JSTEP 10

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JSTEP-10: Unifying testing structure/tools

Main discussion : https://github.com/FasterXML/jackson/discussions/249

Related change issues

• https://github.com/FasterXML/jackson/discussions/249
• https://github.com/FasterXML/jackson-databind/discussions/4190
• https://github.com/FasterXML/jackson-databind/pulls?q=is:pr+migrate+junit+

Author

Joo Hyuk Kim (@joohyukkim)

Version History

• 2024-12-28 : Initial set-up --skeletal, contents, issues etc...

Background

Currently in Jackson 2, most of modules including core and extensions have test suite shaped in following way.

1. Co-existence of JUnit 4 and JUnit 5
2. Exclude /failing tests using maven-surefire-plugin except jackson-databind module where we have "New failing test management using Jupiter extension" since 2.18 version.

Scope

Scope : changes to make

To keep up with Jackson 3 changes such as baseline version of JDK 17, it would be effective for consistency to implement following in order ....

• Change 1 : Replace JUnit 4 with JUnit 5 usage
  • also, make use of DatabindTestUtil where needed
• Change 2 : Replace maven-surefire-plugin with Jackson's new failing test management

Scope : target modules to apply

Note that modules to remove --or merge to other modules-- starting Jackson 3 will not be included.

Proposed

• jackson-core
• jackson-dataformat-xml
• jackson-datatypes-collections
• jackson-modules-base
• other dataformats modules to be added

Complete

• jackson-databind
  • https://github.com/FasterXML/jackson-databind/pulls?q=is:pr+migrate+junit+ search query), unfortunately didn't make umbrella issue
  • https://github.com/FasterXML/jackson-databind/pull/4696
• jackson-annotations
  • https://github.com/FasterXML/jackson-annotations/issues/247