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[Fix] shallow: ensure SCU is called after GDSFP returns null #1981

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merged 4 commits into from
Mar 12, 2019
Merged

[Fix] shallow: ensure SCU is called after GDSFP returns null #1981

merged 4 commits into from
Mar 12, 2019

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chenesan
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@chenesan chenesan commented Jan 18, 2019 •
edited by ljharb
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Prevent forgetting PR for #1970 😓 . I've added test case in this PR(should fail now).
Wait for release of facebook/react#14613 and we can update react-test-renderer in dependency.

Fixes #1970.

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ljharb commented Jan 19, 2019

Thanks! Can we add the same test case for mount as well?

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chenesan commented Feb 7, 2019

@ljharb react 16.8 is out. I have tried manually upgrade react-test-renderer to 16.8 in enzyme-react-adapter-16 and the tests passed :-) but I don't know how to handle the react-test-renderer dependency in enzyme.

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ljharb commented Feb 7, 2019

@chenesan i'm not sure what you mean; it should be auto installed

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ljharb commented Feb 7, 2019

The error showing up in the tests is specific to React 16.3. It seems like this might be fixable in the 16.3 adapter?

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chenesan commented Feb 7, 2019 •
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@ljharb I think it's not fixable in 16.3 because it's fixed in react-test-renderer@16.8. I'll add an additional itIf(is('>= 16.8')) for the test.

I don't know how to handle the react-test-renderer dependency in enzyme.

At that time I noticed the react-test-renderer was still 16.7.0 after I run npm run react 16. After rm -rf node_modules and rerun npm install && npm run react 16 it's auto updated to 16.8.1 so it's fine now. Sorry for confusion.

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chenesan commented Feb 8, 2019

@ljharb I saw that the build failed in React=16.0 and node=4 after my push. I looked into the log and it failed in before_install step. I'm certain that there's no dependency change in this PR so I'm wondering why that happened.

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ljharb commented Feb 8, 2019

@chenesan i'd prefer if we could add whatever changes are necessary to fix it in 16.3, with react-test-renderer 16.3. We've done similar fixes before.

As for the correct version of react-test-renderer, that's something I might have to fix - testing should be done with react-test-renderer at the same minor version as react itself.

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chenesan commented Feb 9, 2019

@ljharb Ok, I'll try to fix this in adapter 16.3. However, since the lifecycle logic is running in the react shallow renderer, I think it would be hard or not possible to fix this (maybe I'm wrong).

We've done similar fixes before.

Could you guide me where the related issues / fixes are? Maybe I can get some ideas from this. Thanks :-)

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ljharb commented Feb 9, 2019

Mainly, we can spy on component methods, so that we should be able to determine when individual lifecycle methods occur.

@chenesan chenesan force-pushed the test-gDSFP-before-sCP branch 2 times, most recently from 552714e to 9e2b05e Compare February 28, 2019 10:06
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@ljharb I think this could be reviewed now :). I tried to wrap sCU and set instance state as correct old state so this.state won't be the state updated after gDSFP in shallow renderer (which should be set after sCU).

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ljharb commented Mar 11, 2019

I've updated/rebased this; but it seems like facebook/react@4f33288 doesn't actually fix the bug in react-test-renderer 16.8+ - once I made it so that the fix only applied to 16.3 - 16.7, the 16.8 tests failed locally :-/ altho everything seems to pass in CI, so I'm a bit confused.

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Hmm interesting :( I'd try to take a look in this week.

@ljharb ljharb changed the title [TEST] add test case for state diffing in SCU after GDSFP [Fix] shallow: ensure SCU is called after GDSFP returns null Mar 12, 2019
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ljharb commented Mar 12, 2019 •
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k, figured it out. The bug is dependent on react-test-renderer version; so i had to fix the logic to pivot based on that.

@ljharb ljharb merged commit 98154a9 into enzymejs:master Mar 12, 2019
@ljharb ljharb mentioned this pull request Mar 12, 2019
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ljharb added a commit that referenced this pull request Mar 13, 2019
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[enzyme-adapter-react-16.3] v1.6.2
ad1a3db 
 - [fix] add `hasShouldComponentUpdateBug` to gDSFP lifecycles option (#1981))
 - [refactor] use `displayNameOfNode` instead of `function.prototype.name` directly
 - [meta] add "directory" field to package.json
 - [deps] update `react-is`, `enzyme-adapter-utils`, `prop-types`
ljharb added a commit that referenced this pull request Mar 13, 2019
@ljharb
[enzyme-adapter-react-16] v1.11.0
534839f 
 - [new] Wrap renders in `TestUtils.act` (#2034)
 - [fix] `shallow`: Mock sCU if gDSFP defined in shallow renderer rerender (#1981)
 - [fix] add `hasShouldComponentUpdateBug` to gDSFP lifecycles option (#1981)
 - [deps] update `react-is`, `enzyme-adapter-utils`, `prop-types`
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