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git/t/t2004-checkout-cache-temp.sh
Jeff King 7e41061588 checkout-index: propagate errors to exit code
If we encounter an error while checking out an explicit path, we print a
message to stderr but do not actually exit with a non-zero code. While
this is a plumbing command and the behavior goes all the way back to
33db5f4d90 (Add a "checkout-cache" command which does what the name
suggests., 2005-04-09), this is almost certainly an oversight:

  - we _do_ return an exit code from checkout_file(); the caller just
    never reads it

  - errors while checking out all paths (with "-a") do result in a
    non-zero exit code.

  - it would be quite unusual not to use the exit code for an error,
    as otherwise the caller has no idea the command failed except by
    scraping stderr

To keep our tests simple and portable, we can use the most obvious
error: asking to checkout a path which is not in the index at all.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2020-10-27 12:41:56 -07:00

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#!/bin/sh
#
# Copyright (c) 2006 Shawn Pearce
#
test_description='git checkout-index --temp test.
With --temp flag, git checkout-index writes to temporary merge files
rather than the tracked path.'
. ./test-lib.sh
test_expect_success 'setup' '
mkdir asubdir &&
echo tree1path0 >path0 &&
echo tree1path1 >path1 &&
echo tree1path3 >path3 &&
echo tree1path4 >path4 &&
echo tree1asubdir/path5 >asubdir/path5 &&
git update-index --add path0 path1 path3 path4 asubdir/path5 &&
t1=$(git write-tree) &&
rm -f path* .merge_* actual .git/index &&
echo tree2path0 >path0 &&
echo tree2path1 >path1 &&
echo tree2path2 >path2 &&
echo tree2path4 >path4 &&
git update-index --add path0 path1 path2 path4 &&
t2=$(git write-tree) &&
rm -f path* .merge_* actual .git/index &&
echo tree2path0 >path0 &&
echo tree3path1 >path1 &&
echo tree3path2 >path2 &&
echo tree3path3 >path3 &&
git update-index --add path0 path1 path2 path3 &&
t3=$(git write-tree)
'
test_expect_success 'checkout one stage 0 to temporary file' '
rm -f path* .merge_* actual .git/index &&
git read-tree $t1 &&
git checkout-index --temp -- path1 >actual &&
test_line_count = 1 actual &&
test $(cut "-d " -f2 actual) = path1 &&
p=$(cut "-d " -f1 actual) &&
test -f $p &&
test $(cat $p) = tree1path1
'
test_expect_success 'checkout all stage 0 to temporary files' '
rm -f path* .merge_* actual .git/index &&
git read-tree $t1 &&
git checkout-index -a --temp >actual &&
test_line_count = 5 actual &&
for f in path0 path1 path3 path4 asubdir/path5
do
test $(grep $f actual | cut "-d " -f2) = $f &&
p=$(grep $f actual | cut "-d " -f1) &&
test -f $p &&
test $(cat $p) = tree1$f
done
'
test_expect_success 'setup 3-way merge' '
rm -f path* .merge_* actual .git/index &&
git read-tree -m $t1 $t2 $t3
'
test_expect_success 'checkout one stage 2 to temporary file' '
rm -f path* .merge_* actual &&
git checkout-index --stage=2 --temp -- path1 >actual &&
test_line_count = 1 actual &&
test $(cut "-d " -f2 actual) = path1 &&
p=$(cut "-d " -f1 actual) &&
test -f $p &&
test $(cat $p) = tree2path1
'
test_expect_success 'checkout all stage 2 to temporary files' '
rm -f path* .merge_* actual &&
git checkout-index --all --stage=2 --temp >actual &&
test_line_count = 3 actual &&
for f in path1 path2 path4
do
test $(grep $f actual | cut "-d " -f2) = $f &&
p=$(grep $f actual | cut "-d " -f1) &&
test -f $p &&
test $(cat $p) = tree2$f
done
'
test_expect_success 'checkout all stages of unknown path' '
rm -f path* .merge_* actual &&
test_must_fail git checkout-index --stage=all --temp \
-- does-not-exist 2>stderr &&
test_i18ngrep not.in.the.cache stderr
