WELD-2794 Add an automated test covering a related issue

tests-arquillian/src/test/java/org/jboss/weld/tests/accessibility/bce/BceInLibTest.java

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+package org.jboss.weld.tests.accessibility.bce;
+
+import static org.junit.Assert.assertTrue;
+
+import jakarta.enterprise.inject.Instance;
+import jakarta.enterprise.inject.build.compatible.spi.BuildCompatibleExtension;
+
+import jakarta.inject.Inject;
+import org.jboss.arquillian.container.test.api.Deployment;
+import org.jboss.arquillian.junit.Arquillian;
+import org.jboss.shrinkwrap.api.BeanDiscoveryMode;
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.jboss.shrinkwrap.api.spec.WebArchive;
+import org.jboss.shrinkwrap.impl.BeansXml;
+import org.jboss.weld.test.util.Utils;
+import org.jboss.weld.tests.accessibility.bce.lib.MyBeanCreator;
+import org.jboss.weld.tests.accessibility.bce.lib.MyBce;
+import org.jboss.weld.tests.accessibility.bce.lib.SomeType;
+import org.jboss.weld.tests.category.Integration;
+import org.junit.Test;
+import org.junit.experimental.categories.Category;
+import org.junit.runner.RunWith;
+
+/**
+ * Tests a scenario in which an application (WAR) has a library (/lib) which isn't a bean archive but has registered BCE.
+ * While such BCE creates synth bean, its {@code Instance} should be able to access beans from the application (WAR)
+ */
+@RunWith(Arquillian.class)
+@Category(Integration.class)
+public class BceInLibTest {
+
+    @Deployment
+    public static WebArchive getDeployment() {
+        WebArchive war = ShrinkWrap
+                .create(WebArchive.class, Utils.getDeploymentNameAsHash(BceInLibTest.class, Utils.ARCHIVE_TYPE.WAR))
+                .addClasses(MyBean.class)
+                .addAsWebInfResource(new BeansXml(BeanDiscoveryMode.ANNOTATED), "beans.xml");
+        // archive with extension and no beans.xml == not a bean archive
+        JavaArchive lib = ShrinkWrap.create(JavaArchive.class)
+                .addClasses(MyBce.class, MyBeanCreator.class, SomeType.class)
+                .addAsServiceProvider(BuildCompatibleExtension.class, MyBce.class);
+        return war.addAsLibrary(lib);
+    }
+
+    @Inject
+    Instance<Object> instance;
+
+    @Test
+    public void testVisibility() {
+        // assert dummy bean is available
+        assertTrue(instance.select(MyBean.class).isResolvable());
+        // assert we can select type added through BCE from here
+        assertTrue(instance.select(SomeType.class).isResolvable());
+    }
+
+}

tests-arquillian/src/test/java/org/jboss/weld/tests/accessibility/bce/MyBean.java

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+package org.jboss.weld.tests.accessibility.bce;
+
+import jakarta.enterprise.context.ApplicationScoped;
+
+@ApplicationScoped
+public class MyBean {
+}

tests-arquillian/src/test/java/org/jboss/weld/tests/accessibility/bce/lib/MyBce.java

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+package org.jboss.weld.tests.accessibility.bce.lib;
+
+import jakarta.enterprise.context.Dependent;
+import jakarta.enterprise.inject.build.compatible.spi.BuildCompatibleExtension;
+import jakarta.enterprise.inject.build.compatible.spi.Synthesis;
+import jakarta.enterprise.inject.build.compatible.spi.SyntheticComponents;
+
+public class MyBce implements BuildCompatibleExtension {
+
+
+    @Synthesis
+    public void registerSynthBean(SyntheticComponents syntheticComponents) {
+        syntheticComponents.addBean(SomeType.class)
+                .type(SomeType.class)
+                .createWith(MyBeanCreator.class)
+                .scope(Dependent.class);
+    }
+}

tests-arquillian/src/test/java/org/jboss/weld/tests/accessibility/bce/lib/MyBeanCreator.java

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+package org.jboss.weld.tests.accessibility.bce.lib;
+
+import static org.junit.Assert.assertTrue;
+
+import jakarta.enterprise.inject.Instance;
+import jakarta.enterprise.inject.build.compatible.spi.Parameters;
+import jakarta.enterprise.inject.build.compatible.spi.SyntheticBeanCreator;
+import org.jboss.weld.tests.accessibility.bce.MyBean;
+
+public class MyBeanCreator implements SyntheticBeanCreator<SomeType> {
+    @Override
+    public SomeType create(Instance<Object> lookup, Parameters params) {
+        // assert that Instance provided here (BCE in non bean archive lib) can "see" MyBean
+        assertTrue(lookup.select(MyBean.class).isResolvable());
+        return new SomeType();
+    }
+}

tests-arquillian/src/test/java/org/jboss/weld/tests/accessibility/bce/lib/SomeType.java

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+package org.jboss.weld.tests.accessibility.bce.lib;
+
+public class SomeType {
+}