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Java example source code file (ServletDefinitionPathsTest.java)

This example Java source code file (ServletDefinitionPathsTest.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

a1s, binding, hashmap, http, httpservletrequest, httpservletresponse, injector, ioexception, override, request, response, servlet, servletdefinition, servletexception, string, tam, testcase, util

The ServletDefinitionPathsTest.java Java example source code

/**
 * 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 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.expect;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;

import com.google.common.collect.Sets;
import com.google.inject.Binding;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.spi.BindingScopingVisitor;

import junit.framework.TestCase;

import java.io.IOException;
import java.util.HashMap;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Ensures servlet spec compliance for CGI-style variables and general
 *  path/pattern matching.
 *
 * @author Dhanji R. Prasanna (dhanji@gmail com)
 */
public class ServletDefinitionPathsTest extends TestCase {

  // Data-driven test.
  public final void testServletPathMatching() throws IOException, ServletException {
    servletPath("/index.html", "*.html", "/index.html");
    servletPath("/somewhere/index.html", "*.html", "/somewhere/index.html");
    servletPath("/somewhere/index.html", "/*", "");
    servletPath("/index.html", "/*", "");
    servletPath("/", "/*", "");
    servletPath("//", "/*", "");
    servletPath("/////", "/*", "");
    servletPath("", "/*", "");
    servletPath("/thing/index.html", "/thing/*", "/thing");
    servletPath("/thing/wing/index.html", "/thing/*", "/thing");
  }

  private void servletPath(final String requestPath, String mapping,
      final String expectedServletPath) throws IOException, ServletException {

    Injector injector = createMock(Injector.class);
    Binding binding = createMock(Binding.class);
    HttpServletRequest request = createMock(HttpServletRequest.class);
    HttpServletResponse response = createMock(HttpServletResponse.class);

    expect(binding.acceptScopingVisitor((BindingScopingVisitor) anyObject()))
        .andReturn(true);
    expect(injector.getBinding(Key.get(HttpServlet.class)))
        .andReturn(binding);

    final boolean[] run = new boolean[1];
    //get an instance of this servlet
    expect(injector.getInstance(Key.get(HttpServlet.class)))
        .andReturn(new HttpServlet() {

          @Override
          protected void service(HttpServletRequest servletRequest,
              HttpServletResponse httpServletResponse) throws ServletException, IOException {

            final String path = servletRequest.getServletPath();
            assertEquals(String.format("expected [%s] but was [%s]", expectedServletPath, path),
                expectedServletPath, path);
            run[0] = true;
          }
        });

    expect(request.getServletPath())
        .andReturn(requestPath);

    replay(injector, binding, request);

    ServletDefinition servletDefinition =
        new ServletDefinition(
            Key.get(HttpServlet.class),
            UriPatternType.get(UriPatternType.SERVLET, mapping),
            new HashMap<String, String>(),
            null);

    servletDefinition.init(null, injector, Sets.<HttpServlet>newIdentityHashSet());
    servletDefinition.doService(request, response);

    assertTrue("Servlet did not run!", run[0]);
    
    verify(injector, binding, request);

  }

  // Data-driven test.
  public final void testPathInfoWithServletStyleMatching() throws IOException, ServletException {
    pathInfoWithServletStyleMatching("/path/index.html", "/path", "/*", "/index.html", "");
    pathInfoWithServletStyleMatching("/path//hulaboo///index.html", "/path", "/*",
        "/hulaboo/index.html", "");
    pathInfoWithServletStyleMatching("/path/", "/path", "/*", "/", "");
    pathInfoWithServletStyleMatching("/path////////", "/path", "/*", "/", "");

    // a servlet mapping of /thing/*
    pathInfoWithServletStyleMatching("/path/thing////////", "/path", "/thing/*", "/", "/thing");
    pathInfoWithServletStyleMatching("/path/thing/stuff", "/path", "/thing/*", "/stuff", "/thing");
    pathInfoWithServletStyleMatching("/path/thing/stuff.html", "/path", "/thing/*", "/stuff.html",
        "/thing");
    pathInfoWithServletStyleMatching("/path/thing", "/path", "/thing/*", null, "/thing");

