StringPrepTest.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2014 Red Hat, Inc., and individual contributors
 * as indicated by the @author tags.
 *
 * 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 org.wildfly.security.sasl.test;

import static org.junit.Assert.*;

import java.nio.charset.StandardCharsets;
import java.text.Normalizer;

import org.junit.Assert;
import org.junit.Ignore;
import org.junit.Test;
import org.wildfly.security.sasl.util.StringPrep;
import org.wildfly.security.util.ByteStringBuilder;

/**
 * Tests of org.wildfly.security.sasl.util.StringPrep by RFC 3454
 *
 * @author <a href="mailto:jkalina@redhat.com">Jan Kalina</a>
 */
public class StringPrepTest {

    @Test
    public void testEncoding() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("", b, 0);
        Assert.assertArrayEquals(new byte[]{}, b.toArray());
        StringPrep.encode("abc", b, 0);
        Assert.assertArrayEquals(new byte[]{'a', 'b', 'c'}, b.toArray());
    }

    @Test
    public void testEncodingOf1byteChar() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a", b, 0);
        Assert.assertArrayEquals(new byte[]{(byte) 0x61}, b.toArray());
    }

    @Test
    public void testEncodingOf2bytesChar() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\u0438", b, 0);
        Assert.assertArrayEquals(new byte[]{(byte) 0xD0, (byte) 0xB8}, b.toArray());
    }

    @Test
    public void testEncodingOf3bytesChar() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\u4F60", b, 0);
        Assert.assertArrayEquals(new byte[]{(byte) 0xE4, (byte) 0xBD, (byte) 0xA0}, b.toArray());
    }

    @Test
    public void testEncodingOf4bytesChar() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\uD83C\uDCA1", b, 0); // 0x1F0A1
        Assert.assertArrayEquals(new byte[]{(byte) 0xF0, (byte) 0x9F, (byte) 0x82, (byte) 0xA1}, b.toArray());
    }

    @Test
    public void testEncodingOfMaxCodepointChar() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\uDBFF\uDFFF", b, 0); // 0x10FFFF
        Assert.assertArrayEquals(new byte[]{(byte) 0xF4, (byte) 0x8F, (byte) 0xBF, (byte) 0xBF}, b.toArray());
    }

    @Test
    public void testEncodingStringWithSurrogates() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a\uD83C\uDCA1b", b, 0);
        Assert.assertArrayEquals(new byte[]{(byte) 0x61, (byte) 0xF0, (byte) 0x9F, (byte) 0x82, (byte) 0xA1, (byte) 0x62}, b.toArray());
    }

    @Test
    public void testEncodingOfHighSurrogateWithoutLow() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\uD83C", b, 0); // only high surrogate
            throw new Exception("Not throwed Invalid surrogate pair");
        } catch (IllegalArgumentException e) {}
    }

    @Test
    public void testEncodingOfLowSurrogateWithoutHigh() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\uDC00", b, 0); // only low surrogate
            throw new Exception("Not throwed Invalid surrogate pair");
        } catch (IllegalArgumentException e) {}
    }

    @Test
    public void testEncodingOfTwoHighSurrogates() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\uD83C\uD83C", b, 0); // two high surrogates
            throw new Exception("Not throwed Invalid surrogate pair");
        } catch (IllegalArgumentException e) {}
    }

    @Test
    public void testEncodingOfWrongOrderedSurrogates() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\uDCA1\uD83C", b, 0); // wrong order of surrogates
            throw new Exception("Not throwed Invalid surrogate pair");
        } catch (IllegalArgumentException e) {}
    }

    @Test
    public void testRightString() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\u05BE", b, 0);
        Assert.assertArrayEquals(new byte[]{(byte) 0xD6, (byte) 0xBE}, b.toArray());
    }

