test_cmp expect actual
'
+test_expect_success "fetch new submodule commits on-demand outside standard refspec" '
+ # add a second submodule and ensure it is around in downstream first
+ git clone submodule sub1 &&
+ git submodule add ./sub1 &&
+ git commit -m "adding a second submodule" &&
+ git -C downstream pull &&
+ git -C downstream submodule update --init --recursive &&
+
+ git checkout --detach &&
+
+ C=$(git -C submodule commit-tree -m "new change outside refs/heads" HEAD^{tree}) &&
+ git -C submodule update-ref refs/changes/1 $C &&
+ git update-index --cacheinfo 160000 $C submodule &&
+ test_tick &&
+
+ D=$(git -C sub1 commit-tree -m "new change outside refs/heads" HEAD^{tree}) &&
+ git -C sub1 update-ref refs/changes/2 $D &&
+ git update-index --cacheinfo 160000 $D sub1 &&
+
+ git commit -m "updated submodules outside of refs/heads" &&
+ E=$(git rev-parse HEAD) &&
+ git update-ref refs/changes/3 $E &&
+ (
+ cd downstream &&
+ git fetch --recurse-submodules origin refs/changes/3:refs/heads/my_branch &&
+ git -C submodule cat-file -t $C &&
+ git -C sub1 cat-file -t $D &&
+ git checkout --recurse-submodules FETCH_HEAD
+ )
+'
+
+test_expect_success 'fetch new submodule commit on-demand in FETCH_HEAD' '
+ # depends on the previous test for setup
+
+ C=$(git -C submodule commit-tree -m "another change outside refs/heads" HEAD^{tree}) &&
+ git -C submodule update-ref refs/changes/4 $C &&
+ git update-index --cacheinfo 160000 $C submodule &&
+ test_tick &&
+
+ D=$(git -C sub1 commit-tree -m "another change outside refs/heads" HEAD^{tree}) &&
+ git -C sub1 update-ref refs/changes/5 $D &&
+ git update-index --cacheinfo 160000 $D sub1 &&
+
+ git commit -m "updated submodules outside of refs/heads" &&
+ E=$(git rev-parse HEAD) &&
+ git update-ref refs/changes/6 $E &&
+ (
+ cd downstream &&
+ git fetch --recurse-submodules origin refs/changes/6 &&
+ git -C submodule cat-file -t $C &&
+ git -C sub1 cat-file -t $D &&
+ git checkout --recurse-submodules FETCH_HEAD
+ )
+'
+
+test_expect_success 'fetch new submodule commits on-demand without .gitmodules entry' '
+ # depends on the previous test for setup
+
+ git config -f .gitmodules --remove-section submodule.sub1 &&
+ git add .gitmodules &&
+ git commit -m "delete gitmodules file" &&
+ git checkout -B master &&
+ git -C downstream fetch &&
+ git -C downstream checkout origin/master &&
+
+ C=$(git -C submodule commit-tree -m "yet another change outside refs/heads" HEAD^{tree}) &&
+ git -C submodule update-ref refs/changes/7 $C &&
+ git update-index --cacheinfo 160000 $C submodule &&
+ test_tick &&
+
+ D=$(git -C sub1 commit-tree -m "yet another change outside refs/heads" HEAD^{tree}) &&
+ git -C sub1 update-ref refs/changes/8 $D &&
+ git update-index --cacheinfo 160000 $D sub1 &&
+
+ git commit -m "updated submodules outside of refs/heads" &&
+ E=$(git rev-parse HEAD) &&
+ git update-ref refs/changes/9 $E &&
+ (
+ cd downstream &&
+ git fetch --recurse-submodules origin refs/changes/9 &&
+ git -C submodule cat-file -t $C &&
+ git -C sub1 cat-file -t $D &&
+ git checkout --recurse-submodules FETCH_HEAD
+ )
+'
+
+test_expect_success 'fetch new submodule commit intermittently referenced by superproject' '
+ # depends on the previous test for setup
+
+ D=$(git -C sub1 commit-tree -m "change 10 outside refs/heads" HEAD^{tree}) &&
+ E=$(git -C sub1 commit-tree -m "change 11 outside refs/heads" HEAD^{tree}) &&
+ F=$(git -C sub1 commit-tree -m "change 12 outside refs/heads" HEAD^{tree}) &&
+
+ git -C sub1 update-ref refs/changes/10 $D &&
+ git update-index --cacheinfo 160000 $D sub1 &&
+ git commit -m "updated submodules outside of refs/heads" &&
+
+ git -C sub1 update-ref refs/changes/11 $E &&
+ git update-index --cacheinfo 160000 $E sub1 &&
+ git commit -m "updated submodules outside of refs/heads" &&
+
+ git -C sub1 update-ref refs/changes/12 $F &&
+ git update-index --cacheinfo 160000 $F sub1 &&
+ git commit -m "updated submodules outside of refs/heads" &&
+
+ G=$(git rev-parse HEAD) &&
+ git update-ref refs/changes/13 $G &&
+ (
+ cd downstream &&
+ git fetch --recurse-submodules origin refs/changes/13 &&
+
+ git -C sub1 cat-file -t $D &&
+ git -C sub1 cat-file -t $E &&
+ git -C sub1 cat-file -t $F
+ )
+'
+
test_done