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git-commit-vandalism/t/t0027-auto-crlf.sh
Torsten Bögershausen 343151dcbd t0027: combinations of core.autocrlf, core.eol and text 
Historically there are 3 different parameters controlling how line endings
are handled by Git:
- core.autocrlf
- core.eol
- the "text" attribute in .gitattributes

There are different types of content:
- (1) Files with only LF
- (2) Files with only CRLF
- (3) Files with mixed LF and CRLF
- (4) Files with LF and/or CRLF with CR not followed by LF
- (5) Files which are binary (e.g. have NUL bytes)

Recently the question came up, how files with mixed EOLs are handled by Git
(and libgit2) when they are checked out and core.autocrlf=true.

See
http://git.661346.n2.nabble.com/The-different-EOL-behavior-between-libgit2-based-software-and-official-Git-td7613670.html#a7613801

Add the EXPENSIVE t0027-auto-crlf.sh to test all combination of files
and parameters for both "git add/commit" and "git checkout".

Signed-off-by: Torsten Bögershausen <tboegi@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2014-07-08 12:40:40 -07:00

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#!/bin/sh
test_description='CRLF conversion all combinations'
. ./test-lib.sh
if ! test_have_prereq EXPENSIVE
then
skip_all="EXPENSIVE not set"
test_done
fi
compare_files()
{
od -c <"$1" >"$1".expect &&
od -c <"$2" >"$2".actual &&
test_cmp "$1".expect "$2".actual &&
rm "$1".expect "$2".actual
}
compare_ws_file()
{
pfx=$1
exp=$2.expect
act=$pfx.actual.$3
od -c <"$2" >"$exp" &&
od -c <"$3" >"$act" &&
test_cmp $exp $act &&
rm $exp $act
}
create_gitattributes()
{
txtbin=$1
case "$txtbin" in
auto)
echo "*.txt text=auto" >.gitattributes
;;
text)
echo "*.txt text" >.gitattributes
;;
-text)
echo "*.txt -text" >.gitattributes
;;
*)
echo >.gitattributes
;;
esac
}
create_file_in_repo()
{
crlf=$1
txtbin=$2
create_gitattributes "$txtbin" &&
for f in LF CRLF LF_mix_CR CRLF_mix_LF CRLF_nul
do
pfx=crlf_${crlf}_attr_${txtbin}_$f.txt &&
cp $f $pfx && git -c core.autocrlf=$crlf add $pfx
done &&
git commit -m "core.autocrlf $crlf"
}
check_files_in_repo()
{
crlf=$1
txtbin=$2
lfname=$3
crlfname=$4
lfmixcrlf=$5
lfmixcr=$6
crlfnul=$7
pfx=crlf_${crlf}_attr_${txtbin}_ &&
compare_files $lfname ${pfx}LF.txt &&
compare_files $crlfname ${pfx}CRLF.txt &&
compare_files $lfmixcrlf ${pfx}CRLF_mix_LF.txt &&
compare_files $lfmixcr ${pfx}LF_mix_CR.txt &&
compare_files $crlfnul ${pfx}CRLF_nul.txt
}
check_files_in_ws()
{
eol=$1
crlf=$2
txtbin=$3
lfname=$4
crlfname=$5
lfmixcrlf=$6
lfmixcr=$7
crlfnul=$8
create_gitattributes $txtbin &&
git config core.autocrlf $crlf &&
pfx=eol_${eol}_crlf_${crlf}_attr_${txtbin}_ &&
src=crlf_false_attr__ &&
for f in LF CRLF LF_mix_CR CRLF_mix_LF CRLF_nul
do
rm $src$f.txt &&
if test -z "$eol"; then
git checkout $src$f.txt
else
git -c core.eol=$eol checkout $src$f.txt
fi
done
test_expect_success "checkout core.eol=$eol core.autocrlf=$crlf gitattributes=$txtbin file=LF" "
compare_ws_file $pfx $lfname ${src}LF.txt
"
test_expect_success "checkout core.eol=$eol core.autocrlf=$crlf gitattributes=$txtbin file=CRLF" "
compare_ws_file $pfx $crlfname ${src}CRLF.txt
"
test_expect_success "checkout core.eol=$eol core.autocrlf=$crlf gitattributes=$txtbin file=CRLF_mix_LF" "
compare_ws_file $pfx $lfmixcrlf ${src}CRLF_mix_LF.txt
"
test_expect_success "checkout core.eol=$eol core.autocrlf=$crlf gitattributes=$txtbin file=LF_mix_CR" "
compare_ws_file $pfx $lfmixcr ${src}LF_mix_CR.txt
"
test_expect_success "checkout core.eol=$eol core.autocrlf=$crlf gitattributes=$txtbin file=CRLF_nul" "
compare_ws_file $pfx $crlfnul ${src}CRLF_nul.txt
"
}
#######
(
type od >/dev/null &&
printf "line1Q\r\nline2\r\nline3" | q_to_nul >CRLF_nul &&
cat >expect <<-EOF &&
0000000 l i n e 1 \0 \r \n l i n e 2 \r \n l
0000020 i n e 3
0000024
EOF
od -c CRLF_nul | sed -e "s/[ ][ ]*/ /g" -e "s/ *$//" >actual
test_cmp expect actual &&
rm expect actual
) || {
skip_all="od not found or od -c not usable"
exit 0
test_done
}
test_expect_success 'setup master' '
echo >.gitattributes &&
git checkout -b master &&
git add .gitattributes &&
git commit -m "add .gitattributes" "" &&
printf "line1\nline2\nline3" >LF &&
printf "line1\r\nline2\r\nline3" >CRLF &&
printf "line1\r\nline2\nline3" >CRLF_mix_LF &&
printf "line1\nline2\rline3" >LF_mix_CR &&
printf "line1\r\nline2\rline3" >CRLF_mix_CR &&
printf "line1Q\nline2\nline3" | q_to_nul >LF_nul
'
# CRLF_nul had been created above
test_expect_success 'create files' '
create_file_in_repo false "" &&
create_file_in_repo true "" &&
create_file_in_repo input "" &&
create_file_in_repo false "auto" &&
create_file_in_repo true "auto" &&
create_file_in_repo input "auto" &&
create_file_in_repo false "text" &&
