What is the test for equitable tolling of a habeas petition?

The one year statute of limitations for filing a habeas petition may be equitably tolled if extraordinary circumstances beyond a prisoner's control prevent the prisoner from filing on time. See Holland v. Florida, 560 U.S. 631, 645 (2010). A petitioner seeking equitable tolling must establish two elements: "(1) that he has been pursuing his rights diligently, and (2) that some extraordinary circumstance stood in his way." Pace v. DiGuglielmo, 544 U.S. 408, 418 (2005).