//
//  ========================================================================
//  Copyright (c) 1995-2020 Mort Bay Consulting Pty Ltd and others.
//  ------------------------------------------------------------------------
//  All rights reserved. This program and the accompanying materials
//  are made available under the terms of the Eclipse Public License v1.0
//  and Apache License v2.0 which accompanies this distribution.
//
//      The Eclipse Public License is available at
//      http://www.eclipse.org/legal/epl-v10.html
//
//      The Apache License v2.0 is available at
//      http://www.opensource.org/licenses/apache2.0.php
//
//  You may elect to redistribute this code under either of these licenses.
//  ========================================================================
//

package org.eclipse.jetty.http;

import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.ThreadLocalRandom;

import org.eclipse.jetty.http.MultiPartParser.State;
import org.eclipse.jetty.util.BufferUtil;
import org.hamcrest.Matchers;
import org.junit.jupiter.api.Test;

import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.is;
import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

// @checkstyle-disable-check : AvoidEscapedUnicodeCharactersCheck
public class MultiPartParserTest
{

    @Test
    public void testEmptyPreamble()
    {
        MultiPartParser parser = new MultiPartParser(new MultiPartParser.Handler()
        {
        }, "BOUNDARY");
        ByteBuffer data = BufferUtil.toBuffer("");

        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
    }

    @Test
    public void testNoPreamble()
    {
        MultiPartParser parser = new MultiPartParser(new MultiPartParser.Handler()
        {
        }, "BOUNDARY");
        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY   \r\n");

        parser.parse(data, false);
        assertTrue(parser.isState(State.BODY_PART));
        assertThat(data.remaining(), is(0));
    }

    @Test
    public void testPreamble()
    {
        MultiPartParser parser = new MultiPartParser(new MultiPartParser.Handler()
        {
        }, "BOUNDARY");
        ByteBuffer data;

        data = BufferUtil.toBuffer("This is not part of a part\r\n");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));

        data = BufferUtil.toBuffer("More data that almost includes \n--BOUNDARY but no CR before.");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));

        data = BufferUtil.toBuffer("Could be a boundary \r\n--BOUNDAR");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));

        data = BufferUtil.toBuffer("but not it isn't \r\n--BOUN");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));

        data = BufferUtil.toBuffer("DARX nor is this");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));
    }

    @Test
    public void testPreambleCompleteBoundary()
    {
        MultiPartParser parser = new MultiPartParser(new MultiPartParser.Handler()
        {
        }, "BOUNDARY");
        ByteBuffer data = BufferUtil.toBuffer("This is not part of a part\r\n--BOUNDARY  \r\n");

        parser.parse(data, false);
        assertThat(parser.getState(), is(State.BODY_PART));
        assertThat(data.remaining(), is(0));
    }

    @Test
    public void testPreambleSplitBoundary()
    {
        MultiPartParser parser = new MultiPartParser(new MultiPartParser.Handler()
        {
        }, "BOUNDARY");
        ByteBuffer data = BufferUtil.toBuffer("This is not part of a part\r\n");

        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));
        data = BufferUtil.toBuffer("-");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));
        data = BufferUtil.toBuffer("-");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));
        data = BufferUtil.toBuffer("B");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.PREAMBLE));
        assertThat(data.remaining(), is(0));
        data = BufferUtil.toBuffer("OUNDARY-");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER_CLOSE));
        assertThat(data.remaining(), is(0));
        data = BufferUtil.toBuffer("ignore\r");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER_PADDING));
        assertThat(data.remaining(), is(0));
        data = BufferUtil.toBuffer("\n");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.BODY_PART));
        assertThat(data.remaining(), is(0));
    }

    @Test
    public void testFirstPartNoFields()
    {
        MultiPartParser parser = new MultiPartParser(new MultiPartParser.Handler()
        {
        }, "BOUNDARY");
        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n\r\n");

        parser.parse(data, false);
        assertThat(parser.getState(), is(State.FIRST_OCTETS));
        assertThat(data.remaining(), is(0));
    }

