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#!/bin/sh
#
# Copyright (c) 2009, 2010, 2012, 2013 David Aguilar
#
test_description='git-difftool
Testing basic diff tool invocation
'
. ./test-lib.sh
difftool_test_setup ()
{
test_config diff.tool test-tool &&
test_config difftool.test-tool.cmd 'cat "$LOCAL"' &&
test_config difftool.bogus-tool.cmd false
}
prompt_given ()
{
prompt="$1"
test "$prompt" = "Launch 'test-tool' [Y/n]? branch"
}
test_expect_success 'basic usage requires no repo' '
test_expect_code 129 git difftool -h >output &&
grep ^usage: output &&
# create a ceiling directory to prevent Git from finding a repo
mkdir -p not/repo &&
test_when_finished rm -r not &&
test_expect_code 129 \
env GIT_CEILING_DIRECTORIES="$(pwd)/not" \
git -C not/repo difftool -h >output &&
grep ^usage: output
'
# Create a file on master and change it on branch
test_expect_success 'setup' '
echo master >file &&
git add file &&
git commit -m "added file" &&
git checkout -b branch master &&
echo branch >file &&
git commit -a -m "branch changed file" &&
git checkout master
'
# Configure a custom difftool.<tool>.cmd and use it
test_expect_success 'custom commands' '
difftool_test_setup &&
test_config difftool.test-tool.cmd "cat \"\$REMOTE\"" &&
echo master >expect &&
git difftool --no-prompt branch >actual &&
test_cmp expect actual &&
test_config difftool.test-tool.cmd "cat \"\$LOCAL\"" &&
echo branch >expect &&
git difftool --no-prompt branch >actual &&
test_cmp expect actual
'
test_expect_success 'custom tool commands override built-ins' '
test_config difftool.vimdiff.cmd "cat \"\$REMOTE\"" &&
echo master >expect &&
git difftool --tool vimdiff --no-prompt branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool ignores bad --tool values' '
: >expect &&
test_must_fail \
git difftool --no-prompt --tool=bad-tool branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool forwards arguments to diff' '
difftool_test_setup &&
>for-diff &&
git add for-diff &&
echo changes>for-diff &&
git add for-diff &&
: >expect &&
git difftool --cached --no-prompt -- for-diff >actual &&
test_cmp expect actual &&
git reset -- for-diff &&
rm for-diff
'
test_expect_success 'difftool ignores exit code' '
test_config difftool.error.cmd false &&
git difftool -y -t error branch
'
test_expect_success 'difftool forwards exit code with --trust-exit-code' '
test_config difftool.error.cmd false &&
test_must_fail git difftool -y --trust-exit-code -t error branch
'
test_expect_success 'difftool forwards exit code with --trust-exit-code for built-ins' '
test_config difftool.vimdiff.path false &&
test_must_fail git difftool -y --trust-exit-code -t vimdiff branch
'
test_expect_success 'difftool honors difftool.trustExitCode = true' '
test_config difftool.error.cmd false &&
test_config difftool.trustExitCode true &&
test_must_fail git difftool -y -t error branch
'
test_expect_success 'difftool honors difftool.trustExitCode = false' '
test_config difftool.error.cmd false &&
test_config difftool.trustExitCode false &&
git difftool -y -t error branch
'
test_expect_success 'difftool ignores exit code with --no-trust-exit-code' '
test_config difftool.error.cmd false &&
test_config difftool.trustExitCode true &&
git difftool -y --no-trust-exit-code -t error branch
'
test_expect_success 'difftool stops on error with --trust-exit-code' '
test_when_finished "rm -f for-diff .git/fail-right-file" &&
test_when_finished "git reset -- for-diff" &&
write_script .git/fail-right-file <<-\EOF &&
echo "$2"
exit 1
EOF
>for-diff &&
git add for-diff &&
echo file >expect &&
test_must_fail git difftool -y --trust-exit-code \
--extcmd .git/fail-right-file branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool honors exit status if command not found' '
test_config difftool.nonexistent.cmd i-dont-exist &&
test_config difftool.trustExitCode false &&
test_must_fail git difftool -y -t nonexistent branch
'
test_expect_success 'difftool honors --gui' '
difftool_test_setup &&
test_config merge.tool bogus-tool &&
test_config diff.tool bogus-tool &&
test_config diff.guitool test-tool &&
echo branch >expect &&
