Adding test case from 'mradosta'.

Fixing issue with non-zero indexed arrays and Set::extract()
Fixes #6

Author: markstory

cake/libs/set.php

@@ -386,7 +386,10 @@ function extract($path, $data = null, $options = array()) {
 		$contexts = $data;
 		$options = array_merge(array('flatten' => true), $options);
 		if (!isset($contexts[0])) {
-			$contexts = array($data);
+			$current = current($data);
+			if ((is_array($current) && count($data) <= 1) || !is_array($current)) {
+				$contexts = array($data);
+			}
 		}
 		$tokens = array_slice(preg_split('/(?<!=)\/(?![a-z-]*\])/', $path), 1);
 

cake/tests/cases/libs/set.test.php

@@ -535,6 +535,30 @@ function testExtract() {
 		$r = Set::extract('/User/@*', $tricky);
 		$this->assertEqual($r, $expected);
 
+		$nonZero = array(
+			1 => array(
+				'User' => array(
+					'id' => 1,
+					'name' => 'John',
+				)
+			),
+			2 => array(
+				'User' => array(
+					'id' => 2,
+					'name' => 'Bob',
+				)
+			),
+			3 => array(
+				'User' => array(
+					'id' => 3,
+					'name' => 'Tony',
+				)
+			)
+		);
+		$expected = array(1, 2, 3);
+		$r = Set::extract('/User/id', $nonZero);
+		$this->assertEqual($r, $expected);
+
 		$common = array(
 			array(
 				'Article' => array(
@@ -969,7 +993,6 @@ function testExtract() {
 		$expected = array(array('name' => 'zipfile.zip','type' => 'application/zip','tmp_name' => '/tmp/php178.tmp','error' => 0,'size' => '564647'));
 		$r = Set::extract('/file/.[type=application/zip]', $f);
 		$this->assertEqual($r, $expected);
-
 	}
 /**
  * testMatches method
@@ -2396,7 +2419,7 @@ function testXmlSetReverse() {
 			array(
 				'Item' => array(
 					'title' => 'An example of a correctly reversed XMLNode',
-					'Desc' => array(),
+					'desc' => array(),
 				)
 			)
 		);