git/t/t3432-rebase-fast-forward.sh
Denton Liu 2c9e125b27 t: teach test_cmp_rev to accept ! for not-equals
In the case where we are using test_cmp_rev() to report not-equals, we
write `! test_cmp_rev`. However, since test_cmp_rev() contains

	r1=$(git rev-parse --verify "$1") &&
	r2=$(git rev-parse --verify "$2") &&

`! test_cmp_rev` will succeed if any of the rev-parses fail. This
behavior is not desired. We want the rev-parses to _always_ be
successful.

Rewrite test_cmp_rev() to optionally accept "!" as the first argument to
do a not-equals comparison. Rewrite `! test_cmp_rev` to `test_cmp_rev !`
in all tests to take advantage of this new functionality.

Also, rewrite the rev-parse logic to end with a `|| return 1` instead of
&&-chaining into the rev-comparison logic. This makes it obvious to
future readers that we explicitly intend on returning early if either of
the rev-parses fail.

Signed-off-by: Denton Liu <liu.denton@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2019-11-21 09:41:51 +09:00

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#!/bin/sh
#
# Copyright (c) 2019 Denton Liu
#
test_description='ensure rebase fast-forwards commits when possible'
. ./test-lib.sh
test_expect_success setup '
test_commit A &&
test_commit B &&
test_commit C &&
test_commit D &&
git checkout -t -b side
'
test_rebase_same_head () {
status_n="$1" &&
shift &&
what_n="$1" &&
shift &&
cmp_n="$1" &&
shift &&
status_f="$1" &&
shift &&
what_f="$1" &&
shift &&
cmp_f="$1" &&
shift &&
test_rebase_same_head_ $status_n $what_n $cmp_n "" "$*" &&
test_rebase_same_head_ $status_f $what_f $cmp_f " --no-ff" "$*"
}
test_rebase_same_head_ () {
status="$1" &&
shift &&
what="$1" &&
shift &&
cmp="$1" &&
shift &&
flag="$1"
shift &&
test_expect_$status "git rebase$flag $* with $changes is $what with $cmp HEAD" "
oldhead=\$(git rev-parse HEAD) &&
test_when_finished 'git reset --hard \$oldhead' &&
git rebase$flag $* >stdout &&
if test $what = work
then
# Must check this case first, for 'is up to
# date, rebase forced[...]rewinding head' cases
test_i18ngrep 'rewinding head' stdout
elif test $what = noop
then
test_i18ngrep 'is up to date' stdout &&
test_i18ngrep ! 'rebase forced' stdout
elif test $what = noop-force
then
test_i18ngrep 'is up to date, rebase forced' stdout
fi &&
newhead=\$(git rev-parse HEAD) &&
if test $cmp = same
then
test_cmp_rev \$oldhead \$newhead
elif test $cmp = diff
then
test_cmp_rev ! \$oldhead \$newhead
fi
"
}
changes='no changes'
test_rebase_same_head success noop same success work same
test_rebase_same_head success noop same success noop-force same master
test_rebase_same_head success noop same success noop-force diff --onto B B
test_rebase_same_head success noop same success noop-force diff --onto B... B
test_rebase_same_head success noop same success noop-force same --onto master... master
test_rebase_same_head success noop same success noop-force same --keep-base master
test_rebase_same_head success noop same success noop-force same --keep-base
test_rebase_same_head success noop same success noop-force same --no-fork-point
test_rebase_same_head success noop same success noop-force same --keep-base --no-fork-point
test_rebase_same_head success noop same success work same --fork-point master
test_rebase_same_head success noop same success work diff --fork-point --onto B B
test_rebase_same_head success noop same success work diff --fork-point --onto B... B
test_rebase_same_head success noop same success work same --fork-point --onto master... master
test_rebase_same_head success noop same success work same --keep-base --keep-base master
test_expect_success 'add work same to side' '
test_commit E
'
changes='our changes'
test_rebase_same_head success noop same success work same
test_rebase_same_head success noop same success noop-force same master
test_rebase_same_head success noop same success noop-force diff --onto B B
test_rebase_same_head success noop same success noop-force diff --onto B... B
test_rebase_same_head success noop same success noop-force same --onto master... master
test_rebase_same_head success noop same success noop-force same --keep-base master
test_rebase_same_head success noop same success noop-force same --keep-base
test_rebase_same_head success noop same success noop-force same --no-fork-point
test_rebase_same_head success noop same success noop-force same --keep-base --no-fork-point
test_rebase_same_head success noop same success work same --fork-point master
test_rebase_same_head success noop same success work diff --fork-point --onto B B
test_rebase_same_head success noop same success work diff --fork-point --onto B... B
test_rebase_same_head success noop same success work same --fork-point --onto master... master
test_rebase_same_head success noop same success work same --fork-point --keep-base master
test_expect_success 'add work same to upstream' '
git checkout master &&
test_commit F &&
git checkout side
'
changes='our and their changes'
test_rebase_same_head success noop same success noop-force diff --onto B B
test_rebase_same_head success noop same success noop-force diff --onto B... B
test_rebase_same_head success noop same success work diff --onto master... master
test_rebase_same_head success noop same success work diff --keep-base master
test_rebase_same_head success noop same success work diff --keep-base
test_rebase_same_head failure work same success work diff --fork-point --onto B B
test_rebase_same_head failure work same success work diff --fork-point --onto B... B
test_rebase_same_head success noop same success work diff --fork-point --onto master... master
test_rebase_same_head success noop same success work diff --fork-point --keep-base master
test_done