fix: 修复聊天系统编译错误

- 修复 WebSocketManager/SocketIOClient 函数缩进错误
- 重命名 is_connected() 避免与 Object 基类冲突
- 修复 tscn 文件多余前导空格
- 修复测试文件 GUT 断言函数调用
- 添加 GUT 测试框架

addons/gut/gut_menu.gd

@@ -0,0 +1,103 @@
+var sub_menu : PopupMenu = null
+
+var _menus = {
+	# name : {
+	# 	index,
+	# 	id,
+	# 	callback
+	# }
+}
+
+signal about
+signal rerun
+signal run_all
+signal run_at_cursor
+signal run_inner_class
+signal run_script
+signal run_test
+signal show_gut
+signal toggle_windowed
+
+
+func _init():
+	sub_menu = PopupMenu.new()
+	sub_menu.index_pressed.connect(_on_sub_menu_index_pressed)
+	make_menu()
+
+
+func _invalid_index():
+	print("bad menu index")
+
+
+func _on_sub_menu_index_pressed(index):
+	var to_call : Callable = _invalid_index
+	for key in _menus:
+		if(_menus[key].index == index):
+			to_call = _menus[key].callback
+
+	to_call.call()
+
+
+func add_menu(display_text, sig_to_emit, tooltip=''):
+	var index = sub_menu.item_count
+	_menus[sig_to_emit.get_name()] = {
+		index = index,
+		id = index,
+		callback = sig_to_emit.emit
+	}
+	sub_menu.add_item(display_text, index)
+	sub_menu.set_item_tooltip(index, tooltip)
+	return index
+
+
+
+func make_menu():
+	add_menu("Toggle Windowed", toggle_windowed, 
+		'Toggle GUT in the dock or a floating window')
+	add_menu("Show/Hide GUT", show_gut, '')
+
+	sub_menu.add_separator('Run')
+	add_menu("Run All", run_all,
+		"Run all tests")
+	add_menu("Run Script", run_script,
+		"Run the currently selected script")
+	add_menu("Run Inner Class", run_inner_class,
+		"Run the currently selected inner test class")
+	add_menu("Run Test", run_test,
+		"Run the currently selected test")
+	add_menu("Run At Cursor", run_at_cursor,
+		"Run the most specific of script/inner class/test based on cursor position")
+	add_menu("Rerun", rerun, "Rerun the last test(s) ran", )
+
+	sub_menu.add_separator()
+	add_menu("About", about, 'All about GUT')
+
+
+func set_shortcut(menu_name, accel_or_input_key):
+	if(typeof(accel_or_input_key) == TYPE_INT):
+		sub_menu.set_item_accelerator(_menus[menu_name].index, accel_or_input_key)
+	elif(typeof(accel_or_input_key) == TYPE_OBJECT and accel_or_input_key is InputEventKey):
+		sub_menu.set_item_accelerator(_menus[menu_name].index, accel_or_input_key.get_keycode_with_modifiers())
+
+
+func disable_menu(menu_name, disabled):
+	sub_menu.set_item_disabled(_menus[menu_name].index, disabled)
+
+
+func apply_gut_shortcuts(shortcut_dialog):
+	set_shortcut("show_gut",
+		shortcut_dialog.scbtn_panel.get_input_event())
+	set_shortcut("run_all",
+		shortcut_dialog.scbtn_run_all.get_input_event())
+	set_shortcut("run_script",
+		shortcut_dialog.scbtn_run_current_script.get_input_event())
+	set_shortcut("run_inner_class",
+		shortcut_dialog.scbtn_run_current_inner.get_input_event())
+	set_shortcut("run_test",
+		shortcut_dialog.scbtn_run_current_test.get_input_event())
+	set_shortcut("run_at_cursor",
+		shortcut_dialog.scbtn_run_at_cursor.get_input_event())
+	set_shortcut("rerun",
+		shortcut_dialog.scbtn_rerun.get_input_event())
+	set_shortcut("toggle_windowed",
+		shortcut_dialog.scbtn_windowed.get_input_event())