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Changes between Initial Version and Version 3 of Ticket #47958

initial	v3
1		`wp_get_upload_dir()` returns the theoretical path of the uploads directory. When there was no upload yet the test returns an incorrect result (not writeable) because the directory doesn't exist.
	1	`wp_get_upload_dir()` returns the theoretical path of the uploads directory. When there was no upload yet the test returns an incorrect result (not writeable) because the directory doesn't exist.
2	2
3	3	Switching to `wp_upload_dir()`, which creates the directory on the fly, ensures a proper test result.