Replace univocity-parsers with FastCSV

[marcphilipp]

Unfortunately, univocity-parsers is no longer maintained. While there's is a fork, it's future is unclear.

FastCSV has seen a lot of activity in recent months so we should evaluate if we use it as a replacement. There might be subtle differences how edge cases are handled but we should have good coverage for those in our test suite.

Deliverables

• Implement @CsvSource and @CsvFileSource using FastCSV instead of univocity-parsers

[vdmitrienko]

@marcphilipp can I take a stab?

[marcphilipp]

@vdmitrienko Go for it! 🙂

[vdmitrienko]

@marcphilipp it looks like we can't migrate to FastCSV at the moment - at least not to version 3.x, as it requires Java 11 or higher. Perhaps, we should put this on hold until we migrate to Java 17 #4246

FYI @osiegmar

[marcphilipp]

@vdmitrienko Thanks for taking a closer look! Agreed, let's hold off on this until we start working on 6.0 later this year.

[osiegmar]

I suggest analyzing if any functionality is missing in FastCSV that JUnit requires. This would give me time to design and implement it, ensuring a smooth integration when JUnit 6 development begins.

[vdmitrienko]

I suggest analyzing if any functionality is missing in FastCSV that JUnit requires. This would give me time to design and implement it, ensuring a smooth integration when JUnit 6 development begins.

@marcphilipp, I could give it a try with the JDK17 branch. WDYT?

[sormuras]

Also an option: make it work with FastCSV 2.x and Jupiter 5.x on Java 8 first.

[marcphilipp]

I could give it a try with the JDK17 branch. WDYT?

Good idea! But be prepared that we'll force push that one again at some point.

Also an option: make it work with FastCSV 2.x and Jupiter 5.x on Java 8 first.

I don't think that would be worth the effort but I leave it to @vdmitrienko to decide.

[vdmitrienko]

Also an option: make it work with FastCSV 2.x and Jupiter 5.x on Java 8 first.

Thanks for the suggestion, @sormuras. I initially considered that as well, but since there may be breaking changes between FastCSV 2.x and 3.x, it might be easier to start directly with 3.x.

[bastien707]

Do you know any library that can manage fixed-width files as easily as Univocity Parser (using only annotations, no XML)? Since all FastCSV does not handle fixed-width file

[marcphilipp]

Are you using that with @Csv{File}Source?

[bastien707]

Hum nope, finally I found BeanIO v3 which is compatible annotation only and can handle fixed-width files. The doc here : https://beanio.github.io/