JUnit 5 ebuild Repository for Gentoo

This is an ebuild repository for prototyping, development, and testing of JUnit 5 support for Gentoo packages. Right now, it contains:

• An experimental eclass java-pkg-junit-5.eclass, which allows an ebuild to run a Java package's tests using JUnit 5.
• Some ebuilds that need JUnit 5 for running tests and therefore use java-pkg-junit-5.eclass. These ebuilds also act as test cases for java-pkg-junit-5.eclass.

This ebuild repository should be considered to be in the alpha stage. Packages may be removed, and incompatible eclass changes may occur at any time.

Stages of Work

• Add JUnit 5 to the Gentoo repository (https://bugs.gentoo.org/839687)
• Add JUnit 5 support to eclasses (https://bugs.gentoo.org/839681)
  • Determine keys for JUnit Jupiter in JAVA_TESTING_FRAMEWORKS
    • junit-jupiter or junit-5?
    • Support for junit-vintage as a substitute of junit-4? (Issue)
• Enable test for ebuilds that need JUnit 5 for running tests (https://bugs.gentoo.org/829072)

Using JUnit 5 from an ebuild That Uses java-pkg-simple.eclass

To use JUnit 5 from an ebuild that inherits java-pkg-simple.eclass, please make the following modifications to the ebuild:

1. If the ebuild is not using EAPI 8, make sure it does so.

   -EAPI=7
   +EAPI=8

2. If the ebuild does not include the test USE flag in the JAVA_PKG_IUSE variable, make sure it does so. In addition, ensure the JAVA_TESTING_FRAMEWORKS variable's value is not empty (it needs not contain any special value like junit-jupiter or junit-5).

   -JAVA_PKG_IUSE="doc source"
   +JAVA_PKG_IUSE="doc source test"
   +JAVA_TESTING_FRAMEWORKS="foo"
   
    inherit java-pkg-2 java-pkg-simple

3. Inherit the eclass without removing inheritance of any other eclass.

   -inherit java-pkg-2 java-pkg-simple
   +inherit java-pkg-2 java-pkg-simple java-pkg-junit-5

4. If the ebuild overrides pkg_setup, ensure that its pkg_setup calls java-pkg-junit-5_pkg_setup. Note that java-pkg-junit-5_pkg_setup may replace any occurrence of java-pkg-2_pkg_setup.

    pkg_setup() {
   -	java-pkg-2_pkg_setup
   +	java-pkg-junit-5_pkg_setup
    }

5. If the ebuild makes any calls to java-pkg-simple_src_test, replace them with java-pkg-junit-5_src_test.

   -	java-pkg-simple_src_test
   +	java-pkg-junit-5_src_test