    @Test
    public void testFirstPartFields()
    {
        TestHandler handler = new TestHandler()
        {
            @Override
            public boolean headerComplete()
            {
                super.headerComplete();
                return true;
            }
        };
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name0: value0\r\n" +
            "name1 :value1 \r\n" +
            "name2:value\r\n" +
            " 2\r\n" +
            "\r\n" +
            "Content");

        parser.parse(data, false);
        assertThat(parser.getState(), is(State.FIRST_OCTETS));
        assertThat(data.remaining(), is(7));
        assertThat(handler.fields, Matchers.contains("name0: value0", "name1: value1", "name2: value 2", "<<COMPLETE>>"));
    }

    @Test
    public void testFirstPartNoContent()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name: value\r\n" +
            "\r\n" +
            "\r\n" +
            "--BOUNDARY");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("<<LAST>>"));
    }

    @Test
    public void testFirstPartNoContentNoCRLF()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name: value\r\n" +
            "\r\n" +
            "--BOUNDARY");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("<<LAST>>"));
    }

    @Test
    public void testFirstPartContentLookingLikeNoCRLF()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name: value\r\n" +
            "\r\n" +
            "-");
        parser.parse(data, false);
        data = BufferUtil.toBuffer("Content!");
        parser.parse(data, false);

        assertThat(parser.getState(), is(State.OCTETS));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("-", "Content!"));
    }

    @Test
    public void testFirstPartPartialContent()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name: value\n" +
            "\r\n" +
            "Hello\r\n");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.OCTETS));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Hello"));

        data = BufferUtil.toBuffer(
            "Now is the time for all good ment to come to the aid of the party.\r\n" +
                "How now brown cow.\r\n" +
                "The quick brown fox jumped over the lazy dog.\r\n" +
                "this is not a --BOUNDARY\r\n");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.OCTETS));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Hello", "\r\n", "Now is the time for all good ment to come to the aid of the party.\r\n" +
            "How now brown cow.\r\n" +
            "The quick brown fox jumped over the lazy dog.\r\n" +
            "this is not a --BOUNDARY"));
    }

    @Test
    public void testFirstPartShortContent()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name: value\n" +
            "\r\n" +
            "Hello\r\n" +
            "--BOUNDARY");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Hello", "<<LAST>>"));
    }

    @Test
    public void testFirstPartLongContent()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\r\n" +
            "name: value\n" +
            "\r\n" +
            "Now is the time for all good ment to come to the aid of the party.\r\n" +
            "How now brown cow.\r\n" +
            "The quick brown fox jumped over the lazy dog.\r\n" +
            "\r\n" +
            "--BOUNDARY");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Now is the time for all good ment to come to the aid of the party.\r\n" +
            "How now brown cow.\r\n" +
            "The quick brown fox jumped over the lazy dog.\r\n", "<<LAST>>"));
    }

    @Test
    public void testFirstPartLongContentNoCarriageReturn()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        //boundary still requires carriage return
        ByteBuffer data = BufferUtil.toBuffer("--BOUNDARY\n" +
            "name: value\n" +
            "\n" +
            "Now is the time for all good men to come to the aid of the party.\n" +
            "How now brown cow.\n" +
            "The quick brown fox jumped over the lazy dog.\n" +
            "\r\n" +
            "--BOUNDARY");
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(data.remaining(), is(0));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Now is the time for all good men to come to the aid of the party.\n" +
            "How now brown cow.\n" +
            "The quick brown fox jumped over the lazy dog.\n", "<<LAST>>"));
    }

    @Test
    public void testBinaryPart()
    {
        byte[] random = new byte[8192];
        final ByteBuffer bytes = BufferUtil.allocate(random.length);
        ThreadLocalRandom.current().nextBytes(random);
        // Arrays.fill(random,(byte)'X');

        TestHandler handler = new TestHandler()
        {
            @Override
            public boolean content(ByteBuffer buffer, boolean last)
            {
                BufferUtil.append(bytes, buffer);
                return last;
            }
        };
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        String preamble = "Blah blah blah\r\n--BOUNDARY\r\n\r\n";
        String epilogue = "\r\n--BOUNDARY\r\nBlah blah blah!\r\n";

