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247 lines
8.3 KiB
247 lines
8.3 KiB
#!/bin/sh |
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# |
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# Copyright (c) 2005 Jon Seymour |
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# |
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test_description='Tests git-rev-list --bisect functionality' |
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. ./test-lib.sh |
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. ../t6000-lib.sh |
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bc_expr() |
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{ |
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bc <<EOF |
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scale=1 |
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define abs(x) { if (x>=0) { return x; } else { return -x; } } |
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define floor(x) { save=scale; scale=0; result=x/1; scale=save; return result; } |
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$* |
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EOF |
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} |
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# usage: test_bisection max-diff bisect-option head ^prune... |
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# |
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# e.g. test_bisection 1 --bisect l1 ^l0 |
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# |
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test_bisection_diff() |
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{ |
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_max_diff=$1 |
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_bisect_option=$2 |
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shift 2 |
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_bisection=$(git-rev-list $_bisect_option "$@") |
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_list_size=$(git-rev-list "$@" | wc -l) |
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_head=$1 |
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shift 1 |
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_bisection_size=$(git-rev-list $_bisection "$@" | wc -l) |
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[ -n "$_list_size" -a -n "$_bisection_size" ] || error "test_bisection_diff failed" |
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test_expect_success "bisection diff $_bisect_option $_head $* <= $_max_diff" "[ $(bc_expr "floor(abs($_list_size/2)-$_bisection_size)") -le $_max_diff ]" |
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} |
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date >path0 |
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git-update-cache --add path0 |
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save_tag tree git-write-tree |
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on_committer_date "1971-08-16 00:00:00" hide_error save_tag root unique_commit root tree |
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on_committer_date "1971-08-16 00:00:01" save_tag l0 unique_commit l0 tree -p root |
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on_committer_date "1971-08-16 00:00:02" save_tag l1 unique_commit l1 tree -p l0 |
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on_committer_date "1971-08-16 00:00:03" save_tag l2 unique_commit l2 tree -p l1 |
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on_committer_date "1971-08-16 00:00:04" save_tag a0 unique_commit a0 tree -p l2 |
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on_committer_date "1971-08-16 00:00:05" save_tag a1 unique_commit a1 tree -p a0 |
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on_committer_date "1971-08-16 00:00:06" save_tag b1 unique_commit b1 tree -p a0 |
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on_committer_date "1971-08-16 00:00:07" save_tag c1 unique_commit c1 tree -p b1 |
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on_committer_date "1971-08-16 00:00:08" save_tag b2 unique_commit b2 tree -p b1 |
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on_committer_date "1971-08-16 00:00:09" save_tag b3 unique_commit b2 tree -p b2 |
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on_committer_date "1971-08-16 00:00:10" save_tag c2 unique_commit c2 tree -p c1 -p b2 |
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on_committer_date "1971-08-16 00:00:11" save_tag c3 unique_commit c3 tree -p c2 |
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on_committer_date "1971-08-16 00:00:12" save_tag a2 unique_commit a2 tree -p a1 |
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on_committer_date "1971-08-16 00:00:13" save_tag a3 unique_commit a3 tree -p a2 |
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on_committer_date "1971-08-16 00:00:14" save_tag b4 unique_commit b4 tree -p b3 -p a3 |
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on_committer_date "1971-08-16 00:00:15" save_tag a4 unique_commit a4 tree -p a3 -p b4 -p c3 |
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on_committer_date "1971-08-16 00:00:16" save_tag l3 unique_commit l3 tree -p a4 |
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on_committer_date "1971-08-16 00:00:17" save_tag l4 unique_commit l4 tree -p l3 |
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on_committer_date "1971-08-16 00:00:18" save_tag l5 unique_commit l5 tree -p l4 |
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tag l5 > .git/HEAD |
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# E |
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# / \ |
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# e1 | |
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# | | |
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# e2 | |
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# | | |
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# e3 | |
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# | | |
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# e4 | |
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# | | |
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# | f1 |
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# | | |
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# | f2 |
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# | | |
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# | f3 |
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# | | |
