/*
Copyright 2013 Thomas F. Morris & other contributors
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package com.google.refine.clustering.binning;

import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.refine.RefineTest;
import com.google.refine.clustering.binning.FingerprintKeyer;
import com.google.refine.clustering.binning.Keyer;
import com.google.refine.clustering.binning.NGramFingerprintKeyer;


public class KeyerTests extends RefineTest {

    private static Keyer keyer;
    
    private static final String[][] testStrings = {
        {"the multi multi word test","multi test the word"},
        {" école ÉCole ecoLe ", "ecole"},
        {"a b c d","a b c d"},
        {" d c b a ","a b c d"},
        {"\tABC \t DEF ","abc def"}, // test leading and trailing whitespace
        {"bbb\taaa","aaa bbb"},
//        {"å","aa"}, // Requested by issue #650, but conflicts with diacritic folding
        {"æø","aeoe"}, // Norwegian replacements from #650
        {"©ß","css"}, // issue #409 esszet
        {"\u00D0\u00DE", "dth"}, // Icelandic eth and thorn 
        {"ﬀﬁﬂﬃﬅﬆ", "fffiflffistst"}, // ligatures
        // Test legacy replacements
        {"\u00C0\u00C1\u00C2\u00C3\u00C4\u00C5\u00E0\u00E1\u00E2\u00E3\u00E4\u00E5\u0100\u0101\u0102\u0103\u0104\u0105", "aaaaaaaaaaaaaaaaaa"},
        {"\u00C7\u00E7\u0106\u0107\u0108\u0109\u010A\u010B\u010C\u010D", "cccccccccc"},
        {"\u00D0\u00F0\u010E\u010F\u0110\u0111", "dddddd"},
        {"\u00C8\u00C9\u00CA\u00CB\u00E8\u00E9\u00EA\u00EB\u0112\u0113\u0114\u0115\u0116\u0117\u0118\u0119\u011A\u011B", "eeeeeeeeeeeeeeeeee"},
        {"\u011C\u011D\u011E\u011F\u0120\u0121\u0122\u0123", "gggggggg"},
        {"\u0124\u0125", "hh"},
        {"\u0126\u0127", "hh"},
        {"\u00CC\u00CD\u00CE\u00CF\u00EC\u00ED\u00EE\u00EF\u0128\u0129\u012A\u012B\u012C\u012D\u012E\u012F\u0130", "iiiiiiiiiiiiiiiii"},
        {"\u0131", "i"},
        {"\u0134\u0135", "jj"},
        {"\u0136\u0137", "kk"},
        {"\u0138", "k"},
        {"\u0139\u013A\u013B\u013C\u013D\u013E\u0141\u0142", "llllllll"},
        {"\u013F\u0140", "ll"},
        {"\u00D1\u00F1\u0143\u0144\u0145\u0146\u0147\u0148", "nnnnnnnn"},
        {"\u0149", "n"}, // decomposed to 'n, but then punctuation is stripped
        {"\u014A\u014B", "nn"},
        {"\u00D2\u00D3\u00D4\u00D5\u00D6\u00F2\u00F3\u00F4\u00F5\u00F6\u014C\u014D\u014E\u014F\u0150\u0151", "oooooooooooooooo"},
        {"\u00D8\u00F8", "oeoe"}, // O with stroke we decompose to oe instead of o
        {"\u0154\u0155\u0156\u0157\u0158\u0159", "rrrrrr"},
        {"\u015A\u015B\u015C\u015D\u015E\u015F\u0160\u0161\u017F", "sssssssss"},
        {"\u0162\u0163\u0164\u0165\u0166\u0167", "tttttt"},
        {"\u00D9\u00DA\u00DB\u00DC\u00F9\u00FA\u00FB\u00FC\u0168\u0169\u016A\u016B\u016C\u016D\u016E\u016F\u0170\u0171\u0172\u0173", "uuuuuuuuuuuuuuuuuuuu"},
        {"\u0174\u0175", "ww"},
        {"\u00DD\u00FD\u00FF\u0176\u0177\u0178", "yyyyyy"},
        {"\u0179\u017A\u017B\u017C\u017D\u017E", "zzzzzz"},
        // Latin-1 Supplement
        {//"€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ " + // These are all considered control characters
         //"¡¢£¤¥¦§¨©ª«¬­®¯°±²³´µ¶·¸¹º»¼½¾¿" // punctuation
         "ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõöøùúûüýþÿ",
         "aaaaaaaeceeeeiiiidnooooooeuuuuythssaaaaaaaeceeeeiiiidnooooooeuuuuythy"},
        // Latin Extended A
        {"ĀāĂăĄąĆćĈĉĊċČčĎďĐđĒēĔĕĖėĘęĚěĜĝĞğĠġĢģĤĥĦħĨĩĪīĬĭĮįİıĲĳĴĵĶķĸĹĺĻļĽľĿŀŁłŃńŅņŇňŉŊŋŌōŎŏŐőŒœŔŕŖŗŘřŚśŜŝŞşŠšŢţŤťŦŧŨũŪūŬŭŮůŰűŲųŴŵŶŷŸŹźŻżŽžſ",
         "aaaaaaccccccccddddeeeeeeeeeegggggggghhhhiiiiiiiiiiijijjjkkkllllllllllnnnnnnnnnoooooooeoerrrrrrssssssssttttttuuuuuuuuuuuuwwyyyzzzzzzs"},
        // Latin Extended B
        // TODO: These don't get folded to ASCII equivalents. Not sure if they should be
//        {"ƄƅƉƊƋƌƔƕƖƗƘƙƚƛƜƝƞƟƠơƢƣƤƥƦƧƨƩƪƫƬƭƮƯưƱƲƳƴƵƶƷƸƹƺƻƼƽƾƿǀǁǂǃǄǅǆǇǈǉǊǋǌǍǎǏǐǑǒǓǔǕǖǗǘǙǚǛǜǝ",
//         "bbddddhiikkllmnnooooopprssssttttuuuuyyzz                      aaiioouuuuuuuuuux"},
//        {"ǞǟǠǡǢǣǤǥǦǧǨǩǪǫǬǭǮǯǰǱǲǳǴǵǶǷǸǹǺǻǼǽǾǿȀȁȂȃȄȅȆȇȈȉȊȋȌȍȎȏȐȑȒȓȔȕȖȗȘșȚțȜȝȞȟȠȡȢȣȤȥȦȧȨȩȪȫȬȭȮȯȰȱȲȳȴȵȶȷȸȹȺȻȼȽȾȿɀɁɂɃɄɅɆɇɈɉɊɋɌɍɎɏ",
//         "aaaaaeaeggggkkqqqqqssjdzdzggpnnaaaeaeooaaaeeeeeiiiioooorrrruuuusstt    zzaaeeooooooooyy"},
        // Latin Extended Additional
        {"ḀḁḂḃḄḅḆḇḈḉḊḋḌḍḎḏḐḑḒḓḔḕḖḗḘḙḚḛḜḝḞḟḠḡḢḣḤḥḦḧḨḩḪḫḬḭḮḯḰḱḲḳḴḵḶḷḸḹḺḻḼḽḾḿṀṁṂṃṄṅṆṇṈṉṊṋṌṍṎṏṐṑṒṓṔṕṖṗ",
         "aabbbbbbccddddddddddeeeeeeeeeeffgghhhhhhhhhhiiiikkkkkkllllllllmmmmmmnnnnnnnnoooooooopppp"},
        {"ṘṙṚṛṜṝṞṟṠṡṢṣṤṥṦṧṨṩṪṫṬṭṮṯṰṱṲṳṴṵṶṷṸṹṺṻṼṽṾṿẀẁẂẃẄẅẆẇẈẉẊẋẌẍẎẏẐẑẒẓẔẕ",
         "rrrrrrrrssssssssssttttttttuuuuuuuuuuvvvvwwwwwwwwwwxxxxyyzzzzzz"},
        {"ẖẗẘẙẚẛẜẝẞẠạẢảẤấẦầẨẩẪẫẬậẮắẰằẲẳẴẵẶặẸẹẺẻẼẽẾếỀềỂểỄễỆệ",
         "htwyasssssaaaaaaaaaaaaaaaaaaaaaaaaeeeeeeeeeeeeeeee"},
        // Latin Extended C - TODO: not supported yet
//        {"ⱠⱡⱢⱣⱤⱥⱦⱧⱨⱩⱪⱫⱬⱭⱮⱯⱰⱱⱲⱳⱴⱵⱶⱷⱸⱹⱺⱻⱼⱽⱾⱿ",
//         "lllprathhkkzzamaaavwwwv   e ejvsz"},
        // Latin Extended D
        {"", ""},
        // Latin Extended E
        {"", ""},
        // TODO: Add tests for non-Western languages
        {"", ""},
    };