    @Test
    public void testRightStringWithNeutralChars() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\u05BE - \uFBA8", b, 0);
        Assert.assertArrayEquals(new byte[]{(byte) 0xD6, (byte) 0xBE, (byte) 0x20, (byte) 0x2D, (byte) 0x20, (byte) 0xEF, (byte) 0xAE, (byte) 0xA8}, b.toArray()); // D6 BE 20 2D 20 EF AE A8
    }

    /**
     * RFC 3454: If a string contains any RandALCat character, the string MUST NOT contain any LCat character.
     */
    @Test
    public void testLeftInRightString() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\u05BE\uFBA8a\u05BE\uFBA8", b, 0); // <right><right><left><right><right>
            throw new Exception("Not throwed directionality exception");
        } catch (IllegalArgumentException e) {}
    }

    /**
     * RFC 3454: requirement 3 prohibits strings such as <U+0627><U+0031>
     */
    @Test
    public void testRightWithoutTrailing() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\u0627\u0031", b, 0); // <right><neutral>
            throw new Exception("Not throwed directionality exception");
        } catch (IllegalArgumentException e) {}
    }

    /**
     * RFC 3454: requirement 3 ... allows strings such as <U+0627><U+0031><U+0628>
     */
    @Test
    public void testRightWithTrailing() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("\u0627\u0031\u0628", b, 0); // <right><neutral><right>
    }

    @Test
    public void testRightWithoutLeading() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\u0031\u0627", b, 0); // <neutral><right>
            throw new Exception("Not throwed directionality exception");
        } catch (IllegalArgumentException e) {}
    }

    @Test
    public void testRightWithoutLeadingAndTrailing() throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        try {
            StringPrep.encode("\u0031\u0627\u0032", b, 0); // <neutral><right><neutral>
            throw new Exception("Not throwed directionality exception");
        } catch (IllegalArgumentException e) {}
    }

    /**
     * RFC 3454 3.1 Commonly mapped to nothing / Table B.1
     */
    @Test
    public void testMappingToNothing() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a\u00AD\u1806\u200B\u2060\uFEFF\u034F\u180B\u180C\u180D\u200C\u200D\uFE00\uFE01\uFE02\uFE03\uFE04\uFE05\uFE06\uFE07\uFE08\uFE09\uFE0A\uFE0B\uFE0C\uFE0D\uFE0E\uFE0Fa", b, StringPrep.MAP_TO_NOTHING);
        Assert.assertArrayEquals(new byte[]{'a', 'a'}, b.toArray());
    }

    /**
     * RFC 3454 5.1 Space characters / Table C.1.2
     */
    @Test
    public void testMappingNonAsciiSpaceToSpace() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a\u00A0\u1680\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200A\u200B\u202F\u205F\u3000a", b, StringPrep.MAP_TO_SPACE);
        Assert.assertArrayEquals(new byte[]{'a', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', 'a'}, b.toArray());
    }

    /**
     * RFC 5802 5.1. SCRAM Attributes - characters ',' or '=' in usernames
     */
    @Test
    public void testMappingScramLoginChars() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a,b=c", b, StringPrep.MAP_SCRAM_LOGIN_CHARS);
        Assert.assertArrayEquals(new byte[]{'a', '=', '2', 'C', 'b', '=', '3', 'D', 'c'}, b.toArray());
    }

    /**
     * RFC 5802 5.1. SCRAM Attributes - characters ',' or '=' in usernames
     */
    @Test
    public void testUnMappingScramLoginChars() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a=2Cb=3Dc=2C", b, StringPrep.UNMAP_SCRAM_LOGIN_CHARS);
        Assert.assertArrayEquals(new byte[]{'a', ',', 'b', '=', 'c', ','}, b.toArray());
    }

    /**
     * RFC 3454 4. Normalization (sanity check)
     */
    @Test
    public void testNFKCSanity() {
        assertEquals("a\u00C5b", Normalizer.normalize("a\u0041\u030Ab", Normalizer.Form.NFKC));
    }

