Add tests for AllRequestFilter.FilterProxy
In a follow-up commit, we'll fix AllRequestFilter.FilterProxy's handling of calling init for plugins loaded at runtime. To make sure the fix is not breaking anything, we'll add some tests for the current behaviour of AllRequestFilter.FilterProxy beforehand. Change-Id: I4382f8008e59b4983568ae35b4ccc31e80fe1a71
This commit is contained in:
Christian Aistleitner
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// Copyright (C) 2015 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package com.google.gerrit.httpd;
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import static org.easymock.EasyMock.anyObject;
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import static org.easymock.EasyMock.capture;
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import static org.easymock.EasyMock.eq;
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import static org.easymock.EasyMock.newCapture;
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import com.google.gerrit.extensions.registration.DynamicSet;
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import org.easymock.Capture;
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import org.easymock.EasyMockSupport;
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import org.easymock.IMocksControl;
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import org.junit.Before;
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import org.junit.Test;
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import javax.servlet.FilterChain;
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import javax.servlet.FilterConfig;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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public class AllRequestFilterFilterProxyTest {
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/**
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* Set of filters for FilterProxy
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* <p/>
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* This set is used to as set of filters when fetching an
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* {@link AllRequestFilter.FilterProxy} instance through
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* {@link #getFilterProxy()}.
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*/
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private DynamicSet<AllRequestFilter> filters;
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@Before
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public void setUp() throws Exception {
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// Force starting each test with an initially empty set of filters.
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// Filters get added by the tests themselves.
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filters = new DynamicSet<>();
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}
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// The wrapping of {@link #getFilterProxy()} and
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// {@link #addFilter(AllRequestFilter)} into separate methods may seem
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// overengineered at this point. However, if in the future we decide to not
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// test the inner class directly, but rather test from the outside using
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// Guice Injectors, it is now sufficient to change only those two methods,
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// and we need not mess with the individual tests.
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/**
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* Obtain a FilterProxy with a known DynamicSet of filters
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* <p/>
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* The returned {@link AllRequestFilter.FilterProxy} can have new filters
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* added dynamically by calling {@link #addFilter(AllRequestFilter)}.
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*/
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private AllRequestFilter.FilterProxy getFilterProxy() {
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return new AllRequestFilter.FilterProxy(filters);
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}
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/**
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* Add a filter to created FilterProxy instances
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* <p/>
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* This method adds the given filter to all
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* {@link AllRequestFilter.FilterProxy} instances created by
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* {@link #getFilterProxy()}.
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*/
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private void addFilter(final AllRequestFilter filter) {
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filters.add(filter);
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}
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@Test
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public void testNoFilters() throws Exception {
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EasyMockSupport ems = new EasyMockSupport();
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FilterConfig config = ems.createMock(FilterConfig.class);
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HttpServletRequest req = ems.createMock(HttpServletRequest.class);
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HttpServletResponse res = ems.createMock(HttpServletResponse.class);
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FilterChain chain = ems.createMock(FilterChain.class);
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chain.doFilter(req, res);
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ems.replayAll();
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AllRequestFilter.FilterProxy filterProxy = getFilterProxy();
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filterProxy.init(config);
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filterProxy.doFilter(req, res, chain);
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filterProxy.destroy();
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ems.verifyAll();
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}
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@Test
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public void testSingleFilterNoBubbling() throws Exception {
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EasyMockSupport ems = new EasyMockSupport();
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FilterConfig config = ems.createMock("config", FilterConfig.class);
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HttpServletRequest req = ems.createMock("req", HttpServletRequest.class);
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HttpServletResponse res = ems.createMock("res", HttpServletResponse.class);
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FilterChain chain = ems.createMock("chain", FilterChain.class);
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AllRequestFilter filter = ems.createStrictMock("filter", AllRequestFilter.class);
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filter.init(config);
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filter.doFilter(eq(req), eq(res), anyObject(FilterChain.class));
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filter.destroy();
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ems.replayAll();