    // see external issue 372
    pathInfoWithServletStyleMatching("/path/some/path/of.jsp", "/path", "/thing/*",
        null, "/some/path/of.jsp");

    // *.xx style mapping
    pathInfoWithServletStyleMatching("/path/thing.thing", "/path", "*.thing", null, "/thing.thing");
    pathInfoWithServletStyleMatching("/path///h.thing", "/path", "*.thing", null, "/h.thing");
    pathInfoWithServletStyleMatching("/path///...//h.thing", "/path", "*.thing", null,
        "/.../h.thing");
    pathInfoWithServletStyleMatching("/path/my/h.thing", "/path", "*.thing", null, "/my/h.thing");

    // Encoded URLs
    pathInfoWithServletStyleMatching("/path/index%2B.html", "/path", "/*", "/index+.html", "");
    pathInfoWithServletStyleMatching("/path/a%20file%20with%20spaces%20in%20name.html", "/path", "/*", "/a file with spaces in name.html", "");
    pathInfoWithServletStyleMatching("/path/Tam%C3%A1s%20nem%20m%C3%A1s.html", "/path", "/*", "/Tamás nem más.html", "");
  }

  private void pathInfoWithServletStyleMatching(final String requestUri, final String contextPath,
      String mapping, final String expectedPathInfo, final String servletPath)
      throws IOException, ServletException {

    Injector injector = createMock(Injector.class);
    Binding binding = createMock(Binding.class);
    HttpServletRequest request = createMock(HttpServletRequest.class);
    HttpServletResponse response = createMock(HttpServletResponse.class);

    expect(binding.acceptScopingVisitor((BindingScopingVisitor) anyObject()))
        .andReturn(true);
    expect(injector.getBinding(Key.get(HttpServlet.class)))
        .andReturn(binding);

    final boolean[] run = new boolean[1];
    //get an instance of this servlet
    expect(injector.getInstance(Key.get(HttpServlet.class)))
        .andReturn(new HttpServlet() {

          @Override
          protected void service(HttpServletRequest servletRequest,
              HttpServletResponse httpServletResponse) throws ServletException, IOException {

            final String path = servletRequest.getPathInfo();

            if (null == expectedPathInfo) {
              assertNull(String.format("expected [%s] but was [%s]", expectedPathInfo, path),
                  path);
            }
            else {
              assertEquals(String.format("expected [%s] but was [%s]", expectedPathInfo, path),
                  expectedPathInfo, path);
            }

            //assert memoizer
            //noinspection StringEquality
            assertSame("memo field did not work", path, servletRequest.getPathInfo());

            run[0] = true;
          }
        });

    expect(request.getRequestURI())
        .andReturn(requestUri);

    expect(request.getServletPath())
        .andReturn(servletPath)
        .anyTimes();

    expect(request.getContextPath())
        .andReturn(contextPath);

    expect(request.getAttribute(REQUEST_DISPATCHER_REQUEST)).andReturn(null);

    replay(injector, binding, request);

    ServletDefinition servletDefinition =
        new ServletDefinition(
            Key.get(HttpServlet.class),
            UriPatternType.get(UriPatternType.SERVLET, mapping),
            new HashMap<String, String>(),
            null);

    servletDefinition.init(null, injector, Sets.<HttpServlet>newIdentityHashSet());
    servletDefinition.doService(request, response);

    assertTrue("Servlet did not run!", run[0]);

    verify(injector, binding, request);
  }

  // Data-driven test.
  public final void testPathInfoWithRegexMatching() throws IOException, ServletException {
    // first a mapping of /*
    pathInfoWithRegexMatching("/path/index.html", "/path", "/(.)*", "/index.html", "");
    pathInfoWithRegexMatching("/path//hulaboo///index.html", "/path", "/(.)*",
        "/hulaboo/index.html", "");
    pathInfoWithRegexMatching("/path/", "/path", "/(.)*", "/", "");
    pathInfoWithRegexMatching("/path////////", "/path", "/(.)*", "/", "");

