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fix(jest-matcher-utils): compare value of inherited getter on test failure (#10167) #14007

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merged 3 commits into from Mar 20, 2023

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BenceSzalai
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@BenceSzalai BenceSzalai commented Mar 14, 2023

Summary

Inherited getters were not enumerated by deepCyclicCopyObject causing getters not being replaced with value and the test code to call those getters later on the copied object. If the non-replaced getter depended on other non-copied value, e.g. a private class field the calling code could end up in error while trying to show comparison of the expected and received value on test failures.
Fixes #10167

See more detailed analysis under the issue: #10167 (comment)

Test plan

Added a new test case 'copies value of inherited getters' which is failing without the fix but passes after.

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thanks, this LGTM 👍

could you fix the linting error?

@BenceSzalai
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Sorry, missed that one. Hope it'll pass this time.

@SimenB SimenB merged commit 04f11d8 into jestjs:main Mar 20, 2023
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SimenB commented Jul 4, 2023

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toEqual throws a TypeError when using getter to private field of class
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