        ByteBuffer data = BufferUtil.allocate(preamble.length() + random.length + epilogue.length());
        BufferUtil.append(data, BufferUtil.toBuffer(preamble));
        BufferUtil.append(data, ByteBuffer.wrap(random));
        BufferUtil.append(data, BufferUtil.toBuffer(epilogue));

        parser.parse(data, true);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(data.remaining(), is(19));
        assertThat(bytes.array(), is(random));
    }

    @Test
    public void testEpilogue()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("" +
            "--BOUNDARY\r\n" +
            "name: value\n" +
            "\r\n" +
            "Hello\r\n" +
            "--BOUNDARY--" +
            "epilogue here:" +
            "\r\n" +
            "--BOUNDARY--" +
            "\r\n" +
            "--BOUNDARY");

        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Hello", "<<LAST>>"));

        parser.parse(data, true);
        assertThat(parser.getState(), is(State.END));
    }

    @Test
    public void testMultipleContent()
    {
        TestHandler handler = new TestHandler();
        MultiPartParser parser = new MultiPartParser(handler, "BOUNDARY");

        ByteBuffer data = BufferUtil.toBuffer("" +
            "--BOUNDARY\r\n" +
            "name: value\n" +
            "\r\n" +
            "Hello" +
            "\r\n" +
            "--BOUNDARY\r\n" +
            "powerLevel: 9001\n" +
            "\r\n" +
            "secondary" +
            "\r\n" +
            "content" +
            "\r\n--BOUNDARY--" +
            "epilogue here");

        /* Test First Content Section */
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Hello", "<<LAST>>"));

        /* Test Second Content Section */
        parser.parse(data, false);
        assertThat(parser.getState(), is(State.DELIMITER));
        assertThat(handler.fields, Matchers.contains("name: value", "<<COMPLETE>>", "powerLevel: 9001", "<<COMPLETE>>"));
        assertThat(handler.content, Matchers.contains("Hello", "<<LAST>>", "secondary\r\ncontent", "<<LAST>>"));

        /* Test Progression to END State */
        parser.parse(data, true);
        assertThat(parser.getState(), is(State.END));
        assertThat(data.remaining(), is(0));
    }

    @Test
    public void testCrAsLineTermination()
    {
        TestHandler handler = new TestHandler()
        {
            @Override
            public boolean messageComplete()
            {
                return true;
            }

            @Override
            public boolean content(ByteBuffer buffer, boolean last)
            {
                super.content(buffer, last);
                return false;
            }
        };
        MultiPartParser parser = new MultiPartParser(handler, "AaB03x");

        ByteBuffer data = BufferUtil.toBuffer(
            "--AaB03x\r\n" +
                "content-disposition: form-data; name=\"field1\"\r\n" +
                "\r" +
                "Joe Blow\r\n" +
                "--AaB03x--\r\n");

        BadMessageException x = assertThrows(BadMessageException.class,
            () -> parser.parse(data, true),
            "Invalid EOL");
        assertThat(x.getMessage(), containsString("Bad EOL"));
    }

    @Test // TODO: Parameterize
    public void testBadHeaderNames() throws Exception
    {
        String[] bad = new String[]
            {
                "Foo\\Bar: value\r\n",
                "Foo@Bar: value\r\n",
                "Foo,Bar: value\r\n",
                "Foo}Bar: value\r\n",
                "Foo{Bar: value\r\n",
                "Foo=Bar: value\r\n",
                "Foo>Bar: value\r\n",
                "Foo<Bar: value\r\n",
                "Foo)Bar: value\r\n",
                "Foo(Bar: value\r\n",
                "Foo?Bar: value\r\n",
                "Foo\"Bar: value\r\n",
                "Foo/Bar: value\r\n",
                "Foo]Bar: value\r\n",
                "Foo[Bar: value\r\n",
                "\u0192\u00f8\u00f8\u00df\u00e5\u00ae: value\r\n"
            };

        for (int i = 0; i < bad.length; i++)
        {
            ByteBuffer buffer = BufferUtil.toBuffer(
                "--AaB03x\r\n" + bad[i] + "\r\n--AaB03x--\r\n");

            MultiPartParser.Handler handler = new TestHandler();
            MultiPartParser parser = new MultiPartParser(handler, "AaB03x");

            try
            {
                parser.parse(buffer, true);
            }
            catch (BadMessageException e)
            {
                assertTrue(e.getMessage().contains("Illegal character"));
            }
        }
    }

