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UselessCallOnNotNull: fix false positive for unresolved types #4880

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merged 1 commit into from Jun 1, 2022
Merged

UselessCallOnNotNull: fix false positive for unresolved types #4880

merged 1 commit into from Jun 1, 2022

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dzirbel
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@dzirbel dzirbel commented May 31, 2022

Fix an issue where UselessCallOnNotNull would report issues when some of the argument types resolved as ErrorType. While it correctly handles cases where the BindingContext cannot resolve a type (the first test case), in cases where a call is made on an unknown type (the second test case, e.g. via takeIf{}) the BindingContext will report it as an ErrorType. Since ErrorType.isNullable() apparently returns false we need to make an exception to ensure the rule behaves as expected.

@github-actions github-actions bot added the rules label May 31, 2022
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codecov bot commented May 31, 2022

Codecov Report

Merging #4880 (7626f69) into main (b2ef7a6) will increase coverage by 0.00%.
The diff coverage is 80.00%.

@@            Coverage Diff            @@
##               main    #4880   +/-   ##
=========================================
  Coverage     84.81%   84.82%           
- Complexity     3463     3467    +4     
=========================================
  Files           493      493           
  Lines         11355    11359    +4     
  Branches       2090     2092    +2     
=========================================
+ Hits           9631     9635    +4     
- Misses          674      675    +1     
+ Partials       1050     1049    -1     
Impacted Files Coverage Δ
...urbosch/detekt/rules/style/UselessCallOnNotNull.kt 91.66% <80.00%> (+2.53%) ⬆️
...etekt/generator/printer/defaultconfig/Exclusion.kt 93.93% <0.00%> (-2.84%) ⬇️

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Fix an issue where UselessCallOnNotNull would report issues when some of the argument types resolved as ErrorType. While it correctly handles cases where the BindingContext cannot resolve a type (the first test case), in cases where a call is made on an unknown type (the second test case, e.g. via takeIf{}) the BindingContext will report it as an ErrorType. Since ErrorType.isNullable() apparently returns false we need to make an exception to ensure the rule behaves as expected.
@cortinico cortinico added this to the 1.21.0 milestone Jun 1, 2022
@schalkms schalkms merged commit db0b4b5 into detekt:main Jun 1, 2022
@dzirbel dzirbel deleted the listOfNotNullUnknownType branch June 1, 2022 18:09
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4 participants