Adds minimal testing of configuration of netty HttpClient

spring-cloud-gateway-core/src/test/java/org/springframework/cloud/gateway/config/GatewayAutoConfigurationTests.java

@@ -0,0 +1,84 @@
+/*
+ * Copyright 2013-2018 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 org.springframework.cloud.gateway.config;
+
+import io.netty.handler.ssl.SslContext;
+import org.junit.Test;
+import reactor.ipc.netty.http.client.HttpClient;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.web.reactive.WebFluxAutoConfiguration;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import reactor.ipc.netty.http.client.HttpClientOptions;
+import reactor.ipc.netty.options.ClientProxyOptions;
+import reactor.ipc.netty.resources.PoolResources;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class GatewayAutoConfigurationTests {
+
+	@Test
+	public void nettyHttpClientDefaults() {
+		new ReactiveWebApplicationContextRunner()
+				.withConfiguration(AutoConfigurations.of(WebFluxAutoConfiguration.class,
+						GatewayAutoConfiguration.class))
+				.withPropertyValues("debug=true")
+				.run(context -> {
+					assertThat(context).hasSingleBean(HttpClient.class);
+					HttpClient httpClient = context.getBean(HttpClient.class);
+					HttpClientOptions options = httpClient.options();
+
+					PoolResources poolResources = options.getPoolResources();
+					assertThat(poolResources).isNotNull();
+					//TODO: howto test PoolResources
+
+					ClientProxyOptions proxyOptions = options.getProxyOptions();
+					assertThat(proxyOptions).isNull();
+
+					SslContext sslContext = options.sslContext();
+					assertThat(sslContext).isNull();
+				});
+	}
+
+	@Test
+	public void nettyHttpClientConfigured() {
+		new ReactiveWebApplicationContextRunner()
+				.withConfiguration(AutoConfigurations.of(WebFluxAutoConfiguration.class,
+						GatewayAutoConfiguration.class))
+				.withPropertyValues("spring.cloud.gateway.httpclient.ssl.use-insecure-trust-manager=true",
+						"spring.cloud.gateway.httpclient.pool.type=fixed",
+						"spring.cloud.gateway.httpclient.proxy.host=myhost")
+				.run(context -> {
+					assertThat(context).hasSingleBean(HttpClient.class);
+					HttpClient httpClient = context.getBean(HttpClient.class);
+					HttpClientOptions options = httpClient.options();
+
+					PoolResources poolResources = options.getPoolResources();
+					assertThat(poolResources).isNotNull();
+					//TODO: howto test PoolResources
+
+					ClientProxyOptions proxyOptions = options.getProxyOptions();
+					assertThat(proxyOptions).isNotNull();
+					assertThat(proxyOptions.getAddress().get().getHostName()).isEqualTo("myhost");
+
+					SslContext sslContext = options.sslContext();
+					assertThat(sslContext).isNotNull();
+					//TODO: howto test SslContext
+				});
+	}
+}