Fix failing tests.

I have no idea why the updated session test was expected to fail as the
data was written to the session.

Refs #3551

lib/Cake/Test/Case/Controller/Component/SessionComponentTest.php

@@ -205,7 +205,7 @@ public function testSessionReadWrite() {
 		$this->assertEquals($Session->read('Test'), $array);
 		$Session->delete('Test');
 
-		$this->assertFalse($Session->write(array('Test'), 'some value'));
+		$this->assertTrue($Session->write(array('Test'), 'some value'));
 		$this->assertTrue($Session->write(array('Test' => 'some value')));
 		$this->assertEquals('some value', $Session->read('Test'));
 		$Session->delete('Test');

lib/Cake/Test/Case/Utility/HashTest.php

@@ -175,6 +175,9 @@ public function testGet() {
 		$result = Hash::get($data, '0');
 		$this->assertEquals('abc', $result);
 
+		$result = Hash::get($data, 0);
+		$this->assertEquals('abc', $result);
+
 		$result = Hash::get($data, '1');
 		$this->assertEquals('def', $result);
 

lib/Cake/Utility/Hash.php

@@ -42,7 +42,7 @@ public static function get(array $data, $path) {
 		if (empty($data)) {
 			return null;
 		}
-		if (is_string($path)) {
+		if (is_string($path) || is_numeric($path)) {
 			$parts = explode('.', $path);
 		} else {
 			$parts = $path;