    /**
     * RFC 3454 4. Normalization
     */
    @Test
    public void testNFKC() {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode("a\u0041\u030Ab", b, StringPrep.NORMALIZE_KC);
        assertEquals("a\u00C5b", new String(b.toArray(), StandardCharsets.UTF_8));
    }

    /**
     * Mapping for case-folding used together with NFKC / Table B.2
     */
    @Test
    @Ignore("Case folding is not implemented yet, test mentioned in ELY-47")
    public void testCaseFoldingWithNFKC() {
        ByteStringBuilder b = new ByteStringBuilder();

        String before = 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        String after = 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u2172\u2173\u2174\u2175\u2176\u2177\u2178\u2179\u217A\u217B\u217C\u217D\u217E\u217F\u24D0\u24D1\u24D2\u24D3\u24D4\u24D5\u24D6\u24D7\u24D8\u24D9\u24DA\u24DB\u24DC\u24DD\u24DE\u24DF\u24E0\u24E1\u24E2\u24E3\u24E4\u24E5\u24E6\u24E7\u24E8\u24E9\u006800700061\u00610075\u006F0076\u00700061\u006E0061\u03BC0061\u006D0061\u006B0061\u006B0062\u006D0062\u00670062\u00700066\u006E0066\u03BC0066\u0068007A\u006B0068007A\u006D0068007A\u00670068007A\u00740068007A\u00700061\u006B00700061\u006D00700061\u006700700061\u00700076\u006E0076\u03BC0076\u006D0076\u006B0076\u006D0076\u00700077\u006E0077\u03BC0077\u006D0077\u006B0077\u006D0077\u006B03C9\u006D03C9\u00620071\u00632215006B0067\u0063006F002E\u00640062\u00670079\u00680070\u006B006B\u006B006D\u00700068\u00700070006D\u00700072\u00730076\u00770062\u00660066\u00660069\u0066006C\u006600660069\u00660066006C\u00730074\u00730074\u05740576\u05740565\u0574056B\u057E0576\u0574056D\uFF41\uFF42\uFF43\uFF44\uFF45\uFF46\uFF47\uFF48\uFF49\uFF4A\uFF4B\uFF4C\uFF4D\uFF4E\uFF4F\uFF50\uFF51\uFF52\uFF53\uFF54\uFF55\uFF56\uFF57\uFF58\uFF59\uFF5A\u10428\u10429\u1042A\u1042B\u1042C\u1042D\u1042E\u1042F\u10430\u10431\u10432\u10433\u10434\u10435\u10436\u10437\u10438\u10439\u1043A\u1043B\u1043C\u1043D\u1043E\u1043F\u10440\u10441\u10442\u10443\u10444\u10445\u10446\u10447\u10448\u10449\u1044A\u1044B\u1044C\u1044D\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0063\u0064\u0067\u006A\u006B\u006E\u006F\u0070\u0071\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0064\u0065\u0066\u0067\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u0061\u0062\u0064\u0065\u0066\u0067\u0069\u006A\u006B\u006C\u006D\u006F\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u0061\u0062\u0063\u0064\u0065\u0066\u0067\u0068\u0069\u006A\u006B\u006C\u006D\u006E\u006F\u0070\u0071\u0072\u0073\u0074\u0075\u0076\u0077\u0078\u0079\u007A\u03B1\u03B2\u03B3\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9\u03BA\u03BB\u03BC\u03BD\u03BE\u03BF\u03C0\u03C1\u03B8\u03C3\u03C4\u03C5\u03C6\u03C7\u03C8\u03C9\u03C3\u03B1\u03B2\u03B3\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9\u03BA\u03BB\u03BC\u03BD\u03BE\u03BF\u03C0\u03C1\u03B8\u03C3\u03C4\u03C5\u03C6\u03C7\u03C8\u03C9\u03C3\u03B1\u03B2\u03B3\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9\u03BA\u03BB\u03BC\u03BD\u03BE\u03BF\u03C0\u03C1\u03B8\u03C3\u03C4\u03C5\u03C6\u03C7\u03C8\u03C9\u03C3\u03B1\u03B2\u03B3\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9\u03BA\u03BB\u03BC\u03BD\u03BE\u03BF\u03C0\u03C1\u03B8\u03C3\u03C4\u03C5\u03C6\u03C7\u03C8\u03C9\u03C3\u03B1\u03B2\u03B3\u03B4\u03B5\u03B6\u03B7\u03B8\u03B9\u03BA\u03BB\u03BC\u03BD\u03BE\u03BF\u03C0\u03C1\u03B8\u03C3\u03C4\u03C5\u03C6\u03C7\u03C8\u03C9\u03C3";

