[UITests] New framework around WinApp CLI, no WinAppDriver or Selenium. (#48467)

# Add winappcli-based UI test harness (no WinAppDriver / Selenium)

## Summary

Introduces a new UI test harness — `Microsoft.PowerToys.UITest.Next` —
that drives PowerToys
modules through Microsoft's
[winappcli](https://github.com/microsoft/WinAppCli) (UI Automation
CLI) instead of WinAppDriver + Selenium. Engine is a single executable
shelled out from
C#; no third-party NuGet packages, no driver process, no Appium server.
Adds two real consumers:
a full ColorPicker end-to-end scenario and a Settings shell navigation
smoke test.

This is opt-in and additive — the existing `UITestAutomation` library
and the
WinAppDriver-based test projects are untouched. Both can coexist while
we evaluate the new
harness.

Inspired in part by
[#48414](https://github.com/microsoft/PowerToys/pull/48414), which lands
the same architectural bet (winappcli, AutomationId selectors, no
WinAppDriver) at a smaller
scope. This PR generalizes it into a reusable library.

## Why

WinAppDriver + Selenium is a legacy pre-agentic solution that is no
longer actively maintained. It's unreliable, heavyweight, and slow. To
achieve 100% UI test coverage, we should leverage modern, reliable
solutions, and WinApp CLI is a strong candidate.

## What's in this PR

### Harness library —
[`src/common/UITestAutomation.Next/`](src/common/UITestAutomation.Next/)

| File | Purpose |
|---|---|
| [`WinappCli.cs`](src/common/UITestAutomation.Next/WinappCli.cs) |
Process wrapper around `winapp.exe`. `Invoke` / `InvokeAssertSuccess` /
`InvokeJson` / `IsAvailable` / `TryResolveExecutable`. `Result` carries
the args and emits `DescribeFailure()` like `winapp ui invoke X -w 12345
-> exit 1; stderr: ...` |
| [`Session.cs`](src/common/UITestAutomation.Next/Session.cs) | Test
session, scoped by either HWND (`-w`) or process (`-a`) via
`TargetScope`. `Find<T>` / `FindAll<T>` / `Inspect` / `Screenshot` /
`SendKeys`. `Session.FromProcess(...)` factory for the
single-window-per-process case |
|
[`SessionHelper.cs`](src/common/UITestAutomation.Next/SessionHelper.cs)
| Owns the launch + window-readiness flow. Static `EnsureRunning(scope,
timeout)` returns whether the call had to launch (so cleanup only kills
what we started). Uses `UseShellExecute=true` so child handles don't
keep MSTest hanging |
| [`UITestBase.cs`](src/common/UITestAutomation.Next/UITestBase.cs) |
MSTest base class. Pre-flights `WinappCli.IsAvailable()` once per
process and fails fast with the install hint if `winapp.exe` isn't on
PATH |
| [`Element/*.cs`](src/common/UITestAutomation.Next/Element/) |
`Element`, `Button`, `ToggleSwitch`, `TextBox`, `NavigationViewItem`,
`Window`. `Click` / `MouseClick` / `Focus` / `GetProperty` / `GetValue`
/ `HelpText` / `WaitForProperty` / `WaitForGone` plus coords
(`X`/`Y`/`Width`/`Height`) |
| [`By.cs`](src/common/UITestAutomation.Next/By.cs) | `By.Name` /
`By.AccessibilityId` / `By.Id` / `By.Slug` |
| [`Windows.cs`](src/common/UITestAutomation.Next/Windows.cs) |
`WindowsFinder.ListAll` / `ListByApp` / `WaitForWindowByApp` /
`WaitForWindowByProcess`. Notes the winappcli bug where unfiltered
`list-windows` drops untitled windows |
|
[`WindowControl.cs`](src/common/UITestAutomation.Next/WindowControl.cs)
| Tolerant Win32 helpers — `TryCloseByApp` / `TryFocusByApp` /
`SafeCloseAndFocus` / `TryKillProcess` — for `finally` blocks |
|
[`KeyboardHelper.cs`](src/common/UITestAutomation.Next/KeyboardHelper.cs)
| Hybrid `keybd_event` + `SendKeys.SendWait` chord sender — required for
global PowerToys hotkeys |
| [`MouseHelper.cs`](src/common/UITestAutomation.Next/MouseHelper.cs) |
`MoveTo` / `LeftClick` / `RightClick` / `LeftClickAt` Win32 wrappers |
|
[`ClipboardHelper.cs`](src/common/UITestAutomation.Next/ClipboardHelper.cs)
| STA-thread `Clipboard` access with `WaitForText` |
|
[`ModuleConfigData.cs`](src/common/UITestAutomation.Next/ModuleConfigData.cs)
| `PowerToysModule` enum + path/process-name resolution |

### Tests


**[`src/modules/colorPicker/ColorPicker.UITests/`](src/modules/colorPicker/ColorPicker.UITests/)**
— replaces the previous empty `UITest-ColorPicker` stub. One test,
[`ColorPickerEndToEndTests.NavigateReadShortcutActivateAndCapture`](src/modules/colorPicker/ColorPicker.UITests/ColorPickerEndToEndTests.cs),
drives the full E2E:
1. Navigate to the Color Picker page via the dashboard utilities stack
2. Toggle the module OFF, verify `PowerToys.ColorPickerUI` exits; toggle
ON, verify it respawns
3. Read the activation shortcut from the page's `ShortcutControl`
(`EditButton.HelpText`)
4. Clear clipboard, park cursor, send the chord
5. Wait for the picker overlay window
6. Read the displayed HEX from a hidden XAML automation peer (see below)
7. Left-click to capture; assert the clipboard value matches the peer's
HEX
8. Wait for the editor window and assert the captured color appears in
its tree


