Added testing framework

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() {}