        StringPrep.encode(before, b, StringPrep.NORMALIZE_KC);
        assertEquals(after, new String(b.toArray(), StandardCharsets.UTF_8));
    }

    @Test
    public void testForbidNonAsciiSpaces() throws Exception {
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x0000, 0x009F);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x00A0);
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x00A1, 0x167F);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x1680);
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x1681, 0x1FFF);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x2000, 0x200B);
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x200C, 0x202E);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x202F);
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x2030, 0x205E);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x205F);
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x2060, 0x2FFF);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x3000);
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0x3001, 0xD7FF);
        testForbidChars(StringPrep.FORBID_NON_ASCII_SPACES, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0xE000, 0x10FFFF);
    }

    @Test
    public void testForbidAsciiControl() throws Exception {
        testForbidChars(StringPrep.FORBID_ASCII_CONTROL, 0x0000, 0x001F);
        testAllowChars(StringPrep.FORBID_ASCII_CONTROL, 0x0020, 0x007E);
        testForbidChars(StringPrep.FORBID_ASCII_CONTROL, 0x007F);
        testAllowChars(StringPrep.FORBID_ASCII_CONTROL, 0x0080, 0xD7FF);
        testForbidChars(StringPrep.FORBID_ASCII_CONTROL, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_NON_ASCII_SPACES, 0xE000, 0x10FFFF);
    }

    @Test
    public void testForbidNonAsciiControl() throws Exception {
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x0000, 0x007F);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x0080, 0x009F);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x00A0, 0x06DC);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x06DD);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x06DE, 0x070E);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x070F);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x0710, 0x180D);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x180E);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x180F, 0x200B);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x200C, 0x200D);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x200E, 0x2027);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x2028, 0x2029);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x202A, 0x205F);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x2060, 0x2063);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x2064, 0x2069);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x206A, 0x206F);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x2070, 0xD7FF);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0xE000, 0xFEFE);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0xFEFF);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0xFF00, 0xFFF8);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0xFFF9, 0xFFFC);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0xFFFD, 0x1D172);
        testForbidChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x1D173, 0x1D17A);
        testAllowChars(StringPrep.FORBID_NON_ASCII_CONTROL, 0x1D17B, 0x10FFFF);
    }

    @Test
    public void testForbidPrivateUse() throws Exception {
        testAllowChars(StringPrep.FORBID_PRIVATE_USE, 0x0000, 0xD7FF);
        testForbidChars(StringPrep.FORBID_PRIVATE_USE, 0xD800, 0xDFFF); // separated surrogates
        testForbidChars(StringPrep.FORBID_PRIVATE_USE, 0xE000, 0xF8FF);
        testAllowChars(StringPrep.FORBID_PRIVATE_USE, 0xF900, 0xEFFFF);
        testForbidChars(StringPrep.FORBID_PRIVATE_USE, 0xF0000, 0xFFFFD);
        testAllowChars(StringPrep.FORBID_PRIVATE_USE, 0xFFFFE, 0xFFFFF);
        testForbidChars(StringPrep.FORBID_PRIVATE_USE, 0x100000, 0x10FFFD);
        testAllowChars(StringPrep.FORBID_PRIVATE_USE, 0x10FFFE, 0x10FFFF);
    }

