Merge branch 'nd/files-backend-git-dir'

The "submodule" specific field in the ref_store structure is
replaced with a more generic "gitdir" that can later be used also
when dealing with ref_store that represents the set of refs visible
from the other worktrees.

* nd/files-backend-git-dir: (28 commits)
  refs.h: add a note about sorting order of for_each_ref_*
  t1406: new tests for submodule ref store
  t1405: some basic tests on main ref store
  t/helper: add test-ref-store to test ref-store functions
  refs: delete pack_refs() in favor of refs_pack_refs()
  files-backend: avoid ref api targeting main ref store
  refs: new transaction related ref-store api
  refs: add new ref-store api
  refs: rename get_ref_store() to get_submodule_ref_store() and make it public
  files-backend: replace submodule_allowed check in files_downcast()
  refs: move submodule code out of files-backend.c
  path.c: move some code out of strbuf_git_path_submodule()
  refs.c: make get_main_ref_store() public and use it
  refs.c: kill register_ref_store(), add register_submodule_ref_store()
  refs.c: flatten get_ref_store() a bit
  refs: rename lookup_ref_store() to lookup_submodule_ref_store()
  refs.c: introduce get_main_ref_store()
  files-backend: remove the use of git_path()
  files-backend: add and use files_ref_path()
  files-backend: add and use files_reflog_path()
  ...

1 files changed, 129 insertions, 0 deletions

diff --git a/t/t1405-main-ref-store.sh b/t/t1405-main-ref-store.sh
new file mode 100755
index 0000000000..490521f8cb
--- /dev/null
+++ b/t/t1405-main-ref-store.sh
@@ -0,0 +1,129 @@
+#!/bin/sh
+
+test_description='test main ref store api'
+
+. ./test-lib.sh
+
+RUN="test-ref-store main"
+
+test_expect_success 'pack_refs(PACK_REFS_ALL | PACK_REFS_PRUNE)' '
+	test_commit one &&
+	N=`find .git/refs -type f | wc -l` &&
+	test "$N" != 0 &&
+	$RUN pack-refs 3 &&
+	N=`find .git/refs -type f | wc -l`
+'
+
+test_expect_success 'peel_ref(new-tag)' '
+	git rev-parse HEAD >expected &&
+	git tag -a -m new-tag new-tag HEAD &&
+	$RUN peel-ref refs/tags/new-tag >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'create_symref(FOO, refs/heads/master)' '
+	$RUN create-symref FOO refs/heads/master nothing &&
+	echo refs/heads/master >expected &&
+	git symbolic-ref FOO >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'delete_refs(FOO, refs/tags/new-tag)' '
+	git rev-parse FOO -- &&
+	git rev-parse refs/tags/new-tag -- &&
+	$RUN delete-refs 0 FOO refs/tags/new-tag &&
+	test_must_fail git rev-parse FOO -- &&
+	test_must_fail git rev-parse refs/tags/new-tag --
+'
+
+test_expect_success 'rename_refs(master, new-master)' '
+	git rev-parse master >expected &&
+	$RUN rename-ref refs/heads/master refs/heads/new-master &&
+	git rev-parse new-master >actual &&
+	test_cmp expected actual &&
+	test_commit recreate-master
+'
+
+test_expect_success 'for_each_ref(refs/heads/)' '
+	$RUN for-each-ref refs/heads/ | cut -c 42- >actual &&
+	cat >expected <<-\EOF &&
+	master 0x0
+	new-master 0x0
+	EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'for_each_ref() is sorted' '
+	$RUN for-each-ref refs/heads/ | cut -c 42- >actual &&
+	sort actual > expected &&
+	test_cmp expected actual
+'
+
+test_expect_success 'resolve_ref(new-master)' '
+	SHA1=`git rev-parse new-master` &&
+	echo "$SHA1 refs/heads/new-master 0x0" >expected &&
+	$RUN resolve-ref refs/heads/new-master 0 >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'verify_ref(new-master)' '
+	$RUN verify-ref refs/heads/new-master
+'
+
+test_expect_success 'for_each_reflog()' '
+	$RUN for-each-reflog | sort | cut -c 42- >actual &&
+	cat >expected <<-\EOF &&
+	HEAD 0x1
+	refs/heads/master 0x0
+	refs/heads/new-master 0x0
+	EOF
+	test_cmp expected actual
+'
+
+test_expect_success 'for_each_reflog_ent()' '
+	$RUN for-each-reflog-ent HEAD >actual &&
+	head -n1 actual | grep one &&
+	tail -n2 actual | head -n1 | grep recreate-master
+'
+
+test_expect_success 'for_each_reflog_ent_reverse()' '
+	$RUN for-each-reflog-ent-reverse HEAD >actual &&
+	head -n1 actual | grep recreate-master &&
+	tail -n2 actual | head -n1 | grep one
+'
+
+test_expect_success 'reflog_exists(HEAD)' '
+	$RUN reflog-exists HEAD
+'
+
+test_expect_success 'delete_reflog(HEAD)' '
+	$RUN delete-reflog HEAD &&
+	! test -f .git/logs/HEAD
+'
+
+test_expect_success 'create-reflog(HEAD)' '
+	$RUN create-reflog HEAD 1 &&
+	test -f .git/logs/HEAD
+'
+
+test_expect_success 'delete_ref(refs/heads/foo)' '
+	git checkout -b foo &&
+	FOO_SHA1=`git rev-parse foo` &&
+	git checkout --detach &&
+	test_commit bar-commit &&
+	git checkout -b bar &&
+	BAR_SHA1=`git rev-parse bar` &&
+	$RUN update-ref updating refs/heads/foo $BAR_SHA1 $FOO_SHA1 0 &&
+	echo $BAR_SHA1 >expected &&
+	git rev-parse refs/heads/foo >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'delete_ref(refs/heads/foo)' '
+	SHA1=`git rev-parse foo` &&
+	git checkout --detach &&
+	$RUN delete-ref msg refs/heads/foo $SHA1 0 &&
+	test_must_fail git rev-parse refs/heads/foo --
+'
+
+test_done