tests: odb: move fake backend into its own file

The fake backend used by the test suite `odb::backend::nonrefreshing` is
useful to have some low-level tests for the ODB layer. As such, we move
the implementation into its own `backend_helpers` module.

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/odb/backend/backend_helpers.h b/tests/odb/backend/backend_helpers.h
new file mode 100644
index 000000000..04bd844b2
--- /dev/null
+++ b/tests/odb/backend/backend_helpers.h
@@ -0,0 +1,18 @@
+#include "git2/sys/odb_backend.h"
+
+typedef struct {
+	git_odb_backend parent;
+
+	git_error_code error_code;
+	git_oid oid;
+
+	int exists_calls;
+	int read_calls;
+	int read_header_calls;
+	int read_prefix_calls;
+} fake_backend;
+
+int build_fake_backend(
+	git_odb_backend **out,
+	git_error_code error_code,
+	const git_oid *oid);