/**
* @expectedException RuntimeException
*/
public function testWalkFailsForInvalidCallback()
{
$xao = new XArray([1, 2]);
// ArrayObject::count() is non-static and accepts no parameters
// though the syntax for the callable is correct the execution will fail
$xao->map(['ArrayObject', 'count']);
}
public function testGetPreviousObject()
{
$xao = new XArray([1, 2, 3]);
$obj = $xao->map(function ($value) {
return 2 * $value;
});
$this->assertSame($xao, $obj->back());
}
public function testFilterAcceptsCallback()
{
$array = [1, 2, 3];
$xao = new XArray($array);
$test = new CallbackTestMethods();
$obj = $xao->map([$test, 'filter']);
$this->assertEquals($array, (array) $obj);
}
/**
* @depends testMapAcceptsFunction
*/
public function testMapPreserveKeys()
{
$array = ['x' => 28, 'y' => 68, 'z' => 4];
$xao = new XArray($array);
$this->assertEquals($array, (array) $xao->map('test_map', true));
}
