3 # Copyright (c) 2005 Johannes Schindelin
6 test_description='Testing multi_ack pack fetching'
10 # Test fetch-pack/upload-pack pair.
12 # Some convenience functions
17 branch=$(echo $name | sed -e 's/^\(.\).*$/\1/') &&
22 parents="$parents -p $1" &&
26 echo "$text" > test.txt &&
27 git update-index --add test.txt &&
28 tree=$(git write-tree) &&
29 # make sure timestamps are in correct order
31 commit=$(echo "$text" | git commit-tree $tree $parents) &&
32 eval "$name=$commit; export $name" &&
33 git update-ref "refs/heads/$branch" "$commit" &&
34 eval ${branch}TIP=$commit
41 test_expect_success "$number pull" '
44 git fetch-pack -k -v .. $heads &&
48 git update-ref refs/heads/A "$ATIP";;
51 git update-ref refs/heads/B "$BTIP";;
54 git symbolic-ref HEAD refs/heads/$(
56 sed -e "s/^\(.\).*$/\1/"
61 mv .git/objects/pack/pack-* . &&
62 p=$(ls -1 pack-*.pack) &&
63 git unpack-objects <$p &&
66 idx=$(echo pack-*.idx) &&
67 pack_count=$(git show-index <$idx | wc -l) &&
68 test $pack_count = $count &&
74 # Here begins the actual testing
76 # A1 - ... - A20 - A21
80 # client pulls A20, B1. Then tracks only B. Then pulls A.
82 test_expect_success 'setup' '
87 git config transfer.unpacklimit 0
92 while [ $cur -le 10 ]; do
93 add A$cur $(eval echo \$A$prev) &&
98 git update-ref refs/heads/A "$ATIP" &&
99 git update-ref refs/heads/B "$BTIP" &&
100 git symbolic-ref HEAD refs/heads/B
103 pull_to_client 1st "refs/heads/B refs/heads/A" $((11*3))
105 test_expect_success 'post 1st pull setup' '
109 while [ $cur -le 65 ]; do
110 add B$cur $(eval echo \$B$prev) &&
116 pull_to_client 2nd "refs/heads/B" $((64*3))
118 pull_to_client 3rd "refs/heads/A" $((1*3))
120 test_expect_success 'single branch clone' '
121 git clone --single-branch "file://$(pwd)/." singlebranch
124 test_expect_success 'single branch object count' '
125 GIT_DIR=singlebranch/.git git count-objects -v |
126 grep "^in-pack:" > count.singlebranch &&
127 echo "in-pack: 198" >expected &&
128 test_cmp expected count.singlebranch
131 test_expect_success 'single given branch clone' '
132 git clone --single-branch --branch A "file://$(pwd)/." branch-a &&
133 test_must_fail git --git-dir=branch-a/.git rev-parse origin/B
136 test_expect_success 'clone shallow depth 1' '
137 git clone --no-single-branch --depth 1 "file://$(pwd)/." shallow0 &&
138 test "$(git --git-dir=shallow0/.git rev-list --count HEAD)" = 1
141 test_expect_success 'clone shallow depth 1 with fsck' '
142 git config --global fetch.fsckobjects true &&
143 git clone --no-single-branch --depth 1 "file://$(pwd)/." shallow0fsck &&
144 test "$(git --git-dir=shallow0fsck/.git rev-list --count HEAD)" = 1 &&
145 git config --global --unset fetch.fsckobjects
148 test_expect_success 'clone shallow' '
149 git clone --no-single-branch --depth 2 "file://$(pwd)/." shallow
152 test_expect_success 'clone shallow depth count' '
153 test "$(git --git-dir=shallow/.git rev-list --count HEAD)" = 2
156 test_expect_success 'clone shallow object count' '
161 grep "^in-pack: 12" count.shallow
164 test_expect_success 'clone shallow object count (part 2)' '
165 sed -e "/^in-pack:/d" -e "/^packs:/d" -e "/^size-pack:/d" \
166 -e "/: 0$/d" count.shallow > count_output &&
167 test_must_be_empty count_output
170 test_expect_success 'fsck in shallow repo' '
177 test_expect_success 'simple fetch in shallow repo' '
184 test_expect_success 'no changes expected' '
188 ) > count.shallow.2 &&
189 cmp count.shallow count.shallow.2
192 test_expect_success 'fetch same depth in shallow repo' '
199 test_expect_success 'no changes expected' '
203 ) > count.shallow.3 &&
204 cmp count.shallow count.shallow.3
207 test_expect_success 'add two more' '
