#include #include #include START_TEST (test_large_bitmask) { // yeah, this isn't a public method but I wanted to unit test it to track // down a bug extern uint64_t bitmask(int numBits); uint64_t result = bitmask(32); fail_if(result != 0xffffffff); } END_TEST START_TEST (test_one_bit_not_swapped) { uint64_t data = 0x80; uint64_t result = get_bit_field(data, 0, 1, false); fail_if(result == 1); } END_TEST START_TEST (test_one_bit) { uint64_t data = 0x8000000000000000; uint64_t result = get_bit_field(data, 0, 1, false); fail_unless(result == 0x1, "First bit in 0x%llx was 0x%llx instead of 0x1", data, result); } END_TEST START_TEST (test_32_bit_parse) { uint64_t data = 0x0402574d555a0401; uint64_t result = get_bit_field(data, 16, 32, false); uint64_t expectedValue = 0x574d555a; fail_unless(result == expectedValue, "Field retrieved in 0x%llx was 0x%llx instead of 0x%llx", data, result, expectedValue); } END_TEST START_TEST (test_16_bit_parse) { uint64_t data = 0xF34DFCFF00000000; uint64_t result = get_bit_field(data, 16, 16, false); uint64_t expectedValue = 0xFCFF; fail_unless(result == expectedValue, "Field retrieved in 0x%llx was 0x%llx instead of 0x%llx", data, result, expectedValue); } END_TEST START_TEST (test_one_byte) { uint64_t data = 0xFA00000000000000; uint64_t result = get_bit_field(data, 0, 4, false); fail_unless(result == 0xF, "First 4 bits in 0x%llx was 0x%llx instead of 0xF", data, result); result = get_bit_field(data, 4, 4, false); fail_unless(result == 0xA, "First 4 bits in 0x%llx was 0x%llx instead of 0xA", data, result); result = get_bit_field(data, 0, 8, false); fail_unless(result == 0xFA, "All bits in 0x%llx were 0x%llx instead of 0x%llx", data, result, data); } END_TEST START_TEST (test_multi_byte) { uint64_t data = 0x12FA000000000000; uint64_t result = get_bit_field(data, 0, 4, false); fail_unless(result == 0x1, "First 4 bits in 0x%llx was 0x%llx instead of 0xF", (data >> 60) & 0xF, result); result = get_bit_field(data, 4, 4, false); fail_unless(result == 0x2, "Second 4 bits in 0x%llx was 0x%llx instead of 0xA", (data >> 56) & 0xF, result); result = get_bit_field(data, 8, 4, false); fail_unless(result == 0xF, "First 4 bits in 0x%llx was 0x%llx instead of 0x1", (data >> 52) & 0xF, result); result = get_bit_field(data, 12, 4, false); fail_unless(result == 0xA, "Second 4 bits in 0x%llx was 0x%llx instead of 0x2", (data >> 48) % 0xF, result); } END_TEST START_TEST (test_get_multi_byte) { uint64_t data = 0x12FA000000000000; uint64_t result = get_bit_field(data, 0, 9, false); ck_assert_int_eq(result, 0x25); } END_TEST START_TEST (test_get_off_byte_boundary) { uint64_t data = 0x000012FA00000000; uint64_t result = get_bit_field(data, 12, 8, false); ck_assert_int_eq(result, 0x01); } END_TEST START_TEST (test_set_field) { uint64_t data = 0; set_bit_field(&data, 1, 0, 1); uint64_t result = get_bit_field(data, 0, 1, false); ck_assert_int_eq(result, 0x1); data = 0; set_bit_field(&data, 1, 1, 1); result = get_bit_field(data, 1, 1, false); ck_assert_int_eq(result, 0x1); data = 0; set_bit_field(&data, 0xf, 3, 4); result = get_bit_field(data, 3, 4, false); ck_assert_int_eq(result, 0xf); } END_TEST START_TEST (test_set_doesnt_clobber_existing_data) { uint64_t data = 0xFFFC4DF300000000; set_bit_field(&data, 0x4fc8, 16, 16); uint64_t result = get_bit_field(data, 16, 16, false); fail_unless(result == 0x4fc8, "Field retrieved in 0x%llx was 0x%llx instead of 0x%x", data, result, 0xc84f); data = 0x8000000000000000; set_bit_field(&data, 1, 21, 1); fail_unless(data == 0x8000040000000000LLU, "Expected combined value 0x8000040000000000 but got 0x%llx%llx", data >> 32, data); } END_TEST START_TEST (test_set_off_byte_boundary) { uint64_t data = 0xFFFC4DF300000000; set_bit_field(&data, 0x12, 12, 8); uint64_t result = get_bit_field(data, 12, 12, false); ck_assert_int_eq(result,0x12d); } END_TEST START_TEST (test_set_odd_number_of_bits) { uint64_t data = 0xFFFC4DF300000000LLU; set_bit_field(&data, 0x12, 11, 5); uint64_t result = get_bit_field(data, 11, 5, false); fail_unless(result == 0x12, "Field set in 0x%llx%llx%llx%llx was 0x%llx instead of 0x%llx", data, result, 0x12); data = 0xFFFC4DF300000000LLU; set_bit_field(&data, 0x2, 11, 5); result = get_bit_field(data, 11, 5, false); fail_unless(result == 0x2, "Field set in 0x%llx%llx%llx%llx was 0x%llx instead of 0x%llx", data, result, 0x2); } END_TEST START_TEST(test_nth_byte) { uint64_t data = 0x00000000F34DFCFF; uint8_t result = nth_byte(data, 0); uint8_t expected = 0x0; ck_assert_int_eq(result, expected); result = nth_byte(data, 4); expected = 0xF3; ck_assert_int_eq(result, expected); result = nth_byte(data, 5); expected = 0x4D; ck_assert_int_eq(result, expected); result = nth_byte(data, 6); expected = 0xFC; ck_assert_int_eq(result, expected); result = nth_byte(data, 7); expected = 0xFF; ck_assert_int_eq(result, expected); } END_TEST Suite* bitfieldSuite(void) { Suite* s = suite_create("bitfield"); TCase *tc_core = tcase_create("core"); tcase_add_test(tc_core, test_large_bitmask); tcase_add_test(tc_core, test_one_bit); tcase_add_test(tc_core, test_one_bit_not_swapped); tcase_add_test(tc_core, test_one_byte); tcase_add_test(tc_core, test_16_bit_parse); tcase_add_test(tc_core, test_32_bit_parse); tcase_add_test(tc_core, test_multi_byte); tcase_add_test(tc_core, test_get_multi_byte); tcase_add_test(tc_core, test_get_off_byte_boundary); tcase_add_test(tc_core, test_set_field); tcase_add_test(tc_core, test_set_doesnt_clobber_existing_data); tcase_add_test(tc_core, test_set_off_byte_boundary); tcase_add_test(tc_core, test_set_odd_number_of_bits); tcase_add_test(tc_core, test_nth_byte); suite_add_tcase(s, tc_core); return s; } int main(void) { int numberFailed; Suite* s = bitfieldSuite(); SRunner *sr = srunner_create(s); // Don't fork so we can actually use gdb srunner_set_fork_status(sr, CK_NOFORK); srunner_run_all(sr, CK_NORMAL); numberFailed = srunner_ntests_failed(sr); srunner_free(sr); return (numberFailed == 0) ? 0 : 1; }