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The winapp ui commands and winui-ui-testing skill let your AI agent inspect, interact with, and validate your app's UI automatically — describing what it sees in natural language so you can iterate without writing test harness code first.
UI inspection commands
The winui-ui-testing skill is included in the winui@awesome-copilot plugin. If you installed the plugin during setup, no additional install is required.
| Command | What it does |
|---|---|
winapp ui inspect |
Dumps the accessibility tree of the running app |
winapp ui screenshot |
Captures a screenshot of the app window |
winapp ui click <selector> |
Clicks a button or selects an item |
winapp ui invoke <selector> |
Invokes the default action on a control |
winapp ui search <text> |
Searches the element tree by name or AutomationId |
winapp ui set-value <selector> <value> |
Sets the value of a TextBox or ComboBox |
Ask your agent to test the app
- Run the app:
dotnet run - Ask your agent a natural-language question, such as:
"Look at the running app and tell me if the Save button is reachable when the form is empty."
- The agent uses
winapp ui inspectandwinapp ui screenshotto examine the app and respond.
This workflow lets you catch issues — missing keyboard focus, disabled controls, layout problems — before writing a single line of test code.
Write automated tests
Once you've explored the app interactively, ask your agent to generate formal tests. Use this starter prompt:
Write an xUnit UI test for my WinUI 3 app that:
1. Launches the app with dotnet run
2. Verifies the main window title is "My App"
3. Clicks the button with AutomationId "SaveButton"
4. Verifies a success message appears
Use the winapp ui commands for element interaction.
The generated tests use winapp ui commands as the interaction layer, so they run without a separate UI automation framework.
Set AutomationIds in your XAML
For winapp ui click to target elements reliably, set AutomationProperties.AutomationId in your XAML:
<Button AutomationProperties.AutomationId="SaveButton"
Content="Save" />
<TextBox AutomationProperties.AutomationId="TitleInput" />
Ask your agent: "Add AutomationId attributes to all interactive controls in this XAML."
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