Add tests for NotifierConfiguration

spring-boot-admin-server/src/test/java/de/codecentric/boot/admin/config/NotifierConfigurationTest.java

+/*
+ * Copyright 2014 the original author or authors.
+ *
+ * Licensed 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 de.codecentric.boot.admin.config;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.Matchers.empty;
+import static org.junit.Assert.assertThat;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+
+import org.junit.After;
+import org.junit.Test;
+import org.springframework.context.annotation.Bean;
+import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
+
+import de.codecentric.boot.admin.event.ClientApplicationEvent;
+import de.codecentric.boot.admin.event.ClientApplicationStatusChangedEvent;
+import de.codecentric.boot.admin.model.Application;
+import de.codecentric.boot.admin.model.StatusInfo;
+import de.codecentric.boot.admin.notify.Notifier;
+
+public class NotifierConfigurationTest {
+	private static final ClientApplicationEvent APP_DOWN = new ClientApplicationStatusChangedEvent(
+			Application.create("App").withId("id-1").withHealthUrl("http://health")
+					.withStatusInfo(StatusInfo.ofDown()).build(),
+			StatusInfo.ofUp(), StatusInfo.ofDown());
+
+	private AnnotationConfigWebApplicationContext context;
+
+	@After
+	public void close() {
+		if (this.context != null) {
+			this.context.close();
+		}
+	}
+
+	@Test
+	public void test_notifierListener() {
+		load(TestNotifierConfig.class);
+		context.publishEvent(APP_DOWN);
+		assertThat(context.getBean(TestNotifier.class).getEvents(), is(Arrays.asList(APP_DOWN)));
+	}
+
+	@Test
+	public void test_no_notifierListener() {
+		load(null);
+		assertThat(context.getBeansOfType(Notifier.class).values(), empty());
+	}
+
+	private void load(Class<?> config) {
+		context = new AnnotationConfigWebApplicationContext();
+		if (config != null) {
+			context.register(config);
+		}
+		context.register(NotifierConfiguration.class);
+		context.refresh();
+	}
+
+	public static class TestNotifierConfig {
+		@Bean
+		public Notifier testNotifier() {
+			return new TestNotifier();
+		}
+
+	}
+
+	private static class TestNotifier implements Notifier {
+		private List<ClientApplicationEvent> events = new ArrayList<ClientApplicationEvent>();
+
+		@Override
+		public void notify(ClientApplicationEvent event) {
+			this.events.add(event);
+		}
+
+		public List<ClientApplicationEvent> getEvents() {
+			return events;
+		}
+	}
+}