From 2d0ee36913a5e0f6c74beb5cdb9f25ea36ea9290 Mon Sep 17 00:00:00 2001 From: Jan Dabros Date: Mon, 20 Apr 2020 15:19:45 +0200 Subject: tests: Add lib/string-test test case Show a basic example of how unit testing can be applied for the coreboot project. Add a test harness for lib/string.c module. TEST=Install cmocka via appropriate command: sudo apt-get install -y libcmocka-dev sudo emerge dev-util/cmocka yum install libcmocka-devel * Build and run unit tests via `make unit-tests` * Check the output to see that tests passed. Signed-off-by: Jan Dabros Change-Id: Ibf5554d1e99a393721a66bdd35af0122c2e412c4 Reviewed-on: https://review.coreboot.org/c/coreboot/+/40538 Tested-by: build bot (Jenkins) Reviewed-by: Julius Werner Reviewed-by: Paul Fagerburg --- tests/lib/Makefile.inc | 20 +++++++++++++++++++ tests/lib/string-test.c | 53 +++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 73 insertions(+) create mode 100644 tests/lib/Makefile.inc create mode 100644 tests/lib/string-test.c (limited to 'tests/lib') diff --git a/tests/lib/Makefile.inc b/tests/lib/Makefile.inc new file mode 100644 index 0000000000..86ac323ab8 --- /dev/null +++ b/tests/lib/Makefile.inc @@ -0,0 +1,20 @@ +## +## This file is part of the coreboot project. +## +## This program is free software; you can redistribute it and/or modify +## it under the terms of the GNU General Public License as published by +## the Free Software Foundation; version 2 of the License. +## +## This program is distributed in the hope that it will be useful, +## but WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## + +# object filest should be under build/tests/ build/test/src/ build/test/run/ +# two examples - first should be simply string.c, second should use -wrap + +tests-y += string-test + +string-test-srcs += tests/lib/string-test.c +string-test-srcs += src/lib/string.c diff --git a/tests/lib/string-test.c b/tests/lib/string-test.c new file mode 100644 index 0000000000..210aabae4a --- /dev/null +++ b/tests/lib/string-test.c @@ -0,0 +1,53 @@ +#include +#include +#include +#include + +#include + +/* + * Important note: In every particular test, don't use any string-related + * functions other than function under test. We are linking against + * src/lib/string.c not the standard library. This is important for proper test + * isolation. One can use __builtin_xxx for many of the most simple str*() + * functions, when non-coreboot one is required. + */ + +struct strings_t { + char *str; + size_t size; +} strings[] = { + {"coreboot", 8}, + {"is\0very", 2}, /* strlen should be 2 because of the embedded \0 */ + {"nice\n", 5} +}; + +static void test_strlen_strings(void **state) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(strings); i++) + assert_int_equal(strings[i].size, strlen(strings[i].str)); +} + +static void test_strdup(void **state) +{ + char str[] = "Hello coreboot\n"; + char *duplicate; + + duplicate = strdup(str); + + /* There is a more suitable Cmocka's function 'assert_string_equal()', but it + is using strcmp() internally. */ + assert_int_equal(0, memcmp(str, duplicate, __builtin_strlen(str))); +} + +int main(void) +{ + const struct CMUnitTest tests[] = { + cmocka_unit_test(test_strlen_strings), + cmocka_unit_test(test_strdup), + }; + + return cmocka_run_group_tests(tests, NULL, NULL); +} -- cgit v1.2.3