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23d25e48f5
The previous code only checked out branches in cmd_add. This commit moves the branch-checkout logic into module_clone, where it can be shared by cmd_add and cmd_update. I also update the initial checkout command to use 'reset' to preserve branches setup during module_clone. With this change, folks cloning submodules for the first time via: $ git submodule update ... will get a local branch instead of a detached HEAD, unless they are using the default checkout-mode updates. This is a change from the previous situation where cmd_update always used checkout-mode logic (regardless of the requested update mode) for updates that triggered an initial clone, which always resulted in a detached HEAD. This commit does not change the logic for updates after the initial clone, which will continue to create detached HEADs for checkout-mode updates, and integrate remote work with the local HEAD (detached or not) in other modes. The motivation for the change is that developers doing local work inside the submodule are likely to select a non-checkout-mode for updates so their local work is integrated with upstream work. Developers who are not doing local submodule work stick with checkout-mode updates so any apparently local work is blown away during updates. For example, if upstream rolls back the remote branch or gitlinked commit to an earlier version, the checkout-mode developer wants their old submodule checkout to be rolled back as well, instead of getting a no-op merge/rebase with the rolled-back reference. By using the update mode to distinguish submodule developers from black-box submodule consumers, we can setup local branches for the developers who will want local branches, and stick with detached HEADs for the developers that don't care. Testing ======= In t7406, just-cloned checkouts now update to the gitlinked hash with 'reset', to preserve the local branch for situations where we're not on a detached HEAD. I also added explicit tests to t7406 for HEAD attachement after cloning updates, showing that it depends on their update mode: * Checkout-mode updates get detached HEADs * Everyone else gets a local branch, matching the configured submodule.<name>.branch and defaulting to master. The 'initial-setup' tag makes it easy to reset the superproject to a known state, as several earlier tests commit to submodules and commit the changed gitlinks to the superproject, but don't push the new submodule commits to the upstream subprojects. This makes it impossible to checkout the current super master, because it references submodule commits that don't exist in the upstream subprojects. For a specific example, see the tests that currently generate the 'two_new_submodule_commits' commits. Documentation ============= I updated the docs to describe the 'submodule update' modes in detail. The old documentation did not distinguish between cloning and non-cloning updates and lacked clarity on which operations would lead to detached HEADs, and which would not. The new documentation addresses these issues while updating the docs to reflect the changes introduced by this commit's explicit local branch creation in module_clone. I also add '--checkout' to the usage summary and group the update-mode options into a single set. Signed-off-by: W. Trevor King <wking@tremily.us> Signed-off-by: Junio C Hamano <gitster@pobox.com>
805 lines
19 KiB
Bash
Executable file
805 lines
19 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2009 Red Hat, Inc.
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#
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test_description='Test updating submodules
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This test verifies that "git submodule update" detaches the HEAD of the
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submodule and "git submodule update --rebase/--merge" does not detach the HEAD.
