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#!/bin/sh
#
# Copyright (c) 2010 Will Palmer
#

test_description='git merge-tree'
. ./test-lib.sh

git config merge.conflictstyle merge # TODO: use the default

test_expect_success setup '
	test_commit "initial" "initial-file" "initial"
'

test_expect_success 'file add A, !B' '
	git reset --hard initial &&
	test_commit "add-a-not-b" "ONE" "AAA" &&
	git merge-tree initial initial add-a-not-b >actual &&
	cat >expected <<EXPECTED &&
added in remote
  their  100644 $(git rev-parse HEAD:ONE) ONE
@@ -0,0 +1 @@
+AAA
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file add !A, B' '
	git reset --hard initial &&
	test_commit "add-not-a-b" "ONE" "AAA" &&
	git merge-tree initial add-not-a-b initial >actual &&
	test_must_be_empty actual
'

test_expect_success 'file add A, B (same)' '
	git reset --hard initial &&
	test_commit "add-a-b-same-A" "ONE" "AAA" &&
	git reset --hard initial &&
	test_commit "add-a-b-same-B" "ONE" "AAA" &&
	git merge-tree initial add-a-b-same-A add-a-b-same-B >actual &&
	test_must_be_empty actual
'

test_expect_success 'file add A, B (different)' '
	git reset --hard initial &&
	test_commit "add-a-b-diff-A" "ONE" "AAA" &&
	git reset --hard initial &&
	test_commit "add-a-b-diff-B" "ONE" "BBB" &&
	git merge-tree initial add-a-b-diff-A add-a-b-diff-B >actual &&
	cat >expected <<EXPECTED &&
added in both
  our    100644 $(git rev-parse add-a-b-diff-A:ONE) ONE
  their  100644 $(git rev-parse add-a-b-diff-B:ONE) ONE
@@ -1 +1,5 @@
+<<<<<<< .our
 AAA
+=======
+BBB
+>>>>>>> .their
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file change A, !B' '
	git reset --hard initial &&
	test_commit "change-a-not-b" "initial-file" "BBB" &&
	git merge-tree initial change-a-not-b initial >actual &&
	test_must_be_empty actual
'

test_expect_success 'file change !A, B' '
	git reset --hard initial &&
	test_commit "change-not-a-b" "initial-file" "BBB" &&
	git merge-tree initial initial change-not-a-b >actual &&
	cat >expected <<EXPECTED &&
merged
  result 100644 $(git rev-parse change-a-not-b:initial-file) initial-file
  our    100644 $(git rev-parse initial:initial-file       ) initial-file
@@ -1 +1 @@
-initial
+BBB
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file change A, B (same)' '
	git reset --hard initial &&
	test_commit "change-a-b-same-A" "initial-file" "AAA" &&
	git reset --hard initial &&
	test_commit "change-a-b-same-B" "initial-file" "AAA" &&
	git merge-tree initial change-a-b-same-A change-a-b-same-B >actual &&
	test_must_be_empty actual
'

test_expect_success 'file change A, B (different)' '
	git reset --hard initial &&
	test_commit "change-a-b-diff-A" "initial-file" "AAA" &&
	git reset --hard initial &&
	test_commit "change-a-b-diff-B" "initial-file" "BBB" &&
	git merge-tree initial change-a-b-diff-A change-a-b-diff-B >actual &&
	cat >expected <<EXPECTED &&
changed in both
  base   100644 $(git rev-parse initial:initial-file          ) initial-file
  our    100644 $(git rev-parse change-a-b-diff-A:initial-file) initial-file
  their  100644 $(git rev-parse change-a-b-diff-B:initial-file) initial-file
@@ -1 +1,5 @@
+<<<<<<< .our
 AAA
+=======
+BBB
+>>>>>>> .their
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file change A, B (mixed)' '
	git reset --hard initial &&
	test_commit "change-a-b-mix-base" "ONE" "
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA
AAA" &&
	test_commit "change-a-b-mix-A" "ONE" \
		"$(sed -e "1{s/AAA/BBB/;}" -e "10{s/AAA/BBB/;}" <ONE)" &&
	git reset --hard change-a-b-mix-base &&
	test_commit "change-a-b-mix-B" "ONE" \
		"$(sed -e "1{s/AAA/BBB/;}" -e "10{s/AAA/CCC/;}" <ONE)" &&
	git merge-tree change-a-b-mix-base change-a-b-mix-A change-a-b-mix-B \
		>actual &&

