clone: add `--shallow-submodules` flag

diff --git a/t/t5526-fetch-submodules.sh b/t/t5526-fetch-submodules.sh
index a4532b00d6cbf791a6654b00742138728d4bf66d..954d0e43f52375b1ed86a4edb9d274714d3b596d 100755 (executable)
--- a/t/t5526-fetch-submodules.sh
+++ b/t/t5526-fetch-submodules.sh
@@ -16,7 +16,8 @@ add_upstream_commit() {
                git add subfile &&
                git commit -m new subfile &&
                head2=$(git rev-parse --short HEAD) &&
-               echo "From $pwd/submodule" > ../expect.err &&
+               echo "Fetching submodule submodule" > ../expect.err &&
+               echo "From $pwd/submodule" >> ../expect.err &&
                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err
        ) &&
        (
@@ -27,6 +28,7 @@ add_upstream_commit() {
                git add deepsubfile &&
                git commit -m new deepsubfile &&
                head2=$(git rev-parse --short HEAD) &&
+               echo "Fetching submodule submodule/subdir/deepsubmodule" >> ../expect.err
                echo "From $pwd/deepsubmodule" >> ../expect.err &&
                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err
        )
@@ -56,9 +58,7 @@ test_expect_success setup '
        (
                cd downstream &&
                git submodule update --init --recursive
-       ) &&
-       echo "Fetching submodule submodule" > expect.out &&
-       echo "Fetching submodule submodule/subdir/deepsubmodule" >> expect.out
+       )
 '
 
 test_expect_success "fetch --recurse-submodules recurses into submodules" '
@@ -67,10 +67,21 @@ test_expect_success "fetch --recurse-submodules recurses into submodules" '
                cd downstream &&
                git fetch --recurse-submodules >../actual.out 2>../actual.err
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
+test_expect_success "fetch --recurse-submodules -j2 has the same output behaviour" '
+       add_upstream_commit &&
+       (
+               cd downstream &&
+               GIT_TRACE=$(pwd)/../trace.out git fetch --recurse-submodules -j2 2>../actual.err
+       ) &&
+       test_must_be_empty actual.out &&
+       test_i18ncmp expect.err actual.err &&
+       grep "2 tasks" trace.out
+'
+
 test_expect_success "fetch alone only fetches superproject" '
        add_upstream_commit &&
        (
@@ -96,7 +107,7 @@ test_expect_success "using fetchRecurseSubmodules=true in .gitmodules recurses i
                git config -f .gitmodules submodule.submodule.fetchRecurseSubmodules true &&
                git fetch >../actual.out 2>../actual.err
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -127,7 +138,7 @@ test_expect_success "--recurse-submodules overrides fetchRecurseSubmodules setti
                git config --unset -f .gitmodules submodule.submodule.fetchRecurseSubmodules &&
                git config --unset submodule.submodule.fetchRecurseSubmodules
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -140,13 +151,22 @@ test_expect_success "--quiet propagates to submodules" '
        ! test -s actual.err
 '
 
+test_expect_success "--quiet propagates to parallel submodules" '
+       (
+               cd downstream &&
+               git fetch --recurse-submodules -j 2 --quiet  >../actual.out 2>../actual.err
+       ) &&
+       ! test -s actual.out &&
+       ! test -s actual.err
+'
+
 test_expect_success "--dry-run propagates to submodules" '
        add_upstream_commit &&
        (
                cd downstream &&
                git fetch --recurse-submodules --dry-run >../actual.out 2>../actual.err
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -155,7 +175,7 @@ test_expect_success "Without --dry-run propagates to submodules" '
                cd downstream &&
                git fetch --recurse-submodules >../actual.out 2>../actual.err
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -166,7 +186,7 @@ test_expect_success "recurseSubmodules=true propagates into submodules" '
                git config fetch.recurseSubmodules true
                git fetch >../actual.out 2>../actual.err
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -180,7 +200,7 @@ test_expect_success "--recurse-submodules overrides config in submodule" '
                ) &&
                git fetch --recurse-submodules >../actual.out 2>../actual.err
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -214,16 +234,15 @@ test_expect_success "Recursion stops when no new submodule commits are fetched"
        git add submodule &&
        git commit -m "new submodule" &&
        head2=$(git rev-parse --short HEAD) &&
-       echo "Fetching submodule submodule" > expect.out.sub &&
        echo "From $pwd/." > expect.err.sub &&
        echo "   $head1..$head2  master     -> origin/master" >>expect.err.sub &&
-       head -2 expect.err >> expect.err.sub &&
+       head -3 expect.err >> expect.err.sub &&
        (
                cd downstream &&
                git fetch >../actual.out 2>../actual.err
        ) &&
        test_i18ncmp expect.err.sub actual.err &&
-       test_i18ncmp expect.out.sub actual.out
+       test_must_be_empty actual.out
 '
 
 test_expect_success "Recursion doesn't happen when new superproject commits don't change any submodules" '
@@ -269,7 +288,7 @@ test_expect_success "Recursion picks up config in submodule" '
                )
        ) &&
        test_i18ncmp expect.err.sub actual.err &&
-       test_i18ncmp expect.out actual.out
+       test_must_be_empty actual.out
 '
 