    /**
     * 5.4 Non-character code points
     */
    @Test
    public void testForbidNonCharacter() throws Exception {
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x0000, 0xD7FF);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xE000, 0xFDCF);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xFDD0, 0xFDEF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xFDF0, 0xFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xFFFE, 0xFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x10000, 0x1FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x1FFFE, 0x1FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x20000, 0x2FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x2FFFE, 0x2FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x30000, 0x3FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x3FFFE, 0x3FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x40000, 0x4FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x4FFFE, 0x4FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x50000, 0x5FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x5FFFE, 0x5FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x60000, 0x6FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x6FFFE, 0x6FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x70000, 0x7FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x7FFFE, 0x7FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x80000, 0x8FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x8FFFE, 0x8FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x90000, 0x9FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x9FFFE, 0x9FFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xA0000, 0xAFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xAFFFE, 0xAFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xB0000, 0xBFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xBFFFE, 0xBFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xC0000, 0xCFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xCFFFE, 0xCFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xD0000, 0xDFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xDFFFE, 0xDFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xE0000, 0xEFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xEFFFE, 0xEFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0xF0000, 0xFFFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0xFFFFE, 0xFFFFF);
        testAllowChars(StringPrep.FORBID_NON_CHARACTER, 0x100000, 0x10FFFD);
        testForbidChars(StringPrep.FORBID_NON_CHARACTER, 0x10FFFE, 0x10FFFF);
    }

    /**
     * 5.5 Surrogate codes
     */
    @Test
    public void testForbidSurrogate() throws Exception {
        testAllowChars(StringPrep.FORBID_SURROGATE, 0x0000, 0xD7FF);
        testForbidChars(StringPrep.FORBID_SURROGATE, 0xD800, 0xDFFF);
        testAllowChars(StringPrep.FORBID_SURROGATE, 0xE000, 0x10FFFF);
    }

    /**
     * 5.6 Inappropriate for plain text
     */
    @Test
    public void testForbidInappropriateForPlainText() throws Exception {
        testAllowChars(StringPrep.FORBID_INAPPROPRIATE_FOR_PLAIN_TEXT, 0x0000, 0xD7FF);
        testForbidChars(StringPrep.FORBID_INAPPROPRIATE_FOR_PLAIN_TEXT, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_INAPPROPRIATE_FOR_PLAIN_TEXT, 0xE000, 0xFFF8);
        testForbidChars(StringPrep.FORBID_INAPPROPRIATE_FOR_PLAIN_TEXT, 0xFFF9, 0xFFFD);
        testAllowChars(StringPrep.FORBID_INAPPROPRIATE_FOR_PLAIN_TEXT, 0xFFFE, 0x10FFFF);
    }

    /**
     * 5.7 Inappropriate for canonical representation
     */
    @Test
    public void testForbidInappropriateForCanonicalRepresentation() throws Exception {
        testAllowChars(StringPrep.FORBID_INAPPROPRIATE_FOR_CANON_REP, 0x0000, 0x2FEF);
        testForbidChars(StringPrep.FORBID_INAPPROPRIATE_FOR_CANON_REP, 0x2FF0, 0x2FFB);
        testAllowChars(StringPrep.FORBID_INAPPROPRIATE_FOR_CANON_REP, 0x2FFC, 0xD7FF);
        testForbidChars(StringPrep.FORBID_INAPPROPRIATE_FOR_CANON_REP, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_INAPPROPRIATE_FOR_CANON_REP, 0xE000, 0x10FFFF);
    }

    /**
     * 5.8 Change display properties or are deprecated
     */
    @Test
    public void testForbidChangeDisplayAndDeprecated() throws Exception {
        testAllowChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x0000, 0x033F);
        testForbidChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x0340, 0x0341);
        testAllowChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x0342, 0x200D);
        testForbidChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x200E, 0x200F);
        testAllowChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x2010, 0x2029);
        testForbidChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x202A, 0x202E);
        testAllowChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x202F, 0x2069);
        testForbidChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x206A, 0x206F);
        testAllowChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0x2070, 0xD7FF);
        testForbidChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_CHANGE_DISPLAY_AND_DEPRECATED, 0xE000, 0x10FFFF);
    }

