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git/t/t6019-rev-list-ancestry-path.sh
Kevin Bracey 4d826608e9 revision.c: discount side branches when computing TREESAME
Use the BOTTOM flag to define relevance for pruning. Relevant commits
are those that are !UNINTERESTING or BOTTOM, and this allows us to
identify irrelevant side branches (UNINTERESTING && !BOTTOM).

If a merge has relevant parents, and it is TREESAME to them, then do not
let irrelevant parents cause the merge to be treated as !TREESAME.

When considering simplification, don't always include all merges -
merges with exactly one relevant parent can be simplified, if TREESAME
according to the above rule.

These two changes greatly increase simplification in limited, pruned
revision lists.

Signed-off-by: Kevin Bracey <kevin@bracey.fi>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-05-16 11:51:10 -07:00

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#!/bin/sh
test_description='--ancestry-path'
# D---E-------F
# / \ \
# B---C---G---H---I---J
# / \
# A-------K---------------L--M
#
# D..M == E F G H I J K L M
# --ancestry-path D..M == E F H I J L M
#
# D..M -- M.t == M
# --ancestry-path D..M -- M.t == M
#
# F...I == F G H I
# --ancestry-path F...I == F H I
#
# G..M -- G.t == [nothing - was dropped in "-s ours" merge L]
# --ancestry-path G..M -- G.t == L
# --ancestry-path --simplify-merges G^..M -- G.t == G L
. ./test-lib.sh
test_merge () {
test_tick &&
git merge -s ours -m "$2" "$1" &&
git tag "$2"
}
test_expect_success setup '
test_commit A &&
test_commit B &&
test_commit C &&
test_commit D &&
test_commit E &&
test_commit F &&
git reset --hard C &&
test_commit G &&
test_merge E H &&
test_commit I &&
test_merge F J &&
git reset --hard A &&
test_commit K &&
test_merge J L &&
test_commit M
'
test_expect_success 'rev-list D..M' '
for c in E F G H I J K L M; do echo $c; done >expect &&
git rev-list --format=%s D..M |
sed -e "/^commit /d" |
sort >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list --ancestry-path D..M' '
for c in E F H I J L M; do echo $c; done >expect &&
git rev-list --ancestry-path --format=%s D..M |
sed -e "/^commit /d" |
sort >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list D..M -- M.t' '
echo M >expect &&
git rev-list --format=%s D..M -- M.t |
sed -e "/^commit /d" >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list --ancestry-path D..M -- M.t' '
echo M >expect &&
git rev-list --ancestry-path --format=%s D..M -- M.t |
sed -e "/^commit /d" >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list F...I' '
for c in F G H I; do echo $c; done >expect &&
git rev-list --format=%s F...I |
sed -e "/^commit /d" |
sort >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list --ancestry-path F...I' '
for c in F H I; do echo $c; done >expect &&
git rev-list --ancestry-path --format=%s F...I |
sed -e "/^commit /d" |
sort >actual &&
test_cmp expect actual
'
# G.t is dropped in an "-s ours" merge
test_expect_success 'rev-list G..M -- G.t' '
>expect &&
git rev-list --format=%s G..M -- G.t |
sed -e "/^commit /d" >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list --ancestry-path G..M -- G.t' '
echo L >expect &&
git rev-list --ancestry-path --format=%s G..M -- G.t |
sed -e "/^commit /d" >actual &&
test_cmp expect actual
'
test_expect_success 'rev-list --ancestry-path --simplify-merges G^..M -- G.t' '
for c in G L; do echo $c; done >expect &&
git rev-list --ancestry-path --simplify-merges --format=%s G^..M -- G.t |
sed -e "/^commit /d" |
sort >actual &&
test_cmp expect actual
'
# b---bc
# / \ /
# a X
# \ / \
# c---cb
#
# All refnames prefixed with 'x' to avoid confusion with the tags
# generated by test_commit on case-insensitive systems.
test_expect_success 'setup criss-cross' '
mkdir criss-cross &&
(cd criss-cross &&
git init &&
test_commit A &&
git checkout -b xb master &&
test_commit B &&
git checkout -b xc master &&
test_commit C &&
git checkout -b xbc xb -- &&
git merge xc &&
git checkout -b xcb xc -- &&
git merge xb &&
git checkout master)
'
# no commits in bc descend from cb
test_expect_success 'criss-cross: rev-list --ancestry-path cb..bc' '
(cd criss-cross &&
git rev-list --ancestry-path xcb..xbc > actual &&
test -z "$(cat actual)")
'
# no commits in repository descend from cb
test_expect_success 'criss-cross: rev-list --ancestry-path --all ^cb' '
(cd criss-cross &&
git rev-list --ancestry-path --all ^xcb > actual &&
test -z "$(cat actual)")
'
test_done