[thirdparty/git.git] / t / t6111-rev-list-treesame.sh

#!/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-lib.sh

note () {
	git tag "$1"
}

unnote () {
	git name-rev --tags --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
Commit	Line	Data
abdea96e KB	1	#!/bin/sh
	2	#
	3	# ,---E--. H----------. marks !TREESAME parent paths
	4	# / \ / \*
	5	# A--B---D--F-G---------K-L-M
	6	# \ /* \ /
	7	# `-C-' `-I-J
	8	#
	9	# A creates "file", B and F change it.
	10	# Odd merge G takes the old version from B.
	11	# I changes it, but J reverts it, so K is TREESAME to both parents.
	12	# H and L both change "file", and M merges those changes.
	13
	14	test_description='TREESAME and limiting'
	15
1550bb6e	16	GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
334afbc7 JS	17	export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
334afbc7 JS	18
abdea96e KB	19	. ./test-lib.sh
	20
	21	note () {
	22	git tag "$1"
	23	}
	24
	25	unnote () {
2ece6ad2	26	git name-rev --tags --stdin \| sed -e "s\|$OID_REGEX (tags/\([^)]*\))\([ ]\)\|\1\2\|g"
abdea96e KB	27	}
	28
	29	test_expect_success setup '
	30	test_commit "Initial file" file "Hi there" A &&
	31	git branch other-branch &&
	32
	33	test_commit "file=Hello" file "Hello" B &&
	34	git branch third-branch &&
	35
	36	git checkout other-branch &&
	37	test_commit "Added other" other "Hello" C &&
	38
1550bb6e	39	git checkout main &&
abdea96e KB	40	test_merge D other-branch &&
	41
	42	git checkout third-branch &&
	43	test_commit "Third file" third "Nothing" E &&
	44
1550bb6e	45	git checkout main &&
abdea96e KB	46	test_commit "file=Blah" file "Blah" F &&
	47
	48	test_tick && git merge --no-commit third-branch &&
	49	git checkout third-branch file &&
	50	git commit &&
	51	note G &&
	52	git branch fiddler-branch &&
	53
	54	git checkout -b part2-branch &&
	55	test_commit "file=Part 2" file "Part 2" H &&
	56
	57	git checkout fiddler-branch &&
	58	test_commit "Bad commit" file "Silly" I &&
	59
	60	test_tick && git revert I && note J &&
	61
1550bb6e	62	git checkout main &&
abdea96e	63	test_tick && git merge --no-ff fiddler-branch &&
99094a7a	64	note K &&
abdea96e KB	65
	66	test_commit "file=Part 1" file "Part 1" L &&
	67
	68	test_tick && test_must_fail git merge part2-branch &&
	69	test_commit M file "Parts 1+2"
	70	'
	71
abdea96e KB	72	check_outcome () {
	73	outcome=$1
	74	shift
e16f434a JH	75
	76	case "$1" in
	77	"(")
	78	FMT="%P %H \| %s"
	79	munge_actual="
	80	s/^\([^ ]\) \([^ ]\) .*/(\1)\2/
	81	s/ //g
	82	s/()//
	83	"
	84	;;
	85	*)
	86	FMT="%H \| %s"
	87	munge_actual="s/^\([^ ]\) ./\1/"
	88	;;
	89	esac &&
	90	printf "%s\n" $1 >expect &&
	91	shift
	92
abdea96e KB	93	param="$*" &&
	94	test_expect_$outcome "log $param" '
	95	git log --format="$FMT" $param \|
	96	unnote >actual &&
e16f434a	97	sed -e "$munge_actual" <actual >check &&
5ca812a1	98	test_cmp expect check
abdea96e KB	99	'
	100	}
	101
	102	check_result () {
	103	check_outcome success "$@"
	104	}
	105
	106	# Odd merge G drops a change in F. Important that G is listed in all
	107	# except the most basic list. Achieving this means normal merge D will also be
	108	# shown in normal full-history, as we can't distinguish unless we do a
	109	# simplification pass. After simplification, D is dropped but G remains.
53e38358 KB	110	# Also, merge simplification of G should not drop the parent B that the default
53e38358 KB	111	# simple history follows.
abdea96e	112	check_result 'M L K J I H G F E D C B A'
e16f434a	113	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'
abdea96e KB	114	check_result 'M H L K J I G E F D C B A' --topo-order
abdea96e KB	115	check_result 'M L H B A' -- file
53e38358	116	check_result '(LH)M (B)L (B)H (A)B A' --parents -- file
d0af663e	117	check_result 'M L J I H G F D B A' --full-history -- file
53e38358	118	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
9c129eab	119	check_result '(LH)M (G)H (J)L (I)J (G)I (FB)G (B)F (A)B A' --simplify-merges -- file
abdea96e KB	120	check_result 'M L K G F D B A' --first-parent
	121	check_result 'M L G F B A' --first-parent -- file
	122
	123	# Check that odd merge G remains shown when F is the bottom.
	124	check_result 'M L K J I H G E' F..M
	125	check_result 'M H L K J I G E' F..M --topo-order
