tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright © 2024 Intel Corporation
4 */
5
6#include <kunit/test.h>
7
8#include "xe_args.h"
9
10static void call_args_example(struct kunit *test)
11{
12#define foo X, Y, Z, Q
13#define bar COUNT_ARGS(foo)
14#define buz CALL_ARGS(COUNT_ARGS, foo)
15
16 KUNIT_EXPECT_EQ(test, bar, 1);
17 KUNIT_EXPECT_EQ(test, buz, 4);
18
19#undef foo
20#undef bar
21#undef buz
22}
23
24static void drop_first_arg_example(struct kunit *test)
25{
26#define foo X, Y, Z, Q
27#define bar CALL_ARGS(COUNT_ARGS, DROP_FIRST_ARG(foo))
28
29 KUNIT_EXPECT_EQ(test, bar, 3);
30
31#undef foo
32#undef bar
33}
34
35static void first_arg_example(struct kunit *test)
36{
37 int X = 1;
38
39#define foo X, Y, Z, Q
40#define bar FIRST_ARG(foo)
41
42 KUNIT_EXPECT_EQ(test, bar, X);
43 KUNIT_EXPECT_STREQ(test, __stringify(bar), "X");
44
45#undef foo
46#undef bar
47}
48
49static void last_arg_example(struct kunit *test)
50{
51 int Q = 1;
52
53#define foo X, Y, Z, Q
54#define bar LAST_ARG(foo)
55
56 KUNIT_EXPECT_EQ(test, bar, Q);
57 KUNIT_EXPECT_STREQ(test, __stringify(bar), "Q");
58
59#undef foo
60#undef bar
61}
62
63static void pick_arg_example(struct kunit *test)
64{
65 int Y = 1, Z = 2;
66
67#define foo X, Y, Z, Q
68#define bar PICK_ARG(2, foo)
69#define buz PICK_ARG3(foo)
70
71 KUNIT_EXPECT_EQ(test, bar, Y);
72 KUNIT_EXPECT_STREQ(test, __stringify(bar), "Y");
73 KUNIT_EXPECT_EQ(test, buz, Z);
74 KUNIT_EXPECT_STREQ(test, __stringify(buz), "Z");
75
76#undef foo
77#undef bar
78#undef buz
79}
80
81static void sep_comma_example(struct kunit *test)
82{
83#define foo(f) f(X) f(Y) f(Z) f(Q)
84#define bar DROP_FIRST_ARG(foo(ARGS_SEP_COMMA __stringify))
85#define buz CALL_ARGS(COUNT_ARGS, DROP_FIRST_ARG(foo(ARGS_SEP_COMMA)))
86
87 static const char * const a[] = { bar };
88
89 KUNIT_EXPECT_STREQ(test, a[0], "X");
90 KUNIT_EXPECT_STREQ(test, a[1], "Y");
91 KUNIT_EXPECT_STREQ(test, a[2], "Z");
92 KUNIT_EXPECT_STREQ(test, a[3], "Q");
93
94 KUNIT_EXPECT_EQ(test, buz, 4);
95
96#undef foo
97#undef bar
98#undef buz
99}
100
101#define NO_ARGS
102#define FOO_ARGS X, Y, Z, Q
103#define MAX_ARGS -1, -2, -3, -4, -5, -6, -7, -8, -9, -10, -11, -12
104
105static void count_args_test(struct kunit *test)
106{
107 int count;
108
109 /* COUNT_ARGS() counts to 12 */
110
111 count = COUNT_ARGS();
112 KUNIT_EXPECT_EQ(test, count, 0);
113
114 count = COUNT_ARGS(1);
115 KUNIT_EXPECT_EQ(test, count, 1);
116
117 count = COUNT_ARGS(a, b, c, d, e);
118 KUNIT_EXPECT_EQ(test, count, 5);
119
120 count = COUNT_ARGS(a, b, c, d, e, f, g, h, i, j, k, l);
121 KUNIT_EXPECT_EQ(test, count, 12);
122
123 /* COUNT_ARGS() does not expand params */
124
125 count = COUNT_ARGS(NO_ARGS);
126 KUNIT_EXPECT_EQ(test, count, 1);
127
128 count = COUNT_ARGS(FOO_ARGS);
129 KUNIT_EXPECT_EQ(test, count, 1);
130}
131
132static void call_args_test(struct kunit *test)
133{
134 int count;
135
136 count = CALL_ARGS(COUNT_ARGS, NO_ARGS);
