git/t/t7408-submodule-reference.sh
Fredrik Gustafsson 501770e1bb Move git-dir for submodules
Move git-dir for submodules into $GIT_DIR/modules/[name_of_submodule] of
the superproject. This is a step towards being able to delete submodule
directories without loosing the information from their .git directory
as that is now stored outside the submodules work tree.

This is done relying on the already existent .git-file functionality.
When adding or updating a submodule whose git directory is found under
$GIT_DIR/modules/[name_of_submodule], don't clone it again but simply
point the .git-file to it and remove the now stale index file from it.
The index will be recreated by the following checkout.

This patch will not affect already cloned submodules at all.

Tests that rely on .git being a directory have been fixed.

Signed-off-by: Fredrik Gustafsson <iveqy@iveqy.com>
Mentored-by: Jens Lehmann <Jens.Lehmann@web.de>
Mentored-by: Heiko Voigt <hvoigt@hvoigt.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2011-08-22 21:03:38 -07:00

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#!/bin/sh
#
# Copyright (c) 2009, Red Hat Inc, Author: Michael S. Tsirkin (mst@redhat.com)
#
test_description='test clone --reference'
. ./test-lib.sh
base_dir=`pwd`
U=$base_dir/UPLOAD_LOG
test_expect_success 'preparing first repository' \
'test_create_repo A && cd A &&
echo first > file1 &&
git add file1 &&
git commit -m A-initial'
cd "$base_dir"
test_expect_success 'preparing second repository' \
'git clone A B && cd B &&
echo second > file2 &&
git add file2 &&
git commit -m B-addition &&
git repack -a -d &&
git prune'
cd "$base_dir"
test_expect_success 'preparing supermodule' \
'test_create_repo super && cd super &&
echo file > file &&
git add file &&
git commit -m B-super-initial'
cd "$base_dir"
test_expect_success 'submodule add --reference' \
'cd super && git submodule add --reference ../B "file://$base_dir/A" sub &&
git commit -m B-super-added'
cd "$base_dir"
test_expect_success 'after add: existence of info/alternates' \
'test `wc -l <super/.git/modules/sub/objects/info/alternates` = 1'
cd "$base_dir"
test_expect_success 'that reference gets used with add' \
'cd super/sub &&
echo "0 objects, 0 kilobytes" > expected &&
git count-objects > current &&
diff expected current'
cd "$base_dir"
test_expect_success 'cloning supermodule' \
'git clone super super-clone'
cd "$base_dir"
test_expect_success 'update with reference' \
'cd super-clone && git submodule update --init --reference ../B'
cd "$base_dir"
test_expect_success 'after update: existence of info/alternates' \
'test `wc -l <super-clone/.git/modules/sub/objects/info/alternates` = 1'
cd "$base_dir"
test_expect_success 'that reference gets used with update' \
'cd super-clone/sub &&
echo "0 objects, 0 kilobytes" > expected &&
git count-objects > current &&
diff expected current'
cd "$base_dir"
test_done