Directly from the WaPo news story-

Former FBI director James Comey said during his testimony before the Senate Intelligence Committee that the tweet below is what spurred him to ask a friend to give information about a meeting with the president to The New York Times.

“James Comey better hope that there are no ‘tapes’ of our conversations before he starts leaking to the press!”

– Donald J. Trump (@realDonaldTrump) May 12, 2017

Comey lied under oath today by saying Trump's tweet from May 12th is what "spurred" him to get the info to the New York Times, because the NYT's had already published the story on May 11th-
https://www.nytimes.com/2017/05/11/us/politics/trump-comey-firing.html?_r=0

Apparently the crack investigative reporters at the WaPo and the rest of the liberal media couldn't figure out that May 12th comes after May 11th. 

When can we expect the breathless news reports about Comey committing perjury,and how the rest of his testimony can't be trusted?

As if.