#!/bin/sh
#
# Copyright (c) 2005 Jon Seymour
#

test_description='Tests git rev-list --topo-order functionality'

. ./test-lib.sh
. "$TEST_DIRECTORY"/t6000lib.sh # t6xxx specific functions

list_duplicates()
{
    "$@" | sort | uniq -d
}

date >path0
git update-index --add path0
save_tag tree git write-tree
on_committer_date "1971-08-16 00:00:00" hide_error save_tag root unique_commit root tree
on_committer_date "1971-08-16 00:00:01" save_tag l0 unique_commit l0 tree -p root
on_committer_date "1971-08-16 00:00:02" save_tag l1 unique_commit l1 tree -p l0
on_committer_date "1971-08-16 00:00:03" save_tag l2 unique_commit l2 tree -p l1
on_committer_date "1971-08-16 00:00:04" save_tag a0 unique_commit a0 tree -p l2
on_committer_date "1971-08-16 00:00:05" save_tag a1 unique_commit a1 tree -p a0
on_committer_date "1971-08-16 00:00:06" save_tag b1 unique_commit b1 tree -p a0
on_committer_date "1971-08-16 00:00:07" save_tag c1 unique_commit c1 tree -p b1
on_committer_date "1971-08-16 00:00:08" as_author foobar@example.com save_tag b2 unique_commit b2 tree -p b1
on_committer_date "1971-08-16 00:00:09" save_tag b3 unique_commit b3 tree -p b2
on_committer_date "1971-08-16 00:00:10" save_tag c2 unique_commit c2 tree -p c1 -p b2
on_committer_date "1971-08-16 00:00:11" save_tag c3 unique_commit c3 tree -p c2
on_committer_date "1971-08-16 00:00:12" save_tag a2 unique_commit a2 tree -p a1
on_committer_date "1971-08-16 00:00:13" save_tag a3 unique_commit a3 tree -p a2
on_committer_date "1971-08-16 00:00:14" save_tag b4 unique_commit b4 tree -p b3 -p a3
on_committer_date "1971-08-16 00:00:15" save_tag a4 unique_commit a4 tree -p a3 -p b4 -p c3
on_committer_date "1971-08-16 00:00:16" save_tag l3 unique_commit l3 tree -p a4
on_committer_date "1971-08-16 00:00:17" save_tag l4 unique_commit l4 tree -p l3
on_committer_date "1971-08-16 00:00:18" save_tag l5 unique_commit l5 tree -p l4
on_committer_date "1971-08-16 00:00:19" save_tag m1 unique_commit m1 tree -p a4 -p c3
on_committer_date "1971-08-16 00:00:20" save_tag m2 unique_commit m2 tree -p c3 -p a4
on_committer_date "1971-08-16 00:00:21" hide_error save_tag alt_root unique_commit alt_root tree
on_committer_date "1971-08-16 00:00:22" save_tag r0 unique_commit r0 tree -p alt_root
on_committer_date "1971-08-16 00:00:23" save_tag r1 unique_commit r1 tree -p r0
on_committer_date "1971-08-16 00:00:24" save_tag l5r1 unique_commit l5r1 tree -p l5 -p r1
on_committer_date "1971-08-16 00:00:25" save_tag r1l5 unique_commit r1l5 tree -p r1 -p l5


