Changes in PHPUnit 13.1

All notable changes of the PHPUnit 13.1 release series are documented in this file using the Keep a CHANGELOG principles.

13.1.0 - 2026-04-03

#6501: Include unexpected output in Open Test Reporting (OTR) XML logfile
#6517: includeInCodeCoverage attribute for <directory> and <file> children of <source>
#6523: Include #[Group] information in Open Test Reporting (OTR) XML logfile
#6524: Report issues in Open Test Reporting (OTR) XML logfile
#6526: Introduce #[DataProviderClosure] for static closures
Support for configuring HTML code coverage report options (colors, thresholds, custom CSS) in XML configuration file without requiring an outputDirectory attribute, allowing the output directory to be specified later with the --coverage-html CLI option
#6530: Support for custom issue trigger resolvers that can be configured using <issueTriggerResolvers> in the XML configuration file
Support for configuring dark mode colors, progress bar colors, and breadcrumb colors for HTML code coverage reports in the XML configuration file

Improved failure message for mock object expectations
The HTML code coverage report now uses a more colorblind-friendly blue/amber/orange palette by default
Extracted PHPUnit\Runner\Extension\Facade from a concrete class to an interface and introduced an internal ExtensionFacade implementation, so that extensions only depend on the Facade interface while PHPUnit internally uses the ExtensionFacade class that also provides query methods