137 KUNIT_EXPECT_EQ(test, count, 0);
138 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, NO_ARGS), 0);
139 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, FOO_ARGS), 4);
140 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, FOO_ARGS, FOO_ARGS), 8);
141 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, MAX_ARGS), 12);
142}
143
144static void drop_first_arg_test(struct kunit *test)
145{
146 int Y = -2, Z = -3, Q = -4;
147 int a[] = { DROP_FIRST_ARG(FOO_ARGS) };
148
149 KUNIT_EXPECT_EQ(test, DROP_FIRST_ARG(0, -1), -1);
150 KUNIT_EXPECT_EQ(test, DROP_FIRST_ARG(DROP_FIRST_ARG(0, -1, -2)), -2);
151
152 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, DROP_FIRST_ARG(FOO_ARGS)), 3);
153 KUNIT_EXPECT_EQ(test, DROP_FIRST_ARG(DROP_FIRST_ARG(DROP_FIRST_ARG(FOO_ARGS))), -4);
154 KUNIT_EXPECT_EQ(test, a[0], -2);
155 KUNIT_EXPECT_EQ(test, a[1], -3);
156 KUNIT_EXPECT_EQ(test, a[2], -4);
157
158#define foo DROP_FIRST_ARG(FOO_ARGS)
159#define bar DROP_FIRST_ARG(DROP_FIRST_ARG(FOO_ARGS))
160#define buz DROP_FIRST_ARG(DROP_FIRST_ARG(DROP_FIRST_ARG(FOO_ARGS)))
161
162 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, foo), 3);
163 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, bar), 2);
164 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, buz), 1);
165 KUNIT_EXPECT_STREQ(test, __stringify(buz), "Q");
166
167#undef foo
168#undef bar
169#undef buz
170}
171
172static void first_arg_test(struct kunit *test)
173{
174 int X = -1;
175 int a[] = { FIRST_ARG(FOO_ARGS) };
176
177 KUNIT_EXPECT_EQ(test, FIRST_ARG(-1, -2), -1);
178
179 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, FIRST_ARG(FOO_ARGS)), 1);
180 KUNIT_EXPECT_EQ(test, FIRST_ARG(FOO_ARGS), -1);
181 KUNIT_EXPECT_EQ(test, a[0], -1);
182 KUNIT_EXPECT_STREQ(test, __stringify(FIRST_ARG(FOO_ARGS)), "X");
183}
184
185static void last_arg_test(struct kunit *test)
186{
187 int Q = -4;
188 int a[] = { LAST_ARG(FOO_ARGS) };
189
190 KUNIT_EXPECT_EQ(test, LAST_ARG(-1, -2), -2);
191
192 KUNIT_EXPECT_EQ(test, CALL_ARGS(COUNT_ARGS, LAST_ARG(FOO_ARGS)), 1);
193 KUNIT_EXPECT_EQ(test, LAST_ARG(FOO_ARGS), -4);
194 KUNIT_EXPECT_EQ(test, a[0], -4);
195 KUNIT_EXPECT_STREQ(test, __stringify(LAST_ARG(FOO_ARGS)), "Q");
196
197 KUNIT_EXPECT_EQ(test, LAST_ARG(MAX_ARGS), -12);
198 KUNIT_EXPECT_STREQ(test, __stringify(LAST_ARG(MAX_ARGS)), "-12");
199}
200
201static struct kunit_case args_tests[] = {
202 KUNIT_CASE(count_args_test),
203 KUNIT_CASE(call_args_example),
204 KUNIT_CASE(call_args_test),
205 KUNIT_CASE(drop_first_arg_example),
206 KUNIT_CASE(drop_first_arg_test),
207 KUNIT_CASE(first_arg_example),
208 KUNIT_CASE(first_arg_test),
209 KUNIT_CASE(last_arg_example),
210 KUNIT_CASE(last_arg_test),
211 KUNIT_CASE(pick_arg_example),
212 KUNIT_CASE(sep_comma_example),
213 {}
214};
215
216static struct kunit_suite args_test_suite = {
217 .name = "args",
218 .test_cases = args_tests,
219};
220
221kunit_test_suite(args_test_suite);