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Angular TestBed memory leak #24048

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Angular TestBed memory leak#24048
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P3An issue that is relevant to core functions, but does not impede progress. Important, but not urgentarea: testingIssues related to Angular testing features, such as TestBedfreq2: mediummemory leakIssue related to a memory leaktype: bug/fix
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Backlog
@GoGoris

Description

@GoGoris
GoGoris
opened on May 22, 2018

I'm submitting a...


[ ] Regression (a behavior that used to work and stopped working in a new release)
[ ] Bug report  
[x] Performance issue
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question
[ ] Other... Please describe:

Current behavior

When running Angular tests with Jest, the javascript heap keeps growing with each test untill the tests finish or an out of memory exception is thrown. The growing heap seems to be caused by the Angular TestBed, is it possible that this is the cause for the growing heapsize?

Expected behavior

The javascript heap size stays more or less constant for the whole test suite.
No out of memory exceptions are thrown.

Minimal reproduction of the problem with instructions

See the following bug report: jestjs/jest#6147

Environment


Angular version: 6.0.1


Browser:
- [ ] Chrome (desktop) version XX
- [ ] Chrome (Android) version XX
- [ ] Chrome (iOS) version XX
- [ ] Firefox version XX
- [ ] Safari (desktop) version XX
- [ ] Safari (iOS) version XX
- [ ] IE version XX
- [ ] Edge version XX
 
For Tooling issues:
- Node version: 8.11.1  
- Platform: Windows 

Others:

Jest 22.4.4 & 23.0.1

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    P3An issue that is relevant to core functions, but does not impede progress. Important, but not urgentarea: testingIssues related to Angular testing features, such as TestBedfreq2: mediummemory leakIssue related to a memory leaktype: bug/fix

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