Feature/zephyr ztest (#118)

* Leverage (older) embedded unit tests into external unit tests build upon copy of Zephyr's ztest library and CMake.

* Expand top-level CMake build to run external unit tests.

* Expand Zephyr module extension to run external unit tests via west or sanitycheck.

Co-authored-by: Gregory Shue <gregory.shue@legrand.us>

test/bacnet/property/CMakeLists.txt

@@ -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 "/bacnet/[a-zA-Z_/-]*$" "" TST_DIR ${CMAKE_CURRENT_SOURCE_DIR})
+set(ZTST_DIR "${TST_DIR}/ztest/src")
+string(REGEX REPLACE "/test$" "/src" SRC_DIR ${TST_DIR})
+
+add_compile_definitions(
+	BIG_ENDIAN=0
+	CONFIG_ZTEST=1
+	BACNET_PROPERTY_LISTS=1
+	)
+
+include_directories(
+	${SRC_DIR}
+	${TST_DIR}/ztest/include
+	)
+
+add_executable(${PROJECT_NAME}
+    # File(s) under test
+	${SRC_DIR}/bacnet/property.c
+	${SRC_DIR}/bacnet/proplist.c
+    # Support files and stubs (pathname alphabetical)
+	${SRC_DIR}/bacnet/bacdcode.c
+	${SRC_DIR}/bacnet/bacint.c
+	${SRC_DIR}/bacnet/bacreal.c
+	${SRC_DIR}/bacnet/bacstr.c
+	${SRC_DIR}/bacnet/basic/sys/bigend.c
+    # Test and test library files
+	./src/main.c
+	${ZTST_DIR}/ztest_mock.c
+	${ZTST_DIR}/ztest.c
+	)

test/bacnet/property/src/main.c

@@ -0,0 +1,77 @@
+/*
+ * Copyright (c) 2020 Legrand North America, LLC.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/* @file
+ * @brief test BACnet integer encode/decode APIs
+ */
+
+#include <ztest.h>
+#include <bacnet/property.h>
+
+/**
+ * @addtogroup bacnet_tests
+ * @{
+ */
+
+/**
+ * @brief Test
+ */
+void testPropList(void)
+{
+    unsigned i = 0, j = 0;
+    unsigned count = 0;
+    BACNET_PROPERTY_ID property = MAX_BACNET_PROPERTY_ID;
+    unsigned object_id = 0, object_name = 0, object_type = 0;
+    struct special_property_list_t property_list = { 0 };
+
+    for (i = 0; i < OBJECT_PROPRIETARY_MIN; i++) {
+        count = property_list_special_count((BACNET_OBJECT_TYPE)i, PROP_ALL);
+        zassert_true(count >= 3, NULL);
+        object_id = 0;
+        object_name = 0;
+        object_type = 0;
+        for (j = 0; j < count; j++) {
+            property = property_list_special_property(
+                (BACNET_OBJECT_TYPE)i, PROP_ALL, j);
+            if (property == PROP_OBJECT_TYPE) {
+                object_type++;
+            }
+            if (property == PROP_OBJECT_IDENTIFIER) {
+                object_id++;
+            }
+            if (property == PROP_OBJECT_NAME) {
+                object_name++;
+            }
+        }
+        zassert_equal(object_type, 1, NULL);
+        zassert_equal(object_id, 1, NULL);
+        zassert_equal(object_name, 1, NULL);
+        /* test member function */
+        property_list_special((BACNET_OBJECT_TYPE)i, &property_list);
+        zassert_true(
+            property_list_member(
+                property_list.Required.pList, PROP_OBJECT_TYPE), NULL);
+        zassert_true(
+            property_list_member(
+                property_list.Required.pList, PROP_OBJECT_IDENTIFIER), NULL);
+        zassert_true(
+            property_list_member(
+                property_list.Required.pList, PROP_OBJECT_NAME), NULL);
+    }
+}
+/**
+ * @}
+ */
+
+
+void test_main(void)
+{
+    ztest_test_suite(property_tests,
+     ztest_unit_test(testPropList)
+     );
+
+    ztest_run_test_suite(property_tests);
+}