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'
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. ./test-lib.sh
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compare_head()
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{
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sha_master=`git rev-list --max-count=1 master`
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sha_head=`git rev-list --max-count=1 HEAD`
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test "$sha_master" = "$sha_head"
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}
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test_expect_success 'setup a submodule tree' '
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echo file > file &&
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git add file &&
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test_tick &&
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git commit -m upstream &&
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git clone . super &&
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git clone super submodule &&
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git clone super rebasing &&
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git clone super merging &&
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git clone super none &&
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(cd super &&
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git submodule add ../submodule submodule &&
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test_tick &&
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git commit -m "submodule" &&
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git submodule init submodule
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) &&
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(cd submodule &&
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echo "line2" > file &&
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git add file &&
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git commit -m "Commit 2"
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) &&
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(cd super &&
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(cd submodule &&
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git pull --rebase origin
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) &&
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git add submodule &&
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git commit -m "submodule update"
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) &&
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(cd super &&
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git submodule add ../rebasing rebasing &&
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test_tick &&
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git commit -m "rebasing"
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) &&
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(cd super &&
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git submodule add ../merging merging &&
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test_tick &&
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git commit -m "rebasing"
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) &&
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(cd super &&
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git submodule add ../none none &&
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test_tick &&
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git commit -m "none"
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) &&
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(cd super &&
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git tag initial-setup
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)
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'
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test_expect_success 'submodule update detaching the HEAD ' '
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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! compare_head
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)
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'
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test_expect_success 'submodule update from subdirectory' '
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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mkdir super/sub &&
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(cd super/sub &&
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(cd ../submodule &&
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compare_head
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) &&
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git submodule update ../submodule &&
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cd ../submodule &&
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! compare_head
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)
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'
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apos="'";
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test_expect_success 'submodule update does not fetch already present commits' '
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(cd submodule &&
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echo line3 >> file &&
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git add file &&
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test_tick &&
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git commit -m "upstream line3"
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) &&
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(cd super/submodule &&
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head=$(git rev-parse --verify HEAD) &&
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echo "Submodule path ${apos}submodule$apos: checked out $apos$head$apos" > ../../expected &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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git submodule update > ../actual 2> ../actual.err
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) &&
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test_i18ncmp expected actual &&
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! test -s actual.err
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'
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test_expect_success 'submodule update should fail due to local changes' '
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(cd super/submodule &&
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git reset --hard HEAD~1 &&
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echo "local change" > file
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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test_must_fail git submodule update submodule
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)
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'
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test_expect_success 'submodule update should throw away changes with --force ' '
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --force submodule &&
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cd submodule &&
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! compare_head
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)
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'
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test_expect_success 'submodule update --force forcibly checks out submodules' '
