public function testRevoke() { $this->assertTrue($this->auth->isAssigned('author B', 'author')); $auth = $this->auth->getAssignment('author B', 'author'); $this->assertTrue($auth instanceof Assignment); $this->assertTrue($this->auth->revoke('author B', 'author')); $this->assertFalse($this->auth->isAssigned('author B', 'author')); $this->assertFalse($this->auth->revoke('author B', 'author')); }