diff --git a/libraries/ESP8266HTTPUpdateServer/src/ESP8266HTTPUpdateServer-impl.h b/libraries/ESP8266HTTPUpdateServer/src/ESP8266HTTPUpdateServer-impl.h
index 664454dc81..49bb87f28c 100644
--- a/libraries/ESP8266HTTPUpdateServer/src/ESP8266HTTPUpdateServer-impl.h
+++ b/libraries/ESP8266HTTPUpdateServer/src/ESP8266HTTPUpdateServer-impl.h
@@ -111,7 +111,7 @@ void ESP8266HTTPUpdateServerTemplate<ServerType>::setup(ESP8266WebServerTemplate
         }
       } else if(_authenticated && upload.status == UPLOAD_FILE_END && !_updaterError.length()){
         if(Update.end(true)){ //true to set the size to the current progress
-          if (_serial_output) Serial.printf("Update Success: %u\nRebooting...\n", upload.totalSize);
+          if (_serial_output) Serial.printf("Update Success: %zu\nRebooting...\n", upload.totalSize);
         } else {
           _setUpdaterError();
         }
diff --git a/tests/host/Makefile b/tests/host/Makefile
index b7c8d1ce20..13c9feed52 100644
--- a/tests/host/Makefile
+++ b/tests/host/Makefile
@@ -136,7 +136,7 @@ MOCK_CPP_FILES_COMMON := \
 		MockUART.cpp \
 		MockTools.cpp \
 		MocklwIP.cpp \
-		MockDigital.cpp \
+		HostWiring.cpp \
 	)
 
 MOCK_CPP_FILES := $(MOCK_CPP_FILES_COMMON) \
@@ -356,7 +356,6 @@ MOCK_ARDUINO_LIBS := \
 		MockWiFiServerSocket.cpp \
 		MockWiFiServer.cpp \
 		UdpContextSocket.cpp \
-		HostWiring.cpp \
 		MockEsp.cpp \
 		MockEEPROM.cpp \
 		MockSPI.cpp \
diff --git a/tests/host/common/Arduino.cpp b/tests/host/common/Arduino.cpp
index 1c651e7e1f..ffeeae05cd 100644
--- a/tests/host/common/Arduino.cpp
+++ b/tests/host/common/Arduino.cpp
@@ -111,3 +111,11 @@ cont_t* g_pcont = NULL;
 extern "C" void cont_suspend(cont_t*)
 {
 }
+
+extern "C" int __mockverbose (const char* fmt, ...)
+{
+    (void)fmt;
+    return 0;
+}
+
+int mockverbose (const char* fmt, ...) __attribute__ ((weak, alias("__mockverbose"), format (printf, 1, 2)));
diff --git a/tests/host/common/HostWiring.cpp b/tests/host/common/HostWiring.cpp
index 765d4297b6..1b93d72ece 100644
--- a/tests/host/common/HostWiring.cpp
+++ b/tests/host/common/HostWiring.cpp
@@ -37,6 +37,11 @@
 #define VERBOSE(x...) mockverbose(x)
 #endif
 
+#define GPIONUM 17
+
+static uint8_t _mode[GPIONUM];
+static uint8_t _gpio[GPIONUM];
+
 void pinMode (uint8_t pin, uint8_t mode)
 {
 	#define xxx(mode) case mode: m=STRHELPER(mode); break
@@ -53,11 +58,19 @@ void pinMode (uint8_t pin, uint8_t mode)
 	default: m="(special)";
 	}
 	VERBOSE("gpio%d: mode='%s'\n", pin, m);
+
+    if (pin < GPIONUM)
+    {
+      _mode[pin] = mode;
+    }
 }
 
 void digitalWrite(uint8_t pin, uint8_t val)
 {
 	VERBOSE("digitalWrite(pin=%d val=%d)\n", pin, val);
+    if (pin < GPIONUM) {
+        _gpio[pin] = val;
+    }
 }
 
 void analogWrite(uint8_t pin, int val)
@@ -80,6 +93,9 @@ int digitalRead(uint8_t pin)
 {
 	VERBOSE("digitalRead(%d)\n", pin);
 