	126	check_result 'M L H' F..M -- file
53e38358	127	check_result '(LH)M (B)L (B)H' --parents F..M -- file
d0af663e	128	check_result 'M L J I H G' F..M --full-history -- file
53e38358	129	check_result '(LH)M (K)L (GJ)K (I)J (G)I (G)H (FB)G' F..M --full-history --parents -- file
9c129eab	130	check_result '(LH)M (G)H (J)L (I)J (G)I (FB)G' F..M --simplify-merges -- file
abdea96e	131	check_result 'M L K J I H G' F..M --ancestry-path
d0af663e	132	check_result 'M L J I H G' F..M --ancestry-path -- file
53e38358 KB	133	check_result '(LH)M (K)L (GJ)K (I)J (G)I (G)H (FE)G' F..M --ancestry-path --parents -- file
53e38358 KB	134	check_result '(LH)M (G)H (J)L (I)J (G)I (FE)G' F..M --ancestry-path --simplify-merges -- file
abdea96e KB	135	check_result 'M L K G' F..M --first-parent
	136	check_result 'M L G' F..M --first-parent -- file
	137
	138	# Note that G is pruned when E is the bottom, even if it's the same commit list
	139	# If we want history since E, then we're quite happy to ignore G that took E.
	140	check_result 'M L K J I H G' E..M --ancestry-path
4d826608	141	check_result 'M L J I H' E..M --ancestry-path -- file
bf3418b0	142	check_result '(LH)M (K)L (EJ)K (I)J (E)I (E)H' E..M --ancestry-path --parents -- file
4d826608	143	check_result '(LH)M (E)H (J)L (I)J (E)I' E..M --ancestry-path --simplify-merges -- file
abdea96e KB	144
	145	# Should still be able to ignore I-J branch in simple log, despite limiting
	146	# to G.
	147	check_result 'M L K J I H' G..M
	148	check_result 'M H L K J I' G..M --topo-order
141efdba KB	149	check_result 'M L H' G..M -- file
141efdba KB	150	check_result '(LH)M (G)L (G)H' G..M --parents -- file
abdea96e KB	151	check_result 'M L J I H' G..M --full-history -- file
	152	check_result 'M L K J I H' G..M --full-history --parents -- file
	153	check_result 'M H L J I' G..M --simplify-merges -- file
	154	check_result 'M L K J I H' G..M --ancestry-path
	155	check_result 'M L J I H' G..M --ancestry-path -- file
	156	check_result 'M L K J I H' G..M --ancestry-path --parents -- file
	157	check_result 'M H L J I' G..M --ancestry-path --simplify-merges -- file
	158
	159	# B..F should be able to simplify the merge D from irrelevant side branch C.
	160	# Default log should also be free to follow B-D, and ignore C.
	161	# But --full-history shouldn't drop D on its own - without simplification,
	162	# we can't decide if the merge from INTERESTING commit C was sensible.
	163	check_result 'F D C' B..F
141efdba KB	164	check_result 'F' B..F -- file
141efdba KB	165	check_result '(B)F' B..F --parents -- file
d0af663e	166	check_result 'F D' B..F --full-history -- file
53e38358 KB	167	check_result '(D)F (BA)D' B..F --full-history --parents -- file
53e38358 KB	168	check_result '(B)F' B..F --simplify-merges -- file
abdea96e	169	check_result 'F D' B..F --ancestry-path
4d826608	170	check_result 'F' B..F --ancestry-path -- file
bf3418b0	171	check_result 'F' B..F --ancestry-path --parents -- file
4d826608	172	check_result 'F' B..F --ancestry-path --simplify-merges -- file
abdea96e KB	173	check_result 'F D' B..F --first-parent
	174	check_result 'F' B..F --first-parent -- file
	175
	176	# E...F should be equivalent to E F ^B, and be able to drop D as above.
141efdba KB	177	check_result 'F' E F ^B -- file # includes D
141efdba KB	178	check_result 'F' E...F -- file # includes D
abdea96e KB	179
	180	# Any sort of full history of C..F should show D, as it's the connection to C,
	181	# and it differs from it.
	182	check_result 'F D B' C..F
	183	check_result 'F B' C..F -- file
53e38358	184	check_result '(B)F (A)B' C..F --parents -- file
d0af663e	185	check_result 'F D B' C..F --full-history -- file
53e38358 KB	186	check_result '(D)F (BC)D (A)B' C..F --full-history --parents -- file
53e38358 KB	187	check_result '(D)F (BC)D (A)B' C..F --simplify-merges -- file
abdea96e	188	check_result 'F D' C..F --ancestry-path
d0af663e	189	check_result 'F D' C..F --ancestry-path -- file
abdea96e KB	190	check_result 'F D' C..F --ancestry-path --parents -- file
	191	check_result 'F D' C..F --ancestry-path --simplify-merges -- file
	192	check_result 'F D B' C..F --first-parent
	193	check_result 'F B' C..F --first-parent -- file
	194
	195
	196	test_done