Tests

1. [Create a window and set up the main scene.](https://github.com/Ethosa/nodesnim/blob/master/tests/test1.nim) 2. [Use Canvas node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test2.nim) 3. [Window events handling.](https://github.com/Ethosa/nodesnim/blob/master/tests/test3.nim) 4. [Use ColorRect node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test4.nim) 5. [Handle Control node events.](https://github.com/Ethosa/nodesnim/blob/master/tests/test5.nim) 6. [Anchor setting.](https://github.com/Ethosa/nodesnim/blob/master/tests/test6.nim) 7. [Change scenes.](https://github.com/Ethosa/nodesnim/blob/master/tests/test7.nim) 8. [Use TextureRect node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test8.nim) 9. [Use Label node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test9.nim) 10. [Use Button node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test10.nim) 11. [Environment setting.](https://github.com/Ethosa/nodesnim/blob/master/tests/test11.nim) 12. [Use Box node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test12.nim) 13. [Use HBox node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test13.nim) 14. [Use VBox node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test14.nim) 15. [Use GridBox node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test15.nim) 16. [Use TextEdit node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test16.nim) 17. [Use RichLabel node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test17.nim) 18. [Duplicate nodes.](https://github.com/Ethosa/nodesnim/blob/master/tests/test18.nim) 19. [Use RichEditText node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test19.nim) 20. [Use Scroll node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test20.nim) 21. [Use ProgressBar node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test21.nim) 22. [Use Slider node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test22.nim) 23. [Use Popup node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test23.nim) 24. [Use AudioStreamPlayer node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test24.nim) 25. [Use Node2D node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test25.nim) 26. [Use Sprite node.](https://github.com/Ethosa/nodesnim/blob/master/tests/test26.nim)