customSnapshotsDir as function

[satispunk]

Would be good to have customSnapshotsDir specified as function

{ customSnapshotsDir: ({currentTestName, testPath}) => buildCustomSnapshotDirOnTheFly(currentTestName, testPath) }

so it is possible to generated path on the fly depending on testName, testPath and env variables

Use cases:

1. Keep test folder structure in images folder. (I guess this can be even a separate option like "keepFolderStructure")
2. Possible to use env variables, the same tests may produce different screenshots depending on env. IN my case: run the same test for components but different theme. Theme is set as env variable.

[jacobweber]

Same would be useful for customSnapshotIdentifier.

[anescobar1991]

Resolved by #140.

[jepstein-eagle]

This issue is marked resolved by #140. That does help by allowing us to customize the customSnapshotIdentifier. However, we can not use a function to configure the snapshots directory, as would allow for some additional use use-cases.

Can we enable the customSnapshotsDirto use a similar function?

[anescobar1991]

Yeah feel free to open a PR implementing that!