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git/t/t4035-diff-quiet.sh
Tim Henigan 304970dd5d diff-no-index: exit(1) if 'diff --quiet <repo file> <external file>' finds changes
When running 'git diff --quiet <file1> <file2>', if file1 or file2
is outside the repository, it will exit(0) even if the files differ.
It should exit(1) when they differ.

This happens because 'diff_no_index' looks at the 'found_changes'
member from 'diff_options' to determine if changes were made.  This
is the wrong thing to do, since it is only set if xdiff is actually
run and it finds a change (the diff machinery will optimize out the
xdiff call when it is not necessary) and in that case HAS_CHANGED
flag needs to be taken into account.

Use diff_result_code() that knows all these details for the correct
exit value instead.

Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-06-22 10:26:13 -07:00

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#!/bin/sh
test_description='Return value of diffs'
. ./test-lib.sh
test_expect_success 'setup' '
echo 1 >a &&
git add . &&
git commit -m first &&
echo 2 >b &&
git add . &&
git commit -a -m second &&
mkdir -p test-outside/repo && (
cd test-outside/repo &&
git init &&
echo "1 1" >a &&
git add . &&
git commit -m 1
) &&
mkdir -p test-outside/non/git && (
cd test-outside/non/git &&
echo "1 1" >a &&
echo "1 1" >matching-file &&
echo "1 1 " >trailing-space &&
echo "1 1" >extra-space &&
echo "2" >never-match
)
'
test_expect_success 'git diff-tree HEAD^ HEAD' '
git diff-tree --quiet HEAD^ HEAD >cnt
test $? = 1 && test_line_count = 0 cnt
'
test_expect_success 'git diff-tree HEAD^ HEAD -- a' '
git diff-tree --quiet HEAD^ HEAD -- a >cnt
test $? = 0 && test_line_count = 0 cnt
'
test_expect_success 'git diff-tree HEAD^ HEAD -- b' '
git diff-tree --quiet HEAD^ HEAD -- b >cnt
test $? = 1 && test_line_count = 0 cnt
'
# this diff outputs one line: sha1 of the given head
test_expect_success 'echo HEAD | git diff-tree --stdin' '
echo $(git rev-parse HEAD) | git diff-tree --quiet --stdin >cnt
test $? = 1 && test_line_count = 1 cnt
'
test_expect_success 'git diff-tree HEAD HEAD' '
git diff-tree --quiet HEAD HEAD >cnt
test $? = 0 && test_line_count = 0 cnt
'
test_expect_success 'git diff-files' '
git diff-files --quiet >cnt
test $? = 0 && test_line_count = 0 cnt
'
test_expect_success 'git diff-index --cached HEAD' '
git diff-index --quiet --cached HEAD >cnt
test $? = 0 && test_line_count = 0 cnt
'
test_expect_success 'git diff-index --cached HEAD^' '
git diff-index --quiet --cached HEAD^ >cnt
test $? = 1 && test_line_count = 0 cnt
'
test_expect_success 'git diff-index --cached HEAD^' '
echo text >>b &&
echo 3 >c &&
git add . && {
git diff-index --quiet --cached HEAD^ >cnt
test $? = 1 && test_line_count = 0 cnt
}
'
test_expect_success 'git diff-tree -Stext HEAD^ HEAD -- b' '
git commit -m "text in b" && {
git diff-tree --quiet -Stext HEAD^ HEAD -- b >cnt
test $? = 1 && test_line_count = 0 cnt
}
'
test_expect_success 'git diff-tree -Snot-found HEAD^ HEAD -- b' '
git diff-tree --quiet -Snot-found HEAD^ HEAD -- b >cnt
test $? = 0 && test_line_count = 0 cnt
'
test_expect_success 'git diff-files' '
echo 3 >>c && {
git diff-files --quiet >cnt
test $? = 1 && test_line_count = 0 cnt
}
'
test_expect_success 'git diff-index --cached HEAD' '
git update-index c && {
git diff-index --quiet --cached HEAD >cnt
test $? = 1 && test_line_count = 0 cnt
}
'
test_expect_success 'git diff, one file outside repo' '
(
cd test-outside/repo &&
test_expect_code 0 git diff --quiet a ../non/git/matching-file &&
test_expect_code 1 git diff --quiet a ../non/git/extra-space
)
'
test_expect_success 'git diff, both files outside repo' '
(
GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/test-outside" &&
export GIT_CEILING_DIRECTORIES &&
cd test-outside/non/git &&
test_expect_code 0 git diff --quiet a matching-file &&
test_expect_code 1 git diff --quiet a extra-space
)
'
test_expect_success 'git diff --ignore-space-at-eol, one file outside repo' '
(
cd test-outside/repo &&
test_expect_code 0 git diff --quiet --ignore-space-at-eol a ../non/git/trailing-space &&
test_expect_code 1 git diff --quiet --ignore-space-at-eol a ../non/git/extra-space
)
'
test_expect_success 'git diff --ignore-space-at-eol, both files outside repo' '
(
GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/test-outside" &&
export GIT_CEILING_DIRECTORIES &&
cd test-outside/non/git &&
test_expect_code 0 git diff --quiet --ignore-space-at-eol a trailing-space &&
test_expect_code 1 git diff --quiet --ignore-space-at-eol a extra-space
)
'
test_expect_success 'git diff --ignore-all-space, one file outside repo' '
(
cd test-outside/repo &&
test_expect_code 0 git diff --quiet --ignore-all-space a ../non/git/trailing-space &&
test_expect_code 0 git diff --quiet --ignore-all-space a ../non/git/extra-space &&
test_expect_code 1 git diff --quiet --ignore-all-space a ../non/git/never-match
)
'
test_expect_success 'git diff --ignore-all-space, both files outside repo' '
(
GIT_CEILING_DIRECTORIES="$TRASH_DIRECTORY/test-outside" &&
export GIT_CEILING_DIRECTORIES &&
cd test-outside/non/git &&
test_expect_code 0 git diff --quiet --ignore-all-space a trailing-space &&
test_expect_code 0 git diff --quiet --ignore-all-space a extra-space &&
test_expect_code 1 git diff --quiet --ignore-all-space a never-match
)
'
test_done