1 files changed, 31 insertions, 0 deletions
diff --git a/tests/io_mock.c b/tests/io_mock.c
new file mode 100644
index 000000000..4828e53ca
--- /dev/null
+++ b/tests/io_mock.c
@@ -0,0 +1,31 @@
+/*
+ * This file is part of the flashrom project.
+ *
+ * Copyright (C) 2021, Google Inc. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include "io_mock.h"
+
+static const struct io_mock *current_io = NULL;
+
+void io_mock_register(const struct io_mock *io)
+{
+	/* A test can either register its own mock open function or fallback_open_state. */
+	assert_true(io == NULL || io->iom_open == NULL || io->fallback_open_state == NULL);
+	current_io = io;
+}
+
+const struct io_mock *get_io(void)
+{
+	return current_io;
+}