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path: root/t/t2011-checkout-invalid-head.sh
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#!/bin/sh
 
test_description='checkout switching away from an invalid branch'
 
. ./test-lib.sh
 
test_expect_success 'setup' '
	echo hello >world &&
	git add world &&
	git commit -m initial
'
 
test_expect_success 'checkout should not start branch from a tree' '
	test_must_fail git checkout -b newbranch master^{tree}
'
 
test_expect_success 'checkout master from invalid HEAD' '
	echo $ZERO_OID >.git/HEAD &&
	git checkout master --
'
 
test_expect_success 'checkout notices failure to lock HEAD' '
	test_when_finished "rm -f .git/HEAD.lock" &&
	>.git/HEAD.lock &&
	test_must_fail git checkout -b other
'
 
test_expect_success 'create ref directory/file conflict scenario' '
	git update-ref refs/heads/outer/inner master &&
 
	# do not rely on symbolic-ref to get a known state,
	# as it may use the same code we are testing
	reset_to_df () {
		echo "ref: refs/heads/outer" >.git/HEAD
	}
'
 
test_expect_success 'checkout away from d/f HEAD (unpacked, to branch)' '
	reset_to_df &&
	git checkout master
'
 
test_expect_success 'checkout away from d/f HEAD (unpacked, to detached)' '
	reset_to_df &&
	git checkout --detach master
'
 
test_expect_success 'pack refs' '
	git pack-refs --all --prune
'
 
test_expect_success 'checkout away from d/f HEAD (packed, to branch)' '
	reset_to_df &&
	git checkout master
'
 
test_expect_success 'checkout away from d/f HEAD (packed, to detached)' '
	reset_to_df &&
	git checkout --detach master
'
test_done