public function testaddSpacer() { $robots = new Robots(); $lines = count(preg_split('/' . PHP_EOL . '/', $robots->generate())); $this->assertEquals(1, $lines); // Starts off with at least one line. $robots->addSpacer(); $robots->addSpacer(); $lines = count(preg_split('/' . PHP_EOL . '/', $robots->generate())); $this->assertEquals(2, $lines); }