	cat >expected <<EXPECTED &&
changed in both
  base   100644 $(git rev-parse change-a-b-mix-base:ONE) ONE
  our    100644 $(git rev-parse change-a-b-mix-A:ONE   ) ONE
  their  100644 $(git rev-parse change-a-b-mix-B:ONE   ) ONE
@@ -7,7 +7,11 @@
 AAA
 AAA
 AAA
+<<<<<<< .our
 BBB
+=======
+CCC
+>>>>>>> .their
 AAA
 AAA
 AAA
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file remove A, !B' '
	git reset --hard initial &&
	test_commit "rm-a-not-b-base" "ONE" "AAA" &&
	git rm ONE &&
	git commit -m "rm-a-not-b" &&
	git tag "rm-a-not-b" &&
	git merge-tree rm-a-not-b-base rm-a-not-b rm-a-not-b-base >actual &&
	test_must_be_empty actual
'

test_expect_success 'file remove !A, B' '
	git reset --hard initial &&
	test_commit "rm-not-a-b-base" "ONE" "AAA" &&
	git rm ONE &&
	git commit -m "rm-not-a-b" &&
	git tag "rm-not-a-b" &&
	git merge-tree rm-a-not-b-base rm-a-not-b-base rm-a-not-b >actual &&
	cat >expected <<EXPECTED &&
removed in remote
  base   100644 $(git rev-parse rm-a-not-b-base:ONE) ONE
  our    100644 $(git rev-parse rm-a-not-b-base:ONE) ONE
@@ -1 +0,0 @@
-AAA
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file remove A, B (same)' '
	git reset --hard initial &&
	test_commit "rm-a-b-base" "ONE" "AAA" &&
	git rm ONE &&
	git commit -m "rm-a-b" &&
	git tag "rm-a-b" &&
	git merge-tree rm-a-b-base rm-a-b rm-a-b >actual &&
	test_must_be_empty actual
'

test_expect_success 'file change A, remove B' '
	git reset --hard initial &&
	test_commit "change-a-rm-b-base" "ONE" "AAA" &&
	test_commit "change-a-rm-b-A" "ONE" "BBB" &&
	git reset --hard change-a-rm-b-base &&
	git rm ONE &&
	git commit -m "change-a-rm-b-B" &&
	git tag "change-a-rm-b-B" &&
	git merge-tree change-a-rm-b-base change-a-rm-b-A change-a-rm-b-B \
		>actual &&
	cat >expected <<EXPECTED &&
removed in remote
  base   100644 $(git rev-parse change-a-rm-b-base:ONE) ONE
  our    100644 $(git rev-parse change-a-rm-b-A:ONE   ) ONE
@@ -1 +0,0 @@
-BBB
EXPECTED

	test_cmp expected actual
'

test_expect_success 'file remove A, change B' '
	git reset --hard initial &&
	test_commit "rm-a-change-b-base" "ONE" "AAA" &&

	git rm ONE &&
	git commit -m "rm-a-change-b-A" &&
	git tag "rm-a-change-b-A" &&
	git reset --hard rm-a-change-b-base &&
	test_commit "rm-a-change-b-B" "ONE" "BBB" &&
	git merge-tree rm-a-change-b-base rm-a-change-b-A rm-a-change-b-B \
		>actual &&
	cat >expected <<EXPECTED &&
removed in local
  base   100644 $(git rev-parse rm-a-change-b-base:ONE) ONE
  their  100644 $(git rev-parse rm-a-change-b-B:ONE   ) ONE
EXPECTED
	test_cmp expected actual
'

test_expect_success 'tree add A, B (same)' '
	git reset --hard initial &&
	mkdir sub &&
	test_commit "add sub/file" "sub/file" "file" add-tree-A &&
	git merge-tree initial add-tree-A add-tree-A >actual &&
	test_must_be_empty actual
'

