/**
* Copyright (C) 2008 Google Inc.
*
* 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 com.google.inject.servlet;
import com.google.inject.Binding;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Provider;
import com.google.inject.TypeLiteral;
import com.google.inject.internal.util.ImmutableList;
import com.google.inject.internal.util.Maps;
import com.google.inject.internal.util.Sets;
import com.google.inject.spi.BindingScopingVisitor;
import com.google.inject.util.Providers;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.UUID;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import junit.framework.TestCase;
import static com.google.inject.servlet.ManagedServletPipeline.REQUEST_DISPATCHER_REQUEST;
import static org.easymock.EasyMock.anyObject;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.eq;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.expectLastCall;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;
/**
* Tests forwarding and inclusion (RequestDispatcher actions from the
* servlet spec).
*
* @author Dhanji R. Prasanna (dhanji@gmail com)
*/
public class ServletPipelineRequestDispatcherTest extends TestCase {
private static final Key<HttpServlet> HTTP_SERLVET_KEY = Key.get(HttpServlet.class);
private static final String A_KEY = "thinglyDEgintly" + new Date() + UUID.randomUUID();
private static final String A_VALUE = ServletPipelineRequestDispatcherTest.class.toString()
+ new Date() + UUID.randomUUID();
public final void testIncludeManagedServlet() throws IOException, ServletException {
String pattern = "blah.html";
final ServletDefinition servletDefinition = new ServletDefinition(pattern,
Key.get(HttpServlet.class), UriPatternType.get(UriPatternType.SERVLET, pattern),
new HashMap<String, String>(), null);
final Injector injector = createMock(Injector.class);
final Binding binding = createMock(Binding.class);
final HttpServletRequest requestMock = createMock(HttpServletRequest.class);
expect(requestMock.getAttribute(A_KEY))
.andReturn(A_VALUE);
requestMock.setAttribute(REQUEST_DISPATCHER_REQUEST, true);
requestMock.removeAttribute(REQUEST_DISPATCHER_REQUEST);
final boolean[] run = new boolean[1];
final HttpServlet mockServlet = new HttpServlet() {
protected void service(HttpServletRequest request, HttpServletResponse httpServletResponse)
throws ServletException, IOException {
run[0] = true;
final Object o = request.getAttribute(A_KEY);
assertEquals("Wrong attrib returned - " + o, A_VALUE, o);
}
};
expect(binding.acceptScopingVisitor((BindingScopingVisitor) anyObject()))
.andReturn(true);
expect(injector.getBinding(Key.get(HttpServlet.class)))
.andReturn(binding);
expect(injector.getInstance(HTTP_SERLVET_KEY))
.andReturn(mockServlet);
final Key<ServletDefinition> servetDefsKey = Key
.get(TypeLiteral.get(ServletDefinition.class));
Binding<ServletDefinition> mockBinding = createMock(Binding.class);
expect(injector.findBindingsByType(eq(servetDefsKey.getTypeLiteral())))
.andReturn(ImmutableList.<Binding<ServletDefinition>>of(mockBinding));
Provider<ServletDefinition> bindingProvider = Providers.of(servletDefinition);
expect(mockBinding.getProvider())
.andReturn(bindingProvider);
replay(injector, binding, requestMock, mockBinding);
// Have to init the Servlet before we can dispatch to it.
