#!/bin/sh
#
# Copyright (c) 2007 Christian Couder
#
test_description='Tests git bisect functionality'
exec </dev/null
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
. ./test-lib.sh
add_line_into_file()
{
_line=$1
_file=$2
if [ -f "$_file" ]; then
echo "$_line" >> $_file || return $?
MSG="Add <$_line> into <$_file>."
else
echo "$_line" > $_file || return $?
git add $_file || return $?
MSG="Create file <$_file> with <$_line> inside."
fi
test_tick
git commit --quiet -m "$MSG" $_file
}
HASH1=
HASH2=
HASH3=
HASH4=
test_bisect_usage () {
local code="$1" &&
shift &&
cat >expect &&
test_expect_code $code "$@" >out 2>actual &&
test_must_be_empty out &&
test_cmp expect actual
}
test_expect_success 'bisect usage' "
test_bisect_usage 1 git bisect reset extra1 extra2 <<-\EOF &&
error: 'git bisect reset' requires either no argument or a commit
EOF
test_bisect_usage 1 git bisect terms extra1 extra2 <<-\EOF &&
error: 'git bisect terms' requires 0 or 1 argument
EOF
test_bisect_usage 1 git bisect next extra1 <<-\EOF &&
error: 'git bisect next' requires 0 arguments
EOF
test_bisect_usage 1 git bisect log extra1 <<-\EOF &&
error: We are not bisecting.
EOF
test_bisect_usage 1 git bisect replay <<-\EOF &&
error: no logfile given
EOF
test_bisect_usage 1 git bisect run <<-\EOF
error: 'git bisect run' failed: no command provided.
EOF
"
test_expect_success 'set up basic repo with 1 file (hello) and 4 commits' '
add_line_into_file "1: Hello World" hello &&
HASH1=$(git rev-parse --verify HEAD) &&
add_line_into_file "2: A new day for git" hello &&
HASH2=$(git rev-parse --verify HEAD) &&
add_line_into_file "3: Another new day for git" hello &&
HASH3=$(git rev-parse --verify HEAD) &&
add_line_into_file "4: Ciao for now" hello &&
HASH4=$(git rev-parse --verify HEAD)
'
test_expect_success 'bisect starts with only one bad' '
git bisect reset &&
git bisect start &&
git bisect bad $HASH4 &&
git bisect next
'
test_expect_success 'bisect does not start with only one good' '
git bisect reset &&
git bisect start &&
git bisect good $HASH1 &&
test_must_fail git bisect next
'
test_expect_success 'bisect start with one bad and good' '
git bisect reset &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect next
'
test_expect_success 'bisect fails if given any junk instead of revs' '
git bisect reset &&
test_must_fail git bisect start foo $HASH1 -- &&
test_must_fail git bisect start $HASH4 $HASH1 bar -- &&
test -z "$(git for-each-ref "refs/bisect/*")" &&
test -z "$(ls .git/BISECT_* 2>/dev/null)" &&
git bisect start &&
test_must_fail git bisect good foo $HASH1 &&
test_must_fail git bisect good $HASH1 bar &&
test_must_fail git bisect bad frotz &&
test_must_fail git bisect bad $HASH3 $HASH4 &&
test_must_fail git bisect skip bar $HASH3 &&
test_must_fail git bisect skip $HASH1 foo &&
test -z "$(git for-each-ref "refs/bisect/*")" &&
git bisect good $HASH1 &&
git bisect bad $HASH4
'
test_expect_success 'bisect start without -- takes unknown arg as pathspec' '
git bisect reset &&
git bisect start foo bar &&
grep foo ".git/BISECT_NAMES" &&
grep bar ".git/BISECT_NAMES"
'
test_expect_success 'bisect reset: back in a branch checked out also elsewhere' '
echo "shared" > branch.expect &&
test_bisect_reset() {
git -C $1 bisect start &&
git -C $1 bisect good $HASH1 &&
git -C $1 bisect bad $HASH3 &&
git -C $1 bisect reset &&
git -C $1 branch --show-current > branch.output &&
cmp branch.expect branch.output
} &&
test_when_finished "
git worktree remove wt1 &&
git worktree remove wt2 &&
git branch -d shared
" &&
git worktree add wt1 -b shared &&
git worktree add wt2 -f shared &&
# we test in both worktrees to ensure that works
# as expected with "first" and "next" worktrees
test_bisect_reset wt1 &&
test_bisect_reset wt2
'
test_expect_success 'bisect reset: back in the main branch' '
git bisect reset &&
echo "* main" > branch.expect &&
git branch > branch.output &&
cmp branch.expect branch.output
'
test_expect_success 'bisect reset: back in another branch' '
git checkout -b other &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH3 &&
git bisect reset &&
echo " main" > branch.expect &&
echo "* other" >> branch.expect &&
git branch > branch.output &&
cmp branch.expect branch.output
'
test_expect_success 'bisect reset when not bisecting' '
git bisect reset &&
git branch > branch.output &&
cmp branch.expect branch.output
'
test_expect_success 'bisect reset cleans up even when not bisecting' '
echo garbage >.git/BISECT_LOG &&
git bisect reset &&
test_path_is_missing .git/BISECT_LOG
'
test_expect_success 'bisect reset removes packed refs' '
git bisect reset &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH3 &&
git pack-refs --all --prune &&
git bisect next &&
git bisect reset &&
test -z "$(git for-each-ref "refs/bisect/*")" &&
test -z "$(git for-each-ref "refs/heads/bisect")"
