Chore/refactor automac unit test (#557)

* move ports automac module into bacnet/datalink and add unit test.
2024-01-12 16:14:24 -06:00
parent c6dcab8f0a
commit 587e3c5a11
8 changed files with 172 additions and 143 deletions
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required(VERSION 3.10 FATAL_ERROR)
+
+get_filename_component(basename ${CMAKE_CURRENT_SOURCE_DIR} NAME)
+project(test_${basename}
+    VERSION 1.0.0
+    LANGUAGES C)
+
+string(REGEX REPLACE
+    "/test/bacnet/[a-zA-Z_/-]*$"
+    "/src"
+    SRC_DIR
+    ${CMAKE_CURRENT_SOURCE_DIR})
+string(REGEX REPLACE
+    "/test/bacnet/[a-zA-Z_/-]*$"
+    "/test"
+    TST_DIR
+    ${CMAKE_CURRENT_SOURCE_DIR})
+set(ZTST_DIR "${TST_DIR}/ztest/src")
+
+add_compile_definitions(
+    BIG_ENDIAN=0
+    CONFIG_ZTEST=1
+    )
+
+include_directories(
+    ${SRC_DIR}
+    ${TST_DIR}/ztest/include
+    )
+
+add_executable(${PROJECT_NAME}
+    # File(s) under test
+    ${SRC_DIR}/bacnet/datalink/automac.c
+    # Support files and stubs (pathname alphabetical)
+    # Test and test library files
+    ./src/main.c
+    ${ZTST_DIR}/ztest_mock.c
+    ${ZTST_DIR}/ztest.c
+    )
@@ -0,0 +1,99 @@
+/**
+ * @file
+ * @brief test BACnet MSTP zero-config auto MAC address
+ * @author Steve Karg <skarg@users.sourceforge.net>
+ * @date 2023-June
+ *
+ * SPDX-License-Identifier: MIT
+ */
+#include <zephyr/ztest.h>
+#include <bacnet/datalink/automac.h>
+#include <bacnet/bytes.h>
+
+/**
+ * @addtogroup bacnet_tests
+ * @{
+ */
+
+/**
+ * @brief Test Auto-MAC initialization
+ */
+static void test_automac_init(void)
+{
+    uint8_t mac = 255;
+    bool options;
+
+    automac_init();
+    zassert_equal(automac_free_address_count(), 0, NULL);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, 255, NULL);
+    automac_pfm_set(MSTP_MAC_SLOTS_OFFSET);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, MSTP_MAC_SLOTS_OFFSET, NULL);
+    zassert_equal(automac_free_address_count(), 1, NULL);
+    automac_token_set(MSTP_MAC_SLOTS_OFFSET);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, 255, NULL);
+    zassert_equal(automac_free_address_count(), 0, NULL);
+    automac_pfm_set(127);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, 127, NULL);
+    zassert_equal(automac_free_address_count(), 1, NULL);
+    automac_token_set(127);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, 255, NULL);
+    zassert_equal(automac_free_address_count(), 0, NULL);
+    /* the ANSI rand() uses consistent sequence based on seed */
+    srand(42);
+    mac = automac_free_address_random();
+    zassert_equal(mac, 255, NULL);
+    automac_pfm_set(MSTP_MAC_SLOTS_OFFSET + 1);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, (MSTP_MAC_SLOTS_OFFSET + 1), NULL);
+    mac = automac_free_address_random();
+    zassert_equal(mac, (MSTP_MAC_SLOTS_OFFSET + 1), NULL);
+    /* test 2 free addresses */
+    automac_pfm_set(MSTP_MAC_SLOTS_OFFSET + 2);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, (MSTP_MAC_SLOTS_OFFSET + 1), NULL);
+    mac = automac_free_address_mac(1);
+    zassert_equal(mac, (MSTP_MAC_SLOTS_OFFSET + 2), NULL);
+    mac = automac_free_address_random();
+    options = (mac == (MSTP_MAC_SLOTS_OFFSET + 1)) || 
+        (mac == (MSTP_MAC_SLOTS_OFFSET + 2));
+    zassert_true(options, NULL);
+    /* test 3 free addresses */
+    automac_pfm_set(126);
+    mac = automac_free_address_mac(0);
+    zassert_equal(mac, (MSTP_MAC_SLOTS_OFFSET + 1), NULL);
+    mac = automac_free_address_mac(1);
+    zassert_equal(mac, (MSTP_MAC_SLOTS_OFFSET + 2), NULL);
+    mac = automac_free_address_mac(2);
+    zassert_equal(mac, 126, NULL);
+    mac = automac_free_address_random();
+    options = (mac == (MSTP_MAC_SLOTS_OFFSET + 1)) || 
+        (mac == (MSTP_MAC_SLOTS_OFFSET + 2)) ||
+        (mac == 126);
+    zassert_true(options, NULL);
+    /* test the stored address */
+    mac = automac_address();
+    zassert_true(mac < MSTP_MAC_SLOTS_MAX, NULL);
+    automac_address_set(MSTP_MAC_SLOTS_OFFSET);
+    mac = automac_address();
+    zassert_equal(mac, MSTP_MAC_SLOTS_OFFSET, NULL);
+
+    automac_init();
+    automac_token_set(0x6B);
+    mac = automac_next_station(0x25);
+    zassert_equal(mac, 0x6B, NULL);
+}
+
+/**
+ * @}
+ */
+void test_main(void)
+{
+    ztest_test_suite(automac_tests, ztest_unit_test(test_automac_init));
+
+    ztest_run_test_suite(automac_tests);
+}