    /**
     * 5.9 Tagging characters
     */
    @Test
    public void testForbidTagging() throws Exception {
        testAllowChars(StringPrep.FORBID_TAGGING, 0x0000, 0xD7FF);
        testForbidChars(StringPrep.FORBID_TAGGING, 0xD800, 0xDFFF); // separated surrogates
        testAllowChars(StringPrep.FORBID_TAGGING, 0xE000, 0xE0000);
        testForbidChars(StringPrep.FORBID_TAGGING, 0xE0001);
        testAllowChars(StringPrep.FORBID_TAGGING, 0xE0002, 0xE001F);
        testForbidChars(StringPrep.FORBID_TAGGING, 0xE0020, 0xE007F);
    }

    /**
     * A.1 Unassigned code points in Unicode 3.2
     */
    @Test
    @Ignore("This implementation use newer Unicode then RFC of StringPrep (which use Unicode 3.2), see ELY-48")
    public void testForbidUnassigned() throws Exception {
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0221);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0234, 0x024F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x02AE, 0x02AF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x02EF, 0x02FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0350, 0x035F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0370, 0x0373);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0376, 0x0379);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x037B, 0x037D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x037F, 0x0383);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x038B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x038D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x03A2);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x03CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x03F7, 0x03FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0487);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x04CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x04F6, 0x04F7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x04FA, 0x04FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0510, 0x0530);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0557, 0x0558);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0560);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0588);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x058B, 0x0590);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x05A2);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x05BA);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x05C5, 0x05CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x05EB, 0x05EF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x05F5, 0x060B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x060D, 0x061A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x061C, 0x061E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0620);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x063B, 0x063F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0656, 0x065F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x06EE, 0x06EF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x06FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x070E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x072D, 0x072F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x074B, 0x077F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x07B2, 0x0900);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0904);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x093A, 0x093B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x094E, 0x094F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0955, 0x0957);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0971, 0x0980);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0984);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x098D, 0x098E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0991, 0x0992);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09A9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09B1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09B3, 0x09B5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09BA, 0x09BB);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09BD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09C5, 0x09C6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09C9, 0x09CA);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09CE, 0x09D6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09D8, 0x09DB);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09DE);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09E4, 0x09E5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x09FB, 0x0A01);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A03, 0x0A04);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A0B, 0x0A0E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A11, 0x0A12);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A29);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A31);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A34);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A37);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A3A, 0x0A3B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A3D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A43, 0x0A46);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A49, 0x0A4A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A4E, 0x0A58);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A5D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A5F, 0x0A65);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A75, 0x0A80);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A84);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A8C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A8E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0A92);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AA9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AB1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AB4);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0ABA, 0x0ABB);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AC6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0ACA);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0ACE, 0x0ACF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AD1, 0x0ADF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AE1, 0x0AE5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0AF0, 0x0B00);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B04);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B0D, 0x0B0E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B11, 0x0B12);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B29);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B31);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B34, 0x0B35);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B3A, 0x0B3B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B44, 0x0B46);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B49, 0x0B4A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B4E, 0x0B55);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B58, 0x0B5B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B5E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B62, 0x0B65);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B71, 0x0B81);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B84);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B8B, 0x0B8D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B91);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B96, 0x0B98);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B9B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0B9D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BA0, 0x0BA2);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BA5, 0x0BA7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BAB, 0x0BAD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BB6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BBA, 0x0BBD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BC3, 0x0BC5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BC9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BCE, 0x0BD6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BD8, 0x0BE6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0BF3, 0x0C00);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C04);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C0D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C11);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C29);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C34);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C3A, 0x0C3D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C45);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C49);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C4E, 0x0C54);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C57, 0x0C5F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C62, 0x0C65);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C70, 0x0C81);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C84);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C8D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0C91);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CA9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CB4);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CBA, 0x0CBD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CC5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CC9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CCE, 0x0CD4);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CD7, 0x0CDD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CDF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CE2, 0x0CE5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0CF0, 0x0D01);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D04);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D0D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D11);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D29);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D3A, 0x0D3D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D44, 0x0D45);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D49);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D4E, 0x0D56);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D58, 0x0D5F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D62, 0x0D65);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D70, 0x0D81);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D84);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0D97, 0x0D99);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DB2);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DBC);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DBE, 0x0DBF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DC7, 0x0DC9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DCB, 0x0DCE);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DD5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DD7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DE0, 0x0DF1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0DF5, 0x0E00);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E3B, 0x0E3E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E5C, 0x0E80);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E83);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E85, 0x0E86);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E89);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E8B, 0x0E8C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E8E, 0x0E93);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0E98);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EA0);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EA4);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EA6);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EA8, 0x0EA9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EAC);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EBA);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EBE, 0x0EBF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EC5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EC7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0ECE, 0x0ECF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EDA, 0x0EDB);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0EDE, 0x0EFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0F48);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0F6B, 0x0F70);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0F8C, 0x0F8F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0F98);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0FBD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0FCD, 0x0FCE);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x0FD0, 