#
# note: as of 20/6, it isn't possible to create duplicate parents, so this
# can't be tested.
#
#on_committer_date "1971-08-16 00:00:20" save_tag m3 unique_commit m3 tree -p c3 -p a4 -p c3
hide_error save_tag e1 as_author e@example.com unique_commit e1 tree
save_tag e2 as_author e@example.com unique_commit e2 tree -p e1
save_tag f1 as_author f@example.com unique_commit f1 tree -p e1
save_tag e3 as_author e@example.com unique_commit e3 tree -p e2
save_tag f2 as_author f@example.com unique_commit f2 tree -p f1
save_tag e4 as_author e@example.com unique_commit e4 tree -p e3 -p f2
save_tag e5 as_author e@example.com unique_commit e5 tree -p e4
save_tag f3 as_author f@example.com unique_commit f3 tree -p f2
save_tag f4 as_author f@example.com unique_commit f4 tree -p f3
save_tag e6 as_author e@example.com unique_commit e6 tree -p e5 -p f4
save_tag f5 as_author f@example.com unique_commit f5 tree -p f4
save_tag f6 as_author f@example.com unique_commit f6 tree -p f5 -p e6
save_tag e7 as_author e@example.com unique_commit e7 tree -p e6
save_tag e8 as_author e@example.com unique_commit e8 tree -p e7
save_tag e9 as_author e@example.com unique_commit e9 tree -p e8
save_tag f7 as_author f@example.com unique_commit f7 tree -p f6
save_tag f8 as_author f@example.com unique_commit f8 tree -p f7
save_tag f9 as_author f@example.com unique_commit f9 tree -p f8
save_tag e10 as_author e@example.com unique_commit e1 tree -p e9 -p f8

hide_error save_tag g0 unique_commit g0 tree
save_tag g1 unique_commit g1 tree -p g0
save_tag h1 unique_commit g2 tree -p g0
save_tag g2 unique_commit g3 tree -p g1 -p h1
save_tag h2 unique_commit g4 tree -p g2
save_tag g3 unique_commit g5 tree -p g2
save_tag g4 unique_commit g6 tree -p g3 -p h2

git update-ref HEAD $(tag l5)

test_output_expect_success 'rev-list has correct number of entries' 'git rev-list HEAD | wc -l | tr -d \" \"' <<EOF
19
EOF

test_output_expect_success 'simple topo order' 'git rev-list --topo-order  HEAD' <<EOF
l5
l4
l3
a4
c3
c2
c1
b4
a3
a2
a1
b3
b2
b1
a0
l2
l1
l0
root
EOF

test_output_expect_success 'two diamonds topo order (g6)' 'git rev-list --topo-order  g4' <<EOF
g4
h2
g3
g2
h1
g1
g0
EOF

test_output_expect_success 'multiple heads' 'git rev-list --topo-order a3 b3 c3' <<EOF
a3
a2
a1
c3
c2
c1
b3
b2
b1
a0
l2
l1
l0
root
EOF

test_output_expect_success 'multiple heads, prune at a1' 'git rev-list --topo-order a3 b3 c3 ^a1' <<EOF
a3
a2
c3
c2
c1
b3
b2
b1
EOF

test_output_expect_success 'multiple heads, prune at l1' 'git rev-list --topo-order a3 b3 c3 ^l1' <<EOF
a3
a2
a1
c3
c2
c1
b3
b2
b1
a0
l2
EOF

test_output_expect_success 'cross-epoch, head at l5, prune at l1' 'git rev-list --topo-order l5 ^l1' <<EOF
l5
l4
l3
a4
c3
c2
c1
b4
a3
a2
a1
b3
b2
b1
a0
l2
EOF

test_output_expect_success 'duplicated head arguments' 'git rev-list --topo-order l5 l5 ^l1' <<EOF
l5
l4
l3
a4
c3
c2
c1
b4
a3
a2
a1
b3
b2
b1
a0
l2
EOF

test_output_expect_success 'prune near topo' 'git rev-list --topo-order a4 ^c3' <<EOF
a4
b4
a3
a2
a1
b3
EOF

test_output_expect_success "head has no parent" 'git rev-list --topo-order  root' <<EOF
root
EOF

test_output_expect_success "two nodes - one head, one base" 'git rev-list --topo-order  l0' <<EOF
l0
root
EOF

test_output_expect_success "three nodes one head, one internal, one base" 'git rev-list --topo-order  l1' <<EOF
l1
l0
root
EOF