create_file_in_repo true "text" &&
create_file_in_repo input "text" &&
create_file_in_repo false "-text" &&
create_file_in_repo true "-text" &&
create_file_in_repo input "-text" &&
rm -f *.txt &&
git reset --hard
'
test_expect_success 'commit empty gitattribues' '
check_files_in_repo false "" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul &&
check_files_in_repo true "" LF LF LF LF_mix_CR CRLF_nul &&
check_files_in_repo input "" LF LF LF LF_mix_CR CRLF_nul
'
test_expect_success 'commit text=auto' '
check_files_in_repo false "auto" LF LF LF LF_mix_CR CRLF_nul &&
check_files_in_repo true "auto" LF LF LF LF_mix_CR CRLF_nul &&
check_files_in_repo input "auto" LF LF LF LF_mix_CR CRLF_nul
'
test_expect_success 'commit text' '
check_files_in_repo false "text" LF LF LF LF_mix_CR LF_nul &&
check_files_in_repo true "text" LF LF LF LF_mix_CR LF_nul &&
check_files_in_repo input "text" LF LF LF LF_mix_CR LF_nul
'
test_expect_success 'commit -text' '
check_files_in_repo false "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul &&
check_files_in_repo true "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul &&
check_files_in_repo input "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
'
################################################################################
# Check how files in the repo are changed when they are checked out
# How to read the table below:
# - check_files_in_ws will check multiple files, see below
# - parameter $1 : core.eol lf | crlf
# - parameter $2 : core.autocrlf false | true | input
# - parameter $3 : text in .gitattributs "" (empty) | auto | text | -text
# - parameter $4 : reference for a file with only LF in the repo
# - parameter $5 : reference for a file with only CRLF in the repo
# - parameter $6 : reference for a file with mixed LF and CRLF in the repo
# - parameter $7 : reference for a file with LF and CR in the repo (does somebody uses this ?)
# - parameter $8 : reference for a file with CRLF and a NUL (should be handled as binary when auto)
check_files_in_ws lf false "" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf true "" CRLF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf input "" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf false "auto" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf true "auto" CRLF CRLF CRLF LF_mix_CR CRLF_nul
check_files_in_ws lf input "auto" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf false "text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf true "text" CRLF CRLF CRLF CRLF_mix_CR CRLF_nul
check_files_in_ws lf input "text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf false "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf true "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws lf input "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
###########
#core.autocrlf=input is forbidden with core.eol=crlf
check_files_in_ws crlf false "" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws crlf true "" CRLF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws crlf false "auto" CRLF CRLF CRLF LF_mix_CR CRLF_nul
check_files_in_ws crlf true "auto" CRLF CRLF CRLF LF_mix_CR CRLF_nul
check_files_in_ws crlf false "text" CRLF CRLF CRLF CRLF_mix_CR CRLF_nul
check_files_in_ws crlf true "text" CRLF CRLF CRLF CRLF_mix_CR CRLF_nul
check_files_in_ws crlf false "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws crlf true "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
if test_have_prereq MINGW
then
check_files_in_ws "" false "" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws "" true "" CRLF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws "" false "auto" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws "" true "auto" CRLF CRLF CRLF LF_mix_CR CRLF_nul
check_files_in_ws "" false "text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws "" true "text" CRLF CRLF CRLF CRLF_mix_CR CRLF_nul
check_files_in_ws "" false "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws "" true "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws native false "" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws native true "" CRLF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws native false "auto" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws native true "auto" CRLF CRLF CRLF LF_mix_CR CRLF_nul
check_files_in_ws native false "text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws native true "text" CRLF CRLF CRLF CRLF_mix_CR CRLF_nul
check_files_in_ws native false "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
check_files_in_ws native true "-text" LF CRLF CRLF_mix_LF LF_mix_CR CRLF_nul
fi
test_done
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