 test_expect_success "Recursion picks up all submodules when necessary" '
@@ -285,7 +304,8 @@ test_expect_success "Recursion picks up all submodules when necessary" '
                git add subdir/deepsubmodule &&
                git commit -m "new deepsubmodule"
                head2=$(git rev-parse --short HEAD) &&
-               echo "From $pwd/submodule" > ../expect.err.sub &&
+               echo "Fetching submodule submodule" > ../expect.err.sub &&
+               echo "From $pwd/submodule" >> ../expect.err.sub &&
                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err.sub
        ) &&
        head1=$(git rev-parse --short HEAD) &&
@@ -295,13 +315,13 @@ test_expect_success "Recursion picks up all submodules when necessary" '
        echo "From $pwd/." > expect.err.2 &&
        echo "   $head1..$head2  master     -> origin/master" >> expect.err.2 &&
        cat expect.err.sub >> expect.err.2 &&
-       tail -2 expect.err >> expect.err.2 &&
+       tail -3 expect.err >> expect.err.2 &&
        (
                cd downstream &&
                git fetch >../actual.out 2>../actual.err
        ) &&
        test_i18ncmp expect.err.2 actual.err &&
-       test_i18ncmp expect.out actual.out
+       test_must_be_empty actual.out
 '
 
 test_expect_success "'--recurse-submodules=on-demand' doesn't recurse when no new commits are fetched in the superproject (and ignores config)" '
@@ -317,7 +337,8 @@ test_expect_success "'--recurse-submodules=on-demand' doesn't recurse when no ne
                git add subdir/deepsubmodule &&
                git commit -m "new deepsubmodule" &&
                head2=$(git rev-parse --short HEAD) &&
-               echo "From $pwd/submodule" > ../expect.err.sub &&
+               echo Fetching submodule submodule > ../expect.err.sub &&
+               echo "From $pwd/submodule" >> ../expect.err.sub &&
                echo "   $head1..$head2  master     -> origin/master" >> ../expect.err.sub
        ) &&
        (
@@ -335,7 +356,7 @@ test_expect_success "'--recurse-submodules=on-demand' recurses as deep as necess
        git add submodule &&
        git commit -m "new submodule" &&
        head2=$(git rev-parse --short HEAD) &&
-       tail -2 expect.err > expect.err.deepsub &&
+       tail -3 expect.err > expect.err.deepsub &&
        echo "From $pwd/." > expect.err &&
        echo "   $head1..$head2  master     -> origin/master" >>expect.err &&
        cat expect.err.sub >> expect.err &&
@@ -354,7 +375,7 @@ test_expect_success "'--recurse-submodules=on-demand' recurses as deep as necess
                        git config --unset -f .gitmodules submodule.subdir/deepsubmodule.fetchRecursive
                )
        ) &&
-       test_i18ncmp expect.out actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err actual.err
 '
 
@@ -388,7 +409,7 @@ test_expect_success "'fetch.recurseSubmodules=on-demand' overrides global config
        head2=$(git rev-parse --short HEAD) &&
        echo "From $pwd/." > expect.err.2 &&
        echo "   $head1..$head2  master     -> origin/master" >>expect.err.2 &&
-       head -2 expect.err >> expect.err.2 &&
+       head -3 expect.err >> expect.err.2 &&
        (
                cd downstream &&
                git config fetch.recurseSubmodules on-demand &&
@@ -399,7 +420,7 @@ test_expect_success "'fetch.recurseSubmodules=on-demand' overrides global config
                cd downstream &&
                git config --unset fetch.recurseSubmodules
        ) &&
-       test_i18ncmp expect.out.sub actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err.2 actual.err
 '
 
@@ -416,7 +437,7 @@ test_expect_success "'submodule.<sub>.fetchRecurseSubmodules=on-demand' override
        head2=$(git rev-parse --short HEAD) &&
        echo "From $pwd/." > expect.err.2 &&
        echo "   $head1..$head2  master     -> origin/master" >>expect.err.2 &&
-       head -2 expect.err >> expect.err.2 &&
+       head -3 expect.err >> expect.err.2 &&
        (
                cd downstream &&
                git config submodule.submodule.fetchRecurseSubmodules on-demand &&
@@ -427,7 +448,7 @@ test_expect_success "'submodule.<sub>.fetchRecurseSubmodules=on-demand' override
                cd downstream &&
                git config --unset submodule.submodule.fetchRecurseSubmodules
        ) &&
-       test_i18ncmp expect.out.sub actual.out &&
+       test_must_be_empty actual.out &&
        test_i18ncmp expect.err.2 actual.err
 '
 
@@ -450,4 +471,18 @@ test_expect_success "don't fetch submodule when newly recorded commits are alrea
        test_i18ncmp expect.err actual.err
 '
 
+test_expect_success 'fetching submodules respects parallel settings' '
+       git config fetch.recurseSubmodules true &&
+       (
+               cd downstream &&
+               GIT_TRACE=$(pwd)/trace.out git fetch --jobs 7 &&
+               grep "7 tasks" trace.out &&
+               git config submodule.fetchJobs 8 &&
+               GIT_TRACE=$(pwd)/trace.out git fetch &&
+               grep "8 tasks" trace.out &&
+               GIT_TRACE=$(pwd)/trace.out git fetch --jobs 9 &&
+               grep "9 tasks" trace.out
+       )
+'
+
 test_done