git difftool --no-prompt --gui branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool --gui last setting wins' '
difftool_test_setup &&
: >expect &&
git difftool --no-prompt --gui --no-gui >actual &&
test_cmp expect actual &&
test_config merge.tool bogus-tool &&
test_config diff.tool bogus-tool &&
test_config diff.guitool test-tool &&
echo branch >expect &&
git difftool --no-prompt --no-gui --gui branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool --gui works without configured diff.guitool' '
difftool_test_setup &&
echo branch >expect &&
git difftool --no-prompt --gui branch >actual &&
test_cmp expect actual
'
# Specify the diff tool using $GIT_DIFF_TOOL
test_expect_success 'GIT_DIFF_TOOL variable' '
difftool_test_setup &&
git config --unset diff.tool &&
echo branch >expect &&
GIT_DIFF_TOOL=test-tool git difftool --no-prompt branch >actual &&
test_cmp expect actual
'
# Test the $GIT_*_TOOL variables and ensure
# that $GIT_DIFF_TOOL always wins unless --tool is specified
test_expect_success 'GIT_DIFF_TOOL overrides' '
difftool_test_setup &&
test_config diff.tool bogus-tool &&
test_config merge.tool bogus-tool &&
echo branch >expect &&
GIT_DIFF_TOOL=test-tool git difftool --no-prompt branch >actual &&
test_cmp expect actual &&
test_config diff.tool bogus-tool &&
test_config merge.tool bogus-tool &&
GIT_DIFF_TOOL=bogus-tool \
git difftool --no-prompt --tool=test-tool branch >actual &&
test_cmp expect actual
'
# Test that we don't have to pass --no-prompt to difftool
# when $GIT_DIFFTOOL_NO_PROMPT is true
test_expect_success 'GIT_DIFFTOOL_NO_PROMPT variable' '
difftool_test_setup &&
echo branch >expect &&
GIT_DIFFTOOL_NO_PROMPT=true git difftool branch >actual &&
test_cmp expect actual
'
# git-difftool supports the difftool.prompt variable.
# Test that GIT_DIFFTOOL_PROMPT can override difftool.prompt = false
test_expect_success 'GIT_DIFFTOOL_PROMPT variable' '
difftool_test_setup &&
test_config difftool.prompt false &&
echo >input &&
GIT_DIFFTOOL_PROMPT=true git difftool branch <input >output &&
prompt=$(tail -1 <output) &&
prompt_given "$prompt"
'
# Test that we don't have to pass --no-prompt when difftool.prompt is false
test_expect_success 'difftool.prompt config variable is false' '
difftool_test_setup &&
test_config difftool.prompt false &&
echo branch >expect &&
git difftool branch >actual &&
test_cmp expect actual
'
# Test that we don't have to pass --no-prompt when mergetool.prompt is false
test_expect_success 'difftool merge.prompt = false' '
difftool_test_setup &&
test_might_fail git config --unset difftool.prompt &&
test_config mergetool.prompt false &&
echo branch >expect &&
git difftool branch >actual &&
test_cmp expect actual
'
# Test that the -y flag can override difftool.prompt = true
test_expect_success 'difftool.prompt can overridden with -y' '
difftool_test_setup &&
test_config difftool.prompt true &&
echo branch >expect &&
git difftool -y branch >actual &&
test_cmp expect actual
'
# Test that the --prompt flag can override difftool.prompt = false
test_expect_success 'difftool.prompt can overridden with --prompt' '
difftool_test_setup &&
test_config difftool.prompt false &&
echo >input &&
git difftool --prompt branch <input >output &&
prompt=$(tail -1 <output) &&
prompt_given "$prompt"
'
# Test that the last flag passed on the command-line wins
test_expect_success 'difftool last flag wins' '
difftool_test_setup &&
echo branch >expect &&
git difftool --prompt --no-prompt branch >actual &&
test_cmp expect actual &&
echo >input &&
git difftool --no-prompt --prompt branch <input >output &&
prompt=$(tail -1 <output) &&
prompt_given "$prompt"
'
# git-difftool falls back to git-mergetool config variables
# so test that behavior here
test_expect_success 'difftool + mergetool config variables' '
test_config merge.tool test-tool &&
test_config mergetool.test-tool.cmd "cat \$LOCAL" &&
echo branch >expect &&
git difftool --no-prompt branch >actual &&
test_cmp expect actual &&
# set merge.tool to something bogus, diff.tool to test-tool
test_config merge.tool bogus-tool &&
test_config diff.tool test-tool &&
git difftool --no-prompt branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool.<tool>.path' '
