#!/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

# upsream 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