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#!/bin/sh

test_description='multi-pack-indexes'
. ./test-lib.sh

midx_read_expect() {
	NUM_PACKS=$1
	cat >expect <<- EOF
	header: 4d494458 1 1 0 $NUM_PACKS
	object_dir: .
	EOF
	git midx read --object-dir=. >actual &&
	test_cmp expect actual
}

test_expect_success 'write midx with no packs' '
	git midx --object-dir=. write &&
	test_when_finished rm pack/multi-pack-index &&
	test_path_is_file pack/multi-pack-index &&
	midx_read_expect 0
'

test_expect_success 'create objects' '
	for i in `test_seq 1 5`
	do
		iii=$(printf '%03i' $i)
		test-tool genrandom "bar" 200 > wide_delta_$iii &&
		test-tool genrandom "baz $iii" 50 >> wide_delta_$iii &&
		test-tool genrandom "foo"$i 100 > deep_delta_$iii &&
		test-tool genrandom "foo"$(expr $i + 1) 100 >> deep_delta_$iii &&
		test-tool genrandom "foo"$(expr $i + 2) 100 >> deep_delta_$iii &&
		echo $iii >file_$iii &&
		test-tool genrandom "$iii" 8192 >>file_$iii &&
		git update-index --add file_$iii deep_delta_$iii wide_delta_$iii &&
		i=$(expr $i + 1) || return 1
	done &&
	{ echo 101 && test-tool genrandom 100 8192; } >file_101 &&
	git update-index --add file_101 &&
	tree=$(git write-tree) &&
	commit=$(git commit-tree $tree </dev/null) && {
	echo $tree &&
	git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
	} >obj-list &&
	git update-ref HEAD $commit
'

test_expect_success 'write midx with one v1 pack' '
	pack=$(git pack-objects --index-version=1 pack/test <obj-list) &&
	test_when_finished rm pack/test-$pack.pack pack/test-$pack.idx pack/multi-pack-index &&
	git midx --object-dir=. write &&
	midx_read_expect 1
'

test_expect_success 'write midx with one v2 pack' '
	pack=$(git pack-objects --index-version=2,0x40 pack/test <obj-list) &&
	test_when_finished rm pack/test-$pack.pack pack/test-$pack.idx &&
	git midx --object-dir=. write &&
	midx_read_expect 1
'

test_expect_success 'Add more objects' '
	for i in `test_seq 6 5`
	do
		iii=$(printf '%03i' $i)
		test-tool genrandom "bar" 200 > wide_delta_$iii &&
		test-tool genrandom "baz $iii" 50 >> wide_delta_$iii &&
		test-tool genrandom "foo"$i 100 > deep_delta_$iii &&
		test-tool genrandom "foo"$(expr $i + 1) 100 >> deep_delta_$iii &&
		test-tool genrandom "foo"$(expr $i + 2) 100 >> deep_delta_$iii &&
		echo $iii >file_$iii &&
		test-tool genrandom "$iii" 8192 >>file_$iii &&
		git update-index --add file_$iii deep_delta_$iii wide_delta_$iii &&
		i=$(expr $i + 1) || return 1
	done &&
	{ echo 101 && test-tool genrandom 100 8192; } >file_101 &&
	git update-index --add file_101 &&
	tree=$(git write-tree) &&
	commit=$(git commit-tree $tree -p HEAD</dev/null) && {
	echo $tree &&
	git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
	} >obj-list2 &&
	git update-ref HEAD $commit
'

test_expect_success 'write midx with two packs' '
	pack1=$(git pack-objects --index-version=1 pack/test-1 <obj-list) &&
	pack2=$(git pack-objects --index-version=1 pack/test-2 <obj-list2) &&
	git midx --object-dir=. write &&
	midx_read_expect 2
'

test_expect_success 'Add more packs' '
	for j in `test_seq 1 10`
	do
		iii=$(printf '%03i' $i)
		test-tool genrandom "bar" 200 > wide_delta_$iii &&
		test-tool genrandom "baz $iii" 50 >> wide_delta_$iii &&
		test-tool genrandom "foo"$i 100 > deep_delta_$iii &&
		test-tool genrandom "foo"$(expr $i + 1) 100 >> deep_delta_$iii &&
		test-tool genrandom "foo"$(expr $i + 2) 100 >> deep_delta_$iii &&
		echo $iii >file_$iii &&
		test-tool genrandom "$iii" 8192 >>file_$iii &&
		git update-index --add file_$iii deep_delta_$iii wide_delta_$iii &&
		{ echo 101 && test-tool genrandom 100 8192; } >file_101 &&
		git update-index --add file_101 &&
		tree=$(git write-tree) &&
		commit=$(git commit-tree $tree -p HEAD</dev/null) && {
		echo $tree &&
		git ls-tree $tree | sed -e "s/.* \\([0-9a-f]*\\)	.*/\\1/"
		} >obj-list &&
		git update-ref HEAD $commit &&
		git pack-objects --index-version=2 pack/test-pack <obj-list &&
		i=$(expr $i + 1) || return 1 &&
		j=$(expr $j + 1) || return 1
	done
'

test_expect_success 'write midx with twelve packs' '
	git midx --object-dir=. write &&
	midx_read_expect 12
'

test_done
debug log:

solving abe545c7c4 ...
found abe545c7c4 in https://public-inbox.org/git/20180607140338.32440-9-dstolee@microsoft.com/
found 2c25a69744 in https://public-inbox.org/git/20180607140338.32440-8-dstolee@microsoft.com/
found e78514d8e9 in https://public-inbox.org/git/20180607140338.32440-7-dstolee@microsoft.com/
found 80f9389837 in https://public-inbox.org/git/20180607140338.32440-6-dstolee@microsoft.com/
found a590137af7 in https://public-inbox.org/git/20180607140338.32440-5-dstolee@microsoft.com/

applying [1/5] https://public-inbox.org/git/20180607140338.32440-5-dstolee@microsoft.com/
diff --git a/t/t5319-midx.sh b/t/t5319-midx.sh
new file mode 100755
index 0000000000..a590137af7


applying [2/5] https://public-inbox.org/git/20180607140338.32440-6-dstolee@microsoft.com/
diff --git a/t/t5319-midx.sh b/t/t5319-midx.sh
index a590137af7..80f9389837 100755


applying [3/5] https://public-inbox.org/git/20180607140338.32440-7-dstolee@microsoft.com/
diff --git a/t/t5319-midx.sh b/t/t5319-midx.sh
index 80f9389837..e78514d8e9 100755


applying [4/5] https://public-inbox.org/git/20180607140338.32440-8-dstolee@microsoft.com/
diff --git a/t/t5319-midx.sh b/t/t5319-midx.sh
index e78514d8e9..2c25a69744 100755


applying [5/5] https://public-inbox.org/git/20180607140338.32440-9-dstolee@microsoft.com/
diff --git a/t/t5319-midx.sh b/t/t5319-midx.sh
index 2c25a69744..abe545c7c4 100755

Checking patch t/t5319-midx.sh...
Applied patch t/t5319-midx.sh cleanly.
Checking patch t/t5319-midx.sh...
Applied patch t/t5319-midx.sh cleanly.
Checking patch t/t5319-midx.sh...
Applied patch t/t5319-midx.sh cleanly.
Checking patch t/t5319-midx.sh...
Applied patch t/t5319-midx.sh cleanly.
Checking patch t/t5319-midx.sh...
Applied patch t/t5319-midx.sh cleanly.

index at:
100755 abe545c7c427345830a10367b4aa818bbc507a0c	t/t5319-midx.sh

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