git diff-tree -C --find-copies-harder -r N4^ N4 >actual &&
compare_diff_raw expect actual'
+test_expect_success \
+ 'N: copy root directory by tree hash' \
+ 'cat >expect <<-\EOF &&
+ :100755 000000 f1fb5da718392694d0076d677d6d0e364c79b0bc 0000000000000000000000000000000000000000 D file3/newf
+ :100644 000000 7123f7f44e39be127c5eb701e5968176ee9d78b1 0000000000000000000000000000000000000000 D file3/oldf
+ EOF
+ root=$(git rev-parse refs/heads/branch^0^{tree}) &&
+ cat >input <<-INPUT_END &&
+ commit refs/heads/N6
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ copy root directory by tree hash
+ COMMIT
+
+ from refs/heads/branch^0
+ M 040000 $root ""
+ INPUT_END
+ git fast-import <input &&
+ git diff-tree -C --find-copies-harder -r N4 N6 >actual &&
+ compare_diff_raw expect actual'
+
test_expect_success \
'N: modify copied tree' \
'cat >expect <<-\EOF &&
git diff-tree -C --find-copies-harder -r N5^^ N5 >actual &&
compare_diff_raw expect actual'
+test_expect_success \
+ 'N: reject foo/ syntax' \
+ 'subdir=$(git rev-parse refs/heads/branch^0:file2) &&
+ test_must_fail git fast-import <<-INPUT_END
+ commit refs/heads/N5B
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ copy with invalid syntax
+ COMMIT
+
+ from refs/heads/branch^0
+ M 040000 $subdir file3/
+ INPUT_END'
+
+test_expect_success \
+ 'N: copy to root by id and modify' \
+ 'echo "hello, world" >expect.foo &&
+ echo hello >expect.bar &&
+ git fast-import <<-SETUP_END &&
+ commit refs/heads/N7
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ hello, tree
+ COMMIT
+
+ deleteall
+ M 644 inline foo/bar
+ data <<EOF
+ hello
+ EOF
+ SETUP_END
+
+ tree=$(git rev-parse --verify N7:) &&
+ git fast-import <<-INPUT_END &&
+ commit refs/heads/N8
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ copy to root by id and modify
+ COMMIT
+
+ M 040000 $tree ""
+ M 644 inline foo/foo
+ data <<EOF
+ hello, world
+ EOF
+ INPUT_END
+ git show N8:foo/foo >actual.foo &&
+ git show N8:foo/bar >actual.bar &&
+ test_cmp expect.foo actual.foo &&
+ test_cmp expect.bar actual.bar'
+
+test_expect_success \
+ 'N: extract subtree' \
+ 'branch=$(git rev-parse --verify refs/heads/branch^{tree}) &&
+ cat >input <<-INPUT_END &&
+ commit refs/heads/N9
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ extract subtree branch:newdir
+ COMMIT
+
+ M 040000 $branch ""
+ C "newdir" ""
+ INPUT_END
+ git fast-import <input &&
+ git diff --exit-code branch:newdir N9'
+
+test_expect_success \
+ 'N: modify subtree, extract it, and modify again' \
+ 'echo hello >expect.baz &&
+ echo hello, world >expect.qux &&
+ git fast-import <<-SETUP_END &&
+ commit refs/heads/N10
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ hello, tree
+ COMMIT
+
+ deleteall
+ M 644 inline foo/bar/baz
+ data <<EOF
+ hello
+ EOF
+ SETUP_END
+
+ tree=$(git rev-parse --verify N10:) &&
+ git fast-import <<-INPUT_END &&
+ commit refs/heads/N11
+ committer $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> $GIT_COMMITTER_DATE
+ data <<COMMIT
+ copy to root by id and modify
+ COMMIT
+
+ M 040000 $tree ""
+ M 100644 inline foo/bar/qux
+ data <<EOF
+ hello, world
+ EOF
+ R "foo" ""
+ C "bar/qux" "bar/quux"
+ INPUT_END
+ git show N11:bar/baz >actual.baz &&
+ git show N11:bar/qux >actual.qux &&
+ git show N11:bar/quux >actual.quux &&
+ test_cmp expect.baz actual.baz &&
+ test_cmp expect.qux actual.qux &&
+ test_cmp expect.qux actual.quux'
+
###
### series O
###