1// SPDX-License-Identifier: GPL-2.0
2/*
3 * KUnit tests for OF APIs
4 */
5#include <linux/module.h>
6#include <linux/of.h>
7
8#include <kunit/test.h>
9
10/*
11 * Test that the root node "/" can be found by path.
12 */
13static void of_dtb_root_node_found_by_path(struct kunit *test)
14{
15	struct device_node *np;
16
17	np = of_find_node_by_path("/");
18	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, np);
19	of_node_put(np);
20}
21
22/*
23 * Test that the 'of_root' global variable is always populated when DT code is
24 * enabled. Remove this test once of_root is removed from global access.
25 */
26static void of_dtb_root_node_populates_of_root(struct kunit *test)
27{
28	KUNIT_EXPECT_NOT_ERR_OR_NULL(test, of_root);
29}
30
31static struct kunit_case of_dtb_test_cases[] = {
32	KUNIT_CASE(of_dtb_root_node_found_by_path),
33	KUNIT_CASE(of_dtb_root_node_populates_of_root),
34	{}
35};
36
37static int of_dtb_test_init(struct kunit *test)
38{
39	if (!IS_ENABLED(CONFIG_OF_EARLY_FLATTREE))
40		kunit_skip(test, "requires CONFIG_OF_EARLY_FLATTREE");
41
42	return 0;
43}
44
45/*
46 * Test suite to confirm a DTB is loaded.
47 */
48static struct kunit_suite of_dtb_suite = {
49	.name = "of_dtb",
50	.test_cases = of_dtb_test_cases,
51	.init = of_dtb_test_init,
52};
53
54kunit_test_suites(
55	&of_dtb_suite,
56);
57MODULE_LICENSE("GPL");
58