212 test_expect_success 'pull in shallow repo' '
219 test_expect_success 'clone shallow object count' '
224 grep "^count: 6" count.shallow
227 test_expect_success 'add two more (part 2)' '
232 test_expect_success 'deepening pull in shallow repo' '
235 git pull --depth 4 .. B
239 test_expect_success 'clone shallow object count' '
244 grep "^count: 12" count.shallow
247 test_expect_success 'deepening fetch in shallow repo' '
250 git fetch --depth 4 .. A:A
254 test_expect_success 'clone shallow object count' '
259 grep "^count: 18" count.shallow
262 test_expect_success 'pull in shallow repo with missing merge base' '
265 git fetch --depth 4 .. A &&
266 test_must_fail git merge --allow-unrelated-histories FETCH_HEAD
270 test_expect_success 'additional simple shallow deepenings' '
273 git fetch --depth=8 &&
274 git fetch --depth=10 &&
279 test_expect_success 'clone shallow depth count' '
280 test "$(git --git-dir=shallow/.git rev-list --count HEAD)" = 11
283 test_expect_success 'clone shallow object count' '
289 grep "^count: 54" count.shallow
292 test_expect_success 'fetch --no-shallow on full repo' '
293 test_must_fail git fetch --noshallow
296 test_expect_success 'fetch --depth --no-shallow' '
299 test_must_fail git fetch --depth=1 --noshallow
303 test_expect_success 'turn shallow to complete repository' '
306 git fetch --unshallow &&
307 ! test -f .git/shallow &&
312 test_expect_success 'clone shallow without --no-single-branch' '
313 git clone --depth 1 "file://$(pwd)/." shallow2
316 test_expect_success 'clone shallow object count' '
320 ) > count.shallow2 &&
321 grep "^in-pack: 3" count.shallow2
324 test_expect_success 'clone shallow with --branch' '
325 git clone --depth 1 --branch A "file://$(pwd)/." shallow3
328 test_expect_success 'clone shallow object count' '
329 echo "in-pack: 3" > count3.expected &&
330 GIT_DIR=shallow3/.git git count-objects -v |
331 grep "^in-pack" > count3.actual &&
332 test_cmp count3.expected count3.actual
335 test_expect_success 'clone shallow with detached HEAD' '
336 git checkout HEAD^ &&
337 git clone --depth 1 "file://$(pwd)/." shallow5 &&
339 GIT_DIR=shallow5/.git git rev-parse HEAD >actual &&
340 git rev-parse HEAD^ >expected &&
341 test_cmp expected actual
344 test_expect_success 'shallow clone pulling tags' '
345 git tag -a -m A TAGA1 A &&
346 git tag -a -m B TAGB1 B &&
349 git clone --depth 1 "file://$(pwd)/." shallow6 &&
351 cat >taglist.expected <<\EOF &&
355 GIT_DIR=shallow6/.git git tag -l >taglist.actual &&
356 test_cmp taglist.expected taglist.actual &&
358 echo "in-pack: 4" > count6.expected &&
359 GIT_DIR=shallow6/.git git count-objects -v |
360 grep "^in-pack" > count6.actual &&
361 test_cmp count6.expected count6.actual
364 test_expect_success 'shallow cloning single tag' '
365 git clone --depth 1 --branch=TAGB1 "file://$(pwd)/." shallow7 &&
366 cat >taglist.expected <<\EOF &&
370 GIT_DIR=shallow7/.git git tag -l >taglist.actual &&
371 test_cmp taglist.expected taglist.actual &&
373 echo "in-pack: 4" > count7.expected &&
374 GIT_DIR=shallow7/.git git count-objects -v |
375 grep "^in-pack" > count7.actual &&
376 test_cmp count7.expected count7.actual
379 test_expect_success 'clone shallow with packed refs' '
380 git pack-refs --all &&
381 git clone --depth 1 --branch A "file://$(pwd)/." shallow8 &&
382 echo "in-pack: 4" > count8.expected &&
383 GIT_DIR=shallow8/.git git count-objects -v |
384 grep "^in-pack" > count8.actual &&
385 test_cmp count8.expected count8.actual
388 test_expect_success 'fetch in shallow repo unreachable shallow objects' '
390 git clone --bare --branch B --single-branch "file://$(pwd)/." no-reflog &&
391 git clone --depth 1 "file://$(pwd)/no-reflog" shallow9 &&