0x0FFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1022);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1028);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x102B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1033, 0x1035);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x103A, 0x103F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x105A, 0x109F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x10C6, 0x10CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x10F9, 0x10FA);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x10FC, 0x10FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x115A, 0x115E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x11A3, 0x11A7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x11FA, 0x11FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1207);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1247);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1249);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x124E, 0x124F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1257);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1259);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x125E, 0x125F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1287);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1289);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x128E, 0x128F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12AF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12B1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12B6, 0x12B7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12BF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12C1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12C6, 0x12C7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12D7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x12EF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x130F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1311);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1316, 0x1317);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x131F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1347);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x135B, 0x1360);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x137D, 0x139F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x13F5, 0x1400);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1677, 0x167F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x169D, 0x169F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x16F1, 0x16FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x170D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1715, 0x171F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1737, 0x173F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1754, 0x175F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x176D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1771);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1774, 0x177F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x17DD, 0x17DF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x17EA, 0x17FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x180F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x181A, 0x181F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1878, 0x187F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x18AA, 0x1DFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1E9C, 0x1E9F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1EFA, 0x1EFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F16, 0x1F17);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F1E, 0x1F1F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F46, 0x1F47);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F4E, 0x1F4F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F58);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F5A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F5C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F5E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1F7E, 0x1F7F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FB5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FC5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FD4, 0x1FD5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FDC);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FF0, 0x1FF1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FF5);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1FFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2053, 0x2056);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2058, 0x205E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2064, 0x2069);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2072, 0x2073);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x208F, 0x209F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x20B2, 0x20CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x20EB, 0x20FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x213B, 0x213C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x214C, 0x2152);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2184, 0x218F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x23CF, 0x23FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2427, 0x243F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x244B, 0x245F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x24FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2614, 0x2615);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2618);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x267E, 0x267F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x268A, 0x2700);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2705);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x270A, 0x270B);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2728);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x274C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x274E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2753, 0x2755);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2757);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x275F, 0x2760);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2795, 0x2797);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x27B0);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x27BF, 0x27CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x27EC, 0x27EF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2B00, 0x2E7F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2E9A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2EF4, 0x2EFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2FD6, 0x2FEF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2FFC, 0x2FFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x3040);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x3097, 0x3098);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x3100, 0x3104);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x312D, 0x3130);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x318F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x31B8, 0x31EF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x321D, 0x321F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x3244, 0x3250);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x327C, 0x327E);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x32CC, 0x32CF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x32FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x3377, 0x337A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x33DE, 0x33DF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x33FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x4DB6, 0x4DFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x9FA6, 0x9FFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xA48D, 0xA48F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xA4C7, 0xABFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xD7A4, 0xD7FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFA2E, 0xFA2F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFA6B, 0xFAFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB07, 0xFB12);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB18, 0xFB1C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB37);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB3D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB3F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB42);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFB45);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFBB2, 0xFBD2);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFD40, 0xFD4F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFD90, 0xFD91);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFDC8, 0xFDCF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFDFD, 0xFDFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE10, 0xFE1F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE24, 0xFE2F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE47, 0xFE48);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE53);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE67);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE6C, 0xFE6F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFE75);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFEFD, 0xFEFE);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFF00);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFBF, 0xFFC1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFC8, 0xFFC9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFD0, 0xFFD1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFD8, 0xFFD9);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFDD, 0xFFDF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFE7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xFFEF, 0xFFF8);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x10000, 0x102FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1031F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x10324, 0x1032F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1034B, 0x103FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x10426, 0x10427);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1044E, 0x1CFFF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D0F6, 0x1D0FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D127, 0x1D129);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D1DE, 0x1D3FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D455);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D49D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4A0, 0x1D4A1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4A3, 0x1D4A4);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4A7, 0x1D4A8);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4AD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4BA);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4BC);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4C1);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D4C4);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D506);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D50B, 0x1D50C);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D515);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D51D);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D53A);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D53F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D545);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D547, 0x1D549);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D551);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D6A4, 0x1D6A7);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D7CA, 0x1D7CD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x1D800, 0x1FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2A6D7, 0x2F7FF);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x2FA1E, 0x2FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x30000, 0x3FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x40000, 0x4FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x50000, 0x5FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x60000, 0x6FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x70000, 0x7FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x80000, 0x8FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0x90000, 0x9FFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xA0000, 0xAFFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xB0000, 0xBFFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xC0000, 0xCFFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xD0000, 0xDFFFD);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xE0000);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xE0002, 0xE001F);
        testForbidChars(StringPrep.FORBID_UNASSIGNED, 0xE0080, 0xEFFFD);
    }

