1--TEST-- 2levenshtein() function test 3--FILE-- 4<?php 5 6function test_me($title,$expect,$text1,$text2,$cost1=0,$cost2=0,$cost3=0) { 7 8 if($cost1==0) 9 $result=levenshtein($text1,$text2); 10 else 11 $result=levenshtein($text1,$text2,$cost1,$cost2,$cost3); 12 13 if($result==$expect) return 0; 14 15 echo "$title: result is $result instead of $expect "; 16 echo "for '$text1'/'$text2' "; 17 if($cost1) echo "($cost1:$cost2:$cost3)"; 18 echo "\n"; 19 20 return 1; 21} 22 23$n=0; 24 25$n += test_me("equal" , 0, "12345", "12345"); 26$n += test_me("1st empty" , 3, "", "xzy"); 27$n += test_me("2nd empty" , 3, "xzy", ""); 28$n += test_me("both empty" , 0, "", ""); 29$n += test_me("1 char" , 1, "1", "2"); 30$n += test_me("2 char swap", 2, "12", "21"); 31 32$n += test_me("inexpensive delete", 2, "2121", "11", 2, 1, 1); 33$n += test_me("expensive delete" , 10, "2121", "11", 2, 1, 5); 34$n += test_me("inexpensive insert", 2, "11", "2121", 1, 1, 1); 35$n += test_me("expensive insert" , 10, "11", "2121", 5, 1, 1); 36 37$n += test_me("expensive replace" , 3, "111", "121", 2, 3, 2); 38$n += test_me("very expensive replace", 4, "111", "121", 2, 9, 2); 39 40$n += test_me("bug #7368", 2, "13458", "12345"); 41$n += test_me("bug #7368", 2, "1345", "1234"); 42 43$n += test_me("bug #6562", 1, "debugg", "debug"); 44$n += test_me("bug #6562", 1, "ddebug", "debug"); 45$n += test_me("bug #6562", 2, "debbbug", "debug"); 46$n += test_me("bug #6562", 1, "debugging", "debuging"); 47 48$n += test_me("bug #16473", 2, "a", "bc"); 49$n += test_me("bug #16473", 2, "xa", "xbc"); 50$n += test_me("bug #16473", 2, "xax", "xbcx"); 51$n += test_me("bug #16473", 2, "ax", "bcx"); 52 53 54echo ($n==0)?"all passed\n":"$n failed\n"; 55 56?> 57--EXPECT-- 58all passed 59