393 git tag -d TAGB1 TAGB2 &&
394 git update-ref refs/heads/B B~~ &&
395 git gc --prune=now &&
398 git fsck --no-dangling
401 test_expect_success 'fetch creating new shallow root' '
403 git clone "file://$(pwd)/." shallow10 &&
404 git commit --allow-empty -m empty &&
406 git fetch --depth=1 --progress 2>actual &&
407 # This should fetch only the empty commit, no tree or
409 test_i18ngrep "remote: Total 1" actual
413 test_expect_success 'setup tests for the --stdin parameter' '
418 for head in A B C D E F
422 cat >input <<-\EOF &&
434 sort <input >expect &&
442 test_expect_success 'setup fetch refs from cmdline v[12]' '
443 cp -r client client1 &&
447 for version in '' 1 2
449 test_expect_success "protocol.version=$version fetch refs from cmdline" "
452 GIT_TEST_PROTOCOL_VERSION=$version git fetch-pack --no-progress .. \$(cat ../input)
454 cut -d ' ' -f 2 <output | sort >actual &&
455 test_cmp expect actual
459 test_expect_success 'fetch refs from stdin' '
462 git fetch-pack --stdin --no-progress .. <../input
464 cut -d " " -f 2 <output | sort >actual &&
465 test_cmp expect actual
468 test_expect_success 'fetch mixed refs from cmdline and stdin' '
471 tail -n +5 ../input |
472 git fetch-pack --stdin --no-progress .. $(head -n 4 ../input)
474 cut -d " " -f 2 <output | sort >actual &&
475 test_cmp expect actual
478 test_expect_success 'test duplicate refs from stdin' '
481 git fetch-pack --stdin --no-progress .. <../input.dup
483 cut -d " " -f 2 <output | sort >actual &&
484 test_cmp expect actual
487 test_expect_success 'set up tests of missing reference' '
488 cat >expect-error <<-\EOF
489 error: no such remote ref refs/heads/xyzzy
493 test_expect_success 'test lonely missing ref' '
496 test_must_fail git fetch-pack --no-progress .. refs/heads/xyzzy 2>../error-m
498 test_i18ncmp expect-error error-m
501 test_expect_success 'test missing ref after existing' '
504 test_must_fail git fetch-pack --no-progress .. refs/heads/A refs/heads/xyzzy 2>../error-em
506 test_i18ncmp expect-error error-em
509 test_expect_success 'test missing ref before existing' '
512 test_must_fail git fetch-pack --no-progress .. refs/heads/xyzzy refs/heads/A 2>../error-me
514 test_i18ncmp expect-error error-me
517 test_expect_success 'test --all, --depth, and explicit head' '
520 git fetch-pack --no-progress --all --depth=1 .. refs/heads/A
521 ) >out-adh 2>error-adh
524 test_expect_success 'test --all, --depth, and explicit tag' '
525 git tag OLDTAG refs/heads/B~5 &&
528 git fetch-pack --no-progress --all --depth=1 .. refs/tags/OLDTAG
529 ) >out-adt 2>error-adt
532 test_expect_success 'test --all with tag to non-tip' '
533 git commit --allow-empty -m non-tip &&
534 git commit --allow-empty -m tip &&
535 git tag -m "annotated" non-tip HEAD^ &&
538 git fetch-pack --all ..
542 test_expect_success 'test --all wrt tag to non-commits' '
543 # create tag-to-{blob,tree,commit,tag}, making sure all tagged objects
544 # are reachable only via created tag references.
545 blob=$(echo "hello blob" | git hash-object -t blob -w --stdin) &&
546 git tag -a -m "tag -> blob" tag-to-blob $blob &&
548 tree=$(printf "100644 blob $blob\tfile" | git mktree) &&
549 git tag -a -m "tag -> tree" tag-to-tree $tree &&
551 tree2=$(printf "100644 blob $blob\tfile2" | git mktree) &&
552 commit=$(git commit-tree -m "hello commit" $tree) &&
553 git tag -a -m "tag -> commit" tag-to-commit $commit &&
555 blob2=$(echo "hello blob2" | git hash-object -t blob -w --stdin) &&
556 tag=$(git mktag <<-EOF
560 tagger author A U Thor <author@example.com> 0 +0000
565 git tag -a -m "tag -> tag" tag-to-tag $tag &&
567 # `fetch-pack --all` should succeed fetching all those objects.
