git/t/t5700-clone-reference.sh
Junio C Hamano 1f7d1a53fe git-clone --reference: saner handling of borrowed symrefs.
When using --reference to borrow objects from a neighbouring
repository while cloning, we copy the entire set of refs under
temporary "refs/reference-tmp/refs" space and set up the object
alternates.  However, a textual symref copied this way would not
point at the right place, and causes later steps to emit error
messages (which is harmless but still alarming).  This is most
visible when using a clone created with the separate-remote
layout as a reference, because such a repository would have
refs/remotes/origin/HEAD with 'ref: refs/remotes/origin/master'
as its contents.

Although we do not create symbolic-link based refs anymore, they
have the same problem because they are always supposed to be
relative to refs/ hierarchy (we dereference by hand, so it only
is good for HEAD and nothing else).

In either case, the solution is simply to remove them after
copying under refs/reference-tmp; if a symref points at a true
ref, that true ref itself is enough to ensure that objects
reachable from it do not needlessly get fetched.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-02-04 03:28:15 -08:00

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#!/bin/sh
#
# Copyright (C) 2006 Martin Waitz <tali@admingilde.org>
#
test_description='test clone --reference'
. ./test-lib.sh
base_dir=`pwd`
test_expect_success 'preparing first repository' \
'test_create_repo A && cd A &&
echo first > file1 &&
git add file1 &&
git commit -m initial'
cd "$base_dir"
test_expect_success 'preparing second repository' \
'git clone A B && cd B &&
echo second > file2 &&
git add file2 &&
git commit -m addition &&
git repack -a -d &&
git prune'
cd "$base_dir"
test_expect_success 'cloning with reference (-l -s)' \
'git clone -l -s --reference B A C'
cd "$base_dir"
test_expect_success 'existence of info/alternates' \
'test `wc -l <C/.git/objects/info/alternates` = 2'
cd "$base_dir"
test_expect_success 'pulling from reference' \
'cd C &&
git pull ../B'
cd "$base_dir"
test_expect_success 'that reference gets used' \
'cd C &&
echo "0 objects, 0 kilobytes" > expected &&
git count-objects > current &&
diff expected current'
cd "$base_dir"
test_expect_success 'cloning with reference (no -l -s)' \
'git clone --reference B A D'
cd "$base_dir"
test_expect_success 'existence of info/alternates' \
'test `wc -l <D/.git/objects/info/alternates` = 1'
cd "$base_dir"
test_expect_success 'pulling from reference' \
'cd D && git pull ../B'
cd "$base_dir"
test_expect_success 'that reference gets used' \
'cd D && echo "0 objects, 0 kilobytes" > expected &&
git count-objects > current &&
diff expected current'
cd "$base_dir"
test_expect_success 'updating origin' \
'cd A &&
echo third > file3 &&
git add file3 &&
git commit -m update &&
git repack -a -d &&
git prune'
cd "$base_dir"
test_expect_success 'pulling changes from origin' \
'cd C &&
git pull origin'
cd "$base_dir"
# the 2 local objects are commit and tree from the merge
test_expect_success 'that alternate to origin gets used' \
'cd C &&
echo "2 objects" > expected &&
git count-objects | cut -d, -f1 > current &&
diff expected current'
cd "$base_dir"
test_expect_success 'pulling changes from origin' \
'cd D &&
git pull origin'
cd "$base_dir"
# the 5 local objects are expected; file3 blob, commit in A to add it
# and its tree, and 2 are our tree and the merge commit.
test_expect_success 'check objects expected to exist locally' \
'cd D &&
echo "5 objects" > expected &&
git count-objects | cut -d, -f1 > current &&
diff expected current'
cd "$base_dir"
test_done