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#!/bin/sh
#
# Copyright (c) 2008 Johannes E. Schindelin
#

test_description='prune'
. ./test-lib.sh

day=$((60*60*24))
week=$(($day*7))

add_blob() {
	before=$(git count-objects | sed "s/ .*//") &&
	BLOB=$(echo aleph_0 | git hash-object -w --stdin) &&
	BLOB_FILE=.git/objects/$(echo $BLOB | sed "s/^../&\//") &&
	test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
	test -f $BLOB_FILE &&
	test-chmtime =+0 $BLOB_FILE
}

test_expect_success setup '

	: > file &&
	git add file &&
	test_tick &&
	git commit -m initial &&
	git gc

'

test_expect_success 'prune stale packs' '

	orig_pack=$(echo .git/objects/pack/*.pack) &&
	: > .git/objects/tmp_1.pack &&
	: > .git/objects/tmp_2.pack &&
	test-chmtime =-86501 .git/objects/tmp_1.pack &&
	git prune --expire 1.day &&
	test -f $orig_pack &&
	test -f .git/objects/tmp_2.pack &&
	! test -f .git/objects/tmp_1.pack

'

test_expect_success 'prune --expire' '

	add_blob &&
	git prune --expire=1.hour.ago &&
	test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
	test -f $BLOB_FILE &&
	test-chmtime =-86500 $BLOB_FILE &&
	git prune --expire 1.day &&
	test $before = $(git count-objects | sed "s/ .*//") &&
	! test -f $BLOB_FILE

'

test_expect_success 'gc: implicit prune --expire' '

	add_blob &&
	test-chmtime =-$((2*$week-30)) $BLOB_FILE &&
	git gc &&
	test $((1 + $before)) = $(git count-objects | sed "s/ .*//") &&
	test -f $BLOB_FILE &&
	test-chmtime =-$((2*$week+1)) $BLOB_FILE &&
	git gc &&
	test $before = $(git count-objects | sed "s/ .*//") &&
	! test -f $BLOB_FILE

'

test_expect_success 'gc: refuse to start with invalid gc.pruneExpire' '

	git config gc.pruneExpire invalid &&
	test_must_fail git gc

'

test_expect_success 'gc: start with ok gc.pruneExpire' '

	git config gc.pruneExpire 2.days.ago &&
	git gc

'

test_expect_success 'prune: prune nonsense parameters' '

	test_must_fail git prune garbage &&
	test_must_fail git prune --- &&
	test_must_fail git prune --no-such-option

'

test_expect_success 'prune: prune unreachable heads' '

	git config core.logAllRefUpdates false &&
	mv .git/logs .git/logs.old &&
	: > file2 &&
	git add file2 &&
	git commit -m temporary &&
	tmp_head=$(git rev-list -1 HEAD) &&
	git reset HEAD^ &&
	git prune &&
	test_must_fail git reset $tmp_head --

'

test_expect_success 'prune: do not prune heads listed as an argument' '

	: > file2 &&
	git add file2 &&
	git commit -m temporary &&
	tmp_head=$(git rev-list -1 HEAD) &&
	git reset HEAD^ &&
	git prune -- $tmp_head &&
	git reset $tmp_head --

'

test_expect_success 'gc --no-prune' '

	add_blob &&
	test-chmtime =-$((5001*$day)) $BLOB_FILE &&
	git config gc.pruneExpire 2.days.ago &&
	git gc --no-prune &&
	test 1 = $(git count-objects | sed "s/ .*//") &&
	test -f $BLOB_FILE

'

test_expect_success 'gc respects gc.pruneExpire' '

	git config gc.pruneExpire 5002.days.ago &&
	git gc &&
	test -f $BLOB_FILE &&
	git config gc.pruneExpire 5000.days.ago &&
	git gc &&
	test ! -f $BLOB_FILE

'

test_expect_success 'gc --prune=<date>' '

	add_blob &&
	test-chmtime =-$((5001*$day)) $BLOB_FILE &&
	git gc --prune=5002.days.ago &&
	test -f $BLOB_FILE &&
	git gc --prune=5000.days.ago &&
	test ! -f $BLOB_FILE

'

test_expect_success 'gc --prune=never' '

	add_blob &&
	git gc --prune=never &&
	test -f $BLOB_FILE &&
	git gc --prune=now &&
	test ! -f $BLOB_FILE

'

test_expect_success 'gc respects gc.pruneExpire=never' '

	git config gc.pruneExpire never &&
	add_blob &&
	git gc &&
	test -f $BLOB_FILE &&
	git config gc.pruneExpire now &&
	git gc &&
	test ! -f $BLOB_FILE

'

test_expect_success 'prune --expire=never' '

	add_blob &&
	git prune --expire=never &&
	test -f $BLOB_FILE &&
	git prune &&
	test ! -f $BLOB_FILE

'

test_expect_success 'gc: prune old objects after local clone' '
	add_blob &&
	test-chmtime =-$((2*$week+1)) $BLOB_FILE &&
	git clone --no-hardlinks . aclone &&
	(
		cd aclone &&
		test 1 = $(git count-objects | sed "s/ .*//") &&
		test -f $BLOB_FILE &&
		git gc --prune &&
		test 0 = $(git count-objects | sed "s/ .*//") &&
		! test -f $BLOB_FILE
	)
'

test_done