'
test_expect_success 'bisect reset removes bisect state after --no-checkout' '
git bisect reset &&
git bisect start --no-checkout &&
git bisect good $HASH1 &&
git bisect bad $HASH3 &&
git bisect next &&
git bisect reset &&
test -z "$(git for-each-ref "refs/bisect/*")" &&
test -z "$(git for-each-ref "refs/heads/bisect")" &&
test -z "$(git for-each-ref "BISECT_HEAD")"
'
test_expect_success 'bisect start: back in good branch' '
git branch > branch.output &&
grep "* other" branch.output > /dev/null &&
git bisect start $HASH4 $HASH1 -- &&
git bisect good &&
git bisect start $HASH4 $HASH1 -- &&
git bisect bad &&
git bisect reset &&
git branch > branch.output &&
grep "* other" branch.output > /dev/null
'
test_expect_success 'bisect start: no ".git/BISECT_START" created if junk rev' '
git bisect reset &&
test_must_fail git bisect start $HASH4 foo -- &&
git branch > branch.output &&
grep "* other" branch.output > /dev/null &&
test_path_is_missing .git/BISECT_START
'
test_expect_success 'bisect start: existing ".git/BISECT_START" not modified if junk rev' '
git bisect start $HASH4 $HASH1 -- &&
git bisect good &&
cp .git/BISECT_START saved &&
test_must_fail git bisect start $HASH4 foo -- &&
git branch > branch.output &&
test_grep "* (no branch, bisect started on other)" branch.output > /dev/null &&
test_cmp saved .git/BISECT_START
'
test_expect_success 'bisect start: no ".git/BISECT_START" if mistaken rev' '
git bisect start $HASH4 $HASH1 -- &&
git bisect good &&
test_must_fail git bisect start $HASH1 $HASH4 -- &&
git branch > branch.output &&
grep "* other" branch.output > /dev/null &&
test_path_is_missing .git/BISECT_START
'
test_expect_success 'bisect start: no ".git/BISECT_START" if checkout error' '
echo "temp stuff" > hello &&
test_must_fail git bisect start $HASH4 $HASH1 -- &&
git branch &&
git branch > branch.output &&
grep "* other" branch.output > /dev/null &&
test_path_is_missing .git/BISECT_START &&
test -z "$(git for-each-ref "refs/bisect/*")" &&
git checkout HEAD hello
'
# $HASH1 is good, $HASH4 is bad, we skip $HASH3
# but $HASH2 is bad,
# so we should find $HASH2 as the first bad commit
test_expect_success 'bisect skip: successful result' '
test_when_finished git bisect reset &&
git bisect reset &&
git bisect start $HASH4 $HASH1 &&
git bisect skip &&
git bisect bad > my_bisect_log.txt &&
grep "$HASH2 is the first bad commit" my_bisect_log.txt
'
# $HASH1 is good, $HASH4 is bad, we skip $HASH3 and $HASH2
# so we should not be able to tell the first bad commit
# among $HASH2, $HASH3 and $HASH4
test_expect_success 'bisect skip: cannot tell between 3 commits' '
test_when_finished git bisect reset &&
git bisect start $HASH4 $HASH1 &&
git bisect skip &&
test_expect_code 2 git bisect skip >my_bisect_log.txt &&
grep "first bad commit could be any of" my_bisect_log.txt &&
! grep $HASH1 my_bisect_log.txt &&
grep $HASH2 my_bisect_log.txt &&
grep $HASH3 my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt
'
# $HASH1 is good, $HASH4 is bad, we skip $HASH3
# but $HASH2 is good,
# so we should not be able to tell the first bad commit
# among $HASH3 and $HASH4
test_expect_success 'bisect skip: cannot tell between 2 commits' '
test_when_finished git bisect reset &&
git bisect start $HASH4 $HASH1 &&
git bisect skip &&
test_expect_code 2 git bisect good >my_bisect_log.txt &&
grep "first bad commit could be any of" my_bisect_log.txt &&
! grep $HASH1 my_bisect_log.txt &&
! grep $HASH2 my_bisect_log.txt &&
grep $HASH3 my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt
'
# $HASH1 is good, $HASH4 is both skipped and bad, we skip $HASH3
# and $HASH2 is good,
# so we should not be able to tell the first bad commit
# among $HASH3 and $HASH4
test_expect_success 'bisect skip: with commit both bad and skipped' '
test_when_finished git bisect reset &&
git bisect start &&
git bisect skip &&
git bisect bad &&
git bisect good $HASH1 &&
git bisect skip &&
test_expect_code 2 git bisect good >my_bisect_log.txt &&
grep "first bad commit could be any of" my_bisect_log.txt &&
! grep $HASH1 my_bisect_log.txt &&
! grep $HASH2 my_bisect_log.txt &&
grep $HASH3 my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt
'
test_bisect_run_args () {
test_when_finished "rm -f run.sh actual" &&
>actual &&
cat >expect.args &&
cat <&6 >expect.out &&
cat <&7 >expect.err &&
write_script run.sh <<-\EOF &&
while test $# != 0
do
echo "<$1>" &&
shift
done >actual.args
EOF
test_when_finished "git bisect reset" &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run ./run.sh $@ >actual.out.raw 2>actual.err &&
# Prune just the log output
sed -n \
-e '/^Author:/d' \
-e '/^Date:/d' \
-e '/^$/d' \
-e '/^commit /d' \
-e '/^ /d' \
-e 'p' \
<actual.out.raw >actual.out &&
test_cmp expect.out actual.out &&
test_cmp expect.err actual.err &&
test_cmp expect.args actual.args
