1 // SPDX-License-Identifier: GPL-2.0-only OR MIT 2 /* Copyright (c) 2025 Imagination Technologies Ltd. */ 3 4 #include "pvr_device.h" 5 6 #include <linux/errno.h> 7 #include <linux/stddef.h> 8 #include <linux/string.h> 9 #include <linux/types.h> 10 11 #include <kunit/test.h> 12 #include <kunit/visibility.h> 13 14 static void decode_gpuid_string(struct kunit *test) 15 { 16 const struct pvr_gpu_id bad_gpuid = { 0xdead, 0xbeef, 0xcafe, 0xface }; 17 const u64 packed_bad_gpuid = pvr_gpu_id_to_packed_bvnc(&bad_gpuid); 18 19 #define GPUID_TEST_CASE(str_, err_, value_) \ 20 do { \ 21 struct pvr_gpu_id _gpuid_out = bad_gpuid; \ 22 int _err; \ 23 _err = pvr_gpuid_decode_string(NULL, str_, &_gpuid_out); \ 24 KUNIT_EXPECT_EQ(test, _err, err_); \ 25 KUNIT_EXPECT_EQ(test, \ 26 pvr_gpu_id_to_packed_bvnc(&_gpuid_out), \ 27 value_); \ 28 } while (0) 29 30 #define GPUID_TEST_CASE_OK(str_, b_, v_, n_, c_) \ 31 GPUID_TEST_CASE(str_, 0, PVR_PACKED_BVNC(b_, v_, n_, c_)) 32 33 #define GPUID_TEST_CASE_INVAL(str_) \ 34 GPUID_TEST_CASE(str_, -EINVAL, packed_bad_gpuid) 35 36 GPUID_TEST_CASE_OK("12.34.56.78", 12, 34, 56, 78); 37 GPUID_TEST_CASE_OK("0.0.0.0", 0, 0, 0, 0); 38 39 GPUID_TEST_CASE_INVAL(""); 40 GPUID_TEST_CASE_INVAL("42.foobar-invalid.gpuid.bvnc"); 41 42 /* String longer than PVR_GPUID_STRING_MAX_LENGTH. */ 43 GPUID_TEST_CASE_INVAL("12.34.56.789012345678901234567890123456"); 44 45 /* Single value overflowing u16. */ 46 GPUID_TEST_CASE_INVAL("12.34.56.999999"); 47 48 /* Wrong number of parts and/or dots. */ 49 GPUID_TEST_CASE_INVAL("12.34.56.78.90"); 50 GPUID_TEST_CASE_INVAL("12.34.56..78"); 51 GPUID_TEST_CASE_INVAL("12.34..56"); 52 GPUID_TEST_CASE_INVAL("12.34.56"); 53 54 #undef GPUID_TEST_CASE_INVAL 55 #undef GPUID_TEST_CASE_OK 56 #undef GPUID_TEST_CASE 57 } 58 59 static struct kunit_case pvr_tests_cases[] = { 60 KUNIT_CASE(decode_gpuid_string), 61 {}, 62 }; 63 64 static struct kunit_suite pvr_tests_suite = { 65 .name = "pvr_tests", 66 .test_cases = pvr_tests_cases, 67 }; 68 kunit_test_suite(pvr_tests_suite); 69 70 MODULE_AUTHOR("Imagination Technologies Ltd."); 71 MODULE_LICENSE("Dual MIT/GPL"); 72 MODULE_DESCRIPTION("pvr kunit tests"); 73 MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING"); 74