Re: [RFC PATCH v3 2/2] push: support pushing to a remote group

[Junio C Hamano <gitster@pobox.com>]

Usman Akinyemi <usmanakinyemi202@gmail.com> writes:

>  t/meson.build               |   1 +
>  t/t5566-push-group.sh       | 150 ++++++++++++++++++++++++++++++++++++
> ...
> diff --git a/t/t5566-push-group.sh b/t/t5566-push-group.sh
> new file mode 100755
> index 0000000000..b9962946c7
> --- /dev/null
> +++ b/t/t5566-push-group.sh
> @@ -0,0 +1,150 @@
> +#!/bin/sh
> +
> +test_description='push to remote group'
> +
> +. ./test-lib.sh
> +
> +test_expect_success 'setup' '
> +	for i in 1 2 3
> +	do
> +		git init --bare dest-$i.git &&
> +		git -C dest-$i.git symbolic-ref HEAD refs/heads/not-a-branch ||
> +		return 1
> +	done &&
> +	test_tick &&
> +	git commit --allow-empty -m "initial" &&
> +	git config set remote.remote-1.url "file://$(pwd)/dest-1.git" &&
> +	git config set remote.remote-1.fetch "+refs/heads/*:refs/remotes/remote-1/*" &&
> +	git config set remote.remote-2.url "file://$(pwd)/dest-2.git" &&
> +	git config set remote.remote-2.fetch "+refs/heads/*:refs/remotes/remote-2/*" &&
> +	git config set remote.remote-3.url "file://$(pwd)/dest-3.git" &&
> +	git config set remote.remote-3.fetch "+refs/heads/*:refs/remotes/remote-3/*" &&
> +	git config set remotes.all-remotes "remote-1 remote-2 remote-3"
> +'
> +
> +test_expect_success 'push to remote group updates all members correctly' '
> +	git push all-remotes HEAD:refs/heads/main &&
> +	git rev-parse HEAD >expect &&


These tests will break rather badly at Git 3.0 boundary, because the
default branch name will be 'main' beyond that point.

It can be visible in

    https://github.com/git/git/actions/runs/23667958553/job/68954593675

i.e., linux-breaking-changes job.

I think we can squash in a futureproof fix like this one to the
patch.

diff --git c/t/t5566-push-group.sh w/t/t5566-push-group.sh
index b9962946c7..32b8c82cea 100755
--- c/t/t5566-push-group.sh
+++ w/t/t5566-push-group.sh
@@ -2,6 +2,9 @@
 
 test_description='push to remote group'
 
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=default
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
 . ./test-lib.sh
 
 test_expect_success 'setup' '