Try to mock Esp

.github/workflows/aunit.yml

@@ -21,6 +21,7 @@ jobs:
         git clone https://github.com/bxparks/AceRoutine
         git clone https://github.com/bxparks/AUnit
         git clone https://github.com/bxparks/AceCommon
+        git clone https://github.com/hsaturn/EspMock
     - name: Verify tests
       run: |
         make -C tests

tests/local-tests/Makefile

@@ -2,5 +2,5 @@
 # Makefile to compile and run Arduino programs natively on Linux or MacOS.
 
 APP_NAME := local-tests
-ARDUINO_LIBS := AUnit AceCommon AceTime TinyMqtt ESP8266WiFi
+ARDUINO_LIBS := AUnit AceCommon AceTime TinyMqtt EspMock
 include ../../../EpoxyDuino/EpoxyDuino.mk