Add dependency to jakarta.annotation-api and more tests

pom.xml

@@ -62,6 +62,14 @@
       <artifactId>guice</artifactId>
       <version>6.0.0</version>
     </dependency>
+    <dependency>
+      <groupId>jakarta.annotation</groupId>
+      <artifactId>jakarta.annotation-api</artifactId>
+      <version>2.1.1</version>
+      <scope>provided</scope>
+      <optional>true</optional>
+    </dependency>
+
     <dependency>
       <groupId>org.junit.jupiter</groupId>
       <artifactId>junit-jupiter-api</artifactId>

src/test/java/org/codehaus/plexus/testing/PlexusTestJakartaTest.java

@@ -23,6 +23,7 @@
 import org.junit.jupiter.api.Test;
 
 import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.junit.jupiter.api.Assertions.assertNull;
 
 @PlexusTest
 class PlexusTestJakartaTest {
@@ -34,6 +35,12 @@ class PlexusTestJakartaTest {
     void dependencyShouldBeInjected() {
         assertNotNull(testJakartaComponent);
         assertNotNull(testJakartaComponent.getTestJakartaComponent2());
+        assertNotNull(testJakartaComponent.getTestJakartaComponent3Named());
+        assertNull(testJakartaComponent.getTestJakartaComponent3NullableJavax());
+        assertNull(testJakartaComponent.getTestJakartaComponent3NullableJakarta());
+
+        assertNotNull(testJakartaComponent.getTestJavaxComponent2());
+        assertNotNull(testJakartaComponent.getTestJavaxComponent2());
         assertNotNull(testJakartaComponent.getTestJavaxComponent2());
     }
 }

src/test/java/org/codehaus/plexus/testing/TestJakartaComponent.java

@@ -19,6 +19,7 @@
  * under the License.
  */
 
+import jakarta.annotation.Nonnull;
 import jakarta.inject.Inject;
 import jakarta.inject.Named;
 
@@ -30,11 +31,38 @@ public class TestJakartaComponent {
     @Inject
     private TestJakartaComponent2 testJakartaComponent2;
 
+    @Inject
+    @Nonnull
+    @Named("someComponent")
+    private TestJakartaComponent3 testJakartaComponent3Named;
+
+    @Inject
+    @javax.annotation.Nullable
+    @Named("someComponentNotExisting")
+    private TestJakartaComponent3 testJakartaComponent3NullableJavax;
+
+    @Inject
+    @jakarta.annotation.Nullable
+    @Named("someComponentNotExisting")
+    private TestJakartaComponent3 testJakartaComponent3NullableJakarta;
+
     public TestJavaxComponent2 getTestJavaxComponent2() {
         return testJavaxComponent2;
     }
 
     public TestJakartaComponent2 getTestJakartaComponent2() {
         return testJakartaComponent2;
     }
+
+    public TestJakartaComponent3 getTestJakartaComponent3Named() {
+        return testJakartaComponent3Named;
+    }
+
+    public TestJakartaComponent3 getTestJakartaComponent3NullableJavax() {
+        return testJakartaComponent3NullableJavax;
+    }
+
+    public TestJakartaComponent3 getTestJakartaComponent3NullableJakarta() {
+        return testJakartaComponent3NullableJakarta;
+    }
 }

src/test/java/org/codehaus/plexus/testing/TestJakartaComponent3.java

@@ -0,0 +1,25 @@
+package org.codehaus.plexus.testing;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import javax.inject.Named;
+
+@Named("someComponent")
+public class TestJakartaComponent3 {}