From ee8e633e8b2f64b894bcfdfe1b0b8f4eed2e6d03 Mon Sep 17 00:00:00 2001
From: Antony Dovgal <tony2001@php.net>
Date: Tue, 21 Nov 2006 17:40:38 +0000
Subject: [PATCH] remove redundant error message add test by <zoe dot slattery
 at googlemail dot com>

---
 ext/standard/levenshtein.c                  |  2 +-
 ext/standard/tests/strings/levenshtein.phpt | 86 +++++++++++++++++++++
 2 files changed, 87 insertions(+), 1 deletion(-)
 create mode 100644 ext/standard/tests/strings/levenshtein.phpt

diff --git a/ext/standard/levenshtein.c b/ext/standard/levenshtein.c
index c953daf8b2..5aac680ee1 100644
--- a/ext/standard/levenshtein.c
+++ b/ext/standard/levenshtein.c
@@ -146,7 +146,7 @@ PHP_FUNCTION(levenshtein)
 		WRONG_PARAM_COUNT;
 	}	
 
-	if (distance < 0) {
+	if (distance < 0 && /* TODO */ ZEND_NUM_ARGS() != 3) {
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "Argument string(s) too long");
 	}
 	
diff --git a/ext/standard/tests/strings/levenshtein.phpt b/ext/standard/tests/strings/levenshtein.phpt
new file mode 100644
index 0000000000..1997eca599
--- /dev/null
+++ b/ext/standard/tests/strings/levenshtein.phpt
@@ -0,0 +1,86 @@
+--TEST--
+levenshtein() function test
+--FILE--
+<?php 
+ 
+function test_me($title,$expect,$text1,$text2,$cost1="",$cost2="",$cost3="") {
+ 
+  if ($cost1=="") { 
+          $result=levenshtein($text1,$text2);
+  }
+  elseif ($cost2=="") {
+          $result=levenshtein($text1,$text2,$cost1);
+  }
+  else  {
+    $result=levenshtein($text1,$text2,$cost1,$cost2,$cost3);
+  }
+        if($result==$expect) return 0;
+       
+        echo "$title: result is $result instead of $expect ";
+        echo "for '$text1'/'$text2' ";
+        if($cost1) echo "($cost1:$cost2:$cost3)";
+        echo "\n";
+        
+        return 1;
+}
+ 
+$n=0;
+ 
+$n += test_me("equal"      , 0, "12345", "12345");
+$n += test_me("1st empty"  , 3,      "",   "xzy");
+$n += test_me("2nd empty"  , 3,   "xzy",      "");
+$n += test_me("both empty" , 0,      "",      "");
+$n += test_me("1 char"     , 1,     "1",     "2");
+$n += test_me("2 char swap", 2,    "12",    "21");
+ 
+$n += test_me("inexpensive delete",  2, "2121",   "11", 2, 1, 1);
+$n += test_me("expensive delete"  , 10, "2121",   "11", 2, 1, 5);
+$n += test_me("inexpensive insert",  2,   "11", "2121", 1, 1, 1);
+$n += test_me("expensive insert"  , 10,   "11", "2121", 5, 1, 1);
+ 
+$n += test_me("expensive replace"     , 3, "111", "121", 2, 3, 2);
+$n += test_me("very expensive replace", 4, "111", "121", 2, 9, 2);
+ 
+$n += test_me("bug #7368", 2,     "13458",    "12345");
+$n += test_me("bug #7368", 2,      "1345",     "1234");
+ 
+$n += test_me("bug #6562", 1,    "debugg",    "debug");
+$n += test_me("bug #6562", 1,    "ddebug",    "debug");
+$n += test_me("bug #6562", 2,   "debbbug",    "debug");
+$n += test_me("bug #6562", 1, "debugging", "debuging");
+ 
+$n += test_me("bug #16473", 2, "a", "bc");
+$n += test_me("bug #16473", 2, "xa", "xbc");
+$n += test_me("bug #16473", 2, "xax", "xbcx");
+$n += test_me("bug #16473", 2, "ax", "bcx");
+ 
+$n += test_me("custom", -1, "111", "121", "my_levcode");
+$n += test_me("lt maxlength1", 254, "AbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsu", "A");
+$n += test_me("gt maxlength1", -1, "AbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuv", "A");
+ 
+$n += test_me("lt maxlength2", 254, "A", "AbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsu");
+$n += test_me("gt maxlength2", -1, "A",  "AbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrstuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuvwxyzAbcdefghijklmnopqrtsuv");
+ 
+echo ($n==0)?"all passed\n":"$n failed\n";
+
+var_dump(levenshtein(array(), array()));
+var_dump(levenshtein("", "", -1, -1, -1));
+var_dump(levenshtein("", "", 10, 10, 10));
+var_dump(levenshtein(""));
+
+?>
+--EXPECTF--
+Warning: levenshtein(): The general Levenshtein support is not there yet in %s on line %d
+
+Warning: levenshtein(): Argument string(s) too long in %s on line %d
+
+Warning: levenshtein(): Argument string(s) too long in %s on line %d
+all passed
+
+Warning: levenshtein() expects parameter 1 to be string (Unicode or binary), array given in %s on line %d
+NULL
+int(0)
+int(0)
+
+Warning: Wrong parameter count for levenshtein() in %s on line %d
+NULL
-- 
2.40.0