WeldJUnit

FooBean.java

package com.test.weld;

import javax.ejb.Stateless;

@Stateless
public class FooBean {
  public void foo() {
    System.out.println(this.getClass() + " - " + this.toString());
  }
}

FooTest.java

package com.test.weld;

import org.jboss.weld.junit5.EnableWeld;
import org.jboss.weld.junit5.WeldInitiator;
import org.jboss.weld.junit5.WeldSetup;
import org.junit.jupiter.api.Test;

import javax.enterprise.inject.Instance;
import javax.inject.Inject;

@EnableWeld
public class FooTest {

  @WeldSetup public WeldInitiator weld = WeldInitiator.of(FooBean.class, SubFooBean.class);

  @Inject
  Instance<FooBean> fooInstances;

  @Test
  public void myTest() {
    for (FooBean foo : fooInstances) {
      foo.foo();
    }
  }
}

Output.txt

jan. 15, 2021 1:27:25 PM org.jboss.weld.bootstrap.WeldStartup <clinit>
INFO: WELD-000900: 3.1.6 (Final)
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.jboss.weld.util.bytecode.ClassFileUtils$1 (file:/C:/Users/Michael/.m2/repository/org/jboss/weld/weld-core-impl/3.1.6.Final/weld-core-impl-3.1.6.Final.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of org.jboss.weld.util.bytecode.ClassFileUtils$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
jan. 15, 2021 1:27:25 PM org.jboss.weld.bootstrap.WeldStartup startContainer
INFO: WELD-000101: Transactional services not available. Injection of @Inject UserTransaction not available. Transactional observers will be invoked synchronously.
jan. 15, 2021 1:27:26 PM org.jboss.weld.environment.se.WeldContainer fireContainerInitializedEvent
INFO: WELD-ENV-002003: Weld SE container 5138d548-dc88-462b-83d6-035725893be3 initialized
class com.test.weld.SubFooBean - com.test.weld.SubFooBean@319dead1
class com.test.weld.FooBean - com.test.weld.FooBean@a7e2d9d
jan. 15, 2021 1:27:26 PM org.jboss.weld.environment.se.WeldContainer shutdown
INFO: WELD-ENV-002001: Weld SE container 5138d548-dc88-462b-83d6-035725893be3 shut down

SubFooBean.java

package com.test.weld;

import javax.ejb.Stateless;

@Stateless
public class SubFooBean extends FooBean {

}