}
test_expect_success 'git bisect run: args, stdout and stderr with no arguments' "
test_bisect_run_args <<-'EOF_ARGS' 6<<-EOF_OUT 7<<-'EOF_ERR'
EOF_ARGS
running './run.sh'
$HASH4 is the first bad commit
bisect found first bad commit
EOF_OUT
EOF_ERR
"
test_expect_success 'git bisect run: args, stdout and stderr: "--" argument' "
test_bisect_run_args -- <<-'EOF_ARGS' 6<<-EOF_OUT 7<<-'EOF_ERR'
<-->
EOF_ARGS
running './run.sh' '--'
$HASH4 is the first bad commit
bisect found first bad commit
EOF_OUT
EOF_ERR
"
test_expect_success 'git bisect run: args, stdout and stderr: "--log foo --no-log bar" arguments' "
test_bisect_run_args --log foo --no-log bar <<-'EOF_ARGS' 6<<-EOF_OUT 7<<-'EOF_ERR'
<--log>
<foo>
<--no-log>
<bar>
EOF_ARGS
running './run.sh' '--log' 'foo' '--no-log' 'bar'
$HASH4 is the first bad commit
bisect found first bad commit
EOF_OUT
EOF_ERR
"
test_expect_success 'git bisect run: args, stdout and stderr: "--bisect-start" argument' "
test_bisect_run_args --bisect-start <<-'EOF_ARGS' 6<<-EOF_OUT 7<<-'EOF_ERR'
<--bisect-start>
EOF_ARGS
running './run.sh' '--bisect-start'
$HASH4 is the first bad commit
bisect found first bad commit
EOF_OUT
EOF_ERR
"
test_expect_success 'git bisect run: negative exit code' "
write_script fail.sh <<-'EOF' &&
exit 255
EOF
cat <<-'EOF' >expect &&
bisect run failed: exit code -1 from './fail.sh' is < 0 or >= 128
EOF
test_when_finished 'git bisect reset' &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
! git bisect run ./fail.sh 2>err &&
sed -En 's/.*(bisect.*code) (-?[0-9]+) (from.*)/\1 -1 \3/p' err >actual &&
test_cmp expect actual
"
test_expect_success 'git bisect run: unable to verify on good' "
write_script fail.sh <<-'EOF' &&
head=\$(git rev-parse --verify HEAD)
good=\$(git rev-parse --verify $HASH1)
if test "\$head" = "\$good"
then
exit 255
else
exit 127
fi
EOF
cat <<-'EOF' >expect &&
unable to verify './fail.sh' on good revision
EOF
test_when_finished 'git bisect reset' &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
! git bisect run ./fail.sh 2>err &&
sed -n 's/.*\(unable to verify.*\)/\1/p' err >actual &&
test_cmp expect actual
"
# We want to automatically find the commit that
# added "Another" into hello.
test_expect_success '"git bisect run" simple case' '
write_script test_script.sh <<-\EOF &&
! grep Another hello >/dev/null
EOF
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "$HASH3 is the first bad commit" my_bisect_log.txt &&
git bisect reset
'
# We want to make sure no arguments has been eaten
test_expect_success '"git bisect run" simple case' '
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run printf "%s %s\n" reset --bisect-skip >my_bisect_log.txt &&
grep -e "reset --bisect-skip" my_bisect_log.txt &&
git bisect reset
'
# We want to automatically find the commit that
# added "Ciao" into hello.
test_expect_success '"git bisect run" with more complex "git bisect start"' '
write_script test_script.sh <<-\EOF &&
! grep Ciao hello >/dev/null
EOF
git bisect start $HASH4 $HASH1 &&
git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "$HASH4 is the first bad commit" my_bisect_log.txt &&
git bisect reset
'
test_expect_success 'bisect run accepts exit code 126 as bad' '
test_when_finished "git bisect reset" &&
write_script test_script.sh <<-\EOF &&
! grep Another hello || exit 126 >/dev/null
EOF
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "$HASH3 is the first bad commit" my_bisect_log.txt
'
test_expect_success POSIXPERM 'bisect run fails with non-executable test script' '
test_when_finished "git bisect reset" &&
>not-executable.sh &&
chmod -x not-executable.sh &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
test_must_fail git bisect run ./not-executable.sh >my_bisect_log.txt &&
! grep "is the first bad commit" my_bisect_log.txt
'
test_expect_success 'bisect run accepts exit code 127 as bad' '
test_when_finished "git bisect reset" &&
write_script test_script.sh <<-\EOF &&
! grep Another hello || exit 127 >/dev/null
EOF
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "$HASH3 is the first bad commit" my_bisect_log.txt
'
test_expect_success 'bisect run fails with missing test script' '
test_when_finished "git bisect reset" &&
rm -f does-not-exist.sh &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
test_must_fail git bisect run ./does-not-exist.sh >my_bisect_log.txt &&
! grep "is the first bad commit" my_bisect_log.txt
'
# $HASH1 is good, $HASH5 is bad, we skip $HASH3
# but $HASH4 is good,
# so we should find $HASH5 as the first bad commit
HASH5=
test_expect_success 'bisect skip: add line and then a new test' '
add_line_into_file "5: Another new line." hello &&
HASH5=$(git rev-parse --verify HEAD) &&
git bisect start $HASH5 $HASH1 &&
git bisect skip &&
git bisect good > my_bisect_log.txt &&
grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
git bisect log > log_to_replay.txt &&
git bisect reset
'
test_expect_success 'bisect skip and bisect replay' '
git bisect replay log_to_replay.txt > my_bisect_log.txt &&
grep "$HASH5 is the first bad commit" my_bisect_log.txt &&
git bisect reset
'
HASH6=
test_expect_success 'bisect run & skip: cannot tell between 2' '
add_line_into_file "6: Yet a line." hello &&
HASH6=$(git rev-parse --verify HEAD) &&
write_script test_script.sh <<-\EOF &&
sed -ne \$p hello | grep Ciao >/dev/null && exit 125
! grep line hello >/dev/null
EOF
git bisect start $HASH6 $HASH1 &&
test_expect_code 2 git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "first bad commit could be any of" my_bisect_log.txt &&
! grep $HASH3 my_bisect_log.txt &&
! grep $HASH6 my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt &&
grep $HASH5 my_bisect_log.txt
'
HASH7=
test_expect_success 'bisect run & skip: find first bad' '
git bisect reset &&
add_line_into_file "7: Should be the last line." hello &&
HASH7=$(git rev-parse --verify HEAD) &&
write_script test_script.sh <<-\EOF &&
sed -ne \$p hello | grep Ciao >/dev/null && exit 125
sed -ne \$p hello | grep day >/dev/null && exit 125
! grep Yet hello >/dev/null
EOF
git bisect start $HASH7 $HASH1 &&
git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "$HASH6 is the first bad commit" my_bisect_log.txt
'
test_expect_success 'bisect skip only one range' '
git bisect reset &&
git bisect start $HASH7 $HASH1 &&
git bisect skip $HASH1..$HASH5 &&
test "$HASH6" = "$(git rev-parse --verify HEAD)" &&
test_must_fail git bisect bad > my_bisect_log.txt &&
grep "first bad commit could be any of" my_bisect_log.txt
'
test_expect_success 'bisect skip many ranges' '
git bisect start $HASH7 $HASH1 &&
test "$HASH4" = "$(git rev-parse --verify HEAD)" &&
git bisect skip $HASH2 $HASH2.. ..$HASH5 &&
test "$HASH6" = "$(git rev-parse --verify HEAD)" &&
test_must_fail git bisect bad > my_bisect_log.txt &&
grep "first bad commit could be any of" my_bisect_log.txt
'
test_expect_success 'bisect starting with a detached HEAD' '
git bisect reset &&
git checkout main^ &&
HEAD=$(git rev-parse --verify HEAD) &&
git bisect start &&
test $HEAD = $(cat .git/BISECT_START) &&
git bisect reset &&
test $HEAD = $(git rev-parse --verify HEAD)
'
test_expect_success 'bisect errors out if bad and good are mistaken' '
git bisect reset &&
test_must_fail git bisect start $HASH2 $HASH4 2> rev_list_error &&
test_grep "mistook good and bad" rev_list_error &&
git bisect reset
'
test_expect_success 'bisect does not create a "bisect" branch' '
git bisect reset &&
git bisect start $HASH7 $HASH1 &&
git branch bisect &&
rev_hash4=$(git rev-parse --verify HEAD) &&
test "$rev_hash4" = "$HASH4" &&
git branch -D bisect &&
git bisect good &&
git branch bisect &&
rev_hash6=$(git rev-parse --verify HEAD) &&
test "$rev_hash6" = "$HASH6" &&
git bisect good > my_bisect_log.txt &&
grep "$HASH7 is the first bad commit" my_bisect_log.txt &&
git bisect reset &&
rev_hash6=$(git rev-parse --verify bisect) &&
test "$rev_hash6" = "$HASH6" &&
git branch -D bisect
'
# This creates a "side" branch to test "siblings" cases.
#
# H1-H2-H3-H4-H5-H6-H7 <--other
# \
# S5-S6-S7 <--side
#
test_expect_success 'side branch creation' '
git bisect reset &&
git checkout -b side $HASH4 &&
add_line_into_file "5(side): first line on a side branch" hello2 &&
SIDE_HASH5=$(git rev-parse --verify HEAD) &&
add_line_into_file "6(side): second line on a side branch" hello2 &&
SIDE_HASH6=$(git rev-parse --verify HEAD) &&
add_line_into_file "7(side): third line on a side branch" hello2 &&
SIDE_HASH7=$(git rev-parse --verify HEAD)
'
test_expect_success 'good merge base when good and bad are siblings' '
git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
test_grep "merge base must be tested" my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt &&
git bisect good > my_bisect_log.txt &&
! grep "merge base must be tested" my_bisect_log.txt &&
grep $HASH6 my_bisect_log.txt &&
git bisect reset
'
test_expect_success 'skipped merge base when good and bad are siblings' '
git bisect start "$SIDE_HASH7" "$HASH7" > my_bisect_log.txt &&
test_grep "merge base must be tested" my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt &&
git bisect skip > my_bisect_log.txt 2>&1 &&
grep "warning" my_bisect_log.txt &&
grep $SIDE_HASH6 my_bisect_log.txt &&
git bisect reset
'
test_expect_success 'bad merge base when good and bad are siblings' '
git bisect start "$HASH7" HEAD > my_bisect_log.txt &&
test_grep "merge base must be tested" my_bisect_log.txt &&
grep $HASH4 my_bisect_log.txt &&
test_must_fail git bisect bad > my_bisect_log.txt 2>&1 &&
test_grep "merge base $HASH4 is bad" my_bisect_log.txt &&
test_grep "fixed between $HASH4 and \[$SIDE_HASH7\]" my_bisect_log.txt &&
git bisect reset
'
