public function testRemoveFlash() {
$this->session
->setFlash('notice', 'foo');
$this->session
->setFlash('error', 'bar');
$this
->assertTrue($this->session
->hasFlash('notice'));
$this->session
->removeFlash('error');
$this
->assertTrue($this->session
->hasFlash('notice'));
$this
->assertFalse($this->session
->hasFlash('error'));
}