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Java example source code file (HeaderTests.java)

This example Java source code file (HeaderTests.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

bytearrayinputstream, error, foo, foo\:\\r\\n, fub, headerparser, headertests, http, ioexception, iterator, messageheader, net, network, runtimeexception, string, util, www

The HeaderTests.java Java example source code

/*
 * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/**
 * @test
 * @summary Tests for HeaderParser and MessageHeader
 *
 * Test of HeaderParser, MessageHeader changes
 * introduced for bug fix 4722333.
 */

import sun.net.www.HeaderParser;
import sun.net.www.MessageHeader;
import sun.net.www.protocol.http.AuthenticationHeader;
import java.io.*;
import java.util.Iterator;

public class HeaderTests {

    static MessageHeader createMessageHeader (String s) {
        ByteArrayInputStream bis = new ByteArrayInputStream (s.getBytes());
        MessageHeader h = new MessageHeader ();
        try {
            h.parseHeader (bis);
        } catch (IOException e) {
            throw new RuntimeException ("IOException parsing header");
        }
        return h;
    }

    /* String to parse */

    static String s1 =
                "Foo: bar\r\n"+
                "Fub: abc\r\n"+
                "Foo:\r\n"+
                "Fub: \r\n"+
                "Foo: param1=one param2=\"two\" param3 param4=\"value=4\"\r\n"+
                "Fub: xparam1=one xparam2=\"two\" xparam3 xparam4=\"value=4\"\r\n";

    static String s2 = "p1=1 p2=2 p3=3 p4=4 p5=5 p6=\"six\" p7=7 p8=8 p9=9 p10=10 p11=11 p12=12";

    static String s3 = "p1=1, p2=2, p3=3, p4=4, p5=5, p6=\"six\", p7=7, p8=8, p9=9, p10=10, p11=11, p12=12";

    static String s23_expect[][] = {{"p2","2"},{"p3","3"},{"p4","4"},{"p5","5"},{"p6","six"},
                                    {"p7","7"},{"p8","8"},{"p9","9"},{"p10","10"},{"p11","11"},{"p12","12"}};

    static String s23_expect1[][] = {{"p1","1"},{"p2","2"},{"p3","3"},{"p4","4"},{"p5","5"},{"p6","six"},
                                    {"p7","7"},{"p8","8"},{"p9","9"},{"p10","10"},{"p11","11"}};

    static String s23_expect2[][] = {{"p5","5"},{"p6","six"}};

    /* Expected header parser contents for Foo headers */
    static String s1_Foo[][][] = {{{"bar", null}
                                  },
                                  {{"param1","one"},{"param2","two"},
                                   {"param3", null},{"param4","value=4"}
                                  }
                                 };

    /* Expected header parser contents for Fub headers */
    static String s1_Fub[][][] = {{{"abc", null}
                                  },
                                  {{"xparam1","one"},{"xparam2","two"},
                                   {"xparam3", null},{"xparam4","value=4"}
                                  }
                                 };

    public static void main (String args[]) {
        MessageHeader head = createMessageHeader (s1);
        Iterator iter = head.multiValueIterator ("Foo");
        checkHeader (iter, s1_Foo);
        iter = head.multiValueIterator ("Fub");
        checkHeader (iter, s1_Fub);

        HeaderParser hp = new HeaderParser (s2).subsequence (1,12);
        check (hp, s23_expect);

        hp = new HeaderParser (s3).subsequence (1,12);
        check (hp, s23_expect);

        hp = new HeaderParser (s3).subsequence (0,11);
        check (hp, s23_expect1);

        hp = new HeaderParser (s2).subsequence (4,6);
        check (hp, s23_expect2);
    }

    static void checkHeader (Iterator iter, String[][][] expect) {
        for (int i=0; iter.hasNext (); ) {
            String s = (String) iter.next();
            HeaderParser p = new HeaderParser (s);
            boolean empty = check (p, expect[i]);
            if (!empty) {
                i++;
            }
        }
    }

        static boolean check (HeaderParser p, String[][]expect) {
            Iterator keys = p.keys();
            Iterator vals = p.values();
            boolean empty = true;
            for (int j=0; keys.hasNext(); j++) {
                empty = false;
                String key = (String)keys.next();
                String ival = (String)vals.next();
                String val = p.findValue (key);
                if (val == null && ival == null)
                    continue;
                if (!val.equals(ival)) {
                    throw new RuntimeException ("Error " + val + "/" + ival);
                }
                if (!expect[j][0].equals (key)) {
                    throw new RuntimeException ("Error "+key+"/" + expect[j][0]);
                }
                if (expect[j][1] != null && !expect[j][1].equals (val)) {
                    throw new RuntimeException ("Error "+val+"/" + expect[j][1]);
                }
            }
            return empty;
        }
}

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