test_config difftool.tkdiff.path echo &&
git difftool --tool=tkdiff --no-prompt branch >output &&
grep file output >grep-output &&
test_line_count = 1 grep-output
'
test_expect_success 'difftool --extcmd=cat' '
echo branch >expect &&
echo master >>expect &&
git difftool --no-prompt --extcmd=cat branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool --extcmd cat' '
echo branch >expect &&
echo master >>expect &&
git difftool --no-prompt --extcmd=cat branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool -x cat' '
echo branch >expect &&
echo master >>expect &&
git difftool --no-prompt -x cat branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool --extcmd echo arg1' '
echo file >expect &&
git difftool --no-prompt \
--extcmd sh\ -c\ \"echo\ \$1\" branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool --extcmd cat arg1' '
echo master >expect &&
git difftool --no-prompt \
--extcmd sh\ -c\ \"cat\ \$1\" branch >actual &&
test_cmp expect actual
'
test_expect_success 'difftool --extcmd cat arg2' '
echo branch >expect &&
git difftool --no-prompt \
--extcmd sh\ -c\ \"cat\ \$2\" branch >actual &&
test_cmp expect actual
'
# Create a second file on master and a different version on branch
test_expect_success 'setup with 2 files different' '
echo m2 >file2 &&
git add file2 &&
git commit -m "added file2" &&
git checkout branch &&
echo br2 >file2 &&
git add file2 &&
git commit -a -m "branch changed file2" &&
git checkout master
'
test_expect_success 'say no to the first file' '
(echo n && echo) >input &&
git difftool -x cat branch <input >output &&
grep m2 output &&
grep br2 output &&
! grep master output &&
! grep branch output
'
test_expect_success 'say no to the second file' '
(echo && echo n) >input &&
git difftool -x cat branch <input >output &&
grep master output &&
grep branch output &&
! grep m2 output &&
! grep br2 output
'
test_expect_success 'ending prompt input with EOF' '
git difftool -x cat branch </dev/null >output &&
! grep master output &&
! grep branch output &&
! grep m2 output &&
! grep br2 output
'
test_expect_success 'difftool --tool-help' '
git difftool --tool-help >output &&
grep tool output
'
test_expect_success 'setup change in subdirectory' '
git checkout master &&
mkdir sub &&
echo master >sub/sub &&
git add sub/sub &&
git commit -m "added sub/sub" &&
git tag v1 &&
echo test >>file &&
echo test >>sub/sub &&
git add file sub/sub &&
git commit -m "modified both"
'
test_expect_success 'difftool -d with growing paths' '
a=aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa &&
git init growing &&
(
cd growing &&
echo "test -f \"\$2/b\"" | write_script .git/test-for-b.sh &&
one=$(printf 1 | git hash-object -w --stdin) &&
two=$(printf 2 | git hash-object -w --stdin) &&
git update-index --add \
--cacheinfo 100644,$one,$a --cacheinfo 100644,$two,b &&
tree1=$(git write-tree) &&
git update-index --add \
--cacheinfo 100644,$two,$a --cacheinfo 100644,$one,b &&
tree2=$(git write-tree) &&
git checkout -- $a &&
git difftool -d --extcmd .git/test-for-b.sh $tree1 $tree2
)
'
run_dir_diff_test () {
test_expect_success "$1 --no-symlinks" "
symlinks=--no-symlinks &&
$2
"
test_expect_success SYMLINKS "$1 --symlinks" "
symlinks=--symlinks &&
$2
"
}
run_dir_diff_test 'difftool -d' '
git difftool -d $symlinks --extcmd ls branch >output &&
grep sub output &&
grep file output
'
run_dir_diff_test 'difftool --dir-diff' '
git difftool --dir-diff $symlinks --extcmd ls branch >output &&
grep sub output &&
grep file output
'
run_dir_diff_test 'difftool --dir-diff ignores --prompt' '
git difftool --dir-diff $symlinks --prompt --extcmd ls branch >output &&
grep sub output &&
grep file output
'
run_dir_diff_test 'difftool --dir-diff branch from subdirectory' '
(
cd sub &&
git difftool --dir-diff $symlinks --extcmd ls branch >output &&
# "sub" must only exist in "right"
# "file" and "file2" must be listed in both "left" and "right"
grep sub output >sub-output &&
test_line_count = 1 sub-output &&
grep file"$" output >file-output &&
test_line_count = 2 file-output &&
grep file2 output >file2-output &&
test_line_count = 2 file2-output
)
'
run_dir_diff_test 'difftool --dir-diff v1 from subdirectory' '
