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fix: support .toHaveProperty('') #12251

merged 4 commits into from Jan 28, 2022


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@chentsulin chentsulin commented Jan 17, 2022


When I try using .toHaveProperty() with an empty string:

expect({ '': 1 }).toHaveProperty('', 1);

It gets the following error:

    expect(received).toHaveProperty(path, value)

    Expected path: ""

    Expected value: 1
    Received value: {"": 1}

I believe it's a bug.

Test plan

Added a failed test.

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chentsulin commented Jan 17, 2022

This regression was introduced by v27.4.0. I can confirm it works in v27.3.0

@chentsulin chentsulin force-pushed the toHaveProperty-empty-string-key branch from 7c7012a to 9317925 Compare Jan 23, 2022
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chentsulin commented Jan 23, 2022

Added a quick fix for the regression. @SimenB

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codecov-commenter commented Jan 23, 2022

Codecov Report

Merging #12251 (78beae9) into main (5d483ce) will increase coverage by 0.00%.
The diff coverage is 100.00%.

Impacted file tree graph

@@           Coverage Diff           @@
##             main   #12251   +/-   ##
  Coverage   67.51%   67.51%           
  Files         328      328           
  Lines       17246    17249    +3     
  Branches     5071     5072    +1     
+ Hits        11643    11646    +3     
  Misses       5570     5570           
  Partials       33       33           
Impacted Files Coverage Δ
packages/expect/src/utils.ts 96.09% <100.00%> (+0.05%) ⬆️

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@chentsulin chentsulin force-pushed the toHaveProperty-empty-string-key branch from 9317925 to 399e472 Compare Jan 23, 2022
SimenB approved these changes Jan 28, 2022
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@SimenB SimenB left a comment

awesome, thanks!

@SimenB SimenB changed the title chore: add a failed test for .toHaveProperty('') fix: support .toHaveProperty('') Jan 28, 2022
@SimenB SimenB merged commit d1bc333 into facebook:main Jan 28, 2022
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@chentsulin chentsulin deleted the toHaveProperty-empty-string-key branch Feb 6, 2022
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4 participants