git-commit-vandalism/t/t4124-apply-ws-rule.sh
Junio C Hamano cf1b7869f0 Use gitattributes to define per-path whitespace rule
The `core.whitespace` configuration variable allows you to define what
`diff` and `apply` should consider whitespace errors for all paths in
the project (See gitlink:git-config[1]).  This attribute gives you finer
control per path.

For example, if you have these in the .gitattributes:

    frotz   whitespace
    nitfol  -whitespace
    xyzzy   whitespace=-trailing

all types of whitespace problems known to git are noticed in path 'frotz'
(i.e. diff shows them in diff.whitespace color, and apply warns about
them), no whitespace problem is noticed in path 'nitfol', and the
default types of whitespace problems except "trailing whitespace" are
noticed for path 'xyzzy'.  A project with mixed Python and C might want
to have:

    *.c    whitespace
    *.py   whitespace=-indent-with-non-tab

in its toplevel .gitattributes file.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2007-12-06 00:45:30 -08:00

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#!/bin/sh
test_description='core.whitespace rules and git-apply'
. ./test-lib.sh
prepare_test_file () {
# A line that has character X is touched iff RULE is in effect:
# X RULE
# ! trailing-space
# @ space-before-tab
# # indent-with-non-tab
sed -e "s/_/ /g" -e "s/>/ /" <<-\EOF
An_SP in an ordinary line>and a HT.
>A HT.
_>A SP and a HT (@).
_>_A SP, a HT and a SP (@).
_______Seven SP.
________Eight SP (#).
_______>Seven SP and a HT (@).
________>Eight SP and a HT (@#).
_______>_Seven SP, a HT and a SP (@).
________>_Eight SP, a HT and a SP (@#).
_______________Fifteen SP (#).
_______________>Fifteen SP and a HT (@#).
________________Sixteen SP (#).
________________>Sixteen SP and a HT (@#).
_____a__Five SP, a non WS, two SP.
A line with a (!) trailing SP_
A line with a (!) trailing HT>
EOF
}
apply_patch () {
>target &&
sed -e "s|\([ab]\)/file|\1/target|" <patch |
git apply "$@"
}
test_fix () {
# fix should not barf
apply_patch --whitespace=fix || return 1
# find touched lines
diff file target | sed -n -e "s/^> //p" >fixed
# the changed lines are all expeced to change
fixed_cnt=$(wc -l <fixed)
case "$1" in
'') expect_cnt=$fixed_cnt ;;
?*) expect_cnt=$(grep "[$1]" <fixed | wc -l) ;;
esac
test $fixed_cnt -eq $expect_cnt || return 1
# and we are not missing anything
case "$1" in
'') expect_cnt=0 ;;
?*) expect_cnt=$(grep "[$1]" <file | wc -l) ;;
esac
test $fixed_cnt -eq $expect_cnt || return 1
# Get the patch actually applied
git diff-files -p target >fixed-patch
test -s fixed-patch && return 0
# Make sure it is complaint-free
>target
git apply --whitespace=error-all <fixed-patch
}
test_expect_success setup '
>file &&
git add file &&
prepare_test_file >file &&
git diff-files -p >patch &&
>target &&
git add target
'
test_expect_success 'whitespace=nowarn, default rule' '
apply_patch --whitespace=nowarn &&
diff file target
'
test_expect_success 'whitespace=warn, default rule' '
apply_patch --whitespace=warn &&
diff file target
'
test_expect_success 'whitespace=error-all, default rule' '
apply_patch --whitespace=error-all && return 1
test -s target && return 1
: happy
'
test_expect_success 'whitespace=error-all, no rule' '
git config core.whitespace -trailing,-space-before,-indent &&
apply_patch --whitespace=error-all &&
diff file target
'
test_expect_success 'whitespace=error-all, no rule (attribute)' '
git config --unset core.whitespace &&
echo "target -whitespace" >.gitattributes &&
apply_patch --whitespace=error-all &&
diff file target
'
for t in - ''
do
case "$t" in '') tt='!' ;; *) tt= ;; esac
for s in - ''
do
case "$s" in '') ts='@' ;; *) ts= ;; esac
for i in - ''
do
case "$i" in '') ti='#' ;; *) ti= ;; esac
rule=${t}trailing,${s}space,${i}indent
rm -f .gitattributes
test_expect_success "rule=$rule" '
git config core.whitespace "$rule" &&
test_fix "$tt$ts$ti"
'
test_expect_success "rule=$rule (attributes)" '
git config --unset core.whitespace &&
echo "target whitespace=$rule" >.gitattributes &&
test_fix "$tt$ts$ti"
'
done
done
done
test_done