test_expect_success 'tree add A, B (different)' '
	git reset --hard initial &&
	mkdir sub &&
	test_commit "add sub/file" "sub/file" "AAA" add-tree-a-b-A &&
	git reset --hard initial &&
	mkdir sub &&
	test_commit "add sub/file" "sub/file" "BBB" add-tree-a-b-B &&
	git merge-tree initial add-tree-a-b-A add-tree-a-b-B >actual &&
	cat >expect <<-EOF &&
	added in both
	  our    100644 $(git rev-parse add-tree-a-b-A:sub/file) sub/file
	  their  100644 $(git rev-parse add-tree-a-b-B:sub/file) sub/file
	@@ -1 +1,5 @@
	+<<<<<<< .our
	 AAA
	+=======
	+BBB
	+>>>>>>> .their
	EOF
	test_cmp expect actual
'

test_expect_success 'tree unchanged A, removed B' '
	git reset --hard initial &&
	mkdir sub &&
	test_commit "add sub/file" "sub/file" "AAA" tree-remove-b-initial &&
	git rm sub/file &&
	test_tick &&
	git commit -m "remove sub/file" &&
	git tag tree-remove-b-B &&
	git merge-tree tree-remove-b-initial tree-remove-b-initial tree-remove-b-B >actual &&
	cat >expect <<-EOF &&
	removed in remote
	  base   100644 $(git rev-parse tree-remove-b-initial:sub/file) sub/file
	  our    100644 $(git rev-parse tree-remove-b-initial:sub/file) sub/file
	@@ -1 +0,0 @@
	-AAA
	EOF
	test_cmp expect actual
'

test_expect_success 'turn file to tree' '
	git reset --hard initial &&
	rm initial-file &&
	mkdir initial-file &&
	test_commit "turn-file-to-tree" "initial-file/ONE" "CCC" &&
	git merge-tree initial initial turn-file-to-tree >actual &&
	cat >expect <<-EOF &&
	added in remote
	  their  100644 $(git rev-parse turn-file-to-tree:initial-file/ONE) initial-file/ONE
	@@ -0,0 +1 @@
	+CCC
	removed in remote
	  base   100644 $(git rev-parse initial:initial-file) initial-file
	  our    100644 $(git rev-parse initial:initial-file) initial-file
	@@ -1 +0,0 @@
	-initial
	EOF
	test_cmp expect actual
'

test_expect_success 'turn tree to file' '
	git reset --hard initial &&
	mkdir dir &&
	test_commit "add-tree" "dir/path" "AAA" &&
	test_commit "add-another-tree" "dir/another" "BBB" &&
	rm -fr dir &&
	test_commit "make-file" "dir" "CCC" &&
	git merge-tree add-tree add-another-tree make-file >actual &&
	cat >expect <<-EOF &&
	removed in remote
	  base   100644 $(git rev-parse add-tree:dir/path) dir/path
	  our    100644 $(git rev-parse add-tree:dir/path) dir/path
	@@ -1 +0,0 @@
	-AAA
	added in remote
	  their  100644 $(git rev-parse make-file:dir) dir
	@@ -0,0 +1 @@
	+CCC
	EOF
	test_cmp expect actual
'

test_done
debug log:

solving f21ccaf0a6 ...
found f21ccaf0a6 in https://public-inbox.org/git/20210609192842.696646-8-felipe.contreras@gmail.com/
found e59601e5fe in https://80x24.org/mirrors/git.git
preparing index
index prepared:
100755 e59601e5fe9b75eda9f4daaa801c1ed6c40d6fc6	t/t4300-merge-tree.sh

applying [1/1] https://public-inbox.org/git/20210609192842.696646-8-felipe.contreras@gmail.com/
diff --git a/t/t4300-merge-tree.sh b/t/t4300-merge-tree.sh
index e59601e5fe..f21ccaf0a6 100755

Checking patch t/t4300-merge-tree.sh...
Applied patch t/t4300-merge-tree.sh cleanly.

index at:
100755 f21ccaf0a6e78a80a0eaff08c809efcfd2327d21	t/t4300-merge-tree.sh

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