    private static final String[][] testNGramStrings = {
        {"abcdefg","abbccddeeffg"},
        {" a,b.c d\te!f?g ","abbccddeeffg"},
        {"écÉCec","ceec"},
        {"",""}, //TODO: add more test cases
        {"",""},
    };
    
    @Override
    @BeforeTest
    public void init() {
        logger = LoggerFactory.getLogger(this.getClass());
    }
    
    @BeforeMethod
    public void SetUp() {
         keyer = new FingerprintKeyer();
    }

    @AfterMethod
    public void TearDown() {
        keyer = null;
    }
    
    @Test(expectedExceptions=IllegalArgumentException.class)
    public void testInvalidParams() {        
        keyer.key("test",(Object[])new String[]{"foo"});
    }
    
    @Test
    public void testFingerprintKeyer() {
        for (String[] ss : testStrings) {
            Assert.assertEquals(ss.length,2,"Invalid test"); // Not a valid test
            Assert.assertEquals(keyer.key(ss[0]),ss[1],
                    "Fingerprint for string: " + ss[0] + " failed");
        }
    }
    
    @Test
    public void testNGramKeyer() {    
        keyer = new NGramFingerprintKeyer();
        for (String[] ss : testNGramStrings) {
            Assert.assertEquals(ss.length,2,"Invalid test"); // Not a valid test
            Assert.assertEquals(keyer.key(ss[0]),ss[1],
                    "Fingerprint for string: " + ss[0] + " failed");
        }
    }

}