'
test_expect_success 'checkout all stages/one file to nothing' '
rm -f path* .merge_* actual &&
git checkout-index --stage=all --temp -- path0 >actual 2>stderr &&
test_must_be_empty stderr &&
test_line_count = 0 actual
'
test_expect_success 'checkout all stages/one file to temporary files' '
rm -f path* .merge_* actual &&
git checkout-index --stage=all --temp -- path1 >actual &&
test_line_count = 1 actual &&
test $(cut "-d " -f2 actual) = path1 &&
cut "-d " -f1 actual | (read s1 s2 s3 &&
test -f $s1 &&
test -f $s2 &&
test -f $s3 &&
test $(cat $s1) = tree1path1 &&
test $(cat $s2) = tree2path1 &&
test $(cat $s3) = tree3path1)
'
test_expect_success 'checkout some stages/one file to temporary files' '
rm -f path* .merge_* actual &&
git checkout-index --stage=all --temp -- path2 >actual &&
test_line_count = 1 actual &&
test $(cut "-d " -f2 actual) = path2 &&
cut "-d " -f1 actual | (read s1 s2 s3 &&
test $s1 = . &&
test -f $s2 &&
test -f $s3 &&
test $(cat $s2) = tree2path2 &&
test $(cat $s3) = tree3path2)
'
test_expect_success 'checkout all stages/all files to temporary files' '
rm -f path* .merge_* actual &&
git checkout-index -a --stage=all --temp >actual &&
test_line_count = 5 actual
'
test_expect_success '-- path0: no entry' '
test x$(grep path0 actual | cut "-d " -f2) = x
'
test_expect_success '-- path1: all 3 stages' '
test $(grep path1 actual | cut "-d " -f2) = path1 &&
grep path1 actual | cut "-d " -f1 | (read s1 s2 s3 &&
test -f $s1 &&
test -f $s2 &&
test -f $s3 &&
test $(cat $s1) = tree1path1 &&
test $(cat $s2) = tree2path1 &&
test $(cat $s3) = tree3path1)
'
test_expect_success '-- path2: no stage 1, have stage 2 and 3' '
test $(grep path2 actual | cut "-d " -f2) = path2 &&
grep path2 actual | cut "-d " -f1 | (read s1 s2 s3 &&
test $s1 = . &&
test -f $s2 &&
test -f $s3 &&
test $(cat $s2) = tree2path2 &&
test $(cat $s3) = tree3path2)
'
test_expect_success '-- path3: no stage 2, have stage 1 and 3' '
test $(grep path3 actual | cut "-d " -f2) = path3 &&
grep path3 actual | cut "-d " -f1 | (read s1 s2 s3 &&
test -f $s1 &&
test $s2 = . &&
test -f $s3 &&
test $(cat $s1) = tree1path3 &&
test $(cat $s3) = tree3path3)
'
test_expect_success '-- path4: no stage 3, have stage 1 and 3' '
test $(grep path4 actual | cut "-d " -f2) = path4 &&
grep path4 actual | cut "-d " -f1 | (read s1 s2 s3 &&
test -f $s1 &&
test -f $s2 &&
test $s3 = . &&
test $(cat $s1) = tree1path4 &&
test $(cat $s2) = tree2path4)
'
test_expect_success '-- asubdir/path5: no stage 2 and 3 have stage 1' '
test $(grep asubdir/path5 actual | cut "-d " -f2) = asubdir/path5 &&
grep asubdir/path5 actual | cut "-d " -f1 | (read s1 s2 s3 &&
test -f $s1 &&
test $s2 = . &&
test $s3 = . &&
test $(cat $s1) = tree1asubdir/path5)
'
test_expect_success 'checkout --temp within subdir' '
(
cd asubdir &&
git checkout-index -a --stage=all >actual &&
test_line_count = 1 actual &&
test $(grep path5 actual | cut "-d " -f2) = path5 &&
grep path5 actual | cut "-d " -f1 | (read s1 s2 s3 &&
test -f ../$s1 &&
test $s2 = . &&
test $s3 = . &&
test $(cat ../$s1) = tree1asubdir/path5)
)
'
test_expect_success 'checkout --temp symlink' '
rm -f path* .merge_* actual .git/index &&
test_ln_s_add path7 path6 &&
git checkout-index --temp -a >actual &&
test_line_count = 1 actual &&
test $(cut "-d " -f2 actual) = path6 &&
p=$(cut "-d " -f1 actual) &&
test -f $p &&
test $(cat $p) = path7
'
test_expect_success 'emit well-formed relative path' '
rm -f path* .merge_* actual .git/index &&
>path0123456789 &&
git update-index --add path0123456789 &&
(
cd asubdir &&
git checkout-index --temp -- ../path0123456789 >actual &&
test_line_count = 1 actual &&
test $(cut "-d " -f2 actual) = ../path0123456789
)
'
test_done