fix: using null in comparator function (#53)

Author: joshbmarshall

src/Granada/Orm/Wrapper.php

@@ -433,11 +433,11 @@ private function _handleWhereMethod($method, $parameters)
                     $parameters[0] = $this->adjustTimezoneForWhere($varname, $parameters[0]);
                 }
 
-                if (isset($parameters[0])) {
+                if (count($parameters)) {
                     return call_user_func([$this, $target_method], $column_name, $parameters[0]);
                 }
 
-                    return call_user_func([$this, $target_method], $column_name);
+                return call_user_func([$this, $target_method], $column_name);
             }
         }
 

tests/granada/GranadaNewTest.php

@@ -527,6 +527,24 @@ public function testVarnameOrderByNaturalDesc()
         $this->assertSame('SELECT * FROM `part` ORDER BY LENGTH(`name`), `name` DESC', ORM::get_last_query());
     }
 
+    public function testVarnameNotEqual()
+    {
+        Part::where_name_not_equal(5)->find_many();
+        $this->assertSame("SELECT * FROM `part` WHERE `part`.`name` != '5'", ORM::get_last_query());
+    }
+
+    public function testVarnameNotNull()
+    {
+        Part::where_name_not_null()->find_many();
+        $this->assertSame('SELECT * FROM `part` WHERE `part`.`name` IS NOT NULL', ORM::get_last_query());
+    }
+
+    public function testVarnameNotEqualNull()
+    {
+        Part::where_name_not_equal(null)->find_many();
+        $this->assertSame('SELECT * FROM `part` WHERE `part`.`name` IS NOT NULL', ORM::get_last_query());
+    }
+
     public function testVarnameLtOrNULL()
     {
         Part::where_name_lt_or_null(5)->find_many();