Update failing snapshots [HOW TO]

[albert-olive]

Hi, I don't find any documentation so that's why I'm asking this question:

How do I update failing snapshots? I see that message but I don't know were to press u.

› 2 snapshot tests failed in 1 test suite. Inspect your code changes or press u to update them.

Thanks

[orta]

There is a dropdown to update snapshots in the editor when that text is detected.

[seanpoulter]

Could you submit a PR with the docs you'd like to see @albert-olive?

[JasonSooter]

@seanpoulter I'd gladly submit the PR with the docs if @orta can direct me to the dropdown. I don't see a dropdown anywhere and it doesn't update on save of the test or file that caused the need for snapshot update.

[orta]

There is/used to be a notification that asks if you want to replace them in the editor

[JasonSooter]

I see it occasionally but not necessarily when I need it to. I can comment out an expect. Save. Uncomment the expect and it will then prompt me. But is there a way to update without depending on the prompt?

[adambraimbridge]

I'm also experiencing this absence of the "dropdown to update snapshots in the editor".

I used to see it, but now it no longer displays. Is this a known issue?

Above: I get "New snapshot is ready to write", but no means within VSCode of writing it.

[randycoulman]

This seems to have been fixed in #356, but there hasn't been a release with that fix in it yet.

[Eidher]

On release 2.9.2 there's an option to Restart Jest On Snapshot Update, this worked for me.

Here's an extended explanation:
#215

[viceice]

Snapshot update should use onlyChanged flag, this will only run required test.

otherwise it will run all tests, which could need a huge amount of time

[Bnaya]

I'm also sometimes gets:

Without the "update snapshot" prompt.

[betadayz]

how do i update my snapshot?

[yepitschunked]

@orta

There is a dropdown to update snapshots in the editor when that text is detected.

It looks like that's implemented by the regex here:

vscode-jest/src/JestExt/process-listeners.ts

Line 141 in 4f7359a

const SnapshotFailRegex = /(snapshots? failed)|(snapshot test failed)/i;

However, the text it's looking for seems to only get printed in certain cases, based on some random criteria in jest (e.g this issue suggests you have to run >20 tests: jestjs/jest#3322)

So I think all the people complaining in this thread about no update snapshot prompt are running into the issue where jest is not printing that summary out.