public function testPopReturnsAndRemovesTheMostRecentlyPushedContext()
{
$context = new Context();
$context->push('foo');
$context->push('bar');
$this->assertEquals('bar', $context->pop());
$this->assertEquals('foo', $context->pop());
// TODO: remove once global state is fully deprecated (2.0)
_elgg_services()->setValue('context', new Context());
elgg_push_context('foo');
elgg_push_context('bar');
$this->assertEquals('bar', elgg_pop_context());
$this->assertEquals('foo', elgg_pop_context());
}