git-commit-vandalism/t/t6030-bisect-run.sh
Junio C Hamano 0a5280a9f4 git-bisect: allow bisecting with only one bad commit.
This allows you to say:

	git bisect start
	git bisect bad $bad
	git bisect next

to start bisection without knowing a good commit.  This would
have you try a commit that is half-way since the beginning of
the history, which is rather wasteful if you already know a good
commit, but if you don't (or your history is short enough that
you do not care), there is no reason not to allow this.

Signed-off-by: Junio C Hamano <junkio@cox.net>
2007-04-06 17:55:57 -07:00

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#!/bin/sh
#
# Copyright (c) 2007 Christian Couder
#
test_description='Tests git-bisect functionality'
exec </dev/null
. ./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 <$_line> inside."
fi
git-commit -m "$MSG" $_file
}
HASH1=
HASH3=
HASH4=
test_expect_success \
'set up basic repo with 1 file (hello) and 4 commits' \
'add_line_into_file "1: Hello World" hello &&
add_line_into_file "2: A new day for git" hello &&
add_line_into_file "3: Another new day for git" hello &&
add_line_into_file "4: Ciao for now" hello &&
HASH1=$(git rev-list HEAD | tail -1) &&
HASH3=$(git rev-list HEAD | head -2 | tail -1) &&
HASH4=$(git rev-list HEAD | head -1)'
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 starts with only one good' '
git bisect reset &&
git bisect start &&
git bisect good $HASH1 || return 1
if git bisect next
then
echo Oops, should have failed.
false
else
:
fi
'
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
'
# We want to automatically find the commit that
# introduced "Another" into hello.
test_expect_success \
'"git bisect run" simple case' \
'echo "#"\!"/bin/sh" > test_script.sh &&
echo "grep Another hello > /dev/null" >> test_script.sh &&
echo "test \$? -ne 0" >> test_script.sh &&
chmod +x test_script.sh &&
git bisect start &&
git bisect good $HASH1 &&
git bisect bad $HASH4 &&
git bisect run ./test_script.sh > my_bisect_log.txt &&
grep "$HASH3 is first bad commit" my_bisect_log.txt &&
git bisect reset'
# We want to automatically find the commit that
# introduced "Ciao" into hello.
test_expect_success \
'"git bisect run" with more complex "git bisect start"' \
'echo "#"\!"/bin/sh" > test_script.sh &&
echo "grep Ciao hello > /dev/null" >> test_script.sh &&
echo "test \$? -ne 0" >> test_script.sh &&
chmod +x test_script.sh &&
git bisect start $HASH4 $HASH1 &&
git bisect run ./test_script.sh > my_bisect_log.txt &&
grep "$HASH4 is first bad commit" my_bisect_log.txt &&
git bisect reset'
#
#
test_done