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Fix handling of NaN/Infinity in mock timer delay, #5960 #5966

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merged 6 commits into from
Apr 12, 2018
Merged

Fix handling of NaN/Infinity in mock timer delay, #5960 #5966

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bbd0d4a
add handling for NaN as timer delay
eritikass Apr 11, 2018
6d70f85
use Number.isNaN for isNaN checking
eritikass Apr 11, 2018
3ef95bb
handle Infinity values in timers delays correctly
eritikass Apr 11, 2018
62809a2
Fix handling of NaN/Infinity in mock timer delay
eritikass Apr 11, 2018
14881d7
use more universal delay validation
eritikass Apr 11, 2018
4ec5400
Merge branch 'master' into fake-timers-fix
cpojer Apr 12, 2018
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2 changes: 2 additions & 0 deletions CHANGELOG.md
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Expand Up @@ -87,6 +87,8 @@
([#5914](https://github.com/facebook/jest/pull/5914))
* `[jest-regex-util]` Fix handling regex symbols in tests path on Windows
([#5941](https://github.com/facebook/jest/pull/5941))
* `[jest-util]` Fix handling for NaN as timer delay
([#5966](https://github.com/facebook/jest/pull/5966))

### Chore & Maintenance

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2 changes: 1 addition & 1 deletion packages/jest-util/src/__tests__/fake_timers.test.js
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Expand Up @@ -317,7 +317,7 @@ describe('FakeTimers', () => {
const mock4 = jest.fn(() => runOrder.push('mock4'));

global.setTimeout(mock1, 100);
global.setTimeout(mock2, 0);
global.setTimeout(mock2, NaN);
global.setTimeout(mock3, 0);
const intervalHandler = global.setInterval(() => {
mock4();
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2 changes: 1 addition & 1 deletion packages/jest-util/src/fake_timers.js
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Expand Up @@ -486,7 +486,7 @@ export default class FakeTimers<TimerRef> {
return null;
}

if (delay == null) {
if (delay == null || isNaN(delay)) {
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mind using Number.isNaN instead?

See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN

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tnx, updated in 6d70f85

delay = 0;
}

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