Added testing framework

platformio.ini

@@ -12,3 +12,4 @@
 platform = atmelsam
 board = nano_33_iot
 framework = arduino
+lib_deps = throwtheswitch/Unity@^2.6.0

test/README

@@ -1,11 +0,0 @@
-
-This directory is intended for PlatformIO Test Runner and project tests.
-
-Unit Testing is a software testing method by which individual units of
-source code, sets of one or more MCU program modules together with associated
-control data, usage procedures, and operating procedures, are tested to
-determine whether they are fit for use. Unit testing finds problems early
-in the development cycle.
-
-More information about PlatformIO Unit Testing:
-- https://docs.platformio.org/en/latest/advanced/unit-testing/index.html

test/test_user_functions.cpp

@@ -0,0 +1,43 @@
+#include <Arduino.h>
+#include <unity.h>
+
+void setUp(void)
+{
+    // set stuff up here
+}
+
+void tearDown(void)
+{
+    // clean stuff up here
+}
+
+void test_function_should_doBlahAndBlah(void)
+{
+    TEST_ASSERT_TRUE(true);
+}
+
+void test_function_should_doAlsoDoBlah(void)
+{
+    TEST_ASSERT_TRUE(true);
+}
+
+int runUnityTests(void)
+{
+    UNITY_BEGIN();
+    RUN_TEST(test_function_should_doBlahAndBlah);
+    RUN_TEST(test_function_should_doAlsoDoBlah);
+    return UNITY_END();
+}
+
+/**
+ * For Arduino framework
+ */
+void setup()
+{
+    // Wait ~2 seconds before the Unity test runner
+    // establishes connection with a board Serial interface
+    delay(2000);
+
+    runUnityTests();
+}
+void loop() {}