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# | f4 |
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# | | |
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# e5 | |
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# | | |
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# e6 | |
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# | | |
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# e7 | |
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# | | |
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# e8 | |
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# \ / |
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# F |
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on_committer_date "1971-08-16 00:00:00" hide_error save_tag F unique_commit F tree |
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on_committer_date "1971-08-16 00:00:01" save_tag e8 unique_commit e8 tree -p F |
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on_committer_date "1971-08-16 00:00:02" save_tag e7 unique_commit e7 tree -p e8 |
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on_committer_date "1971-08-16 00:00:03" save_tag e6 unique_commit e6 tree -p e7 |
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on_committer_date "1971-08-16 00:00:04" save_tag e5 unique_commit e5 tree -p e6 |
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on_committer_date "1971-08-16 00:00:05" save_tag f4 unique_commit f4 tree -p F |
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on_committer_date "1971-08-16 00:00:06" save_tag f3 unique_commit f3 tree -p f4 |
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on_committer_date "1971-08-16 00:00:07" save_tag f2 unique_commit f2 tree -p f3 |
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on_committer_date "1971-08-16 00:00:08" save_tag f1 unique_commit f1 tree -p f2 |
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on_committer_date "1971-08-16 00:00:09" save_tag e4 unique_commit e4 tree -p e5 |
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on_committer_date "1971-08-16 00:00:10" save_tag e3 unique_commit e3 tree -p e4 |
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on_committer_date "1971-08-16 00:00:11" save_tag e2 unique_commit e2 tree -p e3 |
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on_committer_date "1971-08-16 00:00:12" save_tag e1 unique_commit e1 tree -p e2 |
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on_committer_date "1971-08-16 00:00:13" save_tag E unique_commit E tree -p e1 -p f1 |
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on_committer_date "1971-08-16 00:00:00" hide_error save_tag U unique_commit U tree |
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on_committer_date "1971-08-16 00:00:01" save_tag u0 unique_commit u0 tree -p U |
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on_committer_date "1971-08-16 00:00:01" save_tag u1 unique_commit u1 tree -p u0 |
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on_committer_date "1971-08-16 00:00:02" save_tag u2 unique_commit u2 tree -p u0 |
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on_committer_date "1971-08-16 00:00:03" save_tag u3 unique_commit u3 tree -p u0 |
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on_committer_date "1971-08-16 00:00:04" save_tag u4 unique_commit u4 tree -p u0 |
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on_committer_date "1971-08-16 00:00:05" save_tag u5 unique_commit u5 tree -p u0 |
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on_committer_date "1971-08-16 00:00:06" save_tag V unique_commit V tree -p u1 -p u2 -p u3 -p u4 -p u5 |
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# |
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# cd to t/trash and use |
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# |
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# git-rev-list ... 2>&1 | sed "$(cat sed.script)" |
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# |
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# if you ever want to manually debug the operation of git-rev-list |
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# |
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echo $sed_script > sed.script |
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test_sequence() |
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{ |
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_bisect_option=$1 |
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test_bisection_diff 0 $_bisect_option l0 ^root |
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test_bisection_diff 0 $_bisect_option l1 ^root |
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test_bisection_diff 0 $_bisect_option l2 ^root |
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test_bisection_diff 0 $_bisect_option a0 ^root |
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test_bisection_diff 0 $_bisect_option a1 ^root |
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test_bisection_diff 0 $_bisect_option a2 ^root |
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test_bisection_diff 0 $_bisect_option a3 ^root |
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test_bisection_diff 0 $_bisect_option b1 ^root |
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test_bisection_diff 0 $_bisect_option b2 ^root |
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test_bisection_diff 0 $_bisect_option b3 ^root |
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test_bisection_diff 0 $_bisect_option c1 ^root |
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test_bisection_diff 0 $_bisect_option c2 ^root |
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test_bisection_diff 0 $_bisect_option c3 ^root |
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test_bisection_diff 0 $_bisect_option E ^F |
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test_bisection_diff 0 $_bisect_option e1 ^F |
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test_bisection_diff 0 $_bisect_option e2 ^F |
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test_bisection_diff 0 $_bisect_option e3 ^F |
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test_bisection_diff 0 $_bisect_option e4 ^F |
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test_bisection_diff 0 $_bisect_option e5 ^F |
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test_bisection_diff 0 $_bisect_option e6 ^F |
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test_bisection_diff 0 $_bisect_option e7 ^F |
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test_bisection_diff 0 $_bisect_option f1 ^F |
