loader-java: add test for compiling routes requiring external classes

camel-k-loader-java/src/test/java/org/apache/camel/k/loader/java/RoutesLoaderTest.java

@@ -26,6 +26,7 @@
 import org.apache.camel.k.Source;
 import org.apache.camel.k.Sources;
 import org.apache.camel.k.support.RuntimeSupport;
+import org.apache.camel.model.ModelCamelContext;
 import org.apache.camel.model.ProcessDefinition;
 import org.apache.camel.model.RouteDefinition;
 import org.apache.camel.model.SetBodyDefinition;
@@ -77,6 +78,26 @@ public void testLoadJavaWithRestConfiguration() throws Exception {
         assertThat(context.getRestConfigurations().iterator().next()).hasFieldOrPropertyWithValue("component", "restlet");
     }
 
+    @Test
+    public void testLoadJavaWithModel() throws Exception {
+        CamelContext context = new DefaultCamelContext();
+
+        Source source = Sources.fromURI("classpath:MyRoutesWithModel.java");
+        RoutesLoader loader = RuntimeSupport.loaderFor(new DefaultCamelContext(), source);
+        RouteBuilder builder = loader.load(context, source);
+
+        assertThat(loader).isInstanceOf(JavaSourceRoutesLoader.class);
+        assertThat(builder).isNotNull();
+
+        context.addRoutes(builder);
+
+        assertThat(context.adapt(ModelCamelContext.class).getRestDefinitions()).first().satisfies(definition -> {
+            assertThat(definition.getVerbs()).first().satisfies(verb -> {
+                assertThat(verb).hasFieldOrPropertyWithValue("outType", "org.apache.camel.k.loader.java.model.EmployeeDTO");
+            });
+        });
+    }
+
     @ParameterizedTest
     @MethodSource("parameters")
     public void testLoaders(String location, Class<? extends RoutesLoader> type) throws Exception {

camel-k-loader-java/src/test/java/org/apache/camel/k/loader/java/model/EmployeeDTO.java

@@ -0,0 +1,47 @@
+/*
+ * 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.
+ */
+package org.apache.camel.k.loader.java.model;
+
+public class EmployeeDTO {
+    public int id;
+    public String name;
+    public String org;
+
+    public int getId() {
+        return id;
+    }
+
+    public void setId(int id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getOrg() {
+        return org;
+    }
+
+    public void setOrg(String org) {
+        this.org = org;
+    }
+}

camel-k-loader-java/src/test/resources/MyRoutesWithModel.java

@@ -0,0 +1,32 @@
+/*
+ * 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 org.apache.camel.builder.RouteBuilder;
+
+import  org.apache.camel.k.loader.java.model.EmployeeDTO;
+
+public class MyRoutesWithModel extends RouteBuilder {
+    @Override
+    public void configure() throws Exception {
+        rest("/say")
+            .get("/emp/{id}")
+                .outType(EmployeeDTO.class)
+                .to("direct:getEmployee");
+
+        from("direct:getEmployee")
+            .to("log:getEmployee");
+    }
+}