Refactor integration test

Instead of pulling information out of the screen to do stuff with it, we are
asking the screen to tell us what we need.

project/story/starting_stories/steven_dnd.gd

@@ -33,7 +33,7 @@ var options := {
 			"curiosity": 1,
 		}
 	},
-	"Er... No thanks.": {
+	"Er... No thanks. ": {
 		"text": "\"Oh, Okay.\" \nSteven walks away dejectedly.",
 	},
 }

project/test/integration/simple_story_validity_test.gd

@@ -216,20 +216,12 @@ func _test_text_content(text, story_path: String):
 func _get_option_line_lengths(story: SimpleStory) -> Array[int]:
 	var game_screen: Node = add_child_autofree(preload("res://ui/game_screen.tscn").instantiate())
 
-	for option in story.options:
-		game_screen.create_option_button(option)
+	# Extract just the option names from the options dictionary
+	var options :Array = story.options.keys()
+
+	game_screen.show_options(options)
 
 	# Required to let the UI "settle" before checking the line count.
 	await get_tree().process_frame
 
-	var option_buttons := game_screen.get_node("%OptionArea").get_children()
-
-	var result: Array[int] = []
-
-	for button in option_buttons:
-		var label := button.get_node("%Label")
-		var text_lines = label.get_visible_line_count()
-
-		result.append(text_lines)
-
-	return result
+	return game_screen.get_visible_line_counts_in_options()

project/ui/audible_button.gd

@@ -18,6 +18,10 @@ signal pressed
 			%Label.add_theme_color_override("font_color", text_color)
 
 
+func get_visible_line_count() -> int:
+	return %Label.get_visible_line_count()
+
+
 func _on_pressed():
 	Sfx.play_click_sound()
 	pressed.emit()

project/ui/game_screen.gd

@@ -28,6 +28,17 @@ func _input(event):
 		tapped_anywhere.emit()
 
 
+## Return the respective line count of each option button text.
+##
+## This is used for integration testing and is not intended to be
+## part of the presenter layer.
+func get_visible_line_counts_in_options() -> Array[int]:
+	var result : Array[int] = []
+	for button in _option_area.get_children():
+		result.append(button.get_visible_line_count())
+	return result
+
+
 ## Finish an interaction with the presenter. 
 ## This gives the player a chance to confirm that they are done with the
 ## current story.
@@ -106,7 +117,7 @@ func show_npc(npc:Npc, location:Texture) -> void:
 func show_options(options: Array) -> String:
 	var buttons : Array[Control] = []
 	for option in options:
-		buttons.append(create_option_button(option))
+		buttons.append(_create_option_button(option))
 
 	var selection = await _option_selected
 	GameLog.made_choice(selection)
@@ -117,7 +128,7 @@ func show_options(options: Array) -> String:
 	return selection
 
 
-func create_option_button(option: String) -> Node:
+func _create_option_button(option: String) -> Node:
 	var button := preload("res://ui/audible_button.tscn").instantiate()
 	button.text = option
 	button.pressed.connect(func(): _option_selected.emit(option))