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test_bisection_diff 0 $_bisect_option f2 ^F |
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test_bisection_diff 0 $_bisect_option f3 ^F |
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test_bisection_diff 0 $_bisect_option f4 ^F |
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test_bisection_diff 0 $_bisect_option E ^F |
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test_bisection_diff 1 $_bisect_option V ^U |
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test_bisection_diff 0 $_bisect_option V ^U ^u1 ^u2 ^u3 |
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test_bisection_diff 0 $_bisect_option u1 ^U |
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test_bisection_diff 0 $_bisect_option u2 ^U |
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test_bisection_diff 0 $_bisect_option u3 ^U |
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test_bisection_diff 0 $_bisect_option u4 ^U |
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test_bisection_diff 0 $_bisect_option u5 ^U |
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# |
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# the following illustrate's Linus' binary bug blatt idea. |
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# |
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# assume the bug is actually at l3, but you don't know that - all you know is that l3 is broken |
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# and it wasn't broken before |
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# |
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# keep bisecting the list, advancing the "bad" head and accumulating "good" heads until |
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# the bisection point is the head - this is the bad point. |
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# |
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test_output_expect_success "--bisect l5 ^root" 'git-rev-list $_bisect_option l5 ^root' <<EOF |
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c3 |
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EOF |
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test_output_expect_success "$_bisect_option l5 ^root ^c3" 'git-rev-list $_bisect_option l5 ^root ^c3' <<EOF |
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b4 |
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EOF |
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test_output_expect_success "$_bisect_option l5 ^root ^c3 ^b4" 'git-rev-list $_bisect_option l5 ^c3 ^b4' <<EOF |
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l3 |
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EOF |
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test_output_expect_success "$_bisect_option l3 ^root ^c3 ^b4" 'git-rev-list $_bisect_option l3 ^root ^c3 ^b4' <<EOF |
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a4 |
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EOF |
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test_output_expect_success "$_bisect_option l5 ^b3 ^a3 ^b4 ^a4" 'git-rev-list $_bisect_option l3 ^b3 ^a3 ^a4' <<EOF |
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l3 |
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EOF |
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# |
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# if l3 is bad, then l4 is bad too - so advance the bad pointer by making b4 the known bad head |
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# |
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test_output_expect_success "$_bisect_option l4 ^a2 ^a3 ^b ^a4" 'git-rev-list $_bisect_option l4 ^a2 ^a3 ^a4' <<EOF |
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l3 |
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EOF |
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test_output_expect_success "$_bisect_option l3 ^a2 ^a3 ^b ^a4" 'git-rev-list $_bisect_option l3 ^a2 ^a3 ^a4' <<EOF |
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l3 |
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EOF |
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# found! |
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# |
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# as another example, let's consider a4 to be the bad head, in which case |
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# |
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test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4" 'git-rev-list $_bisect_option a4 ^a2 ^a3 ^b4' <<EOF |
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c2 |
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EOF |
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test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4 ^c2" 'git-rev-list $_bisect_option a4 ^a2 ^a3 ^b4 ^c2' <<EOF |
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c3 |
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EOF |
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test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4 ^c2 ^c3" 'git-rev-list $_bisect_option a4 ^a2 ^a3 ^b4 ^c2 ^c3' <<EOF |
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a4 |
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EOF |
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# found! |
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# |
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# or consider c3 to be the bad head |
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# |
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test_output_expect_success "$_bisect_option a4 ^a2 ^a3 ^b4" 'git-rev-list $_bisect_option a4 ^a2 ^a3 ^b4' <<EOF |
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c2 |
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EOF |
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test_output_expect_success "$_bisect_option c3 ^a2 ^a3 ^b4 ^c2" 'git-rev-list $_bisect_option c3 ^a2 ^a3 ^b4 ^c2' <<EOF |
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c3 |
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EOF |
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# found! |
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} |
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test_sequence "--bisect" |
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# |
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# |
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test_done
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