From cbc6f23a8af0c864e3607dc24764582149c0d1f3 Mon Sep 17 00:00:00 2001
From: Giuliano Zaro <3684609+GMagician@users.noreply.github.com>
Date: Mon, 4 Apr 2022 01:49:51 +0200
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=A7=20Sanity-check=20SWITCHING=5FTOOLH?=
 =?UTF-8?q?EAD=5FX=5FPOS=20(#23985)?=
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---
 Marlin/src/inc/SanityCheck.h     | 8 ++++++++
 buildroot/tests/BIGTREE_GTR_V1_0 | 3 ++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index f9b6d8da4e..c60c792d36 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1301,6 +1301,14 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
   #endif
 #endif
 
+/**
+ * Generic Switching Toolhead requirements
+ */
+#if ANY(SWITCHING_TOOLHEAD, MAGNETIC_SWITCHING_TOOLHEAD, ELECTROMAGNETIC_SWITCHING_TOOLHEAD)
+  constexpr float thpx[] = SWITCHING_TOOLHEAD_X_POS;
+  static_assert(COUNT(thpx) == EXTRUDERS, "SWITCHING_TOOLHEAD_X_POS must be an array EXTRUDERS long.");
+#endif
+
 /**
  * Switching Toolhead requirements
  */
diff --git a/buildroot/tests/BIGTREE_GTR_V1_0 b/buildroot/tests/BIGTREE_GTR_V1_0
index 0a80a6b78c..4f1a4a690a 100755
--- a/buildroot/tests/BIGTREE_GTR_V1_0
+++ b/buildroot/tests/BIGTREE_GTR_V1_0
@@ -31,7 +31,8 @@ exec_test $1 $2 "BigTreeTech GTR | 6 Extruders | Quad Z + Endstops" "$3"
 restore_configs
 opt_set MOTHERBOARD BOARD_BTT_GTR_V1_0 SERIAL_PORT -1 \
         EXTRUDERS 3 TEMP_SENSOR_1 1 TEMP_SENSOR_2 1 \
-        SERVO_DELAY '{ 300, 300, 300 }'
+        SERVO_DELAY '{ 300, 300, 300 }' \
+        SWITCHING_TOOLHEAD_X_POS '{ 215, 0 ,0 }'
 opt_enable SWITCHING_TOOLHEAD TOOL_SENSOR
 exec_test $1 $2 "BigTreeTech GTR | Switching Toolhead | Tool Sensors" "$3"