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AllRequestFilter.FilterProxy filterProxy = getFilterProxy();
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addFilter(filter);
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filterProxy.init(config);
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filterProxy.doFilter(req, res, chain);
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filterProxy.destroy();
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ems.verifyAll();
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}
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@Test
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public void testSingleFilterBubbling() throws Exception {
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EasyMockSupport ems = new EasyMockSupport();
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FilterConfig config = ems.createMock(FilterConfig.class);
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HttpServletRequest req = ems.createMock(HttpServletRequest.class);
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HttpServletResponse res = ems.createMock(HttpServletResponse.class);
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IMocksControl mockControl = ems.createStrictControl();
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FilterChain chain = mockControl.createMock(FilterChain.class);
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Capture<FilterChain> capturedChain = newCapture();
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AllRequestFilter filter = mockControl.createMock(AllRequestFilter.class);
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filter.init(config);
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filter.doFilter(eq(req), eq(res), capture(capturedChain));
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chain.doFilter(req, res);
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filter.destroy();
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ems.replayAll();
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AllRequestFilter.FilterProxy filterProxy = getFilterProxy();
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addFilter(filter);
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filterProxy.init(config);
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filterProxy.doFilter(req, res, chain);
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capturedChain.getValue().doFilter(req, res);
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filterProxy.destroy();
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ems.verifyAll();
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}
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@Test
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public void testTwoFiltersNoBubbling() throws Exception {
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EasyMockSupport ems = new EasyMockSupport();
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FilterConfig config = ems.createMock(FilterConfig.class);
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HttpServletRequest req = ems.createMock(HttpServletRequest.class);
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HttpServletResponse res = ems.createMock(HttpServletResponse.class);
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IMocksControl mockControl = ems.createStrictControl();
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FilterChain chain = mockControl.createMock(FilterChain.class);
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AllRequestFilter filterA = mockControl.createMock(AllRequestFilter.class);
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AllRequestFilter filterB = mockControl.createMock(AllRequestFilter.class);
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filterA.init(config);
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filterB.init(config);
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filterA.doFilter(eq(req), eq(res), anyObject(FilterChain.class));
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filterA.destroy();
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filterB.destroy();
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ems.replayAll();
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AllRequestFilter.FilterProxy filterProxy = getFilterProxy();
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addFilter(filterA);
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addFilter(filterB);
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filterProxy.init(config);
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filterProxy.doFilter(req, res, chain);
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filterProxy.destroy();
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ems.verifyAll();
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}
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@Test
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public void testTwoFiltersBubbling() throws Exception {
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EasyMockSupport ems = new EasyMockSupport();
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FilterConfig config = ems.createMock(FilterConfig.class);
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HttpServletRequest req = ems.createMock(HttpServletRequest.class);
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HttpServletResponse res = ems.createMock(HttpServletResponse.class);
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IMocksControl mockControl = ems.createStrictControl();
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FilterChain chain = mockControl.createMock(FilterChain.class);
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Capture<FilterChain> capturedChainA = newCapture();
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Capture<FilterChain> capturedChainB = newCapture();
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AllRequestFilter filterA = mockControl.createMock(AllRequestFilter.class);
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AllRequestFilter filterB = mockControl.createMock(AllRequestFilter.class);
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filterA.init(config);
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filterB.init(config);
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filterA.doFilter(eq(req), eq(res), capture(capturedChainA));
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filterB.doFilter(eq(req), eq(res), capture(capturedChainB));
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chain.doFilter(req, res);
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filterA.destroy();
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filterB.destroy();
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ems.replayAll();
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AllRequestFilter.FilterProxy filterProxy = getFilterProxy();
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addFilter(filterA);
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addFilter(filterB);
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filterProxy.init(config);
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filterProxy.doFilter(req, res, chain);
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capturedChainA.getValue().doFilter(req, res);
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capturedChainB.getValue().doFilter(req, res);
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filterProxy.destroy();
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ems.verifyAll();
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}
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}
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