Categories under test

Live critical:

1.       Create a category.

2.       Try to create a category with an empty title.

3.       Cancel category creation with an empty title.

4.       Cancel category creation with a valid title.

5.       Edit a category, change name only.

6.       Edit a category, change color only.

7.       Edit a category, change name and color.

8.       Cancel a category editing.

9.       Delete a category.

Other:

10.   Try to create a category with the name longer than 256 characters.

11.   Create a category with some Unicode characters.

12.   Open a category editor from manually created URL, ID set to non-existing value. Should work the same a new category creation.

13.   Open a category editor from manually created URL, invalid ID. Should redirect to an error page.