572 git fetch-pack --all .. &&
573 git cat-file blob $blob >/dev/null &&
574 git cat-file tree $tree >/dev/null &&
575 git cat-file commit $commit >/dev/null &&
576 git cat-file tag $tag >/dev/null
580 test_expect_success 'shallow fetch with tags does not break the repository' '
591 git fetch --depth=2 ../.git master:branch &&
596 test_expect_success 'fetch-pack can fetch a raw sha1' '
602 git update-ref refs/hidden/one HEAD^ &&
603 git config transfer.hiderefs refs/hidden &&
604 git config uploadpack.allowtipsha1inwant true
606 git fetch-pack hidden $(git -C hidden rev-parse refs/hidden/one)
609 test_expect_success 'fetch-pack can fetch a raw sha1 that is advertised as a ref' '
610 rm -rf server client &&
612 test_commit -C server 1 &&
615 git -C client fetch-pack ../server \
616 $(git -C server rev-parse refs/heads/master)
619 test_expect_success 'fetch-pack can fetch a raw sha1 overlapping a named ref' '
620 rm -rf server client &&
622 test_commit -C server 1 &&
623 test_commit -C server 2 &&
626 git -C client fetch-pack ../server \
627 $(git -C server rev-parse refs/tags/1) refs/tags/1
630 test_expect_success 'fetch-pack cannot fetch a raw sha1 that is not advertised as a ref' '
634 test_commit -C server 5 &&
635 git -C server tag -d 5 &&
636 test_commit -C server 6 &&
639 # Some protocol versions (e.g. 2) support fetching
640 # unadvertised objects, so restrict this test to v0.
641 test_must_fail env GIT_TEST_PROTOCOL_VERSION= git -C client fetch-pack ../server \
642 $(git -C server rev-parse refs/heads/master^) 2>err &&
643 test_i18ngrep "Server does not allow request for unadvertised object" err
647 cat >expected <<-EOF &&
652 git fetch-pack --diag-url "$1" | grep -v hostandport= >actual &&
653 test_cmp expected actual
656 check_prot_host_port_path () {
661 ehost=$(echo $3 | tr -d "[]")
662 diagport="Diag: port=$4"
667 ehost=$(echo $3$4 | sed -e "s/22$/:22/" -e "s/NONE//")
678 grep -v "^$" exp >expected
679 git fetch-pack --diag-url "$1" >actual &&
680 test_cmp expected actual
683 for r in repo re:po re/po
685 # git or ssh with scheme
686 for p in "ssh+git" "git+ssh" git ssh
688 for h in host user@host user@[::1] user@::1
692 test_expect_success "fetch-pack --diag-url $p://$h$c/$r" '
693 check_prot_host_port_path $p://$h/$r $p "$h" NONE "/$r"
695 # "/~" -> "~" conversion
696 test_expect_success "fetch-pack --diag-url $p://$h$c/~$r" '
697 check_prot_host_port_path $p://$h/~$r $p "$h" NONE "~$r"
701 for h in host User@host User@[::1]
703 test_expect_success "fetch-pack --diag-url $p://$h:22/$r" '
704 check_prot_host_port_path $p://$h:22/$r $p "$h" 22 "/$r"
711 test_expect_success !MINGW "fetch-pack --diag-url $p://$h/$r" '
712 check_prot_path $p://$h/$r $p "/$r"
714 test_expect_success MINGW "fetch-pack --diag-url $p://$h/$r" '
715 check_prot_path $p://$h/$r $p "//$h/$r"
717 test_expect_success MINGW "fetch-pack --diag-url $p:///$r" '
718 check_prot_path $p:///$r $p "/$r"
