update: adds testing for CELL, INFO, N, SHEET and SHEETS

[elsaminsut]

This PR adds testing for the CELL, INFO, N, SHEET and SHEETS functions. These include both xlsx tests with edge cases and unit tests to check the number of arguments taken by the function. It also includes an update to the main Information documentation page and their individual pages to show them as now available.

This PR closes #515

(See failing edge cases in #533)

[nhatcher]

Hi @elsaminsut ,

Thanks for this! Do you think you can split the test file in 3 different ones?
N
Shheet and sheets
Cell

I think it is fine to group functions together if they belong together. Also if there are already some other files with smoke tests that are already covered here you can delete them

[elsaminsut]

Hi @elsaminsut ,

Thanks for this! Do you think you can split the test file in 3 different ones?

N

Shheet and sheets

Cell

I think it is fine to group functions together if they belong together. Also if there are already some other files with smoke tests that are already covered here you can delete them

You can see the failing tests split per function in #533

[nhatcher]

You can see the failing tests split per function in #533

Thanks. In this PR can you split the test case in different files also?
Ideally we would have 1 file per functions.

[elsaminsut]

You can see the failing tests split per function in #533

Thanks. In this PR can you split the test case in different files also? Ideally we would have 1 file per functions.

Fixed!