Tweak tests, consolidate pins target validation (#21254)

Marlin/src/pins/rambo/env_validate.h

@@ -0,0 +1,26 @@
+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2021 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+#if NOT_TARGET(__AVR_ATmega2560__)
+  #error "Oops! Select 'Arduino Mega 2560 or Rambo' in 'Tools > Board.'"
+#endif

Marlin/src/pins/rambo/pins_EINSY_RAMBO.h

@@ -25,9 +25,7 @@
  * Einsy-Rambo pin assignments
  */
 
-#if NOT_TARGET(__AVR_ATmega2560__)
-  #error "Oops! Select 'Arduino Mega 2560 or Rambo' in 'Tools > Board.'"
-#endif
+#include "env_validate.h"
 
 #define BOARD_INFO_NAME "Einsy Rambo"
 

Marlin/src/pins/rambo/pins_EINSY_RETRO.h

@@ -25,9 +25,7 @@
  * Einsy-Retro pin assignments
  */
 
-#if NOT_TARGET(__AVR_ATmega2560__)
-  #error "Oops! Select 'Arduino Mega 2560 or Rambo' in 'Tools > Board.'"
-#endif
+#include "env_validate.h"
 
 #define BOARD_INFO_NAME "Einsy Retro"
 

Marlin/src/pins/rambo/pins_MINIRAMBO.h

@@ -25,9 +25,7 @@
  * Mini-RAMBo pin assignments
  */
 
-#if NOT_TARGET(__AVR_ATmega2560__)
-  #error "Oops! Select 'RAMBo' in 'Tools > Board' or the Mega2560 environment in PlatformIO."
-#endif
+#include "env_validate.h"
 
 #if MB(MINIRAMBO_10A)
   #define BOARD_INFO_NAME "Mini RAMBo 1.0a"

Marlin/src/pins/rambo/pins_RAMBO.h

@@ -41,9 +41,7 @@
  * Rambo pin assignments
  */
 
-#if NOT_TARGET(__AVR_ATmega2560__)
-  #error "Oops! Select 'Arduino/Genuino Mega or Mega 2560' in 'Tools > Board.'"
-#endif
+#include "env_validate.h"
 
 #ifndef BOARD_INFO_NAME
   #define BOARD_INFO_NAME "Rambo"

Marlin/src/pins/rambo/pins_SCOOVO_X9H.h

@@ -25,9 +25,7 @@
  * Rambo pin assignments MODIFIED FOR Scoovo X9H
  ************************************************/
 
-#if NOT_TARGET(__AVR_ATmega2560__)
-  #error "Oops! Select 'Arduino/Genuino Mega or Mega 2560' in 'Tools > Board.'"
-#endif
+#include "env_target.h"
 
 #define BOARD_INFO_NAME "Scoovo X9H"