#!/bin/sh
#
# ,---E--. *H----------. * marks !TREESAME parent paths
# / \ / \*
# *A--*B---D--*F-*G---------K-*L-*M
# \ /* \ /
# `-C-' `-*I-*J
#
# A creates "file", B and F change it.
# Odd merge G takes the old version from B.
# I changes it, but J reverts it, so K is TREESAME to both parents.
# H and L both change "file", and M merges those changes.
test_description='TREESAME and limiting'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh
note () {
git tag "$1"
}
unnote () {
git name-rev --tags --annotate-stdin | \
sed -e "s|$OID_REGEX (tags/\([^)]*\))\([ ]\)|\1\2|g"
}
test_expect_success setup '
test_commit "Initial file" file "Hi there" A &&
git branch other-branch &&
test_commit "file=Hello" file "Hello" B &&
git branch third-branch &&
git checkout other-branch &&
test_commit "Added other" other "Hello" C &&
git checkout main &&
test_merge D other-branch &&
git checkout third-branch &&
test_commit "Third file" third "Nothing" E &&
git checkout main &&
test_commit "file=Blah" file "Blah" F &&
test_tick && git merge --no-commit third-branch &&
git checkout third-branch file &&
git commit &&
note G &&
git branch fiddler-branch &&
git checkout -b part2-branch &&
test_commit "file=Part 2" file "Part 2" H &&
git checkout fiddler-branch &&
test_commit "Bad commit" file "Silly" I &&
test_tick && git revert I && note J &&
git checkout main &&
test_tick && git merge --no-ff fiddler-branch &&
note K &&
test_commit "file=Part 1" file "Part 1" L &&
test_tick && test_must_fail git merge part2-branch &&
test_commit M file "Parts 1+2"
'
check_outcome () {
outcome=$1
shift
case "$1" in
*"("*)
FMT="%P %H | %s"
munge_actual="
s/^\([^ ]*\) \([^ ]*\) .*/(\1)\2/
s/ //g
s/()//
"
;;
*)
FMT="%H | %s"
munge_actual="s/^\([^ ]*\) .*/\1/"
;;
esac &&
printf "%s\n" $1 >expect &&
shift
param="$*" &&
test_expect_$outcome "log $param" '
git log --format="$FMT" $param |
unnote >actual &&
sed -e "$munge_actual" <actual >check &&
test_cmp expect check
'
}
check_result () {
check_outcome success "$@"
}
# Odd merge G drops a change in F. Important that G is listed in all
# except the most basic list. Achieving this means normal merge D will also be
# shown in normal full-history, as we can't distinguish unless we do a
# simplification pass. After simplification, D is dropped but G remains.
# Also, merge simplification of G should not drop the parent B that the default
# simple history follows.
check_result 'M L K J I H G F E D C B A'
check_result '(LH)M (K)L (GJ)K (I)J (G)I (G)H (FE)G (D)F (B)E (BC)D (A)C (A)B A'
check_result 'M H L K J I G E F D C B A' --topo-order
check_result 'M L H B A' -- file
check_result '(LH)M (B)L (B)H (A)B A' --parents -- file
check_result 'M L J I H G F D B A' --full-history -- file
check_result '(LH)M (K)L (GJ)K (I)J (G)I (G)H (FB)G (D)F (BA)D (A)B A' --full-history --parents -- file
check_result '(LH)M (G)H (J)L (I)J (G)I (FB)G (B)F (A)B A' --simplify-merges -- file
check_result 'M L K G F D B A' --first-parent
check_result 'M L G F B A' --first-parent -- file
# Check that odd merge G remains shown when F is the bottom.
check_result 'M L K J I H G E' F..M
check_result 'M H L K J I G E' F..M --topo-order
check_result 'M L H' F..M -- file
check_result '(LH)M (B)L (B)H' --parents F..M -- file
check_result 'M L J I H G' F..M --full-history -- file
check_result '(LH)M (K)L (GJ)K (I)J (G)I (G)H (FB)G' F..M --full-history --parents -- file
check_result '(LH)M (G)H (J)L (I)J (G)I (FB)G' F..M --simplify-merges -- file
check_result 'M L K J I H G' F..M --ancestry-path
check_result 'M L J I H G' F..M --ancestry-path -- file
check_result '(LH)M (K)L (GJ)K (I)J (G)I (G)H (FE)G' F..M --ancestry-path --parents -- file
check_result '(LH)M (G)H (J)L (I)J (G)I (FE)G' F..M --ancestry-path --simplify-merges -- file
check_result 'M L K G' F..M --first-parent
check_result 'M L G' F..M --first-parent -- file
# Note that G is pruned when E is the bottom, even if it's the same commit list
# If we want history since E, then we're quite happy to ignore G that took E.
check_result 'M L K J I H G' E..M --ancestry-path
check_result 'M L J I H' E..M --ancestry-path -- file
check_result '(LH)M (K)L (EJ)K (I)J (E)I (E)H' E..M --ancestry-path --parents -- file
check_result '(LH)M (E)H (J)L (I)J (E)I' E..M --ancestry-path --simplify-merges -- file
# Should still be able to ignore I-J branch in simple log, despite limiting
# to G.
check_result 'M L K J I H' G..M
check_result 'M H L K J I' G..M --topo-order
check_result 'M L H' G..M -- file
check_result '(LH)M (G)L (G)H' G..M --parents -- file
check_result 'M L J I H' G..M --full-history -- file
check_result 'M L K J I H' G..M --full-history --parents -- file
check_result 'M H L J I' G..M --simplify-merges -- file
check_result 'M L K J I H' G..M --ancestry-path
check_result 'M L J I H' G..M --ancestry-path -- file
check_result 'M L K J I H' G..M --ancestry-path --parents -- file
check_result 'M H L J I' G..M --ancestry-path --simplify-merges -- file
# B..F should be able to simplify the merge D from irrelevant side branch C.
# Default log should also be free to follow B-D, and ignore C.
# But --full-history shouldn't drop D on its own - without simplification,
# we can't decide if the merge from INTERESTING commit C was sensible.
check_result 'F D C' B..F
check_result 'F' B..F -- file
check_result '(B)F' B..F --parents -- file
check_result 'F D' B..F --full-history -- file
check_result '(D)F (BA)D' B..F --full-history --parents -- file
check_result '(B)F' B..F --simplify-merges -- file
check_result 'F D' B..F --ancestry-path
check_result 'F' B..F --ancestry-path -- file
check_result 'F' B..F --ancestry-path --parents -- file
check_result 'F' B..F --ancestry-path --simplify-merges -- file
check_result 'F D' B..F --first-parent
check_result 'F' B..F --first-parent -- file
# E...F should be equivalent to E F ^B, and be able to drop D as above.
check_result 'F' E F ^B -- file # includes D
check_result 'F' E...F -- file # includes D
# Any sort of full history of C..F should show D, as it's the connection to C,
# and it differs from it.
check_result 'F D B' C..F
check_result 'F B' C..F -- file
check_result '(B)F (A)B' C..F --parents -- file
check_result 'F D B' C..F --full-history -- file
check_result '(D)F (BC)D (A)B' C..F --full-history --parents -- file
check_result '(D)F (BC)D (A)B' C..F --simplify-merges -- file
check_result 'F D' C..F --ancestry-path
check_result 'F D' C..F --ancestry-path -- file
check_result 'F D' C..F --ancestry-path --parents -- file
check_result 'F D' C..F --ancestry-path --simplify-merges -- file
check_result 'F D B' C..F --first-parent
check_result 'F B' C..F --first-parent -- file
test_done
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