1// SPDX-License-Identifier: GPL-2.0+
  2
  3/*
  4 *  HID driver for UC-Logic devices not fully compliant with HID standard
  5 *
  6 *  Copyright (c) 2022 José Expósito <jose.exposito89@gmail.com>
  7 */
  8
  9#include <kunit/test.h>
 10#include "./hid-uclogic-params.h"
 11
 12#define MAX_EVENT_SIZE 12
 13
 14struct uclogic_raw_event_hook_test {
 15	u8 event[MAX_EVENT_SIZE];
 16	size_t size;
 17	bool expected;
 18};
 19
 20static struct uclogic_raw_event_hook_test hook_events[] = {
 21	{
 22		.event = { 0xA1, 0xB2, 0xC3, 0xD4 },
 23		.size = 4,
 24	},
 25	{
 26		.event = { 0x1F, 0x2E, 0x3D, 0x4C, 0x5B, 0x6A },
 27		.size = 6,
 28	},
 29};
 30
 31static struct uclogic_raw_event_hook_test test_events[] = {
 32	{
 33		.event = { 0xA1, 0xB2, 0xC3, 0xD4 },
 34		.size = 4,
 35		.expected = true,
 36	},
 37	{
 38		.event = { 0x1F, 0x2E, 0x3D, 0x4C, 0x5B, 0x6A },
 39		.size = 6,
 40		.expected = true,
 41	},
 42	{
 43		.event = { 0xA1, 0xB2, 0xC3 },
 44		.size = 3,
 45		.expected = false,
 46	},
 47	{
 48		.event = { 0xA1, 0xB2, 0xC3, 0xD4, 0x00 },
 49		.size = 5,
 50		.expected = false,
 51	},
 52	{
 53		.event = { 0x2E, 0x3D, 0x4C, 0x5B, 0x6A, 0x1F },
 54		.size = 6,
 55		.expected = false,
 56	},
 57};
 58
 59static void fake_work(struct work_struct *work)
 60{
 61
 62}
 63
 64static void hid_test_uclogic_exec_event_hook_test(struct kunit *test)
 65{
 66	struct uclogic_params p = {0, };
 67	struct uclogic_raw_event_hook *filter;
 68	bool res;
 69	int n;
 70
 71	/* Initialize the list of events to hook */
 72	p.event_hooks = kunit_kzalloc(test, sizeof(*p.event_hooks), GFP_KERNEL);
 73	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, p.event_hooks);
 74	INIT_LIST_HEAD(&p.event_hooks->list);
 75
 76	for (n = 0; n < ARRAY_SIZE(hook_events); n++) {
 77		filter = kunit_kzalloc(test, sizeof(*filter), GFP_KERNEL);
 78		KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filter);
 79
 80		filter->size = hook_events[n].size;
 81		filter->event = kunit_kzalloc(test, filter->size, GFP_KERNEL);
 82		KUNIT_ASSERT_NOT_ERR_OR_NULL(test, filter->event);
 83		memcpy(filter->event, &hook_events[n].event[0], filter->size);
 84
 85		INIT_WORK(&filter->work, fake_work);
 86
 87		list_add_tail(&filter->list, &p.event_hooks->list);
 88	}
 89
 90	/* Test uclogic_exec_event_hook() */
 91	for (n = 0; n < ARRAY_SIZE(test_events); n++) {
 92		res = uclogic_exec_event_hook(&p, &test_events[n].event[0],
 93					      test_events[n].size);
 94		KUNIT_ASSERT_EQ(test, res, test_events[n].expected);
 95	}
 96}
 97
 98static struct kunit_case hid_uclogic_core_test_cases[] = {
 99	KUNIT_CASE(hid_test_uclogic_exec_event_hook_test),
100	{}
101};
102
103static struct kunit_suite hid_uclogic_core_test_suite = {
104	.name = "hid_uclogic_core_test",
105	.test_cases = hid_uclogic_core_test_cases,
106};
107
108kunit_test_suite(hid_uclogic_core_test_suite);
109
110MODULE_DESCRIPTION("KUnit tests for the UC-Logic driver");
111MODULE_LICENSE("GPL");
112MODULE_AUTHOR("José Expósito <jose.exposito89@gmail.com>");