core/src/test/java/fi/iki/elonen/HttpServerTest.java

package fi.iki.elonen;

/*
 * #%L
 * NanoHttpd-Core
 * %%
 * Copyright (C) 2012 - 2015 nanohttpd
 * %%
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 * 
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 * 
 * 3. Neither the name of the nanohttpd nor the names of its contributors
 *    may be used to endorse or promote products derived from this software without
 *    specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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 */

import static junit.framework.Assert.assertNotNull;
import static junit.framework.Assert.assertTrue;
import static junit.framework.Assert.fail;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.StringReader;
import java.net.InetAddress;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.After;
import org.junit.Before;
import org.junit.Test;

/**
 * @author Paul S. Hawke (paul.hawke@gmail.com) On: 3/10/13 at 8:32 PM
 */
public class HttpServerTest {

    public static class TestServer extends NanoHTTPD {

        public Response response = newFixedLengthResponse("");

        public String uri;

        public Method method;

        public Map<String, String> header;

        public Map<String, String> parms;

        public Map<String, String> files;

        public Map<String, List<String>> decodedParamters;

        public Map<String, List<String>> decodedParamtersFromParameter;

        public String queryParameterString;

        public TestServer() {
            super(8192);
        }

        public TestServer(int port) {
            super(port);
        }

        public HTTPSession createSession(TempFileManager tempFileManager, InputStream inputStream, OutputStream outputStream) {
            return new HTTPSession(tempFileManager, inputStream, outputStream);
        }

        public HTTPSession createSession(TempFileManager tempFileManager, InputStream inputStream, OutputStream outputStream, InetAddress inetAddress) {
            return new HTTPSession(tempFileManager, inputStream, outputStream, inetAddress);
        }

        @Override
        public Response serve(IHTTPSession session) {
            this.uri = session.getUri();
            this.method = session.getMethod();
            this.header = session.getHeaders();
            this.parms = session.getParms();
            this.files = new HashMap<String, String>();
            try {
                session.parseBody(this.files);
            } catch (Exception e) {
                e.printStackTrace();
            }
            this.queryParameterString = session.getQueryParameterString();
            this.decodedParamtersFromParameter = decodeParameters(this.queryParameterString);
            this.decodedParamters = decodeParameters(session.getQueryParameterString());
            return this.response;
        }
    }

    public static class TestTempFileManager extends NanoHTTPD.DefaultTempFileManager {

        public void _clear() {
            super.clear();
        }

        @Override
        public void clear() {
            // ignore
        }
    }

    public static final String URI = "http://www.myserver.org/pub/WWW/someFile.html";

    protected TestServer testServer;

    protected TestTempFileManager tempFileManager;

    protected void assertLinesOfText(String[] expected, List<String> lines) {
        // assertEquals(expected.length, lines.size());
        for (int i = 0; i < expected.length; i++) {
            String line = lines.get(i);
            assertTrue("Output line " + i + " doesn't match expectation.\n" + "  Output: " + line + "\n" + "Expected: " + expected[i], line.matches(expected[i]));
        }
    }

    protected void assertResponse(ByteArrayOutputStream outputStream, String[] expected) throws IOException {
        List<String> lines = getOutputLines(outputStream);
        assertLinesOfText(expected, lines);
    }

    protected List<String> getOutputLines(ByteArrayOutputStream outputStream) throws IOException {
        BufferedReader reader = new BufferedReader(new StringReader(outputStream.toString()));
        return readLinesFromFile(reader);
    }

    protected ByteArrayOutputStream invokeServer(String request) {
        ByteArrayInputStream inputStream = new ByteArrayInputStream(request.getBytes());
        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        NanoHTTPD.HTTPSession session = this.testServer.createSession(this.tempFileManager, inputStream, outputStream);
        try {
            session.execute();
        } catch (IOException e) {
            fail("" + e);
            e.printStackTrace();
        }
        return outputStream;
    }

    protected List<String> readLinesFromFile(BufferedReader reader) throws IOException {
        List<String> lines = new ArrayList<String>();
        String line = "";
        while (line != null) {
            line = reader.readLine();
            if (line != null) {
                lines.add(line.trim());
            }
        }
        return lines;
    }

    @Before
    public void setUp() throws Exception {
        this.testServer = new TestServer();
        this.tempFileManager = new TestTempFileManager();
    }

    @After
    public void tearDown() {
        this.tempFileManager._clear();
    }

    @Test
    public void testServerExists() {
        assertNotNull(this.testServer);
    }
}