unit testing of NFT ownership in move

[sweetim]

Describe your question in detail.

i have question about unit testing, i want to test about mint, and make sure the user obtain the NFT object, may i know how can i test it?

since i dont have access to the NFT object
my code is below, how can check if user_1 has the NFT?
https://github.com/sweetim/aptos-counter/blob/master/contract/sources/nft.move#L105

What error, if any, are you getting?

No response

What have you tried or looked at? Or how can we reproduce the error?

i read this guide https://aptos.dev/move/book/unit-testing/, but not much technique on how to test with the new aptos object model

Which operating system are you using?

Linux (Ubuntu, Fedora, Windows WSL, etc.)

Which SDK or tool are you using? (if any)

Move aptos std

Describe your environment or tooling in detail

No response

[kshitijc1506]

You can call the is_owner or owner function in the object.move module.

Here's an example unit test.

[sweetim]

the issue here is i dont have access to the object, how can i test it?

[kshitijc1506]

For DA / your code
In your example, just return the object in your mint function (the nft variable). Use that for testing.

Alternative approach (more generalized)
You can use a named object, retrieve the object address using the seed, and then use address_to_object to gain access to the object.

[sweetim]

for the alternative approach, how can i convert the object to named object? since i have no access to the aptos_stdlib to create that object?

[kshitijc1506]

You can just call object::create_named_object. Here's the function in the object.move module. Here's an example of how to use it.