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/indtext/CMakeLists.txt

@@ -0,0 +1,33 @@
+# 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
+	)
+
+include_directories(
+	${SRC_DIR}
+	${TST_DIR}/ztest/include
+	)
+
+add_executable(${PROJECT_NAME}
+    # File(s) under test
+	${SRC_DIR}/bacnet/indtext.c
+    # Support files and stubs (pathname alphabetical)
+    # Test and test library files
+	./src/main.c
+	${ZTST_DIR}/ztest_mock.c
+	${ZTST_DIR}/ztest.c
+	)

test/bacnet/indtext/src/main.c

@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2020 Legrand North America, LLC.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+/* @file
+ * @brief test BACnet integer encode/decode APIs
+ */
+
+#include <ztest.h>
+#include <bacnet/indtext.h>
+
+/**
+ * @addtogroup bacnet_tests
+ * @{
+ */
+
+/**
+ * @brief Test
+ */
+static INDTEXT_DATA data_list[] = { { 1, "Joshua" }, { 2, "Mary" },
+    { 3, "Anna" }, { 4, "Christopher" }, { 5, "Patricia" }, { 0, NULL } };
+
+static void testIndexText(void)
+{
+    unsigned i; /*counter */
+    const char *pString;
+    unsigned index;
+    bool valid;
+    unsigned count = 0;
+
+    for (i = 0; i < 10; i++) {
+        pString = indtext_by_index(data_list, i);
+        if (pString) {
+            count++;
+            valid = indtext_by_string(data_list, pString, &index);
+            zassert_true(valid, NULL);
+            zassert_equal(index, i, NULL);
+            zassert_equal(
+                index, indtext_by_string_default(data_list, pString, index), NULL);
+        }
+    }
+    zassert_equal(indtext_count(data_list), count, NULL);
+    zassert_false(indtext_by_string(data_list, "Harry", NULL), NULL);
+    zassert_false(indtext_by_string(data_list, NULL, NULL), NULL);
+    zassert_false(indtext_by_string(NULL, NULL, NULL), NULL);
+    zassert_is_null(indtext_by_index(data_list, 0), NULL);
+    zassert_is_null(indtext_by_index(data_list, 10), NULL);
+    zassert_is_null(indtext_by_index(NULL, 10), NULL);
+    /* case insensitive versions */
+    zassert_true(indtext_by_istring(data_list, "JOSHUA", NULL), NULL);
+    zassert_true(indtext_by_istring(data_list, "joshua", NULL), NULL);
+    valid = indtext_by_istring(data_list, "ANNA", &index);
+    zassert_equal(
+        index, indtext_by_istring_default(data_list, "ANNA", index), NULL);
+}
+/**
+ * @}
+ */
+
+
+void test_main(void)
+{
+    ztest_test_suite(indtext_tests,
+     ztest_unit_test(testIndexText)
+     );
+
+    ztest_run_test_suite(indtext_tests);
+}