Code indentation for declaring inputs/outputs in an array
An argument against table-style alignment in code

Except when the editor/IDE helps maintain alignment with little work from the programmer, and all those who work with the code have that same facility, horizontal, table-like alignment in code is more trouble than it's worth, for these reasons:


Search/replace operations on the entire code-base (as when renaming a variable or method) will tend to leave such code in a mess that needs manual cleanup.
Anyone whose editor/IDE does not make horizontal alignment easy will spend a lot of time hitting space or DEL to make things line up when adding or deleting an entry.
When the entire table needs to be realigned (as when adding a new row that causes a column to grow), the version control system will show that the entire table changed.


For those reasons, I'm inclined to put up with a little bit of ugly:

 var equals = [ //input, output
   ["name:(John Smith)", "name:(John~ Smith~)"],
   ["name:Jon~0.1", "name:Jon~0.1"],
   //...
 ];


or, as @ChrisW suggests:

 var equals = [ //input, output
   [
     "name:(John Smith)",
     "name:(John~ Smith~)"
   ],
   [
     "name:Jon~0.1",
     "name:Jon~0.1"
   ],
   //...
 ];


But maybe data doesn't want to be in the code

Sometimes data wants its own home, a place where "rows and columns" are more natural than in code.  Perhaps that's a table in the database.  In your case, where the table is input to a test, a .csv file might be good.  A non-technical user could then view and edit the data with a spreadsheet program.