git-commit-vandalism/t/t4012-diff-binary.sh
Jonathan Nieder 2983c0e22a test: use numstat instead of diffstat in binary-diff test
git's --stat output is intended for humans and since v1.7.9.2~13
(2012-02-01) varies by locale.  The tests in this script using "apply
--stat" are meant to check two things:

 - how binary file changes are accounted for and printed in
   git's diffstat format

 - that "git apply" can parse the various forms of binary diff

Split these two kinds of check into separate tests, and use --numstat
instead of --stat in the latter.  This way, we lose less test coverage
when git is being run without writing its output in the C locale (for
example because GETTEXT_POISON is enabled) and there are fewer tests
to change if the --stat output needs to be tweaked again.

While at it, use commands separated by && that read and write to
temporary files in place of pipelines so segfaults and other failures
in the upstream of the processing pipeline don't get hidden.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-03-13 14:26:32 -07:00

111 lines
2.9 KiB
Bash
Executable File

#!/bin/sh
#
# Copyright (c) 2006 Junio C Hamano
#
test_description='Binary diff and apply
'
. ./test-lib.sh
cat >expect.binary-numstat <<\EOF
1 1 a
- - b
1 1 c
- - d
EOF
test_expect_success 'prepare repository' \
'echo AIT >a && echo BIT >b && echo CIT >c && echo DIT >d &&
git update-index --add a b c d &&
echo git >a &&
cat "$TEST_DIRECTORY"/test-binary-1.png >b &&
echo git >c &&
cat b b >d'
cat > expected <<\EOF
a | 2 +-
b | Bin
c | 2 +-
d | Bin
4 files changed, 2 insertions(+), 2 deletions(-)
EOF
test_expect_success '"apply --stat" output for binary file change' '
git diff >diff &&
git apply --stat --summary <diff >current &&
test_i18ncmp expected current
'
test_expect_success 'apply --numstat notices binary file change' '
git diff >diff &&
git apply --numstat <diff >current &&
test_cmp expect.binary-numstat current
'
test_expect_success 'apply --numstat understands diff --binary format' '
git diff --binary >diff &&
git apply --numstat <diff >current &&
test_cmp expect.binary-numstat current
'
# apply needs to be able to skip the binary material correctly
# in order to report the line number of a corrupt patch.
test_expect_success 'apply detecting corrupt patch correctly' \
'git diff | sed -e 's/-CIT/xCIT/' >broken &&
if git apply --stat --summary broken 2>detected
then
echo unhappy - should have detected an error
(exit 1)
else
echo happy
fi &&
detected=`cat detected` &&
detected=`expr "$detected" : "fatal.*at line \\([0-9]*\\)\$"` &&
detected=`sed -ne "${detected}p" broken` &&
test "$detected" = xCIT'
test_expect_success 'apply detecting corrupt patch correctly' \
'git diff --binary | sed -e 's/-CIT/xCIT/' >broken &&
if git apply --stat --summary broken 2>detected
then
echo unhappy - should have detected an error
(exit 1)
else
echo happy
fi &&
detected=`cat detected` &&
detected=`expr "$detected" : "fatal.*at line \\([0-9]*\\)\$"` &&
detected=`sed -ne "${detected}p" broken` &&
test "$detected" = xCIT'
test_expect_success 'initial commit' 'git commit -a -m initial'
# Try removal (b), modification (d), and creation (e).
test_expect_success 'diff-index with --binary' \
'echo AIT >a && mv b e && echo CIT >c && cat e >d &&
git update-index --add --remove a b c d e &&
tree0=`git write-tree` &&
git diff --cached --binary >current &&
git apply --stat --summary current'
test_expect_success 'apply binary patch' \
'git reset --hard &&
git apply --binary --index <current &&
tree1=`git write-tree` &&
test "$tree1" = "$tree0"'
test_expect_success 'diff --no-index with binary creation' '
echo Q | q_to_nul >binary &&
(: hide error code from diff, which just indicates differences
git diff --binary --no-index /dev/null binary >current ||
true
) &&
rm binary &&
git apply --binary <current &&
echo Q >expected &&
nul_to_q <binary >actual &&
test_cmp expected actual
'
test_done