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1// SPDX-License-Identifier: GPL-2.0-or-later
2//
3// self-id-sequence-helper-test.c - An application of Kunit to test helpers of self ID sequence.
4//
5// Copyright (c) 2024 Takashi Sakamoto
6
7#include <kunit/test.h>
8
9#include "phy-packet-definitions.h"
10
11static void test_self_id_sequence_enumerator_valid(struct kunit *test)
12{
13 static const u32 valid_sequences[] = {
14 0x00000000,
15 0x00000001, 0x00800000,
16 0x00000001, 0x00800001, 0x00900000,
17 0x00000000,
18 };
19 struct self_id_sequence_enumerator enumerator;
20 const u32 *entry;
21 unsigned int quadlet_count;
22
23 enumerator.cursor = valid_sequences;
24 enumerator.quadlet_count = ARRAY_SIZE(valid_sequences);
25
26 entry = self_id_sequence_enumerator_next(&enumerator, &quadlet_count);
27 KUNIT_EXPECT_PTR_EQ(test, entry, &valid_sequences[0]);
28 KUNIT_EXPECT_EQ(test, quadlet_count, 1);
29 KUNIT_EXPECT_EQ(test, enumerator.quadlet_count, 6);
30
31 entry = self_id_sequence_enumerator_next(&enumerator, &quadlet_count);
32 KUNIT_EXPECT_PTR_EQ(test, entry, &valid_sequences[1]);
33 KUNIT_EXPECT_EQ(test, quadlet_count, 2);
34 KUNIT_EXPECT_EQ(test, enumerator.quadlet_count, 4);
35
36 entry = self_id_sequence_enumerator_next(&enumerator, &quadlet_count);
37 KUNIT_EXPECT_PTR_EQ(test, entry, &valid_sequences[3]);
38 KUNIT_EXPECT_EQ(test, quadlet_count, 3);
39 KUNIT_EXPECT_EQ(test, enumerator.quadlet_count, 1);
40
41 entry = self_id_sequence_enumerator_next(&enumerator, &quadlet_count);
42 KUNIT_EXPECT_PTR_EQ(test, entry, &valid_sequences[6]);
43 KUNIT_EXPECT_EQ(test, quadlet_count, 1);
44 KUNIT_EXPECT_EQ(test, enumerator.quadlet_count, 0);
45
46 entry = self_id_sequence_enumerator_next(&enumerator, &quadlet_count);
47 KUNIT_EXPECT_EQ(test, PTR_ERR(entry), -ENODATA);
48}
49
50static void test_self_id_sequence_enumerator_invalid(struct kunit *test)
51{
52 static const u32 invalid_sequences[] = {
53 0x00000001,
54 };
55 struct self_id_sequence_enumerator enumerator;
56 const u32 *entry;
57 unsigned int count;
58
59 enumerator.cursor = invalid_sequences;
60 enumerator.quadlet_count = ARRAY_SIZE(invalid_sequences);
61
62 entry = self_id_sequence_enumerator_next(&enumerator, &count);
63 KUNIT_EXPECT_EQ(test, PTR_ERR(entry), -EPROTO);
64}
65
66static void test_self_id_sequence_get_port_status(struct kunit *test)
67{
68 static const u32 expected[] = {
69 0x000000e5,
70 0x00839e79,
71 0x0091e79d,
72 0x00a279e4,
73 };
74 u32 quadlets [] = {
75 0x00000001,
76 0x00800001,
77 0x00900001,
78 0x00a00000,
79 };
80 enum phy_packet_self_id_port_status port_status[28];
81 unsigned int port_capacity;
82 unsigned int port_index;
83
84 KUNIT_ASSERT_EQ(test, ARRAY_SIZE(expected), ARRAY_SIZE(quadlets));
85
86 // With an extra port.
87 port_capacity = self_id_sequence_get_port_capacity(ARRAY_SIZE(expected)) + 1;
88 KUNIT_ASSERT_EQ(test, port_capacity, ARRAY_SIZE(port_status));
89
90 for (port_index = 0; port_index < port_capacity; ++port_index) {
91 port_status[port_index] =
92 self_id_sequence_get_port_status(expected, ARRAY_SIZE(expected), port_index);
93 self_id_sequence_set_port_status(quadlets, ARRAY_SIZE(quadlets), port_index,
94 port_status[port_index]);
95 }
96
97 // Self ID zero.
98 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[0]);
99 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[1]);
100 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[2]);
101
102 // Self ID one.
103 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[3]);
104 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[4]);
105 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[5]);
106 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[6]);
107 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[7]);
108 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[8]);
109 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[9]);
110 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[10]);
111
112 // Self ID two.
113 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[11]);
114 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[12]);
115 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[13]);
116 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[14]);
117 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[15]);
118 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[16]);
119 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[17]);
120 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[18]);
121
122 // Self ID three.
123 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[19]);
124 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[20]);
125 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[21]);
126 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[22]);
127 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[23]);
128 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_CHILD, port_status[24]);
129 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_PARENT, port_status[25]);
130 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NCONN, port_status[26]);
131
132 // Our of order.
133 KUNIT_EXPECT_EQ(test, PHY_PACKET_SELF_ID_PORT_STATUS_NONE, port_status[27]);
134
135 KUNIT_EXPECT_MEMEQ(test, quadlets, expected, sizeof(expected));
136}
137
138static struct kunit_case self_id_sequence_helper_test_cases[] = {
139 KUNIT_CASE(test_self_id_sequence_enumerator_valid),
140 KUNIT_CASE(test_self_id_sequence_enumerator_invalid),
141 KUNIT_CASE(test_self_id_sequence_get_port_status),
142 {}
143};
144
145static struct kunit_suite self_id_sequence_helper_test_suite = {
146 .name = "self-id-sequence-helper",
147 .test_cases = self_id_sequence_helper_test_cases,
148};
149kunit_test_suite(self_id_sequence_helper_test_suite);
150
151MODULE_DESCRIPTION("Unit test suite for helpers of self ID sequence");
152MODULE_LICENSE("GPL");