rev-list --min-parents,--max-parents: doc, test and completion

This also adds test for "--merges" and "--no-merges" which we did not
have so far.

Signed-off-by: Michael J Gruber <git@drmicha.warpmail.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 106 insertions, 1 deletions

diff --git a/t/t6009-rev-list-parent.sh b/t/t6009-rev-list-parent.sh
index 0f0e457..fc89d6d 100755
--- a/t/t6009-rev-list-parent.sh
+++ b/t/t6009-rev-list-parent.sh
@@ -1,9 +1,17 @@
 #!/bin/sh
 
-test_description='properly cull all ancestors'
+test_description='ancestor culling and limiting by parent number'
 
 . ./test-lib.sh
 
+check_revlist () {
+	rev_list_args="$1" &&
+	shift &&
+	git rev-parse "$@" >expect &&
+	git rev-list $rev_list_args --all >actual &&
+	test_cmp expect actual
+}
+
 test_expect_success setup '
 
 	touch file &&
@@ -28,4 +36,101 @@ test_expect_success 'one is ancestor of others and should not be shown' '
 
 '
 
+test_expect_success 'setup roots, merges and octopuses' '
+
+	git checkout --orphan newroot &&
+	test_commit five &&
+	git checkout -b sidebranch two &&
+	test_commit six &&
+	git checkout -b anotherbranch three &&
+	test_commit seven &&
+	git checkout -b yetanotherbranch four &&
+	test_commit eight &&
+	git checkout master &&
+	test_merge normalmerge newroot &&
+	test_tick &&
+	git merge -m tripus sidebranch anotherbranch &&
+	git tag tripus &&
+	git checkout -b tetrabranch normalmerge &&
+	test_tick &&
+	git merge -m tetrapus sidebranch anotherbranch yetanotherbranch &&
+	git tag tetrapus &&
+	git checkout master
+'
+
+test_expect_success 'rev-list roots' '
+
+	check_revlist "--max-parents=0" one five
+'
+
+test_expect_success 'rev-list no merges' '
+
+	check_revlist "--max-parents=1" one eight seven six five four three two &&
+	check_revlist "--no-merges" one eight seven six five four three two
+'
+
+test_expect_success 'rev-list no octopuses' '
+
+	check_revlist "--max-parents=2" one normalmerge eight seven six five four three two
+'
+
+test_expect_success 'rev-list no roots' '
+
+	check_revlist "--min-parents=1" tetrapus tripus normalmerge eight seven six four three two
+'
+
+test_expect_success 'rev-list merges' '
+
+	check_revlist "--min-parents=2" tetrapus tripus normalmerge &&
+	check_revlist "--merges" tetrapus tripus normalmerge
+'
+
+test_expect_success 'rev-list octopus' '
+
+	check_revlist "--min-parents=3" tetrapus tripus
+'
+
+test_expect_success 'rev-list ordinary commits' '
+
+	check_revlist "--min-parents=1 --max-parents=1" eight seven six four three two
+'
+
+test_expect_success 'rev-list --merges --no-merges yields empty set' '
+
+	check_revlist "--min-parents=2 --no-merges" &&
+	check_revlist "--merges --no-merges" &&
+	check_revlist "--no-merges --merges"
+'
+
+test_expect_success 'rev-list override and infinities' '
+
+	check_revlist "--min-parents=2 --max-parents=1 --max-parents=3" tripus normalmerge &&
+	check_revlist "--min-parents=1 --min-parents=2 --max-parents=7" tetrapus tripus normalmerge &&
+	check_revlist "--min-parents=2 --max-parents=8" tetrapus tripus normalmerge &&
+	check_revlist "--min-parents=2 --max-parents=-1" tetrapus tripus normalmerge &&
+	check_revlist "--min-parents=2 --no-max-parents" tetrapus tripus normalmerge &&
+	check_revlist "--max-parents=0 --min-parents=1 --no-min-parents" one five
+'
+
+test_expect_success 'set up dodecapus' '
+
+	for i in 1 2 3 4 5 6 7 8 9 10 11
+	do
+		git checkout -b root$i five || return
+		test_commit $i || return
+	done &&
+	git checkout master &&
+	test_tick &&
+	git merge -m dodecapus root{1,2,3,4,5,6,7,8,9,10,11} &&
+	git tag dodecapus
+'
+
+test_expect_success 'test with dodecapus' '
+
+	check_revlist "--min-parents=4" dodecapus tetrapus &&
+	check_revlist "--min-parents=8" dodecapus &&
+	check_revlist "--min-parents=12" dodecapus &&
+	check_revlist "--min-parents=13" &&
+	check_revlist "--min-parents=4 --max-parents=11" tetrapus
+'
 test_done