git/t/t7800-difftool.sh
Junio C Hamano 18973d8ac9 Merge branch 'jk/difftool-dir-diff-edit-fix'
"git difftool --dir-diff" made symlinks to working tree files when
preparing a temporary directory structure, so that accidental edits
of these files in the difftool are reflected back to the working
tree, but the logic to decide when to do so was not quite right.

* jk/difftool-dir-diff-edit-fix:
  difftool --dir-diff: symlink all files matching the working tree
  difftool: avoid double slashes in symlink targets
  git-difftool(1): fix formatting of --symlink description
2013-03-28 14:37:22 -07:00

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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"
}
stdin_contains ()
{
grep >/dev/null "$1"
}
stdin_doesnot_contain ()
{
! stdin_contains "$1"
}
# Create a file on master and change it on branch
test_expect_success PERL '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 PERL '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 PERL '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 PERL 'difftool ignores bad --tool values' '
: >expect &&
test_expect_code 1 \
git difftool --no-prompt --tool=bad-tool branch >actual &&
test_cmp expect actual
'
test_expect_success PERL '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 PERL '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 PERL '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 PERL '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 PERL '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 PERL '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 $GIT_DIFFTOOL_NO_PROMPT is true
test_expect_success PERL 'GIT_DIFFTOOL_NO_PROMPT variable' '
difftool_test_setup &&
echo branch >expect &&
GIT_DIFFTOOL_NO_PROMPT=true git difftool branch >actual &&
test_cmp expect actual
'
# git-difftool supports the difftool.prompt variable.
# Test that GIT_DIFFTOOL_PROMPT can override difftool.prompt = false
test_expect_success PERL 'GIT_DIFFTOOL_PROMPT variable' '
difftool_test_setup &&
test_config difftool.prompt false &&
echo >input &&
GIT_DIFFTOOL_PROMPT=true git difftool branch <input >output &&
prompt=$(tail -1 <output) &&
prompt_given "$prompt"
'
# Test that we don't have to pass --no-prompt when difftool.prompt is false
test_expect_success PERL 'difftool.prompt config variable is false' '
difftool_test_setup &&
test_config difftool.prompt false &&
echo branch >expect &&
git difftool branch >actual &&
test_cmp expect actual
'
# Test that we don't have to pass --no-prompt when mergetool.prompt is false
test_expect_success PERL 'difftool merge.prompt = false' '
difftool_test_setup &&
test_might_fail git config --unset difftool.prompt &&
test_config mergetool.prompt false &&
echo branch >expect &&
git difftool branch >actual &&
test_cmp expect actual
'
# Test that the -y flag can override difftool.prompt = true
test_expect_success PERL 'difftool.prompt can overridden with -y' '
difftool_test_setup &&
test_config difftool.prompt true &&
echo branch >expect &&
git difftool -y branch >actual &&
test_cmp expect actual
'
# Test that the --prompt flag can override difftool.prompt = false
test_expect_success PERL 'difftool.prompt can overridden with --prompt' '
difftool_test_setup &&
test_config difftool.prompt false &&
echo >input &&
git difftool --prompt branch <input >output &&
prompt=$(tail -1 <output) &&
prompt_given "$prompt"
'
# Test that the last flag passed on the command-line wins
test_expect_success PERL 'difftool last flag wins' '
difftool_test_setup &&
echo branch >expect &&
git difftool --prompt --no-prompt branch >actual &&
test_cmp expect actual &&
echo >input &&
git difftool --no-prompt --prompt branch <input >output &&
prompt=$(tail -1 <output) &&
prompt_given "$prompt"
'
# git-difftool falls back to git-mergetool config variables
# so test that behavior here
test_expect_success PERL 'difftool + mergetool config variables' '
test_config merge.tool test-tool &&
test_config mergetool.test-tool.cmd "cat \$LOCAL" &&
echo branch >expect &&
git difftool --no-prompt branch >actual &&
test_cmp expect actual &&
# set merge.tool to something bogus, diff.tool to test-tool
test_config merge.tool bogus-tool &&
test_config diff.tool test-tool &&
git difftool --no-prompt branch >actual &&
test_cmp expect actual
'
test_expect_success PERL 'difftool.<tool>.path' '
test_config difftool.tkdiff.path echo &&
git difftool --tool=tkdiff --no-prompt branch >output &&
lines=$(grep file output | wc -l) &&
test "$lines" -eq 1
'
test_expect_success PERL 'difftool --extcmd=cat' '
echo branch >expect &&
echo master >>expect &&
git difftool --no-prompt --extcmd=cat branch >actual &&
test_cmp expect actual
'
test_expect_success PERL 'difftool --extcmd cat' '
echo branch >expect &&
echo master >>expect &&
git difftool --no-prompt --extcmd=cat branch >actual &&
test_cmp expect actual
'
test_expect_success PERL 'difftool -x cat' '
echo branch >expect &&
echo master >>expect &&
git difftool --no-prompt -x cat branch >actual &&
test_cmp expect actual
'
test_expect_success PERL '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 PERL '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 PERL '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 PERL '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 PERL 'say no to the first file' '
(echo n && echo) >input &&
git difftool -x cat branch <input >output &&
stdin_contains m2 <output &&
stdin_contains br2 <output &&
stdin_doesnot_contain master <output &&
stdin_doesnot_contain branch <output
'
test_expect_success PERL 'say no to the second file' '
(echo && echo n) >input &&
git difftool -x cat branch <input >output &&
stdin_contains master <output &&
stdin_contains branch <output &&
stdin_doesnot_contain m2 <output &&
stdin_doesnot_contain br2 <output
'
test_expect_success PERL 'difftool --tool-help' '
git difftool --tool-help >output &&
stdin_contains tool <output
'
test_expect_success PERL 'setup change in subdirectory' '
git checkout master &&
mkdir sub &&
echo master >sub/sub &&
git add sub/sub &&
git commit -m "added sub/sub" &&
echo test >>file &&
echo test >>sub/sub &&
git add . &&
git commit -m "modified both"
'
test_expect_success PERL 'difftool -d' '
git difftool -d --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
'
test_expect_success PERL 'difftool --dir-diff' '
git difftool --dir-diff --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
'
write_script .git/CHECK_SYMLINKS <<\EOF
for f in file file2 sub/sub
do
echo "$f"
readlink "$2/$f"
done >actual
EOF
test_expect_success PERL,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
'
test_expect_success PERL 'difftool --dir-diff ignores --prompt' '
git difftool --dir-diff --prompt --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
'
test_expect_success PERL 'difftool --dir-diff from subdirectory' '
(
cd sub &&
git difftool --dir-diff --extcmd ls branch >output &&
stdin_contains sub <output &&
stdin_contains file <output
)
'
test_done