    @Test
    public void splitTest()
    {
        TestHandler handler = new TestHandler()
        {
            @Override
            public boolean messageComplete()
            {
                return true;
            }

            @Override
            public boolean content(ByteBuffer buffer, boolean last)
            {
                super.content(buffer, last);
                return false;
            }
        };

        MultiPartParser parser = new MultiPartParser(handler, "---------------------------9051914041544843365972754266");
        ByteBuffer data = BufferUtil.toBuffer(
            "POST / HTTP/1.1\n" +
                "Host: localhost:8000\n" +
                "User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:29.0) Gecko/20100101 Firefox/29.0\n" +
                "Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8\n" +
                "Accept-Language: en-US,en;q=0.5\n" +
                "Accept-Encoding: gzip, deflate\n" +
                "Cookie: __atuvc=34%7C7; permanent=0; _gitlab_session=226ad8a0be43681acf38c2fab9497240; __profilin=p%3Dt; request_method=GET\n" +
                "Connection: keep-alive\n" +
                "Content-Type: multipart/form-data; boundary=---------------------------9051914041544843365972754266\n" +
                "Content-Length: 554\n" +
                "\r\n" +
                "-----------------------------9051914041544843365972754266\n" +
                "Content-Disposition: form-data; name=\"text\"\n" +
                "\n" +
                "text default\r\n" +
                "-----------------------------9051914041544843365972754266\n" +
                "Content-Disposition: form-data; name=\"file1\"; filename=\"a.txt\"\n" +
                "Content-Type: text/plain\n" +
                "\n" +
                "Content of a.txt.\n" +
                "\r\n" +
                "-----------------------------9051914041544843365972754266\n" +
                "Content-Disposition: form-data; name=\"file2\"; filename=\"a.html\"\n" +
                "Content-Type: text/html\n" +
                "\n" +
                "<!DOCTYPE html><title>Content of a.html.</title>\n" +
                "\r\n" +
                "-----------------------------9051914041544843365972754266\n" +
                "Field1: value1\n" +
                "Field2: value2\n" +
                "Field3: value3\n" +
                "Field4: value4\n" +
                "Field5: value5\n" +
                "Field6: value6\n" +
                "Field7: value7\n" +
                "Field8: value8\n" +
                "Field9: value\n" +
                " 9\n" +
                "\r\n" +
                "-----------------------------9051914041544843365972754266\n" +
                "Field1: value1\n" +
                "\r\n" +
                "But the amount of denudation which the strata have\n" +
                "in many places suffered, independently of the rate\n" +
                "of accumulation of the degraded matter, probably\n" +
                "offers the best evidence of the lapse of time. I remember\n" +
                "having been much struck with the evidence of\n" +
                "denudation, when viewing volcanic islands, which\n" +
                "have been worn by the waves and pared all round\n" +
                "into perpendicular cliffs of one or two thousand feet\n" +
                "in height; for the gentle slope of the lava-streams,\n" +
                "due to their formerly liquid state, showed at a glance\n" +
                "how far the hard, rocky beds had once extended into\n" +
                "the open ocean.\n" +
                "\r\n" +
                "-----------------------------9051914041544843365972754266--" +
                "===== ajlkfja;lkdj;lakjd;lkjf ==== epilogue here  ==== kajflajdfl;kjafl;kjl;dkfja ====\n\r\n\r\r\r\n\n\n");

        int length = data.remaining();
        for (int i = 0; i < length - 1; i++)
        {
            //partition 0 to i
            ByteBuffer dataSeg = data.slice();
            dataSeg.position(0);
            dataSeg.limit(i);
            assertThat("First " + i, parser.parse(dataSeg, false), is(false));

            //partition i
            dataSeg = data.slice();
            dataSeg.position(i);
            dataSeg.limit(i + 1);
            assertThat("Second " + i, parser.parse(dataSeg, false), is(false));