# This creates a few more commits (A and B) to test "siblings" cases
# when a good and a bad rev have many merge bases.
#
# We should have the following:
#
# H1-H2-H3-H4-H5-H6-H7
# \ \ \
# S5-A \
# \ \
# S6-S7----B
#
# And there A and B have 2 merge bases (S5 and H5) that should be
# reported by "git merge-base --all A B".
#
test_expect_success 'many merge bases creation' '
git checkout "$SIDE_HASH5" &&
git merge -m "merge HASH5 and SIDE_HASH5" "$HASH5" &&
A_HASH=$(git rev-parse --verify HEAD) &&
git checkout side &&
git merge -m "merge HASH7 and SIDE_HASH7" "$HASH7" &&
B_HASH=$(git rev-parse --verify HEAD) &&
git merge-base --all "$A_HASH" "$B_HASH" > merge_bases.txt &&
test_line_count = 2 merge_bases.txt &&
grep "$HASH5" merge_bases.txt &&
grep "$SIDE_HASH5" merge_bases.txt
'
# We want to automatically find the merge that
# added "line" into hello.
test_expect_success '"git bisect run --first-parent" simple case' '
git rev-list --first-parent $B_HASH ^$HASH4 >first_parent_chain.txt &&
write_script test_script.sh <<-\EOF &&
grep $(git rev-parse HEAD) first_parent_chain.txt || exit -1
! grep line hello >/dev/null
EOF
git bisect start --first-parent &&
test_path_is_file ".git/BISECT_FIRST_PARENT" &&
git bisect good $HASH4 &&
git bisect bad $B_HASH &&
git bisect run ./test_script.sh >my_bisect_log.txt &&
grep "$B_HASH is the first bad commit" my_bisect_log.txt &&
git bisect reset &&
test_path_is_missing .git/BISECT_FIRST_PARENT
'
test_expect_success 'good merge bases when good and bad are siblings' '
git bisect start "$B_HASH" "$A_HASH" > my_bisect_log.txt &&
test_grep "merge base must be tested" my_bisect_log.txt &&
git bisect good > my_bisect_log2.txt &&
test_grep "merge base must be tested" my_bisect_log2.txt &&
{
{
grep "$SIDE_HASH5" my_bisect_log.txt &&
grep "$HASH5" my_bisect_log2.txt
} || {
grep "$SIDE_HASH5" my_bisect_log2.txt &&
grep "$HASH5" my_bisect_log.txt
}
} &&
git bisect reset
'
test_expect_success 'optimized merge base checks' '
git bisect start "$HASH7" "$SIDE_HASH7" > my_bisect_log.txt &&
test_grep "merge base must be tested" my_bisect_log.txt &&
grep "$HASH4" my_bisect_log.txt &&
git bisect good > my_bisect_log2.txt &&
test -f ".git/BISECT_ANCESTORS_OK" &&
test "$HASH6" = $(git rev-parse --verify HEAD) &&
git bisect bad &&
git bisect good "$A_HASH" > my_bisect_log4.txt &&
test_grep "merge base must be tested" my_bisect_log4.txt &&
test_path_is_missing ".git/BISECT_ANCESTORS_OK"
'
# This creates another side branch called "parallel" with some files
# in some directories, to test bisecting with paths.
#
# We should have the following:
#
# P1-P2-P3-P4-P5-P6-P7
# / / /
# H1-H2-H3-H4-H5-H6-H7
# \ \ \
# S5-A \
# \ \
# S6-S7----B
#
test_expect_success '"parallel" side branch creation' '
git bisect reset &&
git checkout -b parallel $HASH1 &&
mkdir dir1 dir2 &&
add_line_into_file "1(para): line 1 on parallel branch" dir1/file1 &&
PARA_HASH1=$(git rev-parse --verify HEAD) &&
add_line_into_file "2(para): line 2 on parallel branch" dir2/file2 &&
PARA_HASH2=$(git rev-parse --verify HEAD) &&
add_line_into_file "3(para): line 3 on parallel branch" dir2/file3 &&
PARA_HASH3=$(git rev-parse --verify HEAD) &&
git merge -m "merge HASH4 and PARA_HASH3" "$HASH4" &&
PARA_HASH4=$(git rev-parse --verify HEAD) &&
add_line_into_file "5(para): add line on parallel branch" dir1/file1 &&
PARA_HASH5=$(git rev-parse --verify HEAD) &&
add_line_into_file "6(para): add line on parallel branch" dir2/file2 &&
PARA_HASH6=$(git rev-parse --verify HEAD) &&
git merge -m "merge HASH7 and PARA_HASH6" "$HASH7" &&
PARA_HASH7=$(git rev-parse --verify HEAD)
'
test_expect_success 'restricting bisection on one dir' '
git bisect reset &&
git bisect start HEAD $HASH1 -- dir1 &&
para1=$(git rev-parse --verify HEAD) &&
test "$para1" = "$PARA_HASH1" &&
git bisect bad > my_bisect_log.txt &&
grep "$PARA_HASH1 is the first bad commit" my_bisect_log.txt
'
test_expect_success 'restricting bisection on one dir and a file' '
git bisect reset &&
git bisect start HEAD $HASH1 -- dir1 hello &&
para4=$(git rev-parse --verify HEAD) &&
test "$para4" = "$PARA_HASH4" &&
git bisect bad &&
hash3=$(git rev-parse --verify HEAD) &&
test "$hash3" = "$HASH3" &&
git bisect good &&
hash4=$(git rev-parse --verify HEAD) &&
test "$hash4" = "$HASH4" &&
git bisect good &&
para1=$(git rev-parse --verify HEAD) &&
test "$para1" = "$PARA_HASH1" &&
git bisect good > my_bisect_log.txt &&
grep "$PARA_HASH4 is the first bad commit" my_bisect_log.txt
'
test_expect_success 'skipping away from skipped commit' '
git bisect start $PARA_HASH7 $HASH1 &&
para4=$(git rev-parse --verify HEAD) &&
test "$para4" = "$PARA_HASH4" &&
