Device side test library and test runner

tests/device/test_overrides/test_overrides.ino

@@ -0,0 +1,38 @@
+#include <BSTest.h>
+BS_ENV_DECLARE();
+
+ADC_MODE(ADC_VCC);
+RF_MODE(RF_CAL);
+
+static int rf_pre_init_flag = 0;
+
+RF_PRE_INIT()
+{
+    rf_pre_init_flag = 42;
+}
+
+static unsigned setup_micros;
+
+void setup()
+{
+	setup_micros = micros();
+    Serial.begin(115200);
+    BS_RUN(Serial);
+}
+
+TEST_CASE("ADC_MODE override works", "[core]")
+{
+    auto vcc = ESP.getVcc();
+    Serial.printf("VCC: %d\r\n", vcc);
+    Serial.printf("A0: %d\r\n", analogRead(A0));
+    CHECK(vcc > 3000 && vcc < 3600);
+}
+
+TEST_CASE("RF_PRE_INIT override works", "[core]")
+{
+    CHECK(rf_pre_init_flag == 42);
+}
+
+void loop()
+{
+}