Maven Extension Test

Test the differences of behavior of Maven Extension APIs between Plexus and JSR-330/Sisu

Maven Extension API	Maven Event	Extension loading mechanism
		${maven.home}/lib/ext	mvn -Dmaven.ext.class.path=	pom.xml's <extensions>	.mvn/extensions.xml
JSR330	AbstractExecutionListener	🔴	🔴	🔴	🔴
JSR330	AbstractMavenLifecycleParticipant#afterSessionStart	🟢	🟢	🔴	🟢
JSR330	AbstractMavenLifecycleParticipant#afterProjectsRead	🟢	🟢	🟢	🟢
JSR330	AbstractMavenLifecycleParticipant#afterSessionEnd	🟢	🟢	🟢	🟢
JSR330	AbstractEventSpy#init	🟢	🟢	🔴	🟢
JSR330	AbstractEventSpy#onEvent	🟢	🟢	🔴	🟢
JSR330	AbstractEventSpy#close	🟢	🟢	🔴	🟢
Plexus	AbstractExecutionListener	🔴	🔴	🔴	🔴
Plexus	AbstractMavenLifecycleParticipant#afterSessionStart	🟢	🟢	🔴	🟢
Plexus	AbstractMavenLifecycleParticipant#afterProjectsRead	🟢	🟢	🟢	🟢
Plexus	AbstractMavenLifecycleParticipant#afterSessionEnd	🟢	🟢	🟢	🟢
Plexus	AbstractEventSpy#init	🟢	🟢	🔴	🟢
Plexus	AbstractEventSpy#onEvent	🟢	🟢	🔴	🟢
Plexus	AbstractEventSpy#close	🟢	🟢	🔴	🟢

• Documentation
  • https://maven.apache.org/maven-jsr330.html
  • https://github.com/eclipse/sisu.plexus/wiki/Plexus-to-JSR330
• The maven-sisu-plugin with @Named and @Inject just generates META-INF/sisu/javax.inject.Named
• When in the past, the plexus-component-metadata:generate-metadata did generate META-INF/plexus/components.xml
• Don't forget to update META-INF/maven/extension.xml, see https://maven.apache.org/ref/3.9.6/maven-core/extension.html