public function testCanExtendViews()
{
$this->views->extendView('foo', 'bar');
// Unextending valid extension succeeds.
$this->assertTrue($this->views->unextendView('foo', 'bar'));
// Unextending non-existent extension "fails."
$this->assertFalse($this->views->unextendView('foo', 'bar'));
}