chore: add GUT test framework

addons/gut/scratch/make_class_from_string.gd

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+extends SceneTree
+# ##############################################################################
+# Proof of concept to create a class from a string instead of writing it to a
+# file and then loading it.
+#
+# I hope to use this to create doubles in the future, though it will make
+# debugging the generated code a little  harder, it always bothered me that I
+# was writing and reading files.  It's slower and wastes cycles on the HD.
+# Probably shouldn't bother me that much, but it does..
+# ##############################################################################
+
+class SuperPack:
+	extends PackedScene
+	var _script =  null
+	var _scene = null
+
+	func set_script_obj(obj):
+		_script = obj
+
+	func instantiate(edit_state=0):
+		var inst = _scene.instantiate(edit_state)
+		inst.set_script(_script)
+		return inst
+
+	func load_scene(path):
+		_scene = load(path)
+
+
+func make_class():
+	var text = ""
+
+	text = "class MadeIt:\n" + \
+		"\tvar something=\"hello\"\n" + \
+		"\tfunc do_something():\n" +\
+		"\t\treturn 'did it'"
+
+	return text
+
+func make_node():
+	var text = "extends Node2D\n" + \
+	"func do_something():\n" + \
+			"\treturn 'did it!!'"
+	return text
+
+
+func get_script_for_text(text):
+	var script = GDScript.new()
+	script.set_source_code(text)
+	script.reload()
+	return script
+
+func create_node2d():
+	var n = Node2D.new()
+	n.set_script(get_script_for_text(make_node()))
+	print('create node2d = ', n.do_something())
+	n.free()
+
+func create_instance():
+	var obj = RefCounted.new()
+	obj.set_script(get_script_for_text(make_class()))
+
+	var inner_class = obj.MadeIt.new()
+	print('create instance  = ', inner_class.do_something())
+
+func create_scene():
+	var s2 = SuperPack.new()
+	s2.load_scene('res://test/resources/doubler_test_objects/double_me_scene.tscn')
+	print(s2._scene._bundled)
+	s2.set_script_obj(get_script_for_text(make_node()))
+
+	var inst = s2.instantiate()
+	print('create scene = ', inst.do_something())
+
+
+func _init():
+	create_node2d()
+	create_instance()
+	create_scene()
+	quit()