#!/bin/sh

test_description='switch basic functionality'

GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

. ./test-lib.sh

test_expect_success 'setup' '
	test_commit first &&
	git branch first-branch &&
	test_commit second &&
	test_commit third &&
	git remote add origin nohost:/nopath &&
	git update-ref refs/remotes/origin/foo first-branch
'

test_expect_success 'switch branch no arguments' '
	test_must_fail git switch
'

test_expect_success 'switch branch' '
	git switch first-branch &&
	test_path_is_missing second.t
'

test_expect_success 'switch and detach' '
	test_when_finished git switch main &&
	test_must_fail git switch main^{commit} &&
	git switch --detach main^{commit} &&
	test_must_fail git symbolic-ref HEAD
'

test_expect_success 'switch and detach current branch' '
	test_when_finished git switch main &&
	git switch main &&
	git switch --detach &&
	test_must_fail git symbolic-ref HEAD
'

test_expect_success 'switch and create branch' '
	test_when_finished git switch main &&
	git switch -c temp main^ &&
	test_cmp_rev main^ refs/heads/temp &&
	echo refs/heads/temp >expected-branch &&
	git symbolic-ref HEAD >actual-branch &&
	test_cmp expected-branch actual-branch
'

test_expect_success 'force create branch from HEAD' '
	test_when_finished git switch main &&
	git switch --detach main &&
	test_must_fail git switch -c temp &&
	git switch -C temp &&
	test_cmp_rev main refs/heads/temp &&
	echo refs/heads/temp >expected-branch &&
	git symbolic-ref HEAD >actual-branch &&
	test_cmp expected-branch actual-branch
'

test_expect_success 'new orphan branch from empty' '
	test_when_finished git switch main &&
	test_must_fail git switch --orphan new-orphan HEAD &&
	git switch --orphan new-orphan &&
	test_commit orphan &&
	git cat-file commit refs/heads/new-orphan >commit &&
	! grep ^parent commit &&
	git ls-files >tracked-files &&
	echo orphan.t >expected &&
	test_cmp expected tracked-files
'

test_expect_success 'orphan branch works with --discard-changes' '
	test_when_finished git switch main &&
	echo foo >foo.txt &&
	git switch --discard-changes --orphan new-orphan2 &&
	git ls-files >tracked-files &&
	test_must_be_empty tracked-files
'

test_expect_success 'switching ignores file of same branch name' '
	test_when_finished git switch main &&
	: >first-branch &&
	git switch first-branch &&
	echo refs/heads/first-branch >expected &&
	git symbolic-ref HEAD >actual &&
	test_cmp expected actual
'

test_expect_success 'guess and create branch' '
	test_when_finished git switch main &&
	test_must_fail git switch --no-guess foo &&
	test_config checkout.guess false &&
	test_must_fail git switch foo &&
	test_config checkout.guess true &&
	git switch foo &&
	echo refs/heads/foo >expected &&
	git symbolic-ref HEAD >actual &&
	test_cmp expected actual
'

test_expect_success 'not switching when something is in progress' '
	test_when_finished rm -f .git/MERGE_HEAD &&
	# fake a merge-in-progress
	cp .git/HEAD .git/MERGE_HEAD &&
	test_must_fail git switch -d @^
'

test_done