format: support black >=24

[airwoodix]

Fixes #1821

In black >= 24, string processing requires --preview and either all --unstable features, or explicitly enabling string_processing in the unstable features (using --enable-unstable-feature).

There are modifications to the black style between versions 23 and 24, such that the snapshot tests are failing with black 24.1.0. The development dependency is therefore still pinned to version 23.x.y.
@koxudaxi is there a mechanism to test against multiple versions of black (and adapt the snapshots)?

I guess that this code will get reworked or deprecated when #1643 is implemented?

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

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[codspeed-hq]

CodSpeed Performance Report

Merging #1829 will not alter performance

_{Comparing airwoodix:fix-1821 (bc2027b) with main (1320fcb)}

Summary

✅ 29 untouched benchmarks

[koxudaxi]

@airwoodix
Thank you for creating the PR 😄

@koxudaxi is there a mechanism to test against multiple versions of black (and adapt the snapshots)

At least on CI, you can set the version matrix here.

datamodel-code-generator/.github/workflows/test.yml

Line 16 in 480779e

black-version: [22.1.0, default]

I guess that this code will get reworked or deprecated when #1643 is implemented?

In the distant future, yes.
However, this project is trying to change the existing behavior as little as possible to reduce the maintenance load on users when the version is updated.
In other words, this PR will continue to be useful for a while.

[koxudaxi]

@airwoodix
I have added the black version patterns for 24.1.0.
https://github.com/koxudaxi/datamodel-code-generator/pull/1829/files#diff-faff1af3d8ff408964a57b2e475f69a6b7c7b71c9978cccc8f471798caac2c88R24-R33

We should add a unit test for 24.1.0 or later and skip the existing test when 24.1.0 is installed.

[airwoodix]

@koxudaxi awesome, thanks a lot for the fast merge and the tests adjustments!