(
cd sub &&
git difftool --dir-diff $symlinks --extcmd ls v1 >output &&
# "sub" and "file" exist in both v1 and HEAD.
# "file2" is unchanged.
grep sub output >sub-output &&
test_line_count = 2 sub-output &&
grep file output >file-output &&
test_line_count = 2 file-output &&
! grep file2 output
)
'
run_dir_diff_test 'difftool --dir-diff branch from subdirectory w/ pathspec' '
(
cd sub &&
git difftool --dir-diff $symlinks --extcmd ls branch -- .>output &&
# "sub" only exists in "right"
# "file" and "file2" must not be listed
grep sub output >sub-output &&
test_line_count = 1 sub-output &&
! grep file output
)
'
run_dir_diff_test 'difftool --dir-diff v1 from subdirectory w/ pathspec' '
(
cd sub &&
git difftool --dir-diff $symlinks --extcmd ls v1 -- .>output &&
# "sub" exists in v1 and HEAD
# "file" is filtered out by the pathspec
grep sub output >sub-output &&
test_line_count = 2 sub-output &&
! grep file output
)
'
run_dir_diff_test 'difftool --dir-diff from subdirectory with GIT_DIR set' '
(
GIT_DIR=$(pwd)/.git &&
export GIT_DIR &&
GIT_WORK_TREE=$(pwd) &&
export GIT_WORK_TREE &&
cd sub &&
git difftool --dir-diff $symlinks --extcmd ls \
branch -- sub >output &&
grep sub output &&
! grep file output
)
'
run_dir_diff_test 'difftool --dir-diff when worktree file is missing' '
test_when_finished git reset --hard &&
rm file2 &&
git difftool --dir-diff $symlinks --extcmd ls branch master >output &&
grep file2 output
'
run_dir_diff_test 'difftool --dir-diff with unmerged files' '
test_when_finished git reset --hard &&
test_config difftool.echo.cmd "echo ok" &&
git checkout -B conflict-a &&
git checkout -B conflict-b &&
git checkout conflict-a &&
echo a >>file &&
git add file &&
git commit -m conflict-a &&
git checkout conflict-b &&
echo b >>file &&
git add file &&
git commit -m conflict-b &&
git checkout master &&
git merge conflict-a &&
test_must_fail git merge conflict-b &&
cat >expect <<-EOF &&
ok
EOF
git difftool --dir-diff $symlinks -t echo >actual &&
test_cmp expect actual
'
write_script .git/CHECK_SYMLINKS <<\EOF
for f in file file2 sub/sub
do
echo "$f"
ls -ld "$2/$f" | sed -e 's/.* -> //'
done >actual
EOF
test_expect_success SYMLINKS 'difftool --dir-diff --symlink without unstaged changes' '
cat >expect <<-EOF &&
file
$PWD/file
file2
$PWD/file2
sub/sub
$PWD/sub/sub
EOF
git difftool --dir-diff --symlink \
--extcmd "./.git/CHECK_SYMLINKS" branch HEAD &&
test_cmp actual expect
'
write_script modify-right-file <<\EOF
echo "new content" >"$2/file"
EOF
run_dir_diff_test 'difftool --dir-diff syncs worktree with unstaged change' '
test_when_finished git reset --hard &&
echo "orig content" >file &&
git difftool -d $symlinks --extcmd "$PWD/modify-right-file" branch &&
echo "new content" >expect &&
test_cmp expect file
'
run_dir_diff_test 'difftool --dir-diff syncs worktree without unstaged change' '
test_when_finished git reset --hard &&
git difftool -d $symlinks --extcmd "$PWD/modify-right-file" branch &&
echo "new content" >expect &&
test_cmp expect file
'
write_script modify-file <<\EOF
echo "new content" >file
EOF
