1 files changed, 213 insertions, 0 deletions
diff --git a/third_party/git/t/t5528-push-default.sh b/third_party/git/t/t5528-push-default.sh
new file mode 100755
index 000000000000..4d1e0c363ea1
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+++ b/third_party/git/t/t5528-push-default.sh
@@ -0,0 +1,213 @@
+#!/bin/sh
+
+test_description='check various push.default settings'
+. ./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 (master 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.master.remote parent1 &&
+		test_config branch.master.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 master &&
+	test_config branch.master.remote parent1 &&
+	test_config branch.master.merge refs/heads/foo &&
+	test_commit two &&
+	test_push_success upstream foo
+'
+
+test_expect_success '"upstream" does not push on unconfigured remote' '
+	git checkout master &&
+	test_unconfig branch.master.remote &&
+	test_commit three &&
+	test_push_failure upstream
+'
+
+test_expect_success '"upstream" does not push on unconfigured branch' '
+	git checkout master &&
+	test_config branch.master.remote parent1 &&
+	test_unconfig branch.master.merge &&
+	test_commit four &&
+	test_push_failure upstream
+'
+
+test_expect_success '"upstream" does not push when remotes do not match' '
+	git checkout master &&
+	test_config branch.master.remote parent1 &&
+	test_config branch.master.merge refs/heads/foo &&
+	test_config push.default upstream &&
+	test_commit five &&
+	test_must_fail git push parent2
+'
+
+test_expect_success 'push from/to new branch with upstream, matching and simple' '
+	git checkout -b new-branch &&
+	test_push_failure simple &&
+	test_push_failure matching &&
+	test_push_failure upstream
+'
+
+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.master.remote repo1 &&
+	git checkout master &&
+	test_push_failure simple &&
+	test_push_failure upstream
+'
+
+test_expect_success 'push to existing branch, upstream configured with same name' '
+	test_config branch.master.remote repo1 &&
+	test_config branch.master.merge refs/heads/master &&
+	git checkout master &&
+	test_commit six &&
+	test_push_success upstream master &&
+	test_commit seven &&
+	test_push_success simple master
+'
+
+test_expect_success 'push to existing branch, upstream configured with different name' '
+	test_config branch.master.remote repo1 &&
+	test_config branch.master.merge refs/heads/other-name &&
+	git checkout master &&
+	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 master &&
+	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 'master', 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 'master' and 'foo' branches, while
+# the parent2 repository has only 'master' branch.
+#
+# test_pushdefault_workflow() arguments:
+# $1 = success or failure
+# $2 = push.default value
+# $3 = branch to check for actual output (master or foo)
+# $4 = [optional] switch to triangular workflow
+
+# update parent1's master (which is not our upstream)
+test_pushdefault_workflow success current master
+
+# 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 master
+
+# master and foo are updated
+test_pushdefault_workflow success matching master
+
+# master is updated
+test_pushdefault_workflow success current master 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 master triangular
+
+# master is updated (parent2 does not have foo)
+test_pushdefault_workflow success matching master 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.master.remote parent1 &&
+	test_config branch.master.merge refs/heads/master &&
+	test_config remote.pushdefault parent1 &&
+	test_commit default-master-master &&
+	test_push_success "" master
+'
+
+test_expect_success 'default behavior rejects non-simple push' '
+	test_config branch.master.remote parent1 &&
+	test_config branch.master.merge refs/heads/foo &&
+	test_config remote.pushdefault parent1 &&
+	test_commit default-master-foo &&
+	test_push_failure ""
+'
+
+test_expect_success 'default triangular behavior acts like "current"' '
+	test_config branch.master.remote parent1 &&
+	test_config branch.master.merge refs/heads/foo &&
+	test_config remote.pushdefault parent2 &&
+	test_commit default-triangular &&
+	test_push_success "" master repo2
+'
+
+test_done