Component is not updated after simulating error

[aliaksandr-yermalayeu]

Describe the bug
Component is not rendered correctly after error simulation

Possibly related issues: #1757, #1283

To Reproduce
I created minimal repo with contained issue. Clone it, run npm i, then run tests with npm test command. One snapshot will fail.

Expected behavior
Error message should be rendered instead of normal content. It works fine with shallow and fails with mount

Desktop:

• OS: win7
• Version 3.6.0

[ljharb]

enzyme has no snapshot support; the closest would be .debug().

Can you update your test cases to assert that either Component or Error have a length of 1, as you'd expect?

[asapach]

@ljharb, could you please explain why it works with shallow() and doesn't work with mount()?

[aliaksandr-yermalayeu]

enzyme has no snapshot support; the closest would be .debug().

There was no difference after I replaced snapshots with .debug(), except formatting.

Can you update your test cases to assert that either Component or Error have a length of 1, as you'd expect?

No problem. I updated repo, removed all unnecessary tests, added one similar test with pure error for comparison.

[ljharb]

@asapach mount uses react itself to render; shallow uses react-test-renderer. It's possible/likely that there's bugs in react-test-renderer, or in enzyme's use of it.

[jgzuke]

It looks like this is being caused by simulateError not calling update on the wrapper. The reason this is working for shallow is that when you .find on a shallow node update gets called internally`.

@aliaksandr-yermalayeu for now you can add a container.update() call to your test after calling simulateError

[aliaksandr-yermalayeu]

@jgzuke I suspected something like that. Thank you for the clarification.

[ljharb]

Reopening until #1812 lands.