org.springframework.cloud.netflix.zuul.test.ZuulApacheHttpClientConfigurationTests.java Source code

Introduction

Here is the source code for org.springframework.cloud.netflix.zuul.test.ZuulApacheHttpClientConfigurationTests.java

Source

/*
 * Copyright 2013-2017 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.netflix.zuul.test;

import java.io.IOException;
import java.lang.reflect.Field;
import java.util.ArrayList;

import org.apache.http.Header;
import org.apache.http.StatusLine;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.message.BasicHeader;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.MockingDetails;
import org.mockito.Mockito;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringBootConfiguration;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.cloud.commons.httpclient.ApacheHttpClientFactory;
import org.springframework.cloud.commons.httpclient.DefaultApacheHttpClientFactory;
import org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClient;
import org.springframework.cloud.netflix.ribbon.support.RibbonCommandContext;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.cloud.netflix.zuul.filters.route.SimpleHostRoutingFilter;
import org.springframework.cloud.netflix.zuul.filters.route.apache.HttpClientRibbonCommand;
import org.springframework.cloud.netflix.zuul.filters.route.apache.HttpClientRibbonCommandFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.ReflectionUtils;

import static org.junit.Assert.assertTrue;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.mockingDetails;

/**
 * @author Ryan Baxter
 */
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(properties = { "ribbon.eureka.enabled = false" })
@DirtiesContext
public class ZuulApacheHttpClientConfigurationTests {

    @Autowired
    SimpleHostRoutingFilter simpleHostRoutingFilter;

    @Autowired
    HttpClientRibbonCommandFactory httpClientRibbonCommandFactory;

    @Test
    public void testHttpClientSimpleHostRoutingFilter() {
        CloseableHttpClient httpClient = getField(simpleHostRoutingFilter, "httpClient");
        MockingDetails httpClientDetails = mockingDetails(httpClient);
        assertTrue(httpClientDetails.isMock());
    }

    @Test
    public void testRibbonLoadBalancingHttpClient() {
        RibbonCommandContext context = new RibbonCommandContext("foo", " GET", "http://localhost", false,
                new LinkedMultiValueMap<>(), new LinkedMultiValueMap<>(), null, new ArrayList<>(), 0l);
        HttpClientRibbonCommand command = httpClientRibbonCommandFactory.create(context);
        RibbonLoadBalancingHttpClient ribbonClient = command.getClient();
        CloseableHttpClient httpClient = getField(ribbonClient, "delegate");
        MockingDetails httpClientDetails = mockingDetails(httpClient);
        assertTrue(httpClientDetails.isMock());
    }

    @SuppressWarnings("unchecked")
    protected <T> T getField(Object target, String name) {
        Field field = ReflectionUtils.findField(target.getClass(), name);
        ReflectionUtils.makeAccessible(field);
        Object value = ReflectionUtils.getField(field, target);
        return (T) value;
    }

    @SpringBootConfiguration
    @EnableAutoConfiguration
    @EnableZuulProxy
    static class TestConfig {

        static class MyApacheHttpClientFactory extends DefaultApacheHttpClientFactory {
            @Override
            public HttpClientBuilder createBuilder() {
                CloseableHttpClient client = mock(CloseableHttpClient.class);
                CloseableHttpResponse response = mock(CloseableHttpResponse.class);
                StatusLine statusLine = mock(StatusLine.class);
                doReturn(200).when(statusLine).getStatusCode();
                Mockito.doReturn(statusLine).when(response).getStatusLine();
                Header[] headers = new BasicHeader[0];
                doReturn(headers).when(response).getAllHeaders();
                try {
                    Mockito.doReturn(response).when(client).execute(any(HttpUriRequest.class));
                } catch (IOException e) {
                    e.printStackTrace();
                }
                HttpClientBuilder builder = mock(HttpClientBuilder.class);
                Mockito.doReturn(client).when(builder).build();
                return builder;
            }
        }

        @Bean
        public ApacheHttpClientFactory apacheHttpClientFactory() {
            return new MyApacheHttpClientFactory();
        }
    }

}