servletDefinition.init(null, injector,
Sets.newSetFromMap(Maps.<HttpServlet, Boolean>newIdentityHashMap()));
final RequestDispatcher dispatcher = new ManagedServletPipeline(
injector)
.getRequestDispatcher(pattern);
assertNotNull(dispatcher);
dispatcher.include(requestMock, createMock(HttpServletResponse.class));
assertTrue("Include did not dispatch to our servlet!", run[0]);
verify(injector, requestMock, mockBinding);
}
public final void testForwardToManagedServlet() throws IOException, ServletException {
String pattern = "blah.html";
final ServletDefinition servletDefinition = new ServletDefinition(pattern,
Key.get(HttpServlet.class), UriPatternType.get(UriPatternType.SERVLET, pattern),
new HashMap<String, String>(), null);
final Injector injector = createMock(Injector.class);
final Binding binding = createMock(Binding.class);
final HttpServletRequest requestMock = createMock(HttpServletRequest.class);
final HttpServletResponse mockResponse = createMock(HttpServletResponse.class);
expect(requestMock.getAttribute(A_KEY))
.andReturn(A_VALUE);
requestMock.setAttribute(REQUEST_DISPATCHER_REQUEST, true);
requestMock.removeAttribute(REQUEST_DISPATCHER_REQUEST);
expect(mockResponse.isCommitted())
.andReturn(false);
mockResponse.resetBuffer();
expectLastCall().once();
final List<String> paths = new ArrayList<String>();
final HttpServlet mockServlet = new HttpServlet() {
protected void service(HttpServletRequest request, HttpServletResponse httpServletResponse)
throws ServletException, IOException {
paths.add(request.getRequestURI());
final Object o = request.getAttribute(A_KEY);
assertEquals("Wrong attrib returned - " + o, A_VALUE, o);
}
};
expect(binding.acceptScopingVisitor((BindingScopingVisitor) anyObject()))
.andReturn(true);
expect(injector.getBinding(Key.get(HttpServlet.class)))
.andReturn(binding);
expect(injector.getInstance(HTTP_SERLVET_KEY))
.andReturn(mockServlet);
final Key<ServletDefinition> servetDefsKey = Key
.get(TypeLiteral.get(ServletDefinition.class));
Binding<ServletDefinition> mockBinding = createMock(Binding.class);
expect(injector.findBindingsByType(eq(servetDefsKey.getTypeLiteral())))
.andReturn(ImmutableList.<Binding<ServletDefinition>>of(mockBinding));
Provider<ServletDefinition> bindingProvider = Providers.of(servletDefinition);
expect(mockBinding.getProvider())
.andReturn(bindingProvider);
replay(injector, binding, requestMock, mockResponse, mockBinding);
// Have to init the Servlet before we can dispatch to it.
servletDefinition.init(null, injector,
Sets.newSetFromMap(Maps.<HttpServlet, Boolean>newIdentityHashMap()));
final RequestDispatcher dispatcher = new ManagedServletPipeline(injector)
.getRequestDispatcher(pattern);
assertNotNull(dispatcher);
dispatcher.forward(requestMock, mockResponse);
assertTrue("Include did not dispatch to our servlet!", paths.contains(pattern));
verify(injector, requestMock, mockResponse, mockBinding);
}
public final void testForwardToManagedServletFailureOnCommittedBuffer()
throws IOException, ServletException {
IllegalStateException expected = null;
try {
forwardToManagedServletFailureOnCommittedBuffer();
}
catch (IllegalStateException ise) {
expected = ise;
} finally {
assertNotNull("Expected IllegalStateException was not thrown", expected);
}
}
public final void forwardToManagedServletFailureOnCommittedBuffer()
throws IOException, ServletException {
String pattern = "blah.html";
final ServletDefinition servletDefinition = new ServletDefinition(pattern,
Key.get(HttpServlet.class), UriPatternType.get(UriPatternType.SERVLET, pattern),
new HashMap<String, String>(), null);
final Injector injector = createMock(Injector.class);
final Binding binding = createMock(Binding.class);
final HttpServletRequest mockRequest = createMock(HttpServletRequest.class);
final HttpServletResponse mockResponse = createMock(HttpServletResponse.class);
expect(mockResponse.isCommitted())
.andReturn(true);
final HttpServlet mockServlet = new HttpServlet() {
protected void service(HttpServletRequest request, HttpServletResponse httpServletResponse)
throws ServletException, IOException {
final Object o = request.getAttribute(A_KEY);
assertEquals("Wrong attrib returned - " + o, A_VALUE, o);
}
};
expect(binding.acceptScopingVisitor((BindingScopingVisitor) anyObject()))
.andReturn(true);
expect(injector.getBinding(Key.get(HttpServlet.class)))
.andReturn(binding);
expect(injector.getInstance(Key.get(HttpServlet.class)))
.andReturn(mockServlet);
final Key<ServletDefinition> servetDefsKey = Key
.get(TypeLiteral.get(ServletDefinition.class));
Binding<ServletDefinition> mockBinding = createMock(Binding.class);
expect(injector.findBindingsByType(eq(servetDefsKey.getTypeLiteral())))
.andReturn(ImmutableList.<Binding<ServletDefinition>>of(mockBinding));
Provider<ServletDefinition> bindingProvider = Providers.of(servletDefinition);
expect(mockBinding.getProvider())
.andReturn(bindingProvider);
replay(injector, binding, mockRequest, mockResponse, mockBinding);
// Have to init the Servlet before we can dispatch to it.
servletDefinition.init(null, injector,
Sets.newSetFromMap(Maps.<HttpServlet, Boolean>newIdentityHashMap()));
final RequestDispatcher dispatcher = new ManagedServletPipeline(injector)
.getRequestDispatcher(pattern);
assertNotNull(dispatcher);
try {
dispatcher.forward(mockRequest, mockResponse);
}
finally {
verify(injector, mockRequest, mockResponse, mockBinding);
}
}
}