more tests, 78.63% line coverage now

git-svn-id: http://svn.php.net/repository/pear/packages/Text_LanguageDetect/trunk@322353 c90b9560-bf6c-de11-be94-00142212c4b1

Author: cweiske

Text/LanguageDetect.php

@@ -1076,11 +1076,7 @@ public function languageSimilarity($lang1 = null, $lang2 = null)
             }
 
             if ($lang2 != null) {
-
-                if ($lang1 == null) {
-                    // can't only set the second param
-                    return null;
-                } elseif (!isset($this->_lang_db[$lang2])) {
+                if (!isset($this->_lang_db[$lang2])) {
                     // check if language model exists
                     return null;
                 }

tests/Text_LanguageDetectTest.php

@@ -1547,6 +1547,16 @@ function testLanguageSimilarityNameMode2()
         $this->assertTrue($eng_dan > $nor_dan); // english is less similar to danish than norwegian is
     }
 
+    function testLanguageSimilarityUnknownLanguage()
+    {
+        $this->assertNull($this->x->languageSimilarity('doesnotexist'));
+    }
+
+    function testLanguageSimilarityUnknownLanguage2()
+    {
+        $this->assertNull($this->x->languageSimilarity('english', 'doesnotexist'));
+    }
+
     function test_compatibility ()
     {
         $str = "I am the very model of a modern major general.";