git bisect skip &&
hash7=$(git rev-parse --verify HEAD) &&
test "$hash7" = "$HASH7" &&
git bisect skip &&
para3=$(git rev-parse --verify HEAD) &&
test "$para3" = "$PARA_HASH3"
'
test_expect_success 'erroring out when using bad path arguments' '
test_must_fail git bisect start $PARA_HASH7 $HASH1 -- foobar 2> error.txt &&
test_grep "bad path arguments" error.txt
'
test_expect_success 'test bisection on bare repo - --no-checkout specified' '
git clone --bare . bare.nocheckout &&
(
cd bare.nocheckout &&
git bisect start --no-checkout &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run eval \
"test \$(git rev-list BISECT_HEAD ^$HASH2 --max-count=1 | wc -l) = 0" \
>../nocheckout.log
) &&
grep "$HASH3 is the first bad commit" nocheckout.log
'
test_expect_success 'test bisection on bare repo - --no-checkout defaulted' '
git clone --bare . bare.defaulted &&
(
cd bare.defaulted &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run eval \
"test \$(git rev-list BISECT_HEAD ^$HASH2 --max-count=1 | wc -l) = 0" \
>../defaulted.log
) &&
grep "$HASH3 is the first bad commit" defaulted.log
'
#
# This creates a broken branch which cannot be checked out because
# the tree created has been deleted.
#
# H1-H2-H3-H4-H5-H6-H7 <--other
# \
# S5-S6'-S7'-S8'-S9 <--broken
#
# Commits marked with ' have a missing tree.
#
test_expect_success 'broken branch creation' '
git bisect reset &&
git checkout -b broken $HASH4 &&
git tag BROKEN_HASH4 $HASH4 &&
add_line_into_file "5(broken): first line on a broken branch" hello2 &&
git tag BROKEN_HASH5 &&
mkdir missing &&
:> missing/MISSING &&
git add missing/MISSING &&
git commit -m "6(broken): Added file that will be deleted" &&
git tag BROKEN_HASH6 &&
deleted=$(git rev-parse --verify HEAD:missing) &&
add_line_into_file "7(broken): second line on a broken branch" hello2 &&
git tag BROKEN_HASH7 &&
add_line_into_file "8(broken): third line on a broken branch" hello2 &&
git tag BROKEN_HASH8 &&
git rm missing/MISSING &&
git commit -m "9(broken): Remove missing file" &&
git tag BROKEN_HASH9 &&
rm .git/objects/$(test_oid_to_path $deleted)
'
echo "" > expected.ok
cat > expected.missing-tree.default <<EOF
fatal: unable to read tree ($deleted)
EOF
test_expect_success 'bisect fails if tree is broken on start commit' '
git bisect reset &&
test_must_fail git bisect start BROKEN_HASH7 BROKEN_HASH4 2>error.txt &&
test_cmp expected.missing-tree.default error.txt
'
test_expect_success 'bisect fails if tree is broken on trial commit' '
git bisect reset &&
test_must_fail git bisect start BROKEN_HASH9 BROKEN_HASH4 2>error.txt &&
git reset --hard broken &&
git checkout broken &&
test_cmp expected.missing-tree.default error.txt
'
check_same()
{
echo "Checking $1 is the same as $2" &&
test_cmp_rev "$1" "$2"
}
test_expect_success 'bisect: --no-checkout - start commit bad' '
git bisect reset &&
git bisect start BROKEN_HASH7 BROKEN_HASH4 --no-checkout &&
check_same BROKEN_HASH6 BISECT_HEAD &&
git bisect reset
'
test_expect_success 'bisect: --no-checkout - trial commit bad' '
git bisect reset &&
git bisect start broken BROKEN_HASH4 --no-checkout &&
check_same BROKEN_HASH6 BISECT_HEAD &&
git bisect reset
'
test_expect_success 'bisect: --no-checkout - target before breakage' '
git bisect reset &&
git bisect start broken BROKEN_HASH4 --no-checkout &&
check_same BROKEN_HASH6 BISECT_HEAD &&
git bisect bad BISECT_HEAD &&
check_same BROKEN_HASH5 BISECT_HEAD &&
git bisect bad BISECT_HEAD &&
check_same BROKEN_HASH5 bisect/bad &&
git bisect reset
'
test_expect_success 'bisect: --no-checkout - target in breakage' '
git bisect reset &&
git bisect start broken BROKEN_HASH4 --no-checkout &&
check_same BROKEN_HASH6 BISECT_HEAD &&
git bisect bad BISECT_HEAD &&
check_same BROKEN_HASH5 BISECT_HEAD &&
test_must_fail git bisect good BISECT_HEAD &&
check_same BROKEN_HASH6 bisect/bad &&
git bisect reset
'
test_expect_success 'bisect: --no-checkout - target after breakage' '
git bisect reset &&
git bisect start broken BROKEN_HASH4 --no-checkout &&
check_same BROKEN_HASH6 BISECT_HEAD &&
git bisect good BISECT_HEAD &&
check_same BROKEN_HASH8 BISECT_HEAD &&
test_must_fail git bisect good BISECT_HEAD &&
check_same BROKEN_HASH9 bisect/bad &&
git bisect reset
'
test_expect_success 'bisect: demonstrate identification of damage boundary' "
git bisect reset &&
git checkout broken &&
git bisect start broken main --no-checkout &&
test_must_fail git bisect run \"\$SHELL_PATH\" -c '
GOOD=\$(git for-each-ref \"--format=%(objectname)\" refs/bisect/good-*) &&
git rev-list --objects BISECT_HEAD --not \$GOOD >tmp.\$\$ &&
git pack-objects --stdout >/dev/null < tmp.\$\$
rc=\$?