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(cd super &&
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(cd submodule &&
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rm -f file
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) &&
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git submodule update --force submodule &&
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(cd submodule &&
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test "$(git status -s file)" = ""
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)
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)
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'
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test_expect_success 'submodule update --remote should fetch upstream changes' '
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(cd submodule &&
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echo line4 >> file &&
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git add file &&
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test_tick &&
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git commit -m "upstream line4"
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) &&
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(cd super &&
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git submodule update --remote --force submodule &&
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cd submodule &&
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test "$(git log -1 --oneline)" = "$(GIT_DIR=../../submodule/.git git log -1 --oneline)"
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)
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'
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test_expect_success 'local config should override .gitmodules branch' '
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(cd submodule &&
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git checkout -b test-branch &&
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echo line5 >> file &&
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git add file &&
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test_tick &&
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git commit -m "upstream line5" &&
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git checkout master
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) &&
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(cd super &&
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git config submodule.submodule.branch test-branch &&
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git submodule update --remote --force submodule &&
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cd submodule &&
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test "$(git log -1 --oneline)" = "$(GIT_DIR=../../submodule/.git git log -1 --oneline test-branch)"
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)
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'
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test_expect_success 'submodule update --rebase staying on master' '
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(cd super/submodule &&
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git checkout master
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --rebase submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update --merge staying on master' '
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --merge submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - rebase in .git/config' '
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(cd super &&
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git config submodule.submodule.update rebase
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - checkout in .git/config but --rebase given' '
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(cd super &&
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git config submodule.submodule.update checkout
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --rebase submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - merge in .git/config' '
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(cd super &&
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git config submodule.submodule.update merge
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - checkout in .git/config but --merge given' '
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(cd super &&
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git config submodule.submodule.update checkout
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) &&
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(cd super/submodule &&
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git reset --hard HEAD~1
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update --merge submodule &&
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cd submodule &&
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compare_head
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)
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'
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test_expect_success 'submodule update - checkout in .git/config' '
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(cd super &&
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git config submodule.submodule.update checkout
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) &&
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(cd super/submodule &&
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git reset --hard HEAD^
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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! compare_head
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)
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'
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test_expect_success 'submodule update - command in .git/config' '
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(cd super &&
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git config submodule.submodule.update "!git checkout"
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) &&
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(cd super/submodule &&
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git reset --hard HEAD^
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) &&
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(cd super &&
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(cd submodule &&
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compare_head
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) &&
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git submodule update submodule &&
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cd submodule &&
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! compare_head
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)
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'
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test_expect_success 'submodule update - command in .git/config catches failure' '
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(cd super &&
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git config submodule.submodule.update "!false"
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) &&
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(cd super/submodule &&
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git reset --hard HEAD^
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) &&
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(cd super &&