-	// pin 0 is most likely a low active input
-	return pin ? 0 : 1;
+    if (pin < GPIONUM) {
+      return _gpio[pin] != 0;
+    } else {
+      return 0;
+    }
 }
diff --git a/tests/host/common/MockDigital.cpp b/tests/host/common/MockDigital.cpp
deleted file mode 100644
index aa04527ab5..0000000000
--- a/tests/host/common/MockDigital.cpp
+++ /dev/null
@@ -1,56 +0,0 @@
-/*
-  digital.c - wiring digital implementation for esp8266
-
-  Copyright (c) 2015 Hristo Gochkov. All rights reserved.
-  This file is part of the esp8266 core for Arduino environment.
-
-  This library is free software; you can redistribute it and/or
-  modify it under the terms of the GNU Lesser General Public
-  License as published by the Free Software Foundation; either
-  version 2.1 of the License, or (at your option) any later version.
-
-  This library is distributed in the hope that it will be useful,
-  but WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-  Lesser General Public License for more details.
-
-  You should have received a copy of the GNU Lesser General Public
-  License along with this library; if not, write to the Free Software
-  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
-*/
-#define ARDUINO_MAIN
-#include "wiring_private.h"
-#include "pins_arduino.h"
-#include "c_types.h"
-#include "eagle_soc.h"
-#include "ets_sys.h"
-#include "user_interface.h"
-#include "core_esp8266_waveform.h"
-#include "interrupts.h"
-
-extern "C" {
-
-static uint8_t _mode[17];
-static uint8_t _gpio[17];
-
-extern void pinMode(uint8_t pin, uint8_t mode) {
-  if (pin < 17) {
-    _mode[pin] = mode;
-  }
-}
-
-extern void digitalWrite(uint8_t pin, uint8_t val) {
-  if (pin < 17) {
-    _gpio[pin] = val;
-  }
-}
-
-extern int digitalRead(uint8_t pin) {
-  if (pin < 17) {
-    return _gpio[pin] != 0;
-  } else {
-    return 0;
-  }
-}
-
-};
diff --git a/tests/host/common/MockEsp.cpp b/tests/host/common/MockEsp.cpp
index d11a39e940..293f6c5047 100644
--- a/tests/host/common/MockEsp.cpp
+++ b/tests/host/common/MockEsp.cpp
@@ -142,6 +142,15 @@ void EspClass::getHeapStats(uint32_t* hfree, uint16_t* hmax, uint8_t* hfrag) {
   if (hfrag) *hfrag = 100 - (sqrt(hm) * 100) / hf;
 }
 
+void EspClass::getHeapStats(uint32_t* hfree, uint32_t* hmax, uint8_t* hfrag) {
+  uint32_t hf = 10 * 1024;
+  float hm = 1 * 1024;
+
+  if (hfree) *hfree = hf;
+  if (hmax) *hmax = hm;
+  if (hfrag) *hfrag = 100 - (sqrt(hm) * 100) / hf;
+}
+
 bool EspClass::flashEraseSector(uint32_t sector)
 {
 	(void) sector;
@@ -263,3 +272,8 @@ void EspClass::setExternalHeap()
 void EspClass::resetHeap()
 {
 }
+
+void EspClass::reset ()
+{
+    abort();
+}
diff --git a/tests/host/common/MockTools.cpp b/tests/host/common/MockTools.cpp
index 5eb7969de7..eb2c41ed12 100644
--- a/tests/host/common/MockTools.cpp
+++ b/tests/host/common/MockTools.cpp
@@ -78,3 +78,12 @@ void configTime(int timezone, int daylightOffset_sec,
 
 	mockverbose("configTime: TODO (tz=%dH offset=%dS) (time will be host's)\n", timezone, daylightOffset_sec);
 }
+
+void configTime(const char* tz, const char* server1, const char* server2, const char* server3)
+{
+	(void)server1;
+	(void)server2;
+	(void)server3;
+
+	mockverbose("configTime: TODO (tz='%s') (time will be host's)\n", tz);
+}

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