720 # No "/~" -> "~" conversion for file
721 test_expect_success !MINGW "fetch-pack --diag-url $p://$h/~$r" '
722 check_prot_path $p://$h/~$r $p "/~$r"
724 test_expect_success MINGW "fetch-pack --diag-url $p://$h/~$r" '
725 check_prot_path $p://$h/~$r $p "//$h/~$r"
728 # file without scheme
729 for h in nohost nohost:12 [::1] [::1]:23 [ [:aa
731 test_expect_success "fetch-pack --diag-url ./$h:$r" '
732 check_prot_path ./$h:$r $p "./$h:$r"
734 # No "/~" -> "~" conversion for file
735 test_expect_success "fetch-pack --diag-url ./$p:$h/~$r" '
736 check_prot_path ./$p:$h/~$r $p "./$p:$h/~$r"
743 test_expect_success "fetch-pack --diag-url $h:$r" '
744 check_prot_host_port_path $h:$r $p "$h" NONE "$r"
746 # Do "/~" -> "~" conversion
747 test_expect_success "fetch-pack --diag-url $h:/~$r" '
748 check_prot_host_port_path $h:/~$r $p "$h" NONE "~$r"
753 test_expect_success MINGW 'fetch-pack --diag-url file://c:/repo' '
754 check_prot_path file://c:/repo file c:/repo
756 test_expect_success MINGW 'fetch-pack --diag-url c:repo' '
757 check_prot_path c:repo file c:repo
760 test_expect_success 'clone shallow since ...' '
761 test_create_repo shallow-since &&
764 GIT_COMMITTER_DATE="100000000 +0700" git commit --allow-empty -m one &&
765 GIT_COMMITTER_DATE="200000000 +0700" git commit --allow-empty -m two &&
766 GIT_COMMITTER_DATE="300000000 +0700" git commit --allow-empty -m three &&
767 git clone --shallow-since "300000000 +0700" "file://$(pwd)/." ../shallow11 &&
768 git -C ../shallow11 log --pretty=tformat:%s HEAD >actual &&
769 echo three >expected &&
770 test_cmp expected actual
774 test_expect_success 'fetch shallow since ...' '
775 git -C shallow11 fetch --shallow-since "200000000 +0700" origin &&
776 git -C shallow11 log --pretty=tformat:%s origin/master >actual &&
777 cat >expected <<-\EOF &&
781 test_cmp expected actual
784 test_expect_success 'clone shallow since selects no commits' '
785 test_create_repo shallow-since-the-future &&
787 cd shallow-since-the-future &&
788 GIT_COMMITTER_DATE="100000000 +0700" git commit --allow-empty -m one &&
789 GIT_COMMITTER_DATE="200000000 +0700" git commit --allow-empty -m two &&
790 GIT_COMMITTER_DATE="300000000 +0700" git commit --allow-empty -m three &&
791 test_must_fail git clone --shallow-since "900000000 +0700" "file://$(pwd)/." ../shallow111
795 # A few subtle things about the request in this test:
797 # - the server must have commit-graphs present and enabled
799 # - the history is such that our want/have share a common ancestor ("base"
802 # - we send only a single have, which is fewer than a normal client would
803 # send. This ensures that we don't parse "base" up front with
804 # parse_object(), but rather traverse to it as a parent while deciding if we
805 # can stop the "have" negotiation, and call parse_commit(). The former
806 # sees the actual object data and so always loads the three oid, whereas the
807 # latter will try to load it lazily.