    // a servlet mapping of /thing/*
    pathInfoWithRegexMatching("/path/thing////////", "/path", "/thing/(.)*", "/", "/thing");
    pathInfoWithRegexMatching("/path/thing/stuff", "/path", "/thing/(.)*", "/stuff", "/thing");
    pathInfoWithRegexMatching("/path/thing/stuff.html", "/path", "/thing/(.)*", "/stuff.html",
        "/thing");
    pathInfoWithRegexMatching("/path/thing", "/path", "/thing/(.)*", null, "/thing");

    // *.xx style mapping
    pathInfoWithRegexMatching("/path/thing.thing", "/path", ".*\\.thing", null, "/thing.thing");
    pathInfoWithRegexMatching("/path///h.thing", "/path", ".*\\.thing", null, "/h.thing");
    pathInfoWithRegexMatching("/path///...//h.thing", "/path", ".*\\.thing", null,
        "/.../h.thing");
    pathInfoWithRegexMatching("/path/my/h.thing", "/path", ".*\\.thing", null, "/my/h.thing");

    // path
    pathInfoWithRegexMatching("/path/test.com/com.test.MyServletModule", "", "/path/[^/]+/(.*)",
        "com.test.MyServletModule", "/path/test.com/com.test.MyServletModule");

    // Encoded URLs
    pathInfoWithRegexMatching("/path/index%2B.html", "/path", "/(.)*", "/index+.html", "");
    pathInfoWithRegexMatching("/path/a%20file%20with%20spaces%20in%20name.html", "/path", "/(.)*", "/a file with spaces in name.html", "");
    pathInfoWithRegexMatching("/path/Tam%C3%A1s%20nem%20m%C3%A1s.html", "/path", "/(.)*", "/Tamás nem más.html", "");
  }

  public final void pathInfoWithRegexMatching(final String requestUri, final String contextPath,
      String mapping, final String expectedPathInfo, final String servletPath)
      throws IOException, ServletException {

    Injector injector = createMock(Injector.class);
    Binding binding = createMock(Binding.class);
    HttpServletRequest request = createMock(HttpServletRequest.class);
    HttpServletResponse response = createMock(HttpServletResponse.class);

    expect(binding.acceptScopingVisitor((BindingScopingVisitor) anyObject()))
        .andReturn(true);
    expect(injector.getBinding(Key.get(HttpServlet.class)))
        .andReturn(binding);

    final boolean[] run = new boolean[1];
    //get an instance of this servlet
    expect(injector.getInstance(Key.get(HttpServlet.class)))
        .andReturn(new HttpServlet() {

          @Override
          protected void service(HttpServletRequest servletRequest,
              HttpServletResponse httpServletResponse) throws ServletException, IOException {

            final String path = servletRequest.getPathInfo();

            if (null == expectedPathInfo) {
              assertNull(String.format("expected [%s] but was [%s]", expectedPathInfo, path),
                  path);
            }
            else {
              assertEquals(String.format("expected [%s] but was [%s]", expectedPathInfo, path),
                  expectedPathInfo, path);
            }

            //assert memoizer
            //noinspection StringEquality
            assertSame("memo field did not work", path, servletRequest.getPathInfo());

            run[0] = true;
          }
        });

    expect(request.getRequestURI())
        .andReturn(requestUri);

    expect(request.getServletPath())
        .andReturn(servletPath)
        .anyTimes();

    expect(request.getContextPath())
        .andReturn(contextPath);

    expect(request.getAttribute(REQUEST_DISPATCHER_REQUEST)).andReturn(null);

    replay(injector, binding, request);

    ServletDefinition servletDefinition =
        new ServletDefinition(
            Key.get(HttpServlet.class),
            UriPatternType.get(UriPatternType.REGEX, mapping),
            new HashMap<String, String>(),
            null);

    servletDefinition.init(null, injector, Sets.<HttpServlet>newIdentityHashSet());
    servletDefinition.doService(request, response);

    assertTrue("Servlet did not run!", run[0]);
    
    verify(injector, binding, request);
  }
}

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