Add coverage for HEAD request

This is cover age for quarkusio/quarkus#43440

http/http-advanced-reactive/src/main/java/io/quarkus/ts/http/advanced/reactive/GreetingResource.java

@@ -1,8 +1,18 @@
 package io.quarkus.ts.http.advanced.reactive;
 
+import jakarta.enterprise.inject.spi.CDI;
+import jakarta.ws.rs.Path;
+
 public class GreetingResource extends GreetingAbstractResource {
     @Override
     public String hello() {
         return "Hello from Quarkus REST";
     }
+
+    @Path("/sub-resource")
+    public GreetingSubResources helloFromSubResource() {
+        return CDI.current()
+                .select(GreetingSubResources.class)
+                .get();
+    }
 }

http/http-advanced-reactive/src/main/java/io/quarkus/ts/http/advanced/reactive/GreetingSubResources.java

@@ -0,0 +1,14 @@
+package io.quarkus.ts.http.advanced.reactive;
+
+import jakarta.enterprise.context.RequestScoped;
+import jakarta.ws.rs.GET;
+
+@RequestScoped
+public class GreetingSubResources {
+
+    @GET
+    public String get() {
+        return "Greeting from sub-resource";
+    }
+
+}

http/http-advanced-reactive/src/test/java/io/quarkus/ts/http/advanced/reactive/BaseHttpAdvancedReactiveIT.java

@@ -102,6 +102,36 @@ public void abstractResourceWithPath() {
                 .body(is("Hello from Quarkus REST"));
     }
 
+    @Test
+    @DisplayName("Test Quarkus REST using CDI getting the sub-resource")
+    void cdiSubResourceGetRequest() {
+        getApp().given()
+                .when().get(GREETING_ENDPOINT + "/sub-resource")
+                .then()
+                .statusCode(SC_OK)
+                .body(is("Greeting from sub-resource"));
+    }
+
+    @Test
+    @Tag("https://github.com/quarkusio/quarkus/pull/43440")
+    @DisplayName("Test Quarkus REST abstract resource with @Path using HEAD request")
+    void headRequestUsingAbstractResourceWithPath() {
+        getApp().given()
+                .when().head(GREETING_ENDPOINT)
+                .then()
+                .statusCode(SC_OK);
+    }
+
+    @Test
+    @Tag("https://github.com/quarkusio/quarkus/pull/43440")
+    @DisplayName("Test Quarkus REST using CDI getting the sub-resource using HEAD request")
+    void cdiSubResourceHeadRequest() {
+        getApp().given()
+                .when().head(GREETING_ENDPOINT + "/sub-resource")
+                .then()
+                .statusCode(SC_OK);
+    }
+
     @Test
     @DisplayName("GRPC Server test")
     public void testGrpc() {