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git/t/t5528-push-default.sh
Tao Klerks 05d57750c6 push: new config option "push.autoSetupRemote" supports "simple" push
In some "simple" centralized workflows, users expect remote tracking
branch names to match local branch names. "git push" pushes to the
remote version/instance of the branch, and "git pull" pulls any changes
to the remote branch (changes made by the same user in another place, or
by other users).

This expectation is supported by the push.default default option "simple"
which refuses a default push for a mismatching tracking branch name, and
by the new branch.autosetupmerge option, "simple", which only sets up
remote tracking for same-name remote branches.

When a new branch has been created by the user and has not yet been
pushed (and push.default is not set to "current"), the user is prompted
with a "The current branch %s has no upstream branch" error, and
instructions on how to push and add tracking.

This error is helpful in that following the advice once per branch
"resolves" the issue for that branch forever, but inconvenient in that
for the "simple" centralized workflow, this is always the right thing to
do, so it would be better to just do it.

Support this workflow with a new config setting, push.autoSetupRemote,
which will cause a default push, when there is no remote tracking branch
configured, to push to the same-name on the remote and --set-upstream.

Also add a hint offering this new option when the "The current branch %s
has no upstream branch" error is encountered, and add corresponding tests.

Signed-off-by: Tao Klerks <tao@klerks.biz>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2022-04-29 11:20:55 -07:00

