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31224cbdc7
When `--recursive` and `--reference` is given, it is reasonable to
expect that the submodules are created with references to the submodules
of the given alternate for the superproject.
An initial attempt to do this was presented to the mailing list, which
used flags that are passed around ("--super-reference") that instructed
the submodule clone to look for a reference in the submodules of the
referenced superproject. This is not well thought out, as any further
`submodule update` should also respect the initial setup.
When a new submodule is added to the superproject and the alternate
of the superproject does not know about that submodule yet, we rather
error out informing the user instead of being unclear if we did or did
not use a submodules alternate.
To solve this problem introduce new options that store the configuration
for what the user wanted originally.
Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
128 lines
3.6 KiB
Bash
Executable file
128 lines
3.6 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2009, Red Hat Inc, Author: Michael S. Tsirkin (mst@redhat.com)
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#
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test_description='test clone --reference'
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. ./test-lib.sh
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base_dir=$(pwd)
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test_alternate_is_used () {
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alternates_file="$1" &&
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working_dir="$2" &&
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test_line_count = 1 "$alternates_file" &&
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echo "0 objects, 0 kilobytes" >expect &&
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git -C "$working_dir" count-objects >actual &&
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test_cmp expect actual
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}
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test_expect_success 'preparing first repository' '
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test_create_repo A &&
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(
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cd A &&
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echo first >file1 &&
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git add file1 &&
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git commit -m A-initial
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)
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'
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test_expect_success 'preparing second repository' '
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git clone A B &&
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(
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cd B &&
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echo second >file2 &&
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git add file2 &&
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git commit -m B-addition &&
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git repack -a -d &&
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git prune
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)
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'
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test_expect_success 'preparing superproject' '
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test_create_repo super &&
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(
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cd super &&
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echo file >file &&
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git add file &&
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git commit -m B-super-initial
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)
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'
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test_expect_success 'submodule add --reference uses alternates' '
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(
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cd super &&
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git submodule add --reference ../B "file://$base_dir/A" sub &&
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git commit -m B-super-added &&
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git repack -ad
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) &&
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test_alternate_is_used super/.git/modules/sub/objects/info/alternates super/sub
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'
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test_expect_success 'that reference gets used with add' '
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(
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cd super/sub &&
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echo "0 objects, 0 kilobytes" >expected &&
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git count-objects >current &&
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diff expected current
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)
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'
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# The tests up to this point, and repositories created by them
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# (A, B, super and super/sub), are about setting up the stage
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# for subsequent tests and meant to be kept throughout the
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# remainder of the test.
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# Tests from here on, if they create their own test repository,
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# are expected to clean after themselves.
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test_expect_success 'updating superproject keeps alternates' '
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test_when_finished "rm -rf super-clone" &&
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git clone super super-clone &&
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git -C super-clone submodule update --init --reference ../B &&
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test_alternate_is_used super-clone/.git/modules/sub/objects/info/alternates super-clone/sub
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'
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test_expect_success 'submodules use alternates when cloning a superproject' '
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test_when_finished "rm -rf super-clone" &&
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git clone --reference super --recursive super super-clone &&
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(
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cd super-clone &&
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# test superproject has alternates setup correctly
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test_alternate_is_used .git/objects/info/alternates . &&
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# test submodule has correct setup
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test_alternate_is_used .git/modules/sub/objects/info/alternates sub
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)
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'
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test_expect_success 'missing submodule alternate fails clone and submodule update' '
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test_when_finished "rm -rf super-clone" &&
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git clone super super2 &&
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test_must_fail git clone --recursive --reference super2 super2 super-clone &&
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(
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cd super-clone &&
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# test superproject has alternates setup correctly
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test_alternate_is_used .git/objects/info/alternates . &&
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# update of the submodule succeeds
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test_must_fail git submodule update --init &&
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# and we have no alternates:
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test_must_fail test_alternate_is_used .git/modules/sub/objects/info/alternates sub &&
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test_must_fail test_path_is_file sub/file1
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)
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'
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test_expect_success 'ignoring missing submodule alternates passes clone and submodule update' '
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test_when_finished "rm -rf super-clone" &&
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git clone --reference-if-able super2 --recursive super2 super-clone &&
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(
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cd super-clone &&
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# test superproject has alternates setup correctly
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test_alternate_is_used .git/objects/info/alternates . &&
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# update of the submodule succeeds
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git submodule update --init &&
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# and we have no alternates:
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test_must_fail test_alternate_is_used .git/modules/sub/objects/info/alternates sub &&
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test_path_is_file sub/file1
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)
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'
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test_done
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