Merge branch 'mg/x-years-12-months' into maint

diff --git a/t/t5526-fetch-submodules.sh b/t/t5526-fetch-submodules.sh
index a5f458533fd071c13550a72bf251e2e10c109637..af78e21ba913b465e7bf2e4149549d32de9d4240 100755 (executable)
--- a/t/t5526-fetch-submodules.sh
+++ b/t/t5526-fetch-submodules.sh
@@ -66,7 +66,10 @@ test_expect_success "fetch --recurse-submodules recurses into submodules" '
        (
                cd downstream &&
                git fetch --recurse-submodules >../actual.out 2>../actual.err
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "fetch --recurse-submodules recurses into submodules: output" '
        test_cmp expect.out actual.out &&
        test_cmp expect.err actual.err
 '
@@ -95,7 +98,10 @@ test_expect_success "using fetchRecurseSubmodules=true in .gitmodules recurses i
                cd downstream &&
                git config -f .gitmodules submodule.submodule.fetchRecurseSubmodules true &&
                git fetch >../actual.out 2>../actual.err
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "using fetchRecurseSubmodules=true in .gitmodules recurses into submodules" '
        test_cmp expect.out actual.out &&
        test_cmp expect.err actual.err
 '
@@ -126,7 +132,10 @@ test_expect_success "--recurse-submodules overrides fetchRecurseSubmodules setti
                git fetch --recurse-submodules >../actual.out 2>../actual.err &&
                git config --unset -f .gitmodules submodule.submodule.fetchRecurseSubmodules &&
                git config --unset submodule.submodule.fetchRecurseSubmodules
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "--recurse-submodules overrides fetchRecurseSubmodules setting from .git/config: output" '
        test_cmp expect.out actual.out &&
        test_cmp expect.err actual.err
 '
@@ -145,13 +154,22 @@ test_expect_success "--dry-run propagates to submodules" '
        (
                cd downstream &&
                git fetch --recurse-submodules --dry-run >../actual.out 2>../actual.err
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "--dry-run propagates to submodules: output" '
        test_cmp expect.out actual.out &&
-       test_cmp expect.err actual.err &&
+       test_cmp expect.err actual.err
+'
+
+test_expect_success "Without --dry-run propagates to submodules" '
        (
                cd downstream &&
                git fetch --recurse-submodules >../actual.out 2>../actual.err
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "Without --dry-run propagates to submodules: output" '
        test_cmp expect.out actual.out &&
        test_cmp expect.err actual.err
 '
@@ -162,7 +180,10 @@ test_expect_success "recurseSubmodules=true propagates into submodules" '
                cd downstream &&
                git config fetch.recurseSubmodules true
                git fetch >../actual.out 2>../actual.err
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "recurseSubmodules=true propagates into submodules: output" '
        test_cmp expect.out actual.out &&
        test_cmp expect.err actual.err
 '
@@ -176,7 +197,10 @@ test_expect_success "--recurse-submodules overrides config in submodule" '
                        git config fetch.recurseSubmodules false
                ) &&
                git fetch --recurse-submodules >../actual.out 2>../actual.err
-       ) &&
+       )
+'
+
+test_expect_success C_LOCALE_OUTPUT "--recurse-submodules overrides config in submodule: output" '
        test_cmp expect.out actual.out &&
        test_cmp expect.err actual.err
 '
@@ -192,4 +216,259 @@ test_expect_success "--no-recurse-submodules overrides config setting" '
        ! test -s actual.err
 '
 
+test_expect_success "Recursion doesn't happen when no new commits are fetched in the superproject" '
+       (
+               cd downstream &&
+               (
+                       cd submodule &&
+                       git config --unset fetch.recurseSubmodules
+               ) &&
+               git config --unset fetch.recurseSubmodules
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       ! test -s actual.out &&
+       ! test -s actual.err
+'
+
+test_expect_success "Recursion stops when no new submodule commits are fetched" '
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "new submodule" &&
+       head2=$(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 &&
+       (
+               cd downstream &&
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       test_cmp expect.err.sub actual.err &&
+       test_cmp expect.out.sub actual.out
+'
+
+test_expect_success "Recursion doesn't happen when new superproject commits don't change any submodules" '
+       add_upstream_commit &&
+       head1=$(git rev-parse --short HEAD) &&
+       echo a > file &&
+       git add file &&
+       git commit -m "new file" &&
+       head2=$(git rev-parse --short HEAD) &&
+       echo "From $pwd/." > expect.err.file &&
+       echo "   $head1..$head2  master     -> origin/master" >> expect.err.file &&
+       (
+               cd downstream &&
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       ! test -s actual.out &&
+       test_cmp expect.err.file actual.err
+'
+
+test_expect_success "Recursion picks up config in submodule" '
+       (
+               cd downstream &&
+               git fetch --recurse-submodules &&
+               (
+                       cd submodule &&
+                       git config fetch.recurseSubmodules true
+               )
+       ) &&
+       add_upstream_commit &&
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "new submodule" &&
+       head2=$(git rev-parse --short HEAD) &&
+       echo "From $pwd/." > expect.err.sub &&
+       echo "   $head1..$head2  master     -> origin/master" >> expect.err.sub &&
+       cat expect.err >> expect.err.sub &&
+       (
+               cd downstream &&
+               git fetch >../actual.out 2>../actual.err &&
+               (
+                       cd submodule &&
+                       git config --unset fetch.recurseSubmodules
+               )
+       ) &&
+       test_cmp expect.err.sub actual.err &&
+       test_cmp expect.out actual.out
+'
+
+test_expect_success "Recursion picks up all submodules when necessary" '
+       add_upstream_commit &&
+       (
+               cd submodule &&
