I've seen no evidence presented in the hearings that Donald didn't desire this, and lots that he did.
If Donald wants to testify differently, he's free to do so. Until then, though, the evidence showing otherwise is pretty substantial.
And given his somewhat casual relationship with the truth, even if he did testify he'd need to bring a lot of documentation to back up his claims.
There's no question he asked the Ukrainian government to investigate Crowd Strike and that other company ..
the mere act of asking is neither the issue nor an impeachable offense.
The dems stated that Donald Trump leveraged his position of the presidency and withheld aid in order to achieve personal ends against a political candidate (who is not a political opponent until or unless he wins the democratic primary and has NO connection to crowd strike)
None of which, after all this, we have any proof of...
The best the dems have is that some guy, the EU ambassador at that not even the Ukrainian ambassador, ASSUMED that Trump was refusing a phone call and a meeting with the Ukrainian President UNTIL he got a public announcement by the President of the Ukraine that he would investigate Crowd Strike and one more company - one company of which led to an inappropriate and Illegal FISA warrant against a presidential candidate AFTER he won the Republican Primary.
Information in which the American people would benefit knowing if there was Ukrainian based corruption was behind - information that could arguably have gone in favor of Crowd Strike and the Obama administration as a whole.
However, this assumption of the EU ambassador was nothing more than his own assumption, one in which could have been cleared up by a simple phone call to the President and a direct question or two..
But in the end, we see no withheld phone call and no withheld meeting. and no statement by the President that he wanted anything in return.
So in the end the dems are left holding an empty bag of feelings over all important facts - and feelings and assumptions without basis in reality are not impeachable offenses. It's just one more failed attempt to overturn the 2016 elections..