1 files changed, 104 insertions, 0 deletions
diff --git a/addons/escoria-core/testing/issue_946_room_transition_test.gd b/addons/escoria-core/testing/issue_946_room_transition_test.gd
new file mode 100644
index 0000000..937f441
--- /dev/null
+++ b/addons/escoria-core/testing/issue_946_room_transition_test.gd
@@ -0,0 +1,104 @@
+class_name Issue946RoomTransitionTest
+extends GdUnitTestSuite
+
+
+const MARK_SCRIPT := "res://game/characters/mark/mark.esc"
+const ROOM_05 := "res://game/rooms/room05/room05.tscn"
+const ROOM_06 := "res://game/rooms/room06/room06.tscn"
+const EVENT_FINISHED_TIMEOUT_SECONDS := 5.0
+
+
+var _compiler_before: ESCCompiler
+var _event_finished_rc: Variant = []
+var _event_finished_timed_out := false
+
+
+class CountingCompiler extends ESCCompiler:
+	var load_counts: Dictionary = {}
+
+
+	func load_esc_file(path: String, associated_global_id: String = "") -> ESCScript:
+		load_counts[path] = load_counts.get(path, 0) + 1
+		return super.load_esc_file(path, associated_global_id)
+
+
+	func get_load_count(path: String) -> int:
+		return load_counts.get(path, 0)
+
+
+	func reset_counts() -> void:
+		load_counts.clear()
+
+
+func before() -> void:
+	_compiler_before = escoria.esc_compiler
+	escoria.esc_compiler = CountingCompiler.new()
+	escoria.event_manager.interrupt([], false)
+	escoria.event_manager.clear_event_queue()
+
+
+func after() -> void:
+	escoria.event_manager.interrupt([], false)
+	escoria.event_manager.clear_event_queue()
+	escoria.esc_compiler = _compiler_before
+
+
+func test_room_6_to_room_5_loads_player_script_once() -> void:
+	var compiler := escoria.esc_compiler as CountingCompiler
+
+	await _change_scene_and_wait(ROOM_06, false)
+
+	compiler.reset_counts()
+
+	await _change_scene_and_wait(ROOM_05, true)
+	await _wait_for_frames(3)
+
+	assert_object(escoria.object_manager.get_object("player")).is_not_null()
+	assert_int(compiler.get_load_count(MARK_SCRIPT)).is_equal(1)
+
+
+func _change_scene_and_wait(room_path: String, enable_automatic_transition: bool) -> void:
+	var room_ready: Signal = escoria.main.room_ready
+	ChangeSceneCommand.new().run([room_path, enable_automatic_transition])
+	await room_ready
+	if enable_automatic_transition:
+		await _wait_for_event_finished(escoria.event_manager.EVENT_TRANSITION_IN)
+
+
+func _wait_for_event_finished(event_name: String) -> void:
+	_event_finished_rc = []
+	_event_finished_timed_out = false
+
+	escoria.event_manager.event_finished.connect(_on_wait_event_finished)
+	var timeout_timer := get_tree().create_timer(EVENT_FINISHED_TIMEOUT_SECONDS)
+	timeout_timer.timeout.connect(_on_wait_event_finished_timeout)
+
+	while not _event_finished_timed_out:
+		await get_tree().process_frame
+		var rc := _event_finished_rc
+		if rc is Array and rc.size() > 1 and rc[1] == event_name:
+			escoria.event_manager.event_finished.disconnect(_on_wait_event_finished)
+			if timeout_timer.timeout.is_connected(_on_wait_event_finished_timeout):
+				timeout_timer.timeout.disconnect(_on_wait_event_finished_timeout)
+			return
+
+	if escoria.event_manager.event_finished.is_connected(_on_wait_event_finished):
+		escoria.event_manager.event_finished.disconnect(_on_wait_event_finished)
+
+	fail(
+		"Timed out waiting for escoria.event_manager.event_finished for event '%s'."
+				% event_name
+	)
+
+
+func _on_wait_event_finished(return_code, finished_event_name) -> void:
+	_event_finished_rc = [return_code, finished_event_name]
+
+
+func _on_wait_event_finished_timeout() -> void:
+	_event_finished_timed_out = true
+
+
+func _wait_for_frames(count: int) -> void:
+	for frame in count:
+		await get_tree().process_frame