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Diffstat (limited to 't/t7800-difftool.sh')
| -rwxr-xr-x | t/t7800-difftool.sh | 868 |
1 files changed, 868 insertions, 0 deletions
diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh new file mode 100755 index 0000000..24297e2 --- /dev/null +++ b/t/t7800-difftool.sh @@ -0,0 +1,868 @@ +#!/bin/sh +# +# Copyright (c) 2009, 2010, 2012, 2013 David Aguilar +# + +test_description='git-difftool + +Testing basic diff tool invocation +' + +GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main +export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME + +. ./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 && + test_i18ngrep ^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 && + test_i18ngrep ^usage: output +' + +# Create a file on main and change it on branch +test_expect_success 'setup' ' + echo main >file && + git add file && + git commit -m "added file" && + + git checkout -b branch main && + echo branch >file && + git commit -a -m "branch changed file" && + git checkout main +' + +# 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 main >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 main >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 failed + exit 1 + EOF + >for-diff && + git add for-diff && + test_must_fail git difftool -y --trust-exit-code \ + --extcmd .git/fail-right-file branch >actual && + test_line_count = 1 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 && + git difftool --gui --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 && + git difftool --gui --no-prompt branch >actual && + test_cmp expect actual && + + # set merge.tool, diff.tool to something bogus, merge.guitool to test-tool + test_config diff.tool bogus-tool && + test_config merge.guitool test-tool && + git difftool --gui --no-prompt branch >actual && + test_cmp expect actual && + + # set merge.tool, diff.tool, merge.guitool to something bogus, diff.guitool to test-tool + test_config merge.guitool bogus-tool && + test_config diff.guitool test-tool && + git difftool --gui --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 main >>expect && + git difftool --no-prompt --extcmd=cat branch >actual && + test_cmp expect actual +' + +test_expect_success 'difftool --extcmd cat' ' + echo branch >expect && + echo main >>expect && + git difftool --no-prompt --extcmd=cat branch >actual && + test_cmp expect actual +' + +test_expect_success 'difftool -x cat' ' + echo branch >expect && + echo main >>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 main >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 main 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 main +' + +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 main 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 main 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 main 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 main && + mkdir sub && + echo main >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$" output +' + +run_dir_diff_test 'difftool --dir-diff avoids repeated slashes in TMPDIR' ' + TMPDIR="${TMPDIR:-/tmp}////" \ + git difftool --dir-diff $symlinks --extcmd echo branch >output && + grep -v // output >actual && + test_line_count = 1 actual +' + +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 $symlinks --extcmd ls branch main >output && + grep "^file2$" 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 main && + 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 --symlinks without unstaged changes' ' + cat >expect <<-EOF && + file + $PWD/file + file2 + $PWD/file2 + sub/sub + $PWD/sub/sub + EOF + git difftool --dir-diff --symlinks \ + --extcmd "./.git/CHECK_SYMLINKS" branch HEAD && + test_cmp expect actual +' + +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 && + test_config_global protocol.file.allow always && + 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 && + 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 && + 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_expect_success SYMLINKS 'difftool --dir-diff writes symlinks as raw text' ' + # Start out on a branch called "branch-init". + git init -b branch-init symlink-files && + ( + cd symlink-files && + # This test ensures that symlinks are written as raw text. + # The "cat" tools output link and file contents. + git config difftool.cat-left-link.cmd "cat \"\$LOCAL/link\"" && + git config difftool.cat-left-a.cmd "cat \"\$LOCAL/file-a\"" && + git config difftool.cat-right-link.cmd "cat \"\$REMOTE/link\"" && + git config difftool.cat-right-b.cmd "cat \"\$REMOTE/file-b\"" && + + # Record the empty initial state so that we can come back here + # later and not have to consider the any cases where difftool + # will create symlinks back into the worktree. + test_tick && + git commit --allow-empty -m init && + + # Create a file called "file-a" with a symlink pointing to it. + git switch -c branch-a && + echo a >file-a && + ln -s file-a link && + git add file-a link && + test_tick && + git commit -m link-to-file-a && + + # Create a file called "file-b" and point the symlink to it. + git switch -c branch-b && + echo b >file-b && + rm link && + ln -s file-b link && + git add file-b link && + git rm file-a && + test_tick && + git commit -m link-to-file-b && + + # Checkout the initial branch so that the --symlinks behavior is + # not activated. The two directories should be completely + # independent with no symlinks pointing back here. + git switch branch-init && + + # The left link must be "file-a" and "file-a" must contain "a". + echo file-a >expect && + git difftool --symlinks --dir-diff --tool cat-left-link \ + branch-a branch-b >actual && + test_cmp expect actual && + + echo a >expect && + git difftool --symlinks --dir-diff --tool cat-left-a \ + branch-a branch-b >actual && + test_cmp expect actual && + + # The right link must be "file-b" and "file-b" must contain "b". + echo file-b >expect && + git difftool --symlinks --dir-diff --tool cat-right-link \ + branch-a branch-b >actual && + test_cmp expect actual && + + echo b >expect && + git difftool --symlinks --dir-diff --tool cat-right-b \ + branch-a branch-b >actual && + test_cmp expect actual + ) +' + +test_expect_success 'add -N and difftool -d' ' + test_when_finished git reset --hard && + + test_write_lines A B C >intent-to-add && + git add -N intent-to-add && + git difftool --dir-diff --extcmd ls +' + +test_expect_success 'difftool --cached with unmerged files' ' + test_when_finished git reset --hard && + + test_commit conflicting && + test_commit conflict-a conflict.t a && + git reset --hard conflicting && + test_commit conflict-b conflict.t b && + test_must_fail git merge conflict-a && + + git difftool --cached --no-prompt >output && + test_must_be_empty output +' + +test_expect_success 'outside worktree' ' + echo 1 >1 && + echo 2 >2 && + test_expect_code 1 nongit git \ + -c diff.tool=echo -c difftool.echo.cmd="echo \$LOCAL \$REMOTE" \ + difftool --no-prompt --no-index ../1 ../2 >actual && + echo "../1 ../2" >expect && + test_cmp expect actual +' + +test_expect_success 'difftool --gui, --tool and --extcmd are mutually exclusive' ' + difftool_test_setup && + test_must_fail git difftool --gui --tool=test-tool && + test_must_fail git difftool --gui --extcmd=cat && + test_must_fail git difftool --tool=test-tool --extcmd=cat && + test_must_fail git difftool --gui --tool=test-tool --extcmd=cat +' + +test_expect_success 'difftool --rotate-to' ' + difftool_test_setup && + test_when_finished git reset --hard && + echo 1 >1 && + echo 2 >2 && + echo 4 >4 && + git add 1 2 4 && + git commit -a -m "124" && + git difftool --no-prompt --extcmd=cat --rotate-to="2" HEAD^ >output && + cat >expect <<-\EOF && + 2 + 4 + 1 + EOF + test_cmp output expect +' + +test_expect_success 'difftool --skip-to' ' + difftool_test_setup && + test_when_finished git reset --hard && + git difftool --no-prompt --extcmd=cat --skip-to="2" HEAD^ >output && + cat >expect <<-\EOF && + 2 + 4 + EOF + test_cmp output expect +' + +test_expect_success 'difftool --rotate/skip-to error condition' ' + test_must_fail git difftool --no-prompt --extcmd=cat --rotate-to="3" HEAD^ && + test_must_fail git difftool --no-prompt --extcmd=cat --skip-to="3" HEAD^ +' +test_done |