            //partition i to length
            dataSeg = data.slice();
            dataSeg.position(i + 1);
            dataSeg.limit(length);
            assertThat("Third " + i, parser.parse(dataSeg, true), is(true));

            assertThat(handler.fields, Matchers.contains("Content-Disposition: form-data; name=\"text\"", "<<COMPLETE>>",
                "Content-Disposition: form-data; name=\"file1\"; filename=\"a.txt\"",
                "Content-Type: text/plain", "<<COMPLETE>>",
                "Content-Disposition: form-data; name=\"file2\"; filename=\"a.html\"",
                "Content-Type: text/html", "<<COMPLETE>>",
                "Field1: value1", "Field2: value2", "Field3: value3",
                "Field4: value4", "Field5: value5", "Field6: value6",
                "Field7: value7", "Field8: value8", "Field9: value 9", "<<COMPLETE>>",
                "Field1: value1", "<<COMPLETE>>"));

            assertThat(handler.contentString(), is("text default" + "<<LAST>>" +
                "Content of a.txt.\n" + "<<LAST>>" +
                "<!DOCTYPE html><title>Content of a.html.</title>\n" + "<<LAST>>" +
                "<<LAST>>" +
                "But the amount of denudation which the strata have\n" +
                "in many places suffered, independently of the rate\n" +
                "of accumulation of the degraded matter, probably\n" +
                "offers the best evidence of the lapse of time. I remember\n" +
                "having been much struck with the evidence of\n" +
                "denudation, when viewing volcanic islands, which\n" +
                "have been worn by the waves and pared all round\n" +
                "into perpendicular cliffs of one or two thousand feet\n" +
                "in height; for the gentle slope of the lava-streams,\n" +
                "due to their formerly liquid state, showed at a glance\n" +
                "how far the hard, rocky beds had once extended into\n" +
                "the open ocean.\n" + "<<LAST>>"));

            handler.clear();
            parser.reset();
        }
    }

    @Test
    public void testGeneratedForm()
    {
        TestHandler handler = new TestHandler()
        {
            @Override
            public boolean messageComplete()
            {
                return true;
            }

            @Override
            public boolean content(ByteBuffer buffer, boolean last)
            {
                super.content(buffer, last);
                return false;
            }

            @Override
            public boolean headerComplete()
            {
                return false;
            }
        };

        MultiPartParser parser = new MultiPartParser(handler, "WebKitFormBoundary7MA4YWf7OaKlSxkTrZu0gW");
        ByteBuffer data = BufferUtil.toBuffer("" +
            "Content-Type: multipart/form-data; boundary=WebKitFormBoundary7MA4YWf7OaKlSxkTrZu0gW\r\n" +
            "\r\n" +
            "--WebKitFormBoundary7MA4YWf7OaKlSxkTrZu0gW\r\n" +
            "Content-Disposition: form-data; name=\"part1\"\r\n" +
            "\n" +
            "wNfﾐxVam﾿t\r\n" +
            "--WebKitFormBoundary7MA4YWf7OaKlSxkTrZu0gW\n" +
            "Content-Disposition: form-data; name=\"part2\"\r\n" +
            "\r\n" +
            "&ﾳﾺ￙￹ￖￃO\r\n" +
            "--WebKitFormBoundary7MA4YWf7OaKlSxkTrZu0gW--");

        parser.parse(data, true);
        assertThat(parser.getState(), is(State.END));
        assertThat(handler.fields.size(), is(2));
    }

    static class TestHandler implements MultiPartParser.Handler
    {
        List<String> fields = new ArrayList<>();
        List<String> content = new ArrayList<>();

        @Override
        public void parsedField(String name, String value)
        {
            fields.add(name + ": " + value);
        }

        public String contentString()
        {
            StringBuilder sb = new StringBuilder();
            for (String s : content)
            {
                sb.append(s);
            }
            return sb.toString();
        }

        @Override
        public boolean headerComplete()
        {
            fields.add("<<COMPLETE>>");
            return false;
        }

        @Override
        public boolean content(ByteBuffer buffer, boolean last)
        {
            if (BufferUtil.hasContent(buffer))
                content.add(BufferUtil.toString(buffer));
            if (last)
                content.add("<<LAST>>");
            return last;
        }

        public void clear()
        {
            fields.clear();
            content.clear();
        }
    }
}
