Fix SCRIPT ERROR/ERROR/WARNING on test output

Also "fixing" some GDScript completion tests which
where named wrongly.

modules/gdscript/tests/scripts/completion/argument_options/play_inferred.gd

@@ -1,3 +1,5 @@
+extends Node
+
 @onready var anim := $AnimationPlayer
 
 func test():

modules/gdscript/tests/scripts/completion/argument_options/play_typed.gd

@@ -1,3 +1,5 @@
+extends Node
+
 @onready var anim: AnimationPlayer = $AnimationPlayer
 
 func test():

modules/gdscript/tests/scripts/completion/argument_options/play_untyped.gd

@@ -1,3 +1,5 @@
+extends Node
+
 @onready var anim = $AnimationPlayer
 
 func test():

modules/gdscript/tests/scripts/completion/get_node/literal/dollar.gd

@@ -1,5 +1,5 @@
 extends Node
 
 func a():
-    %AnimationPlayer.➡
+    $UniqueAnimationPlayer.➡
     pass

modules/gdscript/tests/scripts/completion/get_node/literal/percent.gd

@@ -1,5 +1,5 @@
 extends Node
 
 func a():
-    $UniqueAnimationPlayer.➡
+    %AnimationPlayer.➡
     pass

modules/gdscript/tests/scripts/completion/get_node/member_inferred_scene/class_member_inferred_scene.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test := $A
+@onready var test := $A
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_inferred_scene/native_member_inferred_scene.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test := $AnimationPlayer
+@onready var test := $AnimationPlayer
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_scene/class_member_scene.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test = $A
+@onready var test = $A
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_scene/native_member_scene.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test = $AnimationPlayer
+@onready var test = $AnimationPlayer
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_typehint_scene/native_member_typehint_scene.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test: AnimationPlayer = $AnimationPlayer
+@onready var test: AnimationPlayer = $AnimationPlayer
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_typehint_scene_broad/class_member_typehint_scene_broad.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test: Node = $A
+@onready var test: Node = $A
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_typehint_scene_broad/native_member_typehint_scene_broad.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test: Node = $AnimationPlayer
+@onready var test: Node = $AnimationPlayer
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_typehint_scene_incompatible/class_member_typehint_scene_incompatible.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test: Area2D = $A
+@onready var test: Area2D = $A
 
 func a():
     test.➡

modules/gdscript/tests/scripts/completion/get_node/member_typehint_scene_incompatible/native_member_typehint_scene_incompatible.gd

@@ -1,6 +1,6 @@
 extends Node
 
-var test: Area2D = $AnimationPlayer
+@onready var test: Area2D = $AnimationPlayer
 
 func a():
     test.➡

modules/gdscript/tests/test_completion.h

@@ -161,6 +161,8 @@ static void test_directory(const String &p_dir) {
 				owner = scene->get_node(conf.get_value("input", "node_path", "."));
 			}
 
+			// The only requirement is for the script to be parsable, warnings and errors from the analyzer might happen and completion should still work.
+			ERR_PRINT_OFF;
 			if (owner != nullptr) {
 				// Remove the line which contains the sentinel char, to get a valid script.
 				Ref<GDScript> scr;
@@ -184,6 +186,8 @@ static void test_directory(const String &p_dir) {
 			}
 
 			GDScriptLanguage::get_singleton()->complete_code(code, res_path, owner, &options, forced, call_hint);
+			ERR_PRINT_ON;
+
 			String contains_excluded;
 			for (ScriptLanguage::CodeCompletionOption &option : options) {
 				for (const Dictionary &E : exclude) {