rm -f tmp.\$\$
test \$rc = 0' &&
check_same BROKEN_HASH6 bisect/bad &&
git bisect reset
"
cat > expected.bisect-log <<EOF
# bad: [$HASH4] Add <4: Ciao for now> into <hello>.
# good: [$HASH2] Add <2: A new day for git> into <hello>.
git bisect start '$HASH4' '$HASH2'
# good: [$HASH3] Add <3: Another new day for git> into <hello>.
git bisect good $HASH3
# first bad commit: [$HASH4] Add <4: Ciao for now> into <hello>.
EOF
test_expect_success 'bisect log: successful result' '
git bisect reset &&
git bisect start $HASH4 $HASH2 &&
git bisect good &&
git bisect log >bisect-log.txt &&
test_cmp expected.bisect-log bisect-log.txt &&
git bisect reset
'
cat > expected.bisect-skip-log <<EOF
# bad: [$HASH4] Add <4: Ciao for now> into <hello>.
# good: [$HASH2] Add <2: A new day for git> into <hello>.
git bisect start '$HASH4' '$HASH2'
# skip: [$HASH3] Add <3: Another new day for git> into <hello>.
git bisect skip $HASH3
# only skipped commits left to test
# possible first bad commit: [$HASH4] Add <4: Ciao for now> into <hello>.
# possible first bad commit: [$HASH3] Add <3: Another new day for git> into <hello>.
EOF
test_expect_success 'bisect log: only skip commits left' '
git bisect reset &&
git bisect start $HASH4 $HASH2 &&
test_must_fail git bisect skip &&
git bisect log >bisect-skip-log.txt &&
test_cmp expected.bisect-skip-log bisect-skip-log.txt &&
git bisect reset
'
test_expect_success '"git bisect bad HEAD" behaves as "git bisect bad"' '
git checkout parallel &&
git bisect start HEAD $HASH1 &&
git bisect good HEAD &&
git bisect bad HEAD &&
test "$HASH6" = $(git rev-parse --verify HEAD) &&
git bisect reset
'
test_expect_success 'bisect starts with only one new' '
git bisect reset &&
git bisect start &&
git bisect new $HASH4 &&
git bisect next
'
test_expect_success 'bisect does not start with only one old' '
git bisect reset &&
git bisect start &&
git bisect old $HASH1 &&
test_must_fail git bisect next
'
test_expect_success 'bisect start with one new and old' '
git bisect reset &&
git bisect start &&
git bisect old $HASH1 &&
git bisect new $HASH4 &&
git bisect new &&
git bisect new >bisect_result &&
grep "$HASH2 is the first new commit" bisect_result &&
git bisect log >log_to_replay.txt &&
git bisect reset
'
test_expect_success 'bisect replay with old and new' '
git bisect replay log_to_replay.txt >bisect_result &&
grep "$HASH2 is the first new commit" bisect_result &&
git bisect reset
'
test_expect_success 'bisect replay with CRLF log' '
append_cr <log_to_replay.txt >log_to_replay_crlf.txt &&
git bisect replay log_to_replay_crlf.txt >bisect_result_crlf &&
grep "$HASH2 is the first new commit" bisect_result_crlf &&
git bisect reset
'
test_expect_success 'bisect cannot mix old/new and good/bad' '
git bisect start &&
git bisect bad $HASH4 &&
test_must_fail git bisect old $HASH1
'
test_expect_success 'bisect terms needs 0 or 1 argument' '
git bisect reset &&
test_must_fail git bisect terms only-one &&
test_must_fail git bisect terms 1 2 &&
test_must_fail git bisect terms 2>actual &&
echo "error: no terms defined" >expected &&
test_cmp expected actual
'
test_expect_success 'bisect terms shows good/bad after start' '
git bisect reset &&
git bisect start HEAD $HASH1 &&
git bisect terms --term-good >actual &&
echo good >expected &&
test_cmp expected actual &&
git bisect terms --term-bad >actual &&
echo bad >expected &&
test_cmp expected actual
'
test_expect_success 'bisect start with one term1 and term2' '
git bisect reset &&
git bisect start --term-old term2 --term-new term1 &&
git bisect term2 $HASH1 &&
git bisect term1 $HASH4 &&
git bisect term1 &&
git bisect term1 >bisect_result &&
grep "$HASH2 is the first term1 commit" bisect_result &&
git bisect log >log_to_replay.txt &&
git bisect reset
'
test_expect_success 'bogus command does not start bisect' '
git bisect reset &&
test_must_fail git bisect --bisect-terms 1 2 2>out &&
! grep "You need to start" out &&
test_must_fail git bisect --bisect-terms 2>out &&
! grep "You need to start" out &&
grep "git bisect.*visualize" out &&
git bisect reset
'
test_expect_success 'bisect replay with term1 and term2' '
git bisect replay log_to_replay.txt >bisect_result &&
grep "$HASH2 is the first term1 commit" bisect_result &&
git bisect reset
'
test_expect_success 'bisect start term1 term2' '
git bisect reset &&
git bisect start --term-new term1 --term-old term2 $HASH4 $HASH1 &&
git bisect term1 &&
git bisect term1 >bisect_result &&
grep "$HASH2 is the first term1 commit" bisect_result &&
git bisect log >log_to_replay.txt &&
git bisect reset
'
test_expect_success 'bisect cannot mix terms' '
git bisect reset &&
git bisect start --term-good term1 --term-bad term2 $HASH4 $HASH1 &&
test_must_fail git bisect a &&
test_must_fail git bisect b &&
test_must_fail git bisect bad &&
test_must_fail git bisect good &&
test_must_fail git bisect new &&
test_must_fail git bisect old
'
test_expect_success 'bisect terms rejects invalid terms' '
git bisect reset &&
test_must_fail git bisect start --term-good &&
test_must_fail git bisect start --term-good invalid..term &&
test_must_fail git bisect start --term-bad &&
test_must_fail git bisect terms --term-bad invalid..term &&
test_must_fail git bisect terms --term-good bad &&
test_must_fail git bisect terms --term-good old &&
test_must_fail git bisect terms --term-good skip &&
test_must_fail git bisect terms --term-good reset &&
test_path_is_missing .git/BISECT_TERMS
'
test_expect_success 'bisect start --term-* does store terms' '
git bisect reset &&
git bisect start --term-bad=one --term-good=two &&
git bisect terms >actual &&
cat <<-EOF >expected &&
Your current terms are two for the old state
and one for the new state.