test_expect_success 'difftool --no-symlinks does not overwrite working tree file ' '
echo "orig content" >file &&
git difftool --dir-diff --no-symlinks --extcmd "$PWD/modify-file" branch &&
echo "new content" >expect &&
test_cmp expect file
'
write_script modify-both-files <<\EOF
echo "wt content" >file &&
echo "tmp content" >"$2/file" &&
echo "$2" >tmpdir
EOF
test_expect_success 'difftool --no-symlinks detects conflict ' '
(
TMPDIR=$TRASH_DIRECTORY &&
export TMPDIR &&
echo "orig content" >file &&
test_must_fail git difftool --dir-diff --no-symlinks --extcmd "$PWD/modify-both-files" branch &&
echo "wt content" >expect &&
test_cmp expect file &&
echo "tmp content" >expect &&
test_cmp expect "$(cat tmpdir)/file"
)
'
test_expect_success 'difftool properly honors gitlink and core.worktree' '
test_when_finished rm -rf submod/ule &&
git submodule add ./. submod/ule &&
test_config -C submod/ule diff.tool checktrees &&
test_config -C submod/ule difftool.checktrees.cmd '\''
test -d "$LOCAL" && test -d "$REMOTE" && echo good
'\'' &&
(
cd submod/ule &&
echo good >expect &&
git difftool --tool=checktrees --dir-diff HEAD~ >actual &&
test_cmp expect actual &&
rm -f expect actual
)
'
test_expect_success SYMLINKS 'difftool --dir-diff symlinked directories' '
test_when_finished git reset --hard &&
git init dirlinks &&
(
cd dirlinks &&
git config diff.tool checktrees &&
git config difftool.checktrees.cmd "echo good" &&
mkdir foo &&
: >foo/bar &&
git add foo/bar &&
test_commit symlink-one &&
ln -s foo link &&
git add link &&
test_commit symlink-two &&
echo good >expect &&
git difftool --tool=checktrees --dir-diff HEAD~ >actual &&
test_cmp expect actual
)
'
test_expect_success SYMLINKS 'difftool --dir-diff handles modified symlinks' '
test_when_finished git reset --hard &&
touch b &&
ln -s b c &&
git add b c &&
test_tick &&
git commit -m initial &&
touch d &&
rm c &&
ln -s d c &&
cat >expect <<-EOF &&
b
c
c
EOF
git difftool --symlinks --dir-diff --extcmd ls >output &&
grep -v ^/ output >actual &&
test_cmp expect actual &&
git difftool --no-symlinks --dir-diff --extcmd ls >output &&
grep -v ^/ output >actual &&
test_cmp expect actual &&
# The left side contains symlink "c" that points to "b"
test_config difftool.cat.cmd "cat \$LOCAL/c" &&
printf "%s\n" b >expect &&
git difftool --symlinks --dir-diff --tool cat >actual &&
test_cmp expect actual &&
git difftool --symlinks --no-symlinks --dir-diff --tool cat >actual &&
test_cmp expect actual &&
# The right side contains symlink "c" that points to "d"
test_config difftool.cat.cmd "cat \$REMOTE/c" &&
printf "%s\n" d >expect &&
git difftool --symlinks --dir-diff --tool cat >actual &&
test_cmp expect actual &&
git difftool --no-symlinks --dir-diff --tool cat >actual &&
test_cmp expect actual &&
# Deleted symlinks
rm -f c &&
cat >expect <<-EOF &&
b
c
EOF
git difftool --symlinks --dir-diff --extcmd ls >output &&
grep -v ^/ output >actual &&
test_cmp expect actual &&
git difftool --no-symlinks --dir-diff --extcmd ls >output &&
grep -v ^/ output >actual &&
test_cmp expect actual
'
test_done