+               (
+                       cd deepsubmodule &&
+                       git fetch &&
+                       git checkout -q FETCH_HEAD
+               ) &&
+               head1=$(git rev-parse --short HEAD^) &&
+               git add deepsubmodule &&
+               git commit -m "new deepsubmodule"
+               head2=$(git rev-parse --short HEAD) &&
+               echo "From $pwd/submodule" > ../expect.err.sub &&
+               echo "   $head1..$head2  master     -> origin/master" >> ../expect.err.sub
+       ) &&
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "new submodule" &&
+       head2=$(git rev-parse --short HEAD) &&
+       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 &&
+       (
+               cd downstream &&
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       test_cmp expect.err.2 actual.err &&
+       test_cmp expect.out actual.out
+'
+
+test_expect_success "'--recurse-submodules=on-demand' doesn't recurse when no new commits are fetched in the superproject (and ignores config)" '
+       add_upstream_commit &&
+       (
+               cd submodule &&
+               (
+                       cd deepsubmodule &&
+                       git fetch &&
+                       git checkout -q FETCH_HEAD
+               ) &&
+               head1=$(git rev-parse --short HEAD^) &&
+               git add deepsubmodule &&
+               git commit -m "new deepsubmodule"
+               head2=$(git rev-parse --short HEAD) &&
+               echo "From $pwd/submodule" > ../expect.err.sub &&
+               echo "   $head1..$head2  master     -> origin/master" >> ../expect.err.sub
+       ) &&
+       (
+               cd downstream &&
+               git config fetch.recurseSubmodules true &&
+               git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
+               git config --unset fetch.recurseSubmodules
+       ) &&
+       ! test -s actual.out &&
+       ! test -s actual.err
+'
+
+test_expect_success "'--recurse-submodules=on-demand' recurses as deep as necessary (and ignores config)" '
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "new submodule" &&
+       head2=$(git rev-parse --short HEAD) &&
+       tail -2 expect.err > expect.err.deepsub &&
+       echo "From $pwd/." > expect.err &&
+       echo "   $head1..$head2  master     -> origin/master" >> expect.err
+       cat expect.err.sub >> expect.err &&
+       cat expect.err.deepsub >> expect.err &&
+       (
+               cd downstream &&
+               git config fetch.recurseSubmodules false &&
+               (
+                       cd submodule &&
+                       git config -f .gitmodules submodule.deepsubmodule.fetchRecursive false
+               ) &&
+               git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err &&
+               git config --unset fetch.recurseSubmodules
+               (
+                       cd submodule &&
+                       git config --unset -f .gitmodules submodule.deepsubmodule.fetchRecursive
+               )
+       ) &&
+       test_cmp expect.out actual.out &&
+       test_cmp expect.err actual.err
+'
+
+test_expect_success "'--recurse-submodules=on-demand' stops when no new submodule commits are found in the superproject (and ignores config)" '
+       add_upstream_commit &&
+       head1=$(git rev-parse --short HEAD) &&
+       echo a >> file &&
+       git add file &&
+       git commit -m "new file" &&
+       head2=$(git rev-parse --short HEAD) &&
+       echo "From $pwd/." > expect.err.file &&
+       echo "   $head1..$head2  master     -> origin/master" >> expect.err.file &&
+       (
+               cd downstream &&
+               git fetch --recurse-submodules=on-demand >../actual.out 2>../actual.err
+       ) &&
+       ! test -s actual.out &&
+       test_cmp expect.err.file actual.err
+'
+
+test_expect_success "'fetch.recurseSubmodules=on-demand' overrides global config" '
+       (
+               cd downstream &&
+               git fetch --recurse-submodules
+       ) &&
+       add_upstream_commit &&
+       git config --global fetch.recurseSubmodules false &&
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "new submodule" &&
+       head2=$(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 &&
+       (
+               cd downstream &&
+               git config fetch.recurseSubmodules on-demand &&
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       git config --global --unset fetch.recurseSubmodules &&
+       (
+               cd downstream &&
+               git config --unset fetch.recurseSubmodules
+       ) &&
+       test_cmp expect.out.sub actual.out &&
+       test_cmp expect.err.2 actual.err
+'
+
+test_expect_success "'submodule.<sub>.fetchRecurseSubmodules=on-demand' overrides fetch.recurseSubmodules" '
+       (
+               cd downstream &&
+               git fetch --recurse-submodules
+       ) &&
+       add_upstream_commit &&
+       git config fetch.recurseSubmodules false &&
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "new submodule" &&
+       head2=$(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 &&
+       (
+               cd downstream &&
+               git config submodule.submodule.fetchRecurseSubmodules on-demand &&
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       git config --unset fetch.recurseSubmodules &&
+       (
+               cd downstream &&
+               git config --unset submodule.submodule.fetchRecurseSubmodules
+       ) &&
+       test_cmp expect.out.sub actual.out &&
+       test_cmp expect.err.2 actual.err
+'
+
+test_expect_success "don't fetch submodule when newly recorded commits are already present" '
+       (
+               cd submodule &&
+               git checkout -q HEAD^^
+       ) &&
+       head1=$(git rev-parse --short HEAD) &&
+       git add submodule &&
+       git commit -m "submodule rewound" &&
+       head2=$(git rev-parse --short HEAD) &&
+       echo "From $pwd/." > expect.err &&
+       echo "   $head1..$head2  master     -> origin/master" >> expect.err &&
+       (
+               cd downstream &&
+               git fetch >../actual.out 2>../actual.err
+       ) &&
+       ! test -s actual.out &&
+       test_cmp expect.err actual.err
+'
+
 test_done