001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017
018package org.apache.commons.codec.language.bm;
019
020import static org.junit.Assert.assertEquals;
021import static org.junit.Assert.assertThat;
022
023import org.hamcrest.BaseMatcher;
024import org.hamcrest.Description;
025import org.junit.Test;
026
027/**
028 * Tests Rule.
029 *
030 * @since 1.6
031 */
032public class RuleTest {
033    private static class NegativeIntegerBaseMatcher extends BaseMatcher<Integer> {
034        @Override
035        public void describeTo(final Description description) {
036            description.appendText("value should be negative");
037        }
038
039        @Override
040        public boolean matches(final Object item) {
041            return ((Integer) item).intValue() < 0;
042        }
043    }
044
045    private Rule.Phoneme[][] makePhonemes() {
046        final String[][] words = {
047                { "rinD", "rinDlt", "rina", "rinalt", "rino", "rinolt", "rinu", "rinult" },
048                { "dortlaj", "dortlej", "ortlaj", "ortlej", "ortlej-dortlaj" } };
049        final Rule.Phoneme[][] phonemes = new Rule.Phoneme[words.length][];
050
051        for (int i = 0; i < words.length; i++) {
052            final String[] words_i = words[i];
053            final Rule.Phoneme[] phonemes_i = phonemes[i] = new Rule.Phoneme[words_i.length];
054            for (int j = 0; j < words_i.length; j++) {
055                phonemes_i[j] = new Rule.Phoneme(words_i[j], Languages.NO_LANGUAGES);
056            }
057        }
058
059        return phonemes;
060    }
061
062    @Test
063    public void testPhonemeComparedToLaterIsNegative() {
064        for (final Rule.Phoneme[] phs : makePhonemes()) {
065            for (int i = 0; i < phs.length; i++) {
066                for (int j = i + 1; j < phs.length; j++) {
067                    final int c = Rule.Phoneme.COMPARATOR.compare(phs[i], phs[j]);
068
069                    assertThat("Comparing " + phs[i].getPhonemeText() + " to " + phs[j].getPhonemeText() + " should be negative", Integer.valueOf(c),
070                            new NegativeIntegerBaseMatcher());
071                }
072            }
073        }
074    }
075
076    @Test
077    public void testPhonemeComparedToSelfIsZero() {
078        for (final Rule.Phoneme[] phs : makePhonemes()) {
079            for (final Rule.Phoneme ph : phs) {
080                assertEquals("Phoneme compared to itself should be zero: " + ph.getPhonemeText(), 0,
081                        Rule.Phoneme.COMPARATOR.compare(ph, ph));
082            }
083        }
084    }
085
086    @Test
087    public void testSubSequenceWorks() {
088        // AppendableCharSequence is private to Rule. We can only make it through a Phoneme.
089
090        final Rule.Phoneme a = new Rule.Phoneme("a", null);
091        final Rule.Phoneme b = new Rule.Phoneme("b", null);
092        final Rule.Phoneme cd = new Rule.Phoneme("cd", null);
093        final Rule.Phoneme ef = new Rule.Phoneme("ef", null);
094        final Rule.Phoneme ghi = new Rule.Phoneme("ghi", null);
095        final Rule.Phoneme jkl = new Rule.Phoneme("jkl", null);
096
097        assertEquals('a', a.getPhonemeText().charAt(0));
098        assertEquals('b', b.getPhonemeText().charAt(0));
099        assertEquals('c', cd.getPhonemeText().charAt(0));
100        assertEquals('d', cd.getPhonemeText().charAt(1));
101        assertEquals('e', ef.getPhonemeText().charAt(0));
102        assertEquals('f', ef.getPhonemeText().charAt(1));
103        assertEquals('g', ghi.getPhonemeText().charAt(0));
104        assertEquals('h', ghi.getPhonemeText().charAt(1));
105        assertEquals('i', ghi.getPhonemeText().charAt(2));
106        assertEquals('j', jkl.getPhonemeText().charAt(0));
107        assertEquals('k', jkl.getPhonemeText().charAt(1));
108        assertEquals('l', jkl.getPhonemeText().charAt(2));
109
110        final Rule.Phoneme a_b = new Rule.Phoneme(a, b);
111        assertEquals('a', a_b.getPhonemeText().charAt(0));
112        assertEquals('b', a_b.getPhonemeText().charAt(1));
113        assertEquals("ab", a_b.getPhonemeText().subSequence(0, 2).toString());
114        assertEquals("a", a_b.getPhonemeText().subSequence(0, 1).toString());
115        assertEquals("b", a_b.getPhonemeText().subSequence(1, 2).toString());
116
117        final Rule.Phoneme cd_ef = new Rule.Phoneme(cd, ef);
118        assertEquals('c', cd_ef.getPhonemeText().charAt(0));
119        assertEquals('d', cd_ef.getPhonemeText().charAt(1));
120        assertEquals('e', cd_ef.getPhonemeText().charAt(2));
121        assertEquals('f', cd_ef.getPhonemeText().charAt(3));
122        assertEquals("c", cd_ef.getPhonemeText().subSequence(0, 1).toString());
123        assertEquals("d", cd_ef.getPhonemeText().subSequence(1, 2).toString());
124        assertEquals("e", cd_ef.getPhonemeText().subSequence(2, 3).toString());
125        assertEquals("f", cd_ef.getPhonemeText().subSequence(3, 4).toString());
126        assertEquals("cd", cd_ef.getPhonemeText().subSequence(0, 2).toString());
127        assertEquals("de", cd_ef.getPhonemeText().subSequence(1, 3).toString());
128        assertEquals("ef", cd_ef.getPhonemeText().subSequence(2, 4).toString());
129        assertEquals("cde", cd_ef.getPhonemeText().subSequence(0, 3).toString());
130        assertEquals("def", cd_ef.getPhonemeText().subSequence(1, 4).toString());
131        assertEquals("cdef", cd_ef.getPhonemeText().subSequence(0, 4).toString());
132
133        final Rule.Phoneme a_b_cd = new Rule.Phoneme(new Rule.Phoneme(a, b), cd);
134        assertEquals('a', a_b_cd.getPhonemeText().charAt(0));
135        assertEquals('b', a_b_cd.getPhonemeText().charAt(1));
136        assertEquals('c', a_b_cd.getPhonemeText().charAt(2));
137        assertEquals('d', a_b_cd.getPhonemeText().charAt(3));
138        assertEquals("a", a_b_cd.getPhonemeText().subSequence(0, 1).toString());
139        assertEquals("b", a_b_cd.getPhonemeText().subSequence(1, 2).toString());
140        assertEquals("c", a_b_cd.getPhonemeText().subSequence(2, 3).toString());
141        assertEquals("d", a_b_cd.getPhonemeText().subSequence(3, 4).toString());
142        assertEquals("ab", a_b_cd.getPhonemeText().subSequence(0, 2).toString());
143        assertEquals("bc", a_b_cd.getPhonemeText().subSequence(1, 3).toString());
144        assertEquals("cd", a_b_cd.getPhonemeText().subSequence(2, 4).toString());
145        assertEquals("abc", a_b_cd.getPhonemeText().subSequence(0, 3).toString());
146        assertEquals("bcd", a_b_cd.getPhonemeText().subSequence(1, 4).toString());
147        assertEquals("abcd", a_b_cd.getPhonemeText().subSequence(0, 4).toString());
148    }
149}