test_output_expect_success "linear prune l2 ^root" 'git rev-list --topo-order  l2 ^root' <<EOF
l2
l1
l0
EOF

test_output_expect_success "linear prune l2 ^l0" 'git rev-list --topo-order  l2 ^l0' <<EOF
l2
l1
EOF

test_output_expect_success "linear prune l2 ^l1" 'git rev-list --topo-order  l2 ^l1' <<EOF
l2
EOF

test_output_expect_success "linear prune l5 ^a4" 'git rev-list --topo-order  l5 ^a4' <<EOF
l5
l4
l3
EOF

test_output_expect_success "linear prune l5 ^l3" 'git rev-list --topo-order  l5 ^l3' <<EOF
l5
l4
EOF

test_output_expect_success "linear prune l5 ^l4" 'git rev-list --topo-order  l5 ^l4' <<EOF
l5
EOF

test_output_expect_success "max-count 10 - topo order" 'git rev-list --topo-order  --max-count=10 l5' <<EOF
l5
l4
l3
a4
c3
c2
c1
b4
a3
a2
EOF

test_output_expect_success "max-count 10 - non topo order" 'git rev-list --max-count=10 l5' <<EOF
l5
l4
l3
a4
b4
a3
a2
c3
c2
b3
EOF

test_output_expect_success '--max-age=c3, no --topo-order' "git rev-list --max-age=$(commit_date c3) l5" <<EOF
l5
l4
l3
a4
b4
a3
a2
c3
EOF

#
# this test fails on --topo-order - a fix is required
#
#test_output_expect_success '--max-age=c3, --topo-order' "git rev-list --topo-order --max-age=$(commit_date c3) l5" <<EOF
#l5
#l4
#l3
#a4
#c3
#b4
#a3
#a2
#EOF

test_output_expect_success 'one specified head reachable from another a4, c3, --topo-order' "list_duplicates git rev-list --topo-order a4 c3" <<EOF
EOF

test_output_expect_success 'one specified head reachable from another c3, a4, --topo-order' "list_duplicates git rev-list --topo-order c3 a4" <<EOF
EOF

test_output_expect_success 'one specified head reachable from another a4, c3, no --topo-order' "list_duplicates git rev-list a4 c3" <<EOF
EOF

test_output_expect_success 'one specified head reachable from another c3, a4, no --topo-order' "list_duplicates git rev-list c3 a4" <<EOF
EOF

test_output_expect_success 'graph with c3 and a4 parents of head' "list_duplicates git rev-list m1" <<EOF
EOF

test_output_expect_success 'graph with a4 and c3 parents of head' "list_duplicates git rev-list m2" <<EOF
EOF

test_expect_success "head ^head --topo-order" 'git rev-list --topo-order  a3 ^a3' <<EOF
EOF

test_expect_success "head ^head no --topo-order" 'git rev-list a3 ^a3' <<EOF
EOF

test_output_expect_success 'simple topo order (l5r1)' 'git rev-list --topo-order  l5r1' <<EOF
l5r1
r1
r0
alt_root
l5
l4
l3
a4
c3
c2
c1
b4
a3
a2
a1
b3
b2
b1
a0
l2
l1
l0
root
EOF

test_output_expect_success 'simple topo order (r1l5)' 'git rev-list --topo-order  r1l5' <<EOF
r1l5
l5
l4
l3
a4
c3
c2
c1
b4
a3
a2
a1
b3
b2
b1
a0
l2
l1
l0
root
r1
r0
alt_root
EOF

test_output_expect_success "don't print things unreachable from one branch" "git rev-list a3 ^b3 --topo-order" <<EOF
a3
a2
a1
EOF

test_output_expect_success "--topo-order a4 l3" "git rev-list --topo-order a4 l3" <<EOF
l3
a4
c3
c2
c1
b4
a3
a2
a1
b3
b2
b1
a0
l2
l1
l0
root
EOF

#
#

test_done