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test_must_fail git submodule update submodule
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)
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'
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test_expect_success 'submodule init does not copy command into .git/config' '
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(cd super &&
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H=$(git ls-files -s submodule | cut -d" " -f2) &&
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mkdir submodule1 &&
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git update-index --add --cacheinfo 160000 $H submodule1 &&
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git config -f .gitmodules submodule.submodule1.path submodule1 &&
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git config -f .gitmodules submodule.submodule1.url ../submodule &&
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git config -f .gitmodules submodule.submodule1.update !false &&
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git submodule init submodule1 &&
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echo "none" >expect &&
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git config submodule.submodule1.update >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success 'submodule init picks up rebase' '
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(cd super &&
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git config -f .gitmodules submodule.rebasing.update rebase &&
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git submodule init rebasing &&
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test "rebase" = "$(git config submodule.rebasing.update)"
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)
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'
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test_expect_success 'submodule init picks up merge' '
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(cd super &&
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git config -f .gitmodules submodule.merging.update merge &&
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git submodule init merging &&
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test "merge" = "$(git config submodule.merging.update)"
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)
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'
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test_expect_success 'submodule update --merge - ignores --merge for new submodules' '
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(cd super &&
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rm -rf submodule &&
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git submodule update submodule &&
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git status -s submodule >expect &&
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rm -rf submodule &&
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git submodule update --merge submodule &&
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git status -s submodule >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success 'submodule update --rebase - ignores --rebase for new submodules' '
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(cd super &&
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rm -rf submodule &&
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git submodule update submodule &&
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git status -s submodule >expect &&
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rm -rf submodule &&
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git submodule update --rebase submodule &&
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git status -s submodule >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success 'submodule update ignores update=merge config for new submodules' '
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(cd super &&
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rm -rf submodule &&
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git submodule update submodule &&
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git status -s submodule >expect &&
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rm -rf submodule &&
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git config submodule.submodule.update merge &&
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git submodule update submodule &&
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git status -s submodule >actual &&
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git config --unset submodule.submodule.update &&
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test_cmp expect actual
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)
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'
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test_expect_success 'submodule update ignores update=rebase config for new submodules' '
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(cd super &&
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rm -rf submodule &&
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git submodule update submodule &&
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git status -s submodule >expect &&
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rm -rf submodule &&
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git config submodule.submodule.update rebase &&
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git submodule update submodule &&
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git status -s submodule >actual &&
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git config --unset submodule.submodule.update &&
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test_cmp expect actual
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)
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'
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test_expect_success 'submodule init picks up update=none' '
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(cd super &&
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git config -f .gitmodules submodule.none.update none &&
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git submodule init none &&
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test "none" = "$(git config submodule.none.update)"
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)
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'
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test_expect_success 'submodule update - update=none in .git/config' '
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(cd super &&
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git config submodule.submodule.update none &&
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(cd submodule &&
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git checkout master &&
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compare_head
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) &&
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git diff --raw | grep " submodule" &&
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git submodule update &&
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git diff --raw | grep " submodule" &&
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(cd submodule &&
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compare_head
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) &&