EOF
test_cmp expected actual &&
git bisect terms --term-bad >actual &&
echo one >expected &&
test_cmp expected actual &&
git bisect terms --term-good >actual &&
echo two >expected &&
test_cmp expected actual
'
test_expect_success 'bisect start takes options and revs in any order' '
git bisect reset &&
git bisect start --term-good one $HASH4 \
--term-good two --term-bad bad-term \
$HASH1 --term-good three -- &&
(git bisect terms --term-bad && git bisect terms --term-good) >actual &&
printf "%s\n%s\n" bad-term three >expected &&
test_cmp expected actual
'
# Bisect is started with --term-new and --term-old arguments,
# then skip. The HEAD should be changed.
test_expect_success 'bisect skip works with --term*' '
git bisect reset &&
git bisect start --term-new=fixed --term-old=unfixed HEAD $HASH1 &&
hash_skipped_from=$(git rev-parse --verify HEAD) &&
git bisect skip &&
hash_skipped_to=$(git rev-parse --verify HEAD) &&
test "$hash_skipped_from" != "$hash_skipped_to"
'
test_expect_success 'git bisect reset cleans bisection state properly' '
git bisect reset &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect reset &&
test -z "$(git for-each-ref "refs/bisect/*")" &&
test_ref_missing BISECT_EXPECTED_REV &&
test_path_is_missing ".git/BISECT_ANCESTORS_OK" &&
test_path_is_missing ".git/BISECT_LOG" &&
test_path_is_missing ".git/BISECT_RUN" &&
test_path_is_missing ".git/BISECT_TERMS" &&
test_path_is_missing ".git/BISECT_HEAD" &&
test_path_is_missing ".git/BISECT_START"
'
test_expect_success 'bisect handles annotated tags' '
test_commit commit-one &&
git tag -m foo tag-one &&
test_commit commit-two &&
git tag -m foo tag-two &&
git bisect start &&
git bisect good tag-one &&
git bisect bad tag-two >output &&
bad=$(git rev-parse --verify tag-two^{commit}) &&
grep "$bad is the first bad commit" output
'
test_expect_success 'bisect run fails with exit code equals or greater than 128' '
write_script test_script.sh <<-\EOF &&
exit 128
EOF
test_must_fail git bisect run ./test_script.sh &&
write_script test_script.sh <<-\EOF &&
exit 255
EOF
test_must_fail git bisect run ./test_script.sh
'
test_expect_success 'bisect visualize with a filename with dash and space' '
echo "My test line" >>"./-hello 2" &&
git add -- "./-hello 2" &&
git commit --quiet -m "Add test line" -- "./-hello 2" &&
git bisect visualize -p -- "-hello 2"
'
test_expect_success 'bisect state output with multiple good commits' '
git bisect reset &&
git bisect start >output &&
grep "waiting for both good and bad commits" output &&
git bisect log >output &&
grep "waiting for both good and bad commits" output &&
git bisect good "$HASH1" >output &&
grep "waiting for bad commit, 1 good commit known" output &&
git bisect log >output &&
grep "waiting for bad commit, 1 good commit known" output &&
git bisect good "$HASH2" >output &&
grep "waiting for bad commit, 2 good commits known" output &&
git bisect log >output &&
grep "waiting for bad commit, 2 good commits known" output
'
test_expect_success 'bisect state output with bad commit' '
git bisect reset &&
git bisect start >output &&
grep "waiting for both good and bad commits" output &&
git bisect log >output &&
grep "waiting for both good and bad commits" output &&
git bisect bad "$HASH4" >output &&
grep -F "waiting for good commit(s), bad commit known" output &&
git bisect log >output &&
grep -F "waiting for good commit(s), bad commit known" output
'
test_expect_success 'verify correct error message' '
git bisect reset &&
git bisect start $HASH4 $HASH1 &&
write_script test_script.sh <<-\EOF &&
rm .git/BISECT*
EOF
test_must_fail git bisect run ./test_script.sh 2>error &&
grep "git bisect good.*exited with error code" error
'
test_done
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