RemovedMbstringModifiers: add unit test for non-lowercase function calls by jrfnl · Pull Request #877 · PHPCompatibility/PHPCompatibility
The sniff already handles this correctly, but it was not explicitly tested and if the call to `strtolower()` would be removed, the unit tests would still pass, while they shouldn't.
wimg approved these changes Aug 26, 2019
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