git/t/t5500-fetch-pack.sh
Junio C Hamano 41ac414ea2 Sane use of test_expect_failure
Originally, test_expect_failure was designed to be the opposite
of test_expect_success, but this was a bad decision.  Most tests
run a series of commands that leads to the single command that
needs to be tested, like this:

    test_expect_{success,failure} 'test title' '
	setup1 &&
        setup2 &&
        setup3 &&
        what is to be tested
    '

And expecting a failure exit from the whole sequence misses the
point of writing tests.  Your setup$N that are supposed to
succeed may have failed without even reaching what you are
trying to test.  The only valid use of test_expect_failure is to
check a trivial single command that is expected to fail, which
is a minority in tests of Porcelain-ish commands.

This large-ish patch rewrites all uses of test_expect_failure to
use test_expect_success and rewrites the condition of what is
tested, like this:

    test_expect_success 'test title' '
	setup1 &&
        setup2 &&
        setup3 &&
        ! this command should fail
    '

test_expect_failure is redefined to serve as a reminder that
that test *should* succeed but due to a known breakage in git it
currently does not pass.  So if git-foo command should create a
file 'bar' but you discovered a bug that it doesn't, you can
write a test like this:

    test_expect_failure 'git-foo should create bar' '
        rm -f bar &&
        git foo &&
        test -f bar
    '

This construct acts similar to test_expect_success, but instead
of reporting "ok/FAIL" like test_expect_success does, the
outcome is reported as "FIXED/still broken".

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-02-01 20:49:34 -08:00

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#!/bin/sh
#
# Copyright (c) 2005 Johannes Schindelin
#
test_description='Testing multi_ack pack fetching
'
. ./test-lib.sh
# Test fetch-pack/upload-pack pair.
# Some convenience functions
add () {
name=$1
text="$@"
branch=`echo $name | sed -e 's/^\(.\).*$/\1/'`
parents=""
shift
while test $1; do
parents="$parents -p $1"
shift
done
echo "$text" > test.txt
git update-index --add test.txt
tree=$(git write-tree)
# make sure timestamps are in correct order
sec=$(($sec+1))
commit=$(echo "$text" | GIT_AUTHOR_DATE=$sec \
git commit-tree $tree $parents 2>>log2.txt)
export $name=$commit
echo $commit > .git/refs/heads/$branch
eval ${branch}TIP=$commit
}
count_objects () {
ls .git/objects/??/* 2>>log2.txt | wc -l | tr -d " "
}
test_expect_object_count () {
message=$1
count=$2
output="$(count_objects)"
test_expect_success \
"new object count $message" \
"test $count = $output"
}
pull_to_client () {
number=$1
heads=$2
count=$3
no_strict_count_check=$4
cd client
test_expect_success "$number pull" \
"git-fetch-pack -k -v .. $heads"
case "$heads" in *A*) echo $ATIP > .git/refs/heads/A;; esac
case "$heads" in *B*) echo $BTIP > .git/refs/heads/B;; esac
git symbolic-ref HEAD refs/heads/`echo $heads | sed -e 's/^\(.\).*$/\1/'`
test_expect_success "fsck" 'git fsck --full > fsck.txt 2>&1'
test_expect_success 'check downloaded results' \
'mv .git/objects/pack/pack-* . &&
p=`ls -1 pack-*.pack` &&
git unpack-objects <$p &&
git fsck --full'
test_expect_success "new object count after $number pull" \
'idx=`echo pack-*.idx` &&
pack_count=`git show-index <$idx | wc -l` &&
test $pack_count = $count'
test -z "$pack_count" && pack_count=0
if [ -z "$no_strict_count_check" ]; then
test_expect_success "minimal count" "test $count = $pack_count"
else
test $count != $pack_count && \
echo "WARNING: $pack_count objects transmitted, only $count of which were needed"
fi
rm -f pack-*
cd ..
}
# Here begins the actual testing
# A1 - ... - A20 - A21
# \
# B1 - B2 - .. - B70
# client pulls A20, B1. Then tracks only B. Then pulls A.
(
mkdir client &&
cd client &&
git init 2>> log2.txt &&
git config transfer.unpacklimit 0
)
add A1
prev=1; cur=2; while [ $cur -le 10 ]; do
add A$cur $(eval echo \$A$prev)
prev=$cur
cur=$(($cur+1))
done
add B1 $A1
echo $ATIP > .git/refs/heads/A
echo $BTIP > .git/refs/heads/B
git symbolic-ref HEAD refs/heads/B
pull_to_client 1st "B A" $((11*3))
add A11 $A10
prev=1; cur=2; while [ $cur -le 65 ]; do
add B$cur $(eval echo \$B$prev)
prev=$cur
cur=$(($cur+1))
done
pull_to_client 2nd "B" $((64*3))
pull_to_client 3rd "A" $((1*3)) # old fails
test_expect_success "clone shallow" "git-clone --depth 2 file://`pwd`/. shallow"
(cd shallow; git count-objects -v) > count.shallow
test_expect_success "clone shallow object count" \
"test \"in-pack: 18\" = \"$(grep in-pack count.shallow)\""
count_output () {
sed -e '/^in-pack:/d' -e '/^packs:/d' -e '/: 0$/d' "$1"
}
test_expect_success "clone shallow object count (part 2)" '
test -z "$(count_output count.shallow)"
'
test_expect_success "fsck in shallow repo" \
"(cd shallow; git fsck --full)"
#test_done; exit
add B66 $B65
add B67 $B66
test_expect_success "pull in shallow repo" \
"(cd shallow; git pull .. B)"
(cd shallow; git count-objects -v) > count.shallow
test_expect_success "clone shallow object count" \
"test \"count: 6\" = \"$(grep count count.shallow)\""
add B68 $B67
add B69 $B68
test_expect_success "deepening pull in shallow repo" \
"(cd shallow; git pull --depth 4 .. B)"
(cd shallow; git count-objects -v) > count.shallow
test_expect_success "clone shallow object count" \
"test \"count: 12\" = \"$(grep count count.shallow)\""
test_expect_success "deepening fetch in shallow repo" \
"(cd shallow; git fetch --depth 4 .. A:A)"
(cd shallow; git count-objects -v) > count.shallow
test_expect_success "clone shallow object count" \
"test \"count: 18\" = \"$(grep count count.shallow)\""
test_expect_success "pull in shallow repo with missing merge base" \
"(cd shallow && ! git pull --depth 4 .. A)"
test_done