drivers/hid/hid-uclogic-core-test.c

   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
  14 struct uclogic_raw_event_hook_test {
  15         u8 event[MAX_EVENT_SIZE];
  16         size_t size;
  17         bool expected;
  18 };
  19
  20 static 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
  31 static 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
  59 static void fake_work(struct work_struct *work)
  60 {
  61
  62 }
  63
  64 static 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
  98 static struct kunit_case hid_uclogic_core_test_cases[] = {
  99         KUNIT_CASE(hid_test_uclogic_exec_event_hook_test),
 100         {}
 101 };
 102
 103 static struct kunit_suite hid_uclogic_core_test_suite = {
 104         .name = "hid_uclogic_core_test",
 105         .test_cases = hid_uclogic_core_test_cases,
 106 };
 107
 108 kunit_test_suite(hid_uclogic_core_test_suite);
 109
 110 MODULE_DESCRIPTION("KUnit tests for the UC-Logic driver");
 111 MODULE_LICENSE("GPL");
 112 MODULE_AUTHOR("José Expósito <jose.exposito89@gmail.com>");