odb: add git_odb_foreach()

Go through each backend and list every objects that exists in
them. This allows fsck-like uses.

1 files changed, 36 insertions, 0 deletions

diff --git a/tests-clar/odb/foreach.c b/tests-clar/odb/foreach.c
new file mode 100644
index 000000000..6cb4faad2
--- /dev/null
+++ b/tests-clar/odb/foreach.c
@@ -0,0 +1,36 @@
+#include "clar_libgit2.h"
+#include "odb.h"
+#include "git2/odb_backend.h"
+#include "pack.h"
+
+static git_odb *_odb;
+static git_repository *_repo;
+static int nobj;
+
+void test_odb_foreach__initialize(void)
+{
+	cl_git_pass(git_repository_open(&_repo, cl_fixture("testrepo.git")));
+	git_repository_odb(&_odb, _repo);
+}
+
+void test_odb_foreach__cleanup(void)
+{
+	git_odb_free(_odb);
+	git_repository_free(_repo);
+}
+
+static int foreach_cb(git_oid *oid, void *data)
+{
+	GIT_UNUSED(data);
+	GIT_UNUSED(oid);
+
+	nobj++;
+
+	return 0;
+}
+
+void test_odb_foreach__foreach(void)
+{
+	cl_git_pass(git_odb_foreach(_odb, foreach_cb, NULL));
+	cl_assert(nobj == 1681);
+}