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git config --unset submodule.submodule.update &&
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git submodule update submodule
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)
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'
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test_expect_success 'submodule update - update=none in .git/config but --checkout given' '
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(cd super &&
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git config submodule.submodule.update none &&
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(cd submodule &&
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git checkout master &&
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compare_head
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) &&
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git diff --raw | grep " submodule" &&
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git submodule update --checkout &&
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test_must_fail git diff --raw \| grep " submodule" &&
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(cd submodule &&
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test_must_fail compare_head
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) &&
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git config --unset submodule.submodule.update
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)
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'
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test_expect_success 'submodule update --init skips submodule with update=none' '
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(cd super &&
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git add .gitmodules &&
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git commit -m ".gitmodules"
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) &&
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git clone super cloned &&
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(cd cloned &&
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git submodule update --init &&
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test -e submodule/.git &&
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test_must_fail test -e none/.git
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)
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'
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test_expect_success 'submodule update continues after checkout error' '
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(cd super &&
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git reset --hard HEAD &&
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git submodule add ../submodule submodule2 &&
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git submodule init &&
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git commit -am "new_submodule" &&
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(cd submodule2 &&
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git rev-parse --verify HEAD >../expect
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) &&
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(cd submodule &&
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test_commit "update_submodule" file
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) &&
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(cd submodule2 &&
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test_commit "update_submodule2" file
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) &&
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git add submodule &&
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git add submodule2 &&
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git commit -m "two_new_submodule_commits" &&
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(cd submodule &&
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echo "" > file
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) &&
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git checkout HEAD^ &&
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test_must_fail git submodule update &&
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(cd submodule2 &&
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git rev-parse --verify HEAD >../actual
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) &&
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test_cmp expect actual
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)
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'
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test_expect_success 'submodule update continues after recursive checkout error' '
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(cd super &&
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git reset --hard HEAD &&
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git checkout master &&
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git submodule update &&
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(cd submodule &&
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git submodule add ../submodule subsubmodule &&
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git submodule init &&
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git commit -m "new_subsubmodule"
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) &&
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git add submodule &&
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git commit -m "update_submodule" &&
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(cd submodule &&
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(cd subsubmodule &&
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test_commit "update_subsubmodule" file
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) &&
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git add subsubmodule &&
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test_commit "update_submodule_again" file &&
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(cd subsubmodule &&
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test_commit "update_subsubmodule_again" file
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) &&
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test_commit "update_submodule_again_again" file
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) &&
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(cd submodule2 &&
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git rev-parse --verify HEAD >../expect &&
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test_commit "update_submodule2_again" file
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) &&
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git add submodule &&
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git add submodule2 &&
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git commit -m "new_commits" &&
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git checkout HEAD^ &&
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(cd submodule &&
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git checkout HEAD^ &&
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(cd subsubmodule &&
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echo "" > file
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)
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) &&
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test_must_fail git submodule update --recursive &&
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|
