public function testLastIndexOf()
{
$this->assertSame(3, $this->seq->lastIndexOf(0));
$this->assertSame(1, $this->seq->lastIndexOf($this->a));
$this->assertSame(2, $this->seq->lastIndexOf($this->b));
$this->assertSame(-1, $this->seq->lastIndexOf(1));
}