    // ---------------------- helpers ----------------------

    private String codePointToString(int codePoint) {
        if (codePoint <= 0xFFFF) {
            return new String(new char[]{(char) codePoint}); // allow separated surrogates, but only 2-bytes codepoints
        } else {
            ByteStringBuilder b = new ByteStringBuilder();
            b.appendUtf8Raw(codePoint);
            return new String(b.toArray(), StandardCharsets.UTF_8); // String(byte[]) not permit separated surrogates
        }
    }

    private void testForbidChars(long profile, int codePoint) throws Exception {
        try {
            ByteStringBuilder b = new ByteStringBuilder();
            StringPrep.encode(codePointToString(codePoint), b, profile);
            fail("Not throwed IllegalArgumentException for " + Integer.toHexString(codePoint) + "!");
        } catch (IllegalArgumentException e) {}
    }

    private void testAllowChars(long profile, int codePoint) throws Exception {
        ByteStringBuilder b = new ByteStringBuilder();
        StringPrep.encode(codePointToString(codePoint), b, profile);
    }

    private void testForbidChars(long profile, int from, int to) throws Exception {
        for (int i = from; i <= to; i++) {
            testForbidChars(profile, i);
        }
    }

    private void testAllowChars(long profile, int from, int to) throws Exception {
        for (int i = from; i <= to; i++) {
            testAllowChars(profile, i);
        }
    }

    @Test
    public void testHelpersCodePointToStringConversion() throws Exception {
        assertArrayEquals(new char[]{(char)0xD800}, codePointToString(0xD800).toCharArray());
        assertEquals("\uD800", codePointToString(0xD800));
        assertEquals("\uDBB6\uDC00", codePointToString(0xFD800));
        assertEquals("\uDBFF\uDFFF", codePointToString(0x10FFFF));
    }

}