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git/t/t1400-update-ref.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) 2006 Shawn Pearce
#
test_description='Test git update-ref and basic ref logging'
. ./test-lib.sh
Z=0000000000000000000000000000000000000000
test_expect_success setup '
for name in A B C D E F
do
test_tick &&
T=$(git write-tree) &&
sha1=$(echo $name | git commit-tree $T) &&
eval $name=$sha1
done
'
m=refs/heads/master
n_dir=refs/heads/gu
n=$n_dir/fixes
test_expect_success \
"create $m" \
"git update-ref $m $A &&
test $A"' = $(cat .git/'"$m"')'
test_expect_success \
"create $m" \
"git update-ref $m $B $A &&
test $B"' = $(cat .git/'"$m"')'
rm -f .git/$m
test_expect_success \
"fail to create $n" \
"touch .git/$n_dir
git update-ref $n $A >out 2>err"'
test $? != 0'
rm -f .git/$n_dir out err
test_expect_success \
"create $m (by HEAD)" \
"git update-ref HEAD $A &&
test $A"' = $(cat .git/'"$m"')'
test_expect_success \
"create $m (by HEAD)" \
"git update-ref HEAD $B $A &&
test $B"' = $(cat .git/'"$m"')'
rm -f .git/$m
test_expect_success '(not) create HEAD with old sha1' "
! git update-ref HEAD $A $B
"
test_expect_success "(not) prior created .git/$m" "
! test -f .git/$m
"
rm -f .git/$m
test_expect_success \
"create HEAD" \
"git update-ref HEAD $A"
test_expect_success '(not) change HEAD with wrong SHA1' "
! git update-ref HEAD $B $Z
"
test_expect_success "(not) changed .git/$m" "
! test $B"' = $(cat .git/'"$m"')
'
rm -f .git/$m
: a repository with working tree always has reflog these days...
: >.git/logs/refs/heads/master
test_expect_success \
"create $m (logged by touch)" \
'GIT_COMMITTER_DATE="2005-05-26 23:30" \
git update-ref HEAD '"$A"' -m "Initial Creation" &&
test '"$A"' = $(cat .git/'"$m"')'
test_expect_success \
"update $m (logged by touch)" \
'GIT_COMMITTER_DATE="2005-05-26 23:31" \
git update-ref HEAD'" $B $A "'-m "Switch" &&
test '"$B"' = $(cat .git/'"$m"')'
test_expect_success \
"set $m (logged by touch)" \
'GIT_COMMITTER_DATE="2005-05-26 23:41" \
git update-ref HEAD'" $A &&
test $A"' = $(cat .git/'"$m"')'
cat >expect <<EOF
$Z $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000 Initial Creation
$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150260 +0000 Switch
$B $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000
EOF
test_expect_success \
"verifying $m's log" \
"diff expect .git/logs/$m"
rm -rf .git/$m .git/logs expect
test_expect_success \
'enable core.logAllRefUpdates' \
'git config core.logAllRefUpdates true &&
test true = $(git config --bool --get core.logAllRefUpdates)'
test_expect_success \
"create $m (logged by config)" \
'GIT_COMMITTER_DATE="2005-05-26 23:32" \
git update-ref HEAD'" $A "'-m "Initial Creation" &&
test '"$A"' = $(cat .git/'"$m"')'
test_expect_success \
"update $m (logged by config)" \
'GIT_COMMITTER_DATE="2005-05-26 23:33" \
git update-ref HEAD'" $B $A "'-m "Switch" &&
test '"$B"' = $(cat .git/'"$m"')'
test_expect_success \
"set $m (logged by config)" \
'GIT_COMMITTER_DATE="2005-05-26 23:43" \
git update-ref HEAD '"$A &&
test $A"' = $(cat .git/'"$m"')'
cat >expect <<EOF
$Z $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150320 +0000 Initial Creation
$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150380 +0000 Switch
$B $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 +0000
EOF
test_expect_success \
"verifying $m's log" \
'diff expect .git/logs/$m'
rm -f .git/$m .git/logs/$m expect
git update-ref $m $D
cat >.git/logs/$m <<EOF
$C $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150320 -0500
$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150380 -0500
$F $Z $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150680 -0500
$Z $E $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 -0500
EOF
ed="Thu, 26 May 2005 18:32:00 -0500"
gd="Thu, 26 May 2005 18:33:00 -0500"
