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-rwxr-xr-xt/t7412-submodule-absorbgitdirs.sh128
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diff --git a/t/t7412-submodule-absorbgitdirs.sh b/t/t7412-submodule-absorbgitdirs.sh
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+++ b/t/t7412-submodule-absorbgitdirs.sh
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+#!/bin/sh
+
+test_description='Test submodule absorbgitdirs
+
+This test verifies that `git submodue absorbgitdirs` moves a submodules git
+directory into the superproject.
+'
+
+. ./test-lib.sh
+
+test_expect_success 'setup a real submodule' '
+ git init sub1 &&
+ test_commit -C sub1 first &&
+ git submodule add ./sub1 &&
+ test_tick &&
+ git commit -m superproject
+'
+
+test_expect_success 'absorb the git dir' '
+ >expect.1 &&
+ >expect.2 &&
+ >actual.1 &&
+ >actual.2 &&
+ git status >expect.1 &&
+ git -C sub1 rev-parse HEAD >expect.2 &&
+ git submodule absorbgitdirs &&
+ git fsck &&
+ test -f sub1/.git &&
+ test -d .git/modules/sub1 &&
+ git status >actual.1 &&
+ git -C sub1 rev-parse HEAD >actual.2 &&
+ test_cmp expect.1 actual.1 &&
+ test_cmp expect.2 actual.2
+'
+
+test_expect_success 'absorbing does not fail for deinitialized submodules' '
+ test_when_finished "git submodule update --init" &&
+ git submodule deinit --all &&
+ git submodule absorbgitdirs &&
+ test -d .git/modules/sub1 &&
+ test -d sub1 &&
+ ! test -e sub1/.git
+'
+
+test_expect_success 'setup nested submodule' '
+ git init sub1/nested &&
+ test_commit -C sub1/nested first_nested &&
+ git -C sub1 submodule add ./nested &&
+ test_tick &&
+ git -C sub1 commit -m "add nested" &&
+ git add sub1 &&
+ git commit -m "sub1 to include nested submodule"
+'
+
+test_expect_success 'absorb the git dir in a nested submodule' '
+ git status >expect.1 &&
+ git -C sub1/nested rev-parse HEAD >expect.2 &&
+ git submodule absorbgitdirs &&
+ test -f sub1/nested/.git &&
+ test -d .git/modules/sub1/modules/nested &&
+ git status >actual.1 &&
+ git -C sub1/nested rev-parse HEAD >actual.2 &&
+ test_cmp expect.1 actual.1 &&
+ test_cmp expect.2 actual.2
+'
+
+test_expect_success 're-setup nested submodule' '
+ # un-absorb the direct submodule, to test if the nested submodule
+ # is still correct (needs a rewrite of the gitfile only)
+ rm -rf sub1/.git &&
+ mv .git/modules/sub1 sub1/.git &&
+ GIT_WORK_TREE=. git -C sub1 config --unset core.worktree &&
+ # fixup the nested submodule
+ echo "gitdir: ../.git/modules/nested" >sub1/nested/.git &&
+ GIT_WORK_TREE=../../../nested git -C sub1/.git/modules/nested config \
+ core.worktree "../../../nested" &&
+ # make sure this re-setup is correct
+ git status --ignore-submodules=none
+'
+
+test_expect_success 'absorb the git dir in a nested submodule' '
+ git status >expect.1 &&
+ git -C sub1/nested rev-parse HEAD >expect.2 &&
+ git submodule absorbgitdirs &&
+ test -f sub1/.git &&
+ test -f sub1/nested/.git &&
+ test -d .git/modules/sub1/modules/nested &&
+ git status >actual.1 &&
+ git -C sub1/nested rev-parse HEAD >actual.2 &&
+ test_cmp expect.1 actual.1 &&
+ test_cmp expect.2 actual.2
+'
+
+test_expect_success 'setup a gitlink with missing .gitmodules entry' '
+ git init sub2 &&
+ test_commit -C sub2 first &&
+ git add sub2 &&
+ git commit -m superproject
+'
+
+test_expect_success 'absorbing the git dir fails for incomplete submodules' '
+ git status >expect.1 &&
+ git -C sub2 rev-parse HEAD >expect.2 &&
+ test_must_fail git submodule absorbgitdirs &&
+ git -C sub2 fsck &&
+ test -d sub2/.git &&
+ git status >actual &&
+ git -C sub2 rev-parse HEAD >actual.2 &&
+ test_cmp expect.1 actual.1 &&
+ test_cmp expect.2 actual.2
+'
+
+test_expect_success 'setup a submodule with multiple worktrees' '
+ # first create another unembedded git dir in a new submodule
+ git init sub3 &&
+ test_commit -C sub3 first &&
+ git submodule add ./sub3 &&
+ test_tick &&
+ git commit -m "add another submodule" &&
+ git -C sub3 worktree add ../sub3_second_work_tree
+'
+
+test_expect_success 'absorbing fails for a submodule with multiple worktrees' '
+ test_must_fail git submodule absorbgitdirs sub3 2>error &&
+ test_i18ngrep "not supported" error
+'
+
+test_done