/*
* 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;
import java.lang.reflect.Field;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletContextEvent;
import org.springframework.test.util.ReflectionTestUtils;
import org.springframework.util.ReflectionUtils;
import com.netflix.zuul.FilterLoader;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.filters.FilterRegistry;
import com.netflix.zuul.monitoring.CounterFactory;
import com.netflix.zuul.monitoring.TracerFactory;
import org.junit.Test;
import java.lang.reflect.Constructor;
import static org.assertj.core.api.Assertions.assertThat;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.mock;
public class ZuulFilterInitializerTests {
private static final ServletContextEvent DUMMY_SERVLET_CONTEXT_EVENT = mock(
ServletContextEvent.class);
private Map<String, ZuulFilter> filters = getFilters();
private CounterFactory counterFactory = mock(CounterFactory.class);
private TracerFactory tracerFactory = mock(TracerFactory.class);
private FilterLoader filterLoader = new FilterLoader();
private FilterRegistry filterRegistry = getFilterRegistry();
private final ZuulFilterInitializer initializer = new ZuulFilterInitializer(filters,
counterFactory, tracerFactory, filterLoader, filterRegistry);
@Test
public void shouldSetupOnContextInitializedEvent() throws Exception {
initializer.contextInitialized(DUMMY_SERVLET_CONTEXT_EVENT);
assertEquals(tracerFactory, TracerFactory.instance());
assertEquals(counterFactory, CounterFactory.instance());
assertThat(filterRegistry.getAllFilters())
.containsAll(filters.values());
}
@Test
public void shouldCleanupOnContextDestroyed() throws Exception {
initializer.contextDestroyed(DUMMY_SERVLET_CONTEXT_EVENT);
assertEquals(null, ReflectionTestUtils.getField(TracerFactory.class, "INSTANCE"));
assertEquals(null,
ReflectionTestUtils.getField(CounterFactory.class, "INSTANCE"));
assertTrue(FilterRegistry.instance().getAllFilters().isEmpty());
assertTrue(getHashFiltersByType().isEmpty());
}
private Map getHashFiltersByType() {
Field field = ReflectionUtils.findField(FilterLoader.class, "hashFiltersByType");
ReflectionUtils.makeAccessible(field);
return (Map) ReflectionUtils.getField(field, FilterLoader.getInstance());
}
private Map<String, ZuulFilter> getFilters() {
Map<String, ZuulFilter> filters = new HashMap<>();
filters.put("key1", mock(ZuulFilter.class));
filters.put("key2", mock(ZuulFilter.class));
return filters;
}
private FilterRegistry getFilterRegistry() {
try {
Constructor<FilterRegistry> constructor = FilterRegistry.class
.getDeclaredConstructor(new Class[0]);
constructor.setAccessible(true);
return constructor.newInstance(new Object[0]);
}
catch (Exception e) {
throw new RuntimeException(e);
}
}
}