809 # - we must use protocol v2, because it handles the "have" negotiation before
810 # processing the shallow directives
812 test_expect_success 'shallow since with commit graph and already-seen commit' '
813 test_create_repo shallow-since-graph &&
815 cd shallow-since-graph &&
817 test_commit master &&
818 git checkout -b other HEAD^ &&
820 git commit-graph write --reachable &&
821 git config core.commitGraph true &&
823 GIT_PROTOCOL=version=2 git upload-pack . <<-EOF >/dev/null
825 00010013deepen-since 1
826 0032want $(git rev-parse other)
827 0032have $(git rev-parse master)
833 test_expect_success 'shallow clone exclude tag two' '
834 test_create_repo shallow-exclude &&
836 cd shallow-exclude &&
840 git clone --shallow-exclude two "file://$(pwd)/." ../shallow12 &&
841 git -C ../shallow12 log --pretty=tformat:%s HEAD >actual &&
842 echo three >expected &&
843 test_cmp expected actual
847 test_expect_success 'fetch exclude tag one' '
848 git -C shallow12 fetch --shallow-exclude one origin &&
849 git -C shallow12 log --pretty=tformat:%s origin/master >actual &&
850 test_write_lines three two >expected &&
851 test_cmp expected actual
854 test_expect_success 'fetching deepen' '
855 test_create_repo shallow-deepen &&
861 git clone --depth 1 "file://$(pwd)/." deepen &&
863 git -C deepen log --pretty=tformat:%s master >actual &&
864 echo three >expected &&
865 test_cmp expected actual &&
866 git -C deepen fetch --deepen=1 &&
867 git -C deepen log --pretty=tformat:%s origin/master >actual &&
868 cat >expected <<-\EOF &&
873 test_cmp expected actual
877 test_expect_success 'use ref advertisement to prune "have" lines sent' '
878 rm -rf server client &&
880 test_commit -C server both_have_1 &&
881 git -C server tag -d both_have_1 &&
882 test_commit -C server both_have_2 &&
884 git clone server client &&
885 test_commit -C server server_has &&
886 test_commit -C client client_has &&
888 # In both protocol v0 and v2, ensure that the parent of both_have_2 is
889 # not sent as a "have" line. The client should know that the server has
890 # both_have_2, so it only needs to inform the server that it has
891 # both_have_2, and the server can infer the rest.
894 cp -r client clientv0 &&
895 GIT_TRACE_PACKET="$(pwd)/trace" git -C clientv0 \
896 fetch origin server_has both_have_2 &&
897 grep "have $(git -C client rev-parse client_has)" trace &&
898 grep "have $(git -C client rev-parse both_have_2)" trace &&
899 ! grep "have $(git -C client rev-parse both_have_2^)" trace &&
902 cp -r client clientv2 &&
903 GIT_TRACE_PACKET="$(pwd)/trace" git -C clientv2 -c protocol.version=2 \
904 fetch origin server_has both_have_2 &&
905 grep "have $(git -C client rev-parse client_has)" trace &&
906 grep "have $(git -C client rev-parse both_have_2)" trace &&
907 ! grep "have $(git -C client rev-parse both_have_2^)" trace
910 test_expect_success 'filtering by size' '
911 rm -rf server client &&
912 test_create_repo server &&
913 test_commit -C server one &&
914 test_config -C server uploadpack.allowfilter 1 &&
916 test_create_repo client &&
917 git -C client fetch-pack --filter=blob:limit=0 ../server HEAD &&
919 # Ensure that object is not inadvertently fetched
920 test_must_fail git -C client cat-file -e $(git hash-object server/one.t)
923 test_expect_success 'filtering by size has no effect if support for it is not advertised' '
924 rm -rf server client &&
925 test_create_repo server &&
926 test_commit -C server one &&
928 test_create_repo client &&
929 git -C client fetch-pack --filter=blob:limit=0 ../server HEAD 2> err &&
931 # Ensure that object is fetched
932 git -C client cat-file -e $(git hash-object server/one.t) &&
934 test_i18ngrep "filtering not recognized by server" err
937 fetch_filter_blob_limit_zero () {
941 rm -rf "$SERVER" client &&
942 test_create_repo "$SERVER" &&
943 test_commit -C "$SERVER" one &&
944 test_config -C "$SERVER" uploadpack.allowfilter 1 &&
946 git clone "$URL" client &&
947 test_config -C client extensions.partialclone origin &&
949 test_commit -C "$SERVER" two &&
951 git -C client fetch --filter=blob:limit=0 origin HEAD:somewhere &&
953 # Ensure that commit is fetched, but blob is not
954 test_config -C client extensions.partialclone "arbitrary string" &&
955 git -C client cat-file -e $(git -C "$SERVER" rev-parse two) &&
956 test_must_fail git -C client cat-file -e $(git hash-object "$SERVER/two.t")
959 test_expect_success 'fetch with --filter=blob:limit=0' '
960 fetch_filter_blob_limit_zero server server
963 . "$TEST_DIRECTORY"/lib-httpd.sh
966 test_expect_success 'fetch with --filter=blob:limit=0 and HTTP' '
967 fetch_filter_blob_limit_zero "$HTTPD_DOCUMENT_ROOT_PATH/server" "$HTTPD_URL/smart/server"
970 # DO NOT add non-httpd-specific tests here, because the last part of this
971 # test script is only executed when httpd is available and enabled.