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#!/bin/sh
test_description='check various push.default settings'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
test_expect_success 'setup bare remotes' '
git init --bare repo1 &&
git remote add parent1 repo1 &&
git init --bare repo2 &&
git remote add parent2 repo2 &&
test_commit one &&
git push parent1 HEAD &&
git push parent2 HEAD
'
# $1 = local revision
# $2 = remote revision (tested to be equal to the local one)
# $3 = [optional] repo to check for actual output (repo1 by default)
check_pushed_commit () {
git log -1 --format='%h %s' "$1" >expect &&
git --git-dir="${3:-repo1}" log -1 --format='%h %s' "$2" >actual &&
test_cmp expect actual
}
# $1 = push.default value
# $2 = expected target branch for the push
# $3 = [optional] repo to check for actual output (repo1 by default)
test_push_success () {
git ${1:+-c} ${1:+push.default="$1"} push &&
check_pushed_commit HEAD "$2" "$3"
}
# $1 = push.default value
# check that push fails and does not modify any remote branch
test_push_failure () {
git --git-dir=repo1 log --no-walk --format='%h %s' --all >expect &&
test_must_fail git ${1:+-c} ${1:+push.default="$1"} push &&
git --git-dir=repo1 log --no-walk --format='%h %s' --all >actual &&
test_cmp expect actual
}
# $1 = success or failure
# $2 = push.default value
# $3 = branch to check for actual output (main or foo)
# $4 = [optional] switch to triangular workflow
test_pushdefault_workflow () {
workflow=central
pushdefault=parent1
if test -n "${4-}"; then
workflow=triangular
pushdefault=parent2
fi
test_expect_success "push.default = $2 $1 in $workflow workflows" "
test_config branch.main.remote parent1 &&
test_config branch.main.merge refs/heads/foo &&
test_config remote.pushdefault $pushdefault &&
test_commit commit-for-$2${4+-triangular} &&
test_push_$1 $2 $3 ${4+repo2}
"
}
test_expect_success '"upstream" pushes to configured upstream' '
git checkout main &&
test_config branch.main.remote parent1 &&
test_config branch.main.merge refs/heads/foo &&
test_commit two &&
test_push_success upstream foo
'
test_expect_success '"upstream" does not push on unconfigured remote' '
git checkout main &&
test_unconfig branch.main.remote &&
test_commit three &&
test_push_failure upstream
'
test_expect_success '"upstream" does not push on unconfigured branch' '
git checkout main &&
test_config branch.main.remote parent1 &&
test_unconfig branch.main.merge &&
test_commit four &&
test_push_failure upstream
'
test_expect_success '"upstream" does not push when remotes do not match' '
git checkout main &&
test_config branch.main.remote parent1 &&
test_config branch.main.merge refs/heads/foo &&
test_config push.default upstream &&
test_commit five &&
test_must_fail git push parent2
'
test_expect_success '"current" does not push when multiple remotes and none origin' '
git checkout main &&
test_config push.default current &&
test_commit current-multi &&
test_must_fail git push
'
test_expect_success '"current" pushes when remote explicitly specified' '
git checkout main &&
test_config push.default current &&
test_commit current-specified &&
git push parent1
'
test_expect_success '"current" pushes to origin when no remote specified among multiple' '
git checkout main &&
test_config remote.origin.url repo1 &&
test_config remote.origin.fetch "+refs/heads/*:refs/remotes/origin/*" &&
test_commit current-origin &&
test_push_success current main
'
test_expect_success '"current" pushes to single remote even when not specified' '
git checkout main &&
test_when_finished git remote add parent1 repo1 &&
git remote remove parent1 &&
test_commit current-implied &&
test_push_success current main repo2
'
test_expect_success 'push from/to new branch with non-defaulted remote fails with upstream, matching, current and simple ' '
git checkout -b new-branch &&
test_push_failure simple &&
test_push_failure matching &&
test_push_failure upstream &&
test_push_failure current
'
test_expect_success 'push from/to new branch fails with upstream and simple ' '
git checkout -b new-branch-1 &&
test_config branch.new-branch-1.remote parent1 &&
test_push_failure simple &&
test_push_failure upstream
'
# The behavior here is surprising but not entirely wrong:
# - the current branch is used to determine the target remote
# - the "matching" push default pushes matching branches, *ignoring* the
# current new branch as it does not have upstream tracking
# - the default push succeeds
#
# A previous test expected this to fail, but for the wrong reasons:
# it expected a fail becaause the branch is new and cannot be pushed, but
# in fact it was failing because of an ambiguous remote
#
test_expect_failure 'push from/to new branch fails with matching ' '
git checkout -b new-branch-2 &&
test_config branch.new-branch-2.remote parent1 &&
test_push_failure matching
'
test_expect_success 'push from/to branch with tracking fails with nothing ' '
git checkout -b tracked-branch &&
test_config branch.tracked-branch.remote parent1 &&
test_config branch.tracked-branch.merge refs/heads/tracked-branch &&
test_push_failure nothing
'
test_expect_success 'push from/to new branch succeeds with upstream if push.autoSetupRemote' '
git checkout -b new-branch-a &&
test_config push.autoSetupRemote true &&
test_config branch.new-branch-a.remote parent1 &&
test_push_success upstream new-branch-a
'
test_expect_success 'push from/to new branch succeeds with simple if push.autoSetupRemote' '
git checkout -b new-branch-c &&
test_config push.autoSetupRemote true &&
test_config branch.new-branch-c.remote parent1 &&
test_push_success simple new-branch-c
'
test_expect_success '"matching" fails if none match' '
git init --bare empty &&
test_must_fail git push empty : 2>actual &&
test_i18ngrep "Perhaps you should specify a branch" actual
'
test_expect_success 'push ambiguously named branch with upstream, matching and simple' '
git checkout -b ambiguous &&
test_config branch.ambiguous.remote parent1 &&
test_config branch.ambiguous.merge refs/heads/ambiguous &&
git tag ambiguous &&
test_push_success simple ambiguous &&
test_push_success matching ambiguous &&
test_push_success upstream ambiguous
'
test_expect_success 'push from/to new branch with current creates remote branch' '
test_config branch.new-branch.remote repo1 &&
git checkout new-branch &&
test_push_success current new-branch
'
test_expect_success 'push to existing branch, with no upstream configured' '
test_config branch.main.remote repo1 &&
git checkout main &&
test_push_failure simple &&
test_push_failure upstream
'
test_expect_success 'push to existing branch, upstream configured with same name' '
test_config branch.main.remote repo1 &&
test_config branch.main.merge refs/heads/main &&
git checkout main &&
test_commit six &&
test_push_success upstream main &&
test_commit seven &&
test_push_success simple main
'
test_expect_success 'push to existing branch, upstream configured with different name' '
test_config branch.main.remote repo1 &&
test_config branch.main.merge refs/heads/other-name &&
git checkout main &&
test_commit eight &&
test_push_success upstream other-name &&
test_commit nine &&
test_push_failure simple &&
git --git-dir=repo1 log -1 --format="%h %s" "other-name" >expect-other-name &&
test_push_success current main &&
git --git-dir=repo1 log -1 --format="%h %s" "other-name" >actual-other-name &&
test_cmp expect-other-name actual-other-name
'
# We are on 'main', which integrates with 'foo' from parent1
# remote (set in test_pushdefault_workflow helper). Push to
# parent1 in centralized, and push to parent2 in triangular workflow.
# The parent1 repository has 'main' and 'foo' branches, while
# the parent2 repository has only 'main' branch.
#
# test_pushdefault_workflow() arguments:
# $1 = success or failure
# $2 = push.default value
# $3 = branch to check for actual output (main or foo)
# $4 = [optional] switch to triangular workflow
# update parent1's main (which is not our upstream)
test_pushdefault_workflow success current main
# update parent1's foo (which is our upstream)
test_pushdefault_workflow success upstream foo
# upstream is foo which is not the name of the current branch
test_pushdefault_workflow failure simple main
# main and foo are updated
test_pushdefault_workflow success matching main
# main is updated
test_pushdefault_workflow success current main triangular
# upstream mode cannot be used in triangular
test_pushdefault_workflow failure upstream foo triangular
# in triangular, 'simple' works as 'current' and update the branch
# with the same name.
test_pushdefault_workflow success simple main triangular
# main is updated (parent2 does not have foo)
test_pushdefault_workflow success matching main triangular
# default tests, when no push-default is specified. This
# should behave the same as "simple" in non-triangular
# settings, and as "current" otherwise.
test_expect_success 'default behavior allows "simple" push' '
test_config branch.main.remote parent1 &&
test_config branch.main.merge refs/heads/main &&
test_config remote.pushdefault parent1 &&
test_commit default-main-main &&
test_push_success "" main
'
test_expect_success 'default behavior rejects non-simple push' '
test_config branch.main.remote parent1 &&
test_config branch.main.merge refs/heads/foo &&
test_config remote.pushdefault parent1 &&
test_commit default-main-foo &&
test_push_failure ""
'
test_expect_success 'default triangular behavior acts like "current"' '
test_config branch.main.remote parent1 &&
test_config branch.main.merge refs/heads/foo &&
test_config remote.pushdefault parent2 &&
test_commit default-triangular &&
test_push_success "" main repo2
'
test_done