Shorter message for simple assertion failures

[stefnotch]

Is your feature request related to a problem? Please describe.

I use assertEquals quite often in my tests When running from VSCode, I get this little tooltip

which can be clicked on to get the full error message

Describe the solution you'd like

I wish I didn't always have to click on the message. It'd be lovely if it would display a variation of the following for short messages

This is actually pretty straightforward to implement. It's roughly

let message;
  if (actualString.length + expectedString.length <= 32) {
    message = `${actualString} != ${expectedString}${msgSuffix}`;
  } else {
    message = `Values are not equal${msgSuffix}`;
  }

Describe alternatives you've considered

• Write my own assertEquals.

• Just accept the one extra click.

• Hook up the expected and actual values in the Deno LSP and report it to the UI that way. Part of the code for that is already in the LSP.