CAMEL-19343: Added unit test

core/camel-core/src/test/java/org/apache/camel/builder/RouteTemplateChoicePredicateTest.java

@@ -0,0 +1,96 @@
+/*
+ * 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.builder;
+
+import org.apache.camel.ContextTestSupport;
+import org.junit.jupiter.api.Test;
+
+class RouteTemplateChoicePredicateTest extends ContextTestSupport {
+
+    @Test
+    void testRed() throws Exception {
+        TemplatedRouteBuilder.builder(context, "myTemplate")
+                .parameter("start", "start")
+                .parameter("color", "red")
+                .routeId("myRoute")
+                .add();
+
+        getMockEndpoint("mock:other").expectedMessageCount(0);
+        getMockEndpoint("mock:red").expectedMessageCount(1);
+
+        template.sendBody("direct:start", "Hello Red");
+
+        assertMockEndpointsSatisfied();
+    }
+
+    @Test
+    void testBlue() throws Exception {
+        TemplatedRouteBuilder.builder(context, "myTemplate")
+                .parameter("start", "start")
+                .parameter("color", "blue")
+                .routeId("myRoute")
+                .add();
+
+        getMockEndpoint("mock:other").expectedMessageCount(1);
+        getMockEndpoint("mock:red").expectedMessageCount(0);
+
+        template.sendBody("direct:start", "Hello Blue");
+
+        assertMockEndpointsSatisfied();
+    }
+
+    @Test
+    void testRedAndBlue() throws Exception {
+        TemplatedRouteBuilder.builder(context, "myTemplate")
+                .parameter("start", "start1")
+                .parameter("color", "blue")
+                .routeId("myRoute1")
+                .add();
+
+        TemplatedRouteBuilder.builder(context, "myTemplate")
+                .parameter("start", "start2")
+                .parameter("color", "red")
+                .routeId("myRoute2")
+                .add();
+
+        getMockEndpoint("mock:other").expectedMessageCount(1);
+        getMockEndpoint("mock:red").expectedMessageCount(1);
+
+        template.sendBody("direct:start1", "Hello Red");
+        template.sendBody("direct:start2", "Hello Bue");
+
+        assertMockEndpointsSatisfied();
+    }
+
+    @Override
+    protected RouteBuilder createRouteBuilder() throws Exception {
+        return new RouteBuilder() {
+            @Override
+            public void configure() throws Exception {
+                routeTemplate("myTemplate")
+                        .templateParameter("start")
+                        .templateParameter("color")
+                        .from("direct:{{start}}")
+                        .choice()
+                            .when(simple("'{{color}}' == 'red'")).to("mock:red")
+                            .otherwise().to("mock:other")
+                        .end()
+                        .to("mock:end");
+            }
+        };
+    }
+}