WinUI Runtime Tests

Runtime tests validate Uno Platform behavior against native WinUI by building, installing, and executing automated tests against the WinAppSDK SamplesApp on Windows. This process directly compares functionality to identify and address discrepancies early.

MSIX packaging is required for WinUI runtime tests because it compiles the WinAppSDK SamplesApp into an installable format for Windows. The process handles certificate generation and trust automatically to enable local deployment and testing.

Running WinAppSDK runtime tests on Windows requires MSBuild and PowerShell. These tools are necessary to compile the SamplesApp into an MSIX package, manage certificate trust, and execute the automated test scripts against the installed application.

Parity validation works by executing automated runtime tests against the native WinUI WinAppSDK SamplesApp and comparing the results with Uno Platform. This identifies behavioral discrepancies and catches potential regressions before a new feature release.

Yes, PowerShell scripts can automate MSIX installation for WinAppSDK testing. The runtime tests handle building the SamplesApp, generating the required certificate, establishing trust, and installing the MSIX package automatically.

You should run WinUI runtime tests to check for regressions before releasing a new Uno Platform feature. This ensures the new feature behaves identically to its native WinUI counterpart by validating parity against the reference implementation.