git/t/t3421-rebase-topology-linear.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
test_description='basic rebase topology tests'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-rebase.sh
# a---b---c
# \
# d---e
test_expect_success 'setup' '
test_commit a &&
test_commit b &&
test_commit c &&
git checkout b &&
test_commit d &&
test_commit e
'
test_run_rebase () {
result=$1
shift
test_expect_$result "simple rebase $*" "
reset_rebase &&
git rebase $* c e &&
test_cmp_rev c HEAD~2 &&
test_linear_range 'd e' c..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_expect_success 'setup branches and remote tracking' '
git tag -l >tags &&
for tag in $(cat tags)
do
git branch branch-$tag $tag || return 1
done &&
git remote add origin "file://$PWD" &&
git fetch origin
'
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* is no-op if upstream is an ancestor" "
reset_rebase &&
git rebase $* b e &&
test_cmp_rev e HEAD
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* -f rewrites even if upstream is an ancestor" "
reset_rebase &&
git rebase $* -f b e &&
test_cmp_rev ! e HEAD &&
test_cmp_rev b HEAD~2 &&
test_linear_range 'd e' b..
"
}
test_run_rebase success ''
test_run_rebase success --fork-point
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* -f rewrites even if remote upstream is an ancestor" "
reset_rebase &&
git rebase $* -f branch-b branch-e &&
test_cmp_rev ! branch-e origin/branch-e &&
test_cmp_rev branch-b HEAD~2 &&
test_linear_range 'd e' branch-b..
"
}
test_run_rebase success ''
test_run_rebase success --fork-point
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* fast-forwards from ancestor of upstream" "
reset_rebase &&
git rebase $* e b &&
test_cmp_rev e HEAD
"
}
test_run_rebase success ''
test_run_rebase success --fork-point
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
# f
# /
# a---b---c---g---h
# \
# d---gp--i
#
# gp = cherry-picked g
# h = reverted g
#
# Reverted patches are there for tests to be able to check if a commit
# that introduced the same change as another commit is
# dropped. Without reverted commits, we could get false positives
# because applying the patch succeeds, but simply results in no
# changes.
test_expect_success 'setup of linear history for range selection tests' '
git checkout c &&
test_commit g &&
revert h g &&
git checkout d &&
cherry_pick gp g &&
test_commit i &&
git checkout b &&
test_commit f
'
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* drops patches in upstream" "
reset_rebase &&
git rebase $* h i &&
test_cmp_rev h HEAD~2 &&
test_linear_range 'd i' h..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* can drop last patch if in upstream" "
reset_rebase &&
git rebase $* h gp &&
test_cmp_rev h HEAD^ &&
test_linear_range 'd' h..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --onto drops patches in upstream" "
reset_rebase &&
git rebase $* --onto f h i &&
test_cmp_rev f HEAD~2 &&
test_linear_range 'd i' f..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --onto does not drop patches in onto" "
reset_rebase &&
git rebase $* --onto h f i &&
test_cmp_rev h HEAD~3 &&
test_linear_range 'd gp i' h..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
# a---b---c---j!
# \
# d---k!--l
#
# ! = empty
test_expect_success 'setup of linear history for empty commit tests' '
git checkout c &&
make_empty j &&
git checkout d &&
make_empty k &&
test_commit l
'
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* drops empty commit" "
reset_rebase &&
git rebase $* c l &&
test_cmp_rev c HEAD~2 &&
test_linear_range 'd l' c..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --keep-empty" "
reset_rebase &&
git rebase $* --keep-empty c l &&
test_cmp_rev c HEAD~3 &&
test_linear_range 'd k l' c..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --keep-empty keeps empty even if already in upstream" "
reset_rebase &&
git rebase $* --keep-empty j l &&
test_cmp_rev j HEAD~3 &&
test_linear_range 'd k l' j..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase success --rebase-merges
# m
# /
# a---b---c---g
#
# x---y---bp
#
# bp = cherry-picked b
# m = reverted b
#
# Reverted patches are there for tests to be able to check if a commit
# that introduced the same change as another commit is
# dropped. Without reverted commits, we could get false positives
# because applying the patch succeeds, but simply results in no
# changes.
test_expect_success 'setup of linear history for test involving root' '
git checkout b &&
revert m b &&
git checkout --orphan disjoint &&
git rm -rf . &&
test_commit x &&
test_commit y &&
cherry_pick bp b
'
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --onto --root" "
reset_rebase &&
git rebase $* --onto c --root y &&
test_cmp_rev c HEAD~2 &&
test_linear_range 'x y' c..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* without --onto --root with disjoint history" "
reset_rebase &&
git rebase $* c y &&
test_cmp_rev c HEAD~2 &&
test_linear_range 'x y' c..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --onto --root drops patch in onto" "
reset_rebase &&
git rebase $* --onto m --root bp &&
test_cmp_rev m HEAD~2 &&
test_linear_range 'x y' m..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --onto --root with merge-base does not go to root" "
reset_rebase &&
git rebase $* --onto m --root g &&
test_cmp_rev m HEAD~2 &&
test_linear_range 'c g' m..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* without --onto --root with disjoint history drops patch in onto" "
reset_rebase &&
git rebase $* m bp &&
test_cmp_rev m HEAD~2 &&
test_linear_range 'x y' m..
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* --root on linear history is a no-op" "
reset_rebase &&
git rebase $* --root c &&
test_cmp_rev c HEAD
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase failure -p
test_run_rebase () {
result=$1
shift
test_expect_$result "rebase $* -f --root on linear history causes re-write" "
reset_rebase &&
git rebase $* -f --root c &&
test_cmp_rev ! a HEAD~2 &&
test_linear_range 'a b c' HEAD
"
}
test_run_rebase success ''
test_run_rebase success -m
test_run_rebase success -i
test_have_prereq !REBASE_P || test_run_rebase success -p
test_done