(cd submodule2 &&
|
|
git rev-parse --verify HEAD >../actual
|
|
) &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update exit immediately in case of merge conflict' '
|
|
(cd super &&
|
|
git checkout master &&
|
|
git reset --hard HEAD &&
|
|
(cd submodule &&
|
|
(cd subsubmodule &&
|
|
git reset --hard HEAD
|
|
)
|
|
) &&
|
|
git submodule update --recursive &&
|
|
(cd submodule &&
|
|
test_commit "update_submodule_2" file
|
|
) &&
|
|
(cd submodule2 &&
|
|
test_commit "update_submodule2_2" file
|
|
) &&
|
|
git add submodule &&
|
|
git add submodule2 &&
|
|
git commit -m "two_new_submodule_commits" &&
|
|
(cd submodule &&
|
|
git checkout master &&
|
|
test_commit "conflict" file &&
|
|
echo "conflict" > file
|
|
) &&
|
|
git checkout HEAD^ &&
|
|
(cd submodule2 &&
|
|
git rev-parse --verify HEAD >../expect
|
|
) &&
|
|
git config submodule.submodule.update merge &&
|
|
test_must_fail git submodule update &&
|
|
(cd submodule2 &&
|
|
git rev-parse --verify HEAD >../actual
|
|
) &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update exit immediately after recursive rebase error' '
|
|
(cd super &&
|
|
git checkout master &&
|
|
git reset --hard HEAD &&
|
|
(cd submodule &&
|
|
git reset --hard HEAD &&
|
|
git submodule update --recursive
|
|
) &&
|
|
(cd submodule &&
|
|
test_commit "update_submodule_3" file
|
|
) &&
|
|
(cd submodule2 &&
|
|
test_commit "update_submodule2_3" file
|
|
) &&
|
|
git add submodule &&
|
|
git add submodule2 &&
|
|
git commit -m "two_new_submodule_commits" &&
|
|
(cd submodule &&
|
|
git checkout master &&
|
|
test_commit "conflict2" file &&
|
|
echo "conflict" > file
|
|
) &&
|
|
git checkout HEAD^ &&
|
|
(cd submodule2 &&
|
|
git rev-parse --verify HEAD >../expect
|
|
) &&
|
|
git config submodule.submodule.update rebase &&
|
|
test_must_fail git submodule update &&
|
|
(cd submodule2 &&
|
|
git rev-parse --verify HEAD >../actual
|
|
) &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
test_expect_success 'add different submodules to the same path' '
|
|
(cd super &&
|
|
git submodule add ../submodule s1 &&
|
|
test_must_fail git submodule add ../merging s1
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule add places git-dir in superprojects git-dir' '
|
|
(cd super &&
|
|
mkdir deeper &&
|
|
git submodule add ../submodule deeper/submodule &&
|
|
(cd deeper/submodule &&
|
|
git log > ../../expected
|
|
) &&
|
|
(cd .git/modules/deeper/submodule &&
|
|
git log > ../../../../actual
|
|
) &&
|
|
test_cmp actual expected
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update places git-dir in superprojects git-dir' '
|
|
(cd super &&
|
|
git commit -m "added submodule"
|
|
) &&
|
|
git clone super super2 &&
|
|
(cd super2 &&
|
|
git submodule init deeper/submodule &&
|
|
git submodule update &&
|
|
(cd deeper/submodule &&
|
|
git log > ../../expected
|
|
) &&
|
|
(cd .git/modules/deeper/submodule &&
|
|
git log > ../../../../actual
|
|
) &&
|
|
test_cmp actual expected
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule add places git-dir in superprojects git-dir recursive' '
|
|
(cd super2 &&
|
|
(cd deeper/submodule &&
|
|
git submodule add ../submodule subsubmodule &&
|
|
(cd subsubmodule &&
|
|
git log > ../../../expected
|
|
) &&
|
|
git commit -m "added subsubmodule" &&
|
|
git push origin :
|
|
) &&
|
|
(cd .git/modules/deeper/submodule/modules/subsubmodule &&
|
|
git log > ../../../../../actual
|
|
) &&
|
|
git add deeper/submodule &&
|
|
git commit -m "update submodule" &&
|
|
git push origin : &&
|
|
test_cmp actual expected
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update places git-dir in superprojects git-dir recursive' '
|
|
mkdir super_update_r &&
|
|
(cd super_update_r &&
|
|
git init --bare
|
|
) &&
|
|
mkdir subsuper_update_r &&
|
|
(cd subsuper_update_r &&
|
|
git init --bare
|
|
) &&
|
|
mkdir subsubsuper_update_r &&
|
|
(cd subsubsuper_update_r &&
|
|
git init --bare
|
|
) &&
|
|
git clone subsubsuper_update_r subsubsuper_update_r2 &&
|
|
(cd subsubsuper_update_r2 &&
|
|
test_commit "update_subsubsuper" file &&
|
|
git push origin master
|
|
) &&
|
|
git clone subsuper_update_r subsuper_update_r2 &&
|
|
(cd subsuper_update_r2 &&
|
|
test_commit "update_subsuper" file &&
|
|
git submodule add ../subsubsuper_update_r subsubmodule &&
|
|
git commit -am "subsubmodule" &&
|
|
git push origin master
|
|
) &&
|
|
git clone super_update_r super_update_r2 &&
|
|
(cd super_update_r2 &&
|
|
test_commit "update_super" file &&
|
|
git submodule add ../subsuper_update_r submodule &&
|
|
git commit -am "submodule" &&
|
|
git push origin master
|
|
) &&
|
|
rm -rf super_update_r2 &&
|
|
git clone super_update_r super_update_r2 &&
|
|
(cd super_update_r2 &&
|
|
git submodule update --init --recursive >actual &&
|
|
test_i18ngrep "Submodule path .submodule/subsubmodule.: .git reset --hard -q" actual &&
|
|
(cd submodule/subsubmodule &&
|
|
git log > ../../expected
|
|
) &&
|
|
(cd .git/modules/submodule/modules/subsubmodule
|
|
git log > ../../../../../actual
|
|
)
|
|
test_cmp actual expected
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule add properly re-creates deeper level submodules' '
|
|
(cd super &&
|
|
git reset --hard master &&
|
|
rm -rf deeper/ &&
|
|
git submodule add --force ../submodule deeper/submodule
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update properly revives a moved submodule' '
|
|
(cd super &&
|
|
H=$(git rev-parse --short HEAD) &&
|
|
git commit -am "pre move" &&
|
|
H2=$(git rev-parse --short HEAD) &&
|
|
git status | sed "s/$H/XXX/" >expect &&
|
|
H=$(cd submodule2; git rev-parse HEAD) &&
|
|
git rm --cached submodule2 &&
|
|
rm -rf submodule2 &&
|
|
mkdir -p "moved/sub module" &&
|
|
git update-index --add --cacheinfo 160000 $H "moved/sub module" &&
|
|
git config -f .gitmodules submodule.submodule2.path "moved/sub module"
|
|
git commit -am "post move" &&
|
|
git submodule update &&
|
|
git status | sed "s/$H2/XXX/" >actual &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
test_expect_success SYMLINKS 'submodule update can handle symbolic links in pwd' '
|
|
mkdir -p linked/dir &&
|
|
ln -s linked/dir linkto &&
|
|
(cd linkto &&
|
|
git clone "$TRASH_DIRECTORY"/super_update_r2 super &&
|
|
(cd super &&
|
|
git submodule update --init --recursive
|
|
)
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update clone shallow submodule' '
|
|
git clone cloned super3 &&
|
|
pwd=$(pwd)
|
|
(cd super3 &&
|
|
sed -e "s#url = ../#url = file://$pwd/#" <.gitmodules >.gitmodules.tmp &&
|
|
mv -f .gitmodules.tmp .gitmodules &&
|
|
git submodule update --init --depth=3
|
|
(cd submodule &&
|
|
test 1 = $(git log --oneline | wc -l)
|
|
)
|
|
)
|
|
'
|
|
|
|
test_expect_success 'submodule update --checkout clones detached HEAD' '
|
|
git clone super super4 &&
|
|
echo "detached HEAD" >expected &&
|
|
(cd super4 &&
|
|
git reset --hard initial-setup &&
|
|
git submodule init submodule &&
|
|
git submodule update >> /tmp/log 2>&1 &&
|
|
(cd submodule &&
|
|
git symbolic-ref HEAD > ../../actual ||
|
|
echo "detached HEAD" > ../../actual
|
|
)
|
|
) &&
|
|
test_cmp actual expected &&
|
|
rm -rf super4
|
|
'
|
|
|
|
test_expect_success 'submodule update --merge clones attached HEAD' '
|
|
git clone super super4 &&
|
|
echo "refs/heads/master" >expected &&
|
|
(cd super4 &&
|
|
git reset --hard initial-setup &&
|
|
git submodule init submodule &&
|
|
git config submodule.submodule.update merge &&
|
|
git submodule update --merge &&
|
|
(cd submodule &&
|
|
git symbolic-ref HEAD > ../../actual ||
|
|
echo "detached HEAD" > ../../actual
|
|
)
|
|
) &&
|
|
test_cmp actual expected &&
|
|
rm -rf super4
|
|
'
|
|
|
|
test_done
|