ld="Thu, 26 May 2005 18:43:00 -0500"
test_expect_success \
'Query "master@{May 25 2005}" (before history)' \
'rm -f o e
git rev-parse --verify "master@{May 25 2005}" >o 2>e &&
test '"$C"' = $(cat o) &&
test "warning: Log for '\'master\'' only goes back to $ed." = "$(cat e)"'
test_expect_success \
"Query master@{2005-05-25} (before history)" \
'rm -f o e
git rev-parse --verify master@{2005-05-25} >o 2>e &&
test '"$C"' = $(cat o) &&
echo test "warning: Log for '\'master\'' only goes back to $ed." = "$(cat e)"'
test_expect_success \
'Query "master@{May 26 2005 23:31:59}" (1 second before history)' \
'rm -f o e
git rev-parse --verify "master@{May 26 2005 23:31:59}" >o 2>e &&
test '"$C"' = $(cat o) &&
test "warning: Log for '\''master'\'' only goes back to $ed." = "$(cat e)"'
test_expect_success \
'Query "master@{May 26 2005 23:32:00}" (exactly history start)' \
'rm -f o e
git rev-parse --verify "master@{May 26 2005 23:32:00}" >o 2>e &&
test '"$A"' = $(cat o) &&
test "" = "$(cat e)"'
test_expect_success \
'Query "master@{2005-05-26 23:33:01}" (middle of history with gap)' \
'rm -f o e
git rev-parse --verify "master@{2005-05-26 23:33:01}" >o 2>e &&
test '"$B"' = $(cat o) &&
test "warning: Log .git/logs/'"$m has gap after $gd"'." = "$(cat e)"'
test_expect_success \
'Query "master@{2005-05-26 23:38:00}" (middle of history)' \
'rm -f o e
git rev-parse --verify "master@{2005-05-26 23:38:00}" >o 2>e &&
test '"$Z"' = $(cat o) &&
test "" = "$(cat e)"'
test_expect_success \
'Query "master@{2005-05-26 23:43:00}" (exact end of history)' \
'rm -f o e
git rev-parse --verify "master@{2005-05-26 23:43:00}" >o 2>e &&
test '"$E"' = $(cat o) &&
test "" = "$(cat e)"'
test_expect_success \
'Query "master@{2005-05-28}" (past end of history)' \
'rm -f o e
git rev-parse --verify "master@{2005-05-28}" >o 2>e &&
test '"$D"' = $(cat o) &&
test "warning: Log .git/logs/'"$m unexpectedly ended on $ld"'." = "$(cat e)"'
rm -f .git/$m .git/logs/$m expect
test_expect_success \
'creating initial files' \
'echo TEST >F &&
git add F &&
GIT_AUTHOR_DATE="2005-05-26 23:30" \
GIT_COMMITTER_DATE="2005-05-26 23:30" git-commit -m add -a &&
h_TEST=$(git rev-parse --verify HEAD)
echo The other day this did not work. >M &&
echo And then Bob told me how to fix it. >>M &&
echo OTHER >F &&
GIT_AUTHOR_DATE="2005-05-26 23:41" \
GIT_COMMITTER_DATE="2005-05-26 23:41" git-commit -F M -a &&
h_OTHER=$(git rev-parse --verify HEAD) &&
GIT_AUTHOR_DATE="2005-05-26 23:44" \
GIT_COMMITTER_DATE="2005-05-26 23:44" git-commit --amend &&
h_FIXED=$(git rev-parse --verify HEAD) &&
echo Merged initial commit and a later commit. >M &&
echo $h_TEST >.git/MERGE_HEAD &&
GIT_AUTHOR_DATE="2005-05-26 23:45" \
GIT_COMMITTER_DATE="2005-05-26 23:45" git-commit -F M &&
h_MERGED=$(git rev-parse --verify HEAD) &&
rm -f M'
cat >expect <<EOF
$Z $h_TEST $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000 commit (initial): add
$h_TEST $h_OTHER $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000 commit: The other day this did not work.
$h_OTHER $h_FIXED $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117151040 +0000 commit (amend): The other day this did not work.
$h_FIXED $h_MERGED $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117151100 +0000 commit (merge): Merged initial commit and a later commit.
EOF
test_expect_success \
'git-commit logged updates' \
"diff expect .git/logs/$m"
unset h_TEST h_OTHER h_FIXED h_MERGED
test_expect_success \
'git cat-file blob master:F (expect OTHER)' \
'test OTHER = $(git cat-file blob master:F)'
test_expect_success \
'git cat-file blob master@{2005-05-26 23:30}:F (expect TEST)' \
'test TEST = $(git cat-file blob "master@{2005-05-26 23:30}:F")'
test_expect_success \
'git cat-file blob master@{2005-05-26 23:42}:F (expect OTHER)' \
'test OTHER = $(git cat-file blob "master@{2005-05-26 23:42}:F")'
test_done