**[`src/settings-ui/Settings.UITests/`](src/settings-ui/Settings.UITests/)**
— `SettingsNavigationSmokeTests.NavigationItem_NavigatesWithoutCrashing`
is one `[TestMethod]` parameterized with `[DynamicData]`, producing 31
discrete results — one per `NavigationViewItem` in
[`ShellPage.xaml`](src/settings-ui/Settings.UI/SettingsXAML/Views/ShellPage.xaml).
For each item: navigate, settle 250ms, assert `PowerToys.Settings` is
still alive. Catches FailFast regressions in
`ShellViewModel.Frame_NavigationFailed` that pure-logic unit tests can't
reach (the failure path needs a `NavigationFailedEventArgs` which is a
sealed WinRT projection).

### Product change


**[`src/modules/colorPicker/ColorPickerUI/Views/MainView.xaml`](src/modules/colorPicker/ColorPickerUI/Views/MainView.xaml)**
— adds a hidden `TextBlock` automation peer:

```xml
<TextBlock
    x:Name="ColorHexAutomationPeer"
    AutomationProperties.AutomationId="ColorHexAutomationPeer"
    IsHitTestVisible="False"
    Opacity="0"
    Text="{Binding ColorText}" />
```

The visible `ColorTextBlock` has `AutomationProperties.Name="{Binding
ColorName}"`, which masks the HEX value in the UIA tree (you see "White"
instead of `#FFFFFF`). This zero-impact peer mirrors `ColorText` so
tests can read the actually-displayed HEX. `Opacity=0` +
`IsHitTestVisible=False` keep it out of the visual layout and out of
accessibility focus.

### Project wiring

- [`PowerToys.slnx`](PowerToys.slnx) — registers `UITestAutomation.Next`
under `/common/`, `ColorPicker.UITests` under
`/modules/colorpicker/Tests/`, and `Settings.UITests` under
`/settings-ui/Tests/`. Original `UITest-ColorPicker` stub csproj
removed.
-
[`.github/actions/spell-check/expect.txt`](.github/actions/spell-check/expect.txt)
— adds `winapp` / `winappcli`.

### Not in this PR

- No pipeline changes. `winapp.exe` is expected to be pre-staged on the
test agent image. If it's missing, `UITestBase` fails the first test
with the install hint (`winget install Microsoft.winappcli`) rather than
producing 30 opaque per-test errors.
- No changes to the legacy `UITestAutomation` library or any of the
existing `*.UITests` projects.

## Validation

- All three projects build clean on `x64|Debug` (empty
`build.<config>.<plat>.errors.log`):
  - `src/common/UITestAutomation.Next/`
  - `src/modules/colorPicker/ColorPicker.UITests/`
  - `src/settings-ui/Settings.UITests/`
- Both tests run in Test Explorer / `dotnet test` via
Microsoft.Testing.Platform (already enabled repo-wide in
`Directory.Build.props`).
- Local runs: ColorPicker E2E green; Settings smoke green across all 31
nav items.
- `winapp 0.3.2` from `winget install Microsoft.winappcli`.

## Notes for reviewers

- **`UseShellExecute = true`** in `SessionHelper.EnsureRunning` is
intentional — `false` makes child processes inherit the test host's
stdin/stdout/stderr handles, which keeps MTP/Test Explorer marking the
run as "in progress" until the spawned PowerToys exits.
- **Process-scope (`-a`) targeting** in the Settings smoke test handles
single-instance handoff: the EXE you launch may exit with code 0
immediately after signalling an existing owner, so the alive check uses
`Process.GetProcessesByName` rather than the launcher PID.
- **AutomationId-only selectors** in the Settings smoke list keep the
test localization-independent. Parent groups have
`SelectsOnInvoked="False"` and only expand on click — `Element.Click`
tries `InvokePattern → TogglePattern → SelectionItemPattern →
ExpandCollapsePattern` so the same call works for both leaves and
groups.
- **Untitled-window discovery**: filtered `winapp ui list-windows -a
<name>` returns windows that the unfiltered call drops (e.g. ColorPicker
editor). `WindowsFinder.ListByApp` uses the filtered form. Reported
upstream.

## Before Merge

- Add the `winappcli` install step to the UI-test pipeline.
This commit is contained in:
Gleb Khmyznikov
2026-07-07 22:58:08 -07:00
committed by GitHub
parent f5c6f50e30
commit 74e6c3ad79
57 changed files with 5837 additions and 75 deletions

View File

@@ -0,0 +1,71 @@
[CmdletBinding()]
Param(
# Target architecture: 'x64' or 'arm64'. Defaults to the pipeline's BuildPlatform variable.
[string]$Platform = $env:BuildPlatform
)
$ProgressPreference = 'SilentlyContinue'
$ErrorActionPreference = 'Stop'
# Pinned to the winappcli version the UITestAutomation.Next harness is validