Realm.schemaVersion returns 18446744073709552000 instead of -1 in test

[Yupeng-li]

How frequently does the bug occur?

Always

Description

I use jest to test the realm related logic. Since Realm v12, some of tests start failing because Realm.schemaVersion doesn't return -1 if realm file doesn't exist. Below is a quick test to show the issue.

expect(Realm.schemaVersion('./default.realm')).toBe(-1)

-------------------------------------
Expected: -1
Received: 18446744073709552000

It works as expected in our react-native app.

Stacktrace & log output

No response

Can you reproduce the bug?

Always

Reproduction Steps

No response

Version

12.1.0

What services are you using?

Local Database only

Are you using encryption?

No

Platform OS and version(s)

Mac OS 13.5.1 (22G90)

Build environment

RN 0.71.13

Cocoapods version

1.12.1

[kneth]

@Yupeng-li I am surprised if the code snippet worked before v12.0.0. schemaVersion is a (read-only) property on a Realm instances, and not a static method.

We have Realm.exists() which is the static method you should use.

[Yupeng-li]

Hi @kneth , it's in the latest version of realm https://github.com/realm/realm-js/blob/main/packages/realm/src/Realm.ts#L378 and it's documented here

Thank you for pointing me to Realm.exists. I can call it before calling schemaVersion to bypass the issue.

[kneth]

@Yupeng-li Sorry, I was too fast to say that schemaVersion cannot be used. We need to write a couple of extra tests - and likely fix a bug.

You can still use Realm.exists.

[Yupeng-li]

@kneth No worries, thank you very much!

[kneth]

@Yupeng-li We have a bug fix in #6126