tests: unit: util: Add unit test of utf8_trunc and utf8_lcpy (1fc67d22) · Commits · Wenxi XU / zephyr

tests/unit/util/CMakeLists.txt

+6 −1

Original line number	Diff line number	Diff line
		@@ -4,7 +4,12 @@ cmake_minimum_required(VERSION 3.20.0)

		project(util)
		find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
		target_sources(testbinary PRIVATE main.c ${ZEPHYR_BASE}/lib/utils/dec.c)
		target_sources(testbinary
		PRIVATE
		main.c
		${ZEPHYR_BASE}/lib/utils/dec.c
		${ZEPHYR_BASE}/lib/utils/utf8.c
		)

		if(CONFIG_CPP)
		# When testing for C++ force test file C++ compilation

tests/unit/util/main.c

+100 −0

Original line number	Diff line number	Diff line
		@@ -6,6 +6,7 @@

		#include <zephyr/ztest.h>
		#include <zephyr/sys/util.h>
		#include <stdio.h>
		#include <string.h>

		ZTEST(util, test_u8_to_dec) {
		@@ -813,4 +814,103 @@ ZTEST(util, test_SIZEOF_FIELD)
		BUILD_ASSERT(SIZEOF_FIELD(struct test_t, d) == 2, "The d member is 2-byte wide.");
		}

		ZTEST(util, test_utf8_trunc_truncated)
		{
		char test_str[] = "€€€";
		char expected_result[] = "€€";

		/* Remove last byte from truncated_test_str and verify that it first is incorrectly
		* truncated, followed by a proper truncation and verification
		*/
		test_str[strlen(test_str) - 1] = '\0';
		zassert(strcmp(test_str, "€€€") != 0, "Failed to do invalid truncation");
		zassert(strcmp(test_str, expected_result) != 0, "Failed to do invalid truncation");

		utf8_trunc(test_str);

		zassert_str_equal(test_str, expected_result, "Failed to truncate");
		}

		ZTEST(util, test_utf8_trunc_not_truncated)
		{
		/* Attempt to truncate a valid UTF8 string and verify no changed */
		char test_str[] = "€€€";
		char expected_result[] = "€€€";

		utf8_trunc(test_str);

		zassert_str_equal(test_str, expected_result, "Failed to truncate");
		}

		ZTEST(util, test_utf8_trunc_zero_length)
		{
		/* Attempt to truncate a valid UTF8 string and verify no changed */
		char test_str[] = "";
		char expected_result[] = "";

		utf8_trunc(test_str);

		zassert_str_equal(test_str, expected_result, "Failed to truncate");
		}

		ZTEST(util, test_utf8_lcpy_truncated)
		{
		/* dest_str size is based on storing 2 * € plus the null terminator plus an extra space to
		* verify that it's truncated properly
		*/
		char dest_str[strlen("€") * 2 + 1 + 1];
		char test_str[] = "€€€";
		char expected_result[] = "€€";

		utf8_lcpy(dest_str, test_str, sizeof((dest_str)));

		zassert_str_equal(dest_str, expected_result, "Failed to copy");
		}

		ZTEST(util, test_utf8_lcpy_not_truncated)
		{
		/* dest_str size is based on storing 3 * € plus the null terminator */
		char dest_str[strlen("€") * 3 + 1];
		char test_str[] = "€€€";
		char expected_result[] = "€€€";

		utf8_lcpy(dest_str, test_str, sizeof((dest_str)));

		zassert_str_equal(dest_str, expected_result, "Failed to truncate");
		}

		ZTEST(util, test_utf8_lcpy_zero_length_copy)
		{
		/* dest_str size is based on the null terminator */
		char dest_str[1];
		char test_str[] = "";
		char expected_result[] = "";

		utf8_lcpy(dest_str, test_str, sizeof((dest_str)));

		zassert_str_equal(dest_str, expected_result, "Failed to truncate");
		}

		ZTEST(util, test_utf8_lcpy_zero_length_dest)
		{
		char dest_str[] = "A";
		char test_str[] = "";
		char expected_result[] = "A"; /* expect no changes to dest_str */

		utf8_lcpy(dest_str, test_str, 0);

		zassert_str_equal(dest_str, expected_result, "Failed to truncate");
		}

		ZTEST(util, test_utf8_lcpy_null_termination)
		{
		char dest_str[] = "DEADBEEF";
		char test_str[] = "DEAD";
		char expected_result[] = "DEAD";

		utf8_lcpy(dest_str, test_str, sizeof(dest_str));

		zassert_str_equal(dest_str, expected_result, "Failed to truncate");
		}

		ZTEST_SUITE(util, NULL, NULL, NULL, NULL, NULL);

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