difftool: don't overwrite modified files

[thirdparty/git.git] / t / t7800-difftool.sh

diff --git a/t/t7800-difftool.sh b/t/t7800-difftool.sh
index e6a16cda79aba4794386b5f11fff61a429c9a3a2..017f55adf4d88c3e550812388d29b7a9a4d9db3d 100755 (executable)
--- a/t/t7800-difftool.sh
+++ b/t/t7800-difftool.sh
@@ -377,4 +377,34 @@ test_expect_success PERL,SYMLINKS 'difftool --dir-diff --symlink without unstage
        test_cmp actual expect
 '
 
+write_script modify-file <<\EOF
+echo "new content" >file
+EOF
+
+test_expect_success PERL '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 "$2" >tmpdir
+EOF
+
+test_expect_success PERL 'difftool --no-symlinks detects conflict ' '
+       (
+               TMPDIR=$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_done