/t4019-diff-wserror.sh
Christoph Mallon 8837d33595 diff --check: correct line numbers of new blank lines at EOF
The whitespace check printed the value of the wrong variable, i.e. the
beginning of the block of blank lines at the EOF (possibly absent) in the
old file.

As "git diff --check" is used by users to check their changes before
making a commit, we should point at the line number in the file after
the change.

Signed-off-by: Christoph Mallon <christoph.mallon@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2010-10-16 18:57:35 -07:00

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#!/bin/sh
test_description='diff whitespace error detection'
. ./test-lib.sh
test_expect_success setup '
git config diff.color.whitespace "blue reverse" &&
>F &&
git add F &&
echo " Eight SP indent" >>F &&
echo " HT and SP indent" >>F &&
echo "With trailing SP " >>F &&
echo "Carriage ReturnQ" | tr Q "\015" >>F &&
echo "No problem" >>F &&
echo >>F
'
blue_grep='7;34m' ;# ESC [ 7 ; 3 4 m
printf "\033[%s" "$blue_grep" >check-grep
if (grep "$blue_grep" <check-grep | grep "$blue_grep") >/dev/null 2>&1
then
grep_a=grep
elif (grep -a "$blue_grep" <check-grep | grep -a "$blue_grep") >/dev/null 2>&1
then
grep_a='grep -a'
else
grep_a=grep ;# expected to fail...
fi
rm -f check-grep
prepare_output () {
git diff --color >output
$grep_a "$blue_grep" output >error
$grep_a -v "$blue_grep" output >normal
}
test_expect_success default '
prepare_output
grep Eight normal >/dev/null &&
grep HT error >/dev/null &&
grep With error >/dev/null &&
grep Return error >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'without -trail' '
git config core.whitespace -trail
prepare_output
grep Eight normal >/dev/null &&
grep HT error >/dev/null &&
grep With normal >/dev/null &&
grep Return normal >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'without -trail (attribute)' '
git config --unset core.whitespace
echo "F whitespace=-trail" >.gitattributes
prepare_output
grep Eight normal >/dev/null &&
grep HT error >/dev/null &&
grep With normal >/dev/null &&
grep Return normal >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'without -space' '
rm -f .gitattributes
git config core.whitespace -space
prepare_output
grep Eight normal >/dev/null &&
grep HT normal >/dev/null &&
grep With error >/dev/null &&
grep Return error >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'without -space (attribute)' '
git config --unset core.whitespace
echo "F whitespace=-space" >.gitattributes
prepare_output
grep Eight normal >/dev/null &&
grep HT normal >/dev/null &&
grep With error >/dev/null &&
grep Return error >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'with indent-non-tab only' '
rm -f .gitattributes
git config core.whitespace indent,-trailing,-space
prepare_output
grep Eight error >/dev/null &&
grep HT normal >/dev/null &&
grep With normal >/dev/null &&
grep Return normal >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'with indent-non-tab only (attribute)' '
git config --unset core.whitespace
echo "F whitespace=indent,-trailing,-space" >.gitattributes
prepare_output
grep Eight error >/dev/null &&
grep HT normal >/dev/null &&
grep With normal >/dev/null &&
grep Return normal >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'with cr-at-eol' '
rm -f .gitattributes
git config core.whitespace cr-at-eol
prepare_output
grep Eight normal >/dev/null &&
grep HT error >/dev/null &&
grep With error >/dev/null &&
grep Return normal >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'with cr-at-eol (attribute)' '
git config --unset core.whitespace
echo "F whitespace=trailing,cr-at-eol" >.gitattributes
prepare_output
grep Eight normal >/dev/null &&
grep HT error >/dev/null &&
grep With error >/dev/null &&
grep Return normal >/dev/null &&
grep No normal >/dev/null
'
test_expect_success 'trailing empty lines (1)' '
rm -f .gitattributes &&
test_must_fail git diff --check >output &&
grep "new blank line at" output &&
grep "trailing whitespace" output
'
test_expect_success 'trailing empty lines (2)' '
echo "F -whitespace" >.gitattributes &&
git diff --check >output &&
! test -s output
'
test_expect_success 'checkdiff shows correct line number for trailing blank lines' '
printf "a\nb\n" > G &&
git add G &&
printf "x\nx\nx\na\nb\nc\n\n" > G &&
[ "$(git diff --check -- G)" = "G:7: new blank line at EOF." ]
'
test_expect_success 'do not color trailing cr in context' '
git config --unset core.whitespace
rm -f .gitattributes &&
echo AAAQ | tr Q "\015" >G &&
git add G &&
echo BBBQ | tr Q "\015" >>G
git diff --color G | tr "\015" Q >output &&
grep "BBB.*${blue_grep}Q" output &&
grep "AAA.*\[mQ" output
'
test_expect_success 'color new trailing blank lines' '
{ echo a; echo b; echo; echo; } >x &&
git add x &&
{ echo a; echo; echo; echo; echo c; echo; echo; echo; echo; } >x &&
git diff --color x >output &&
cnt=$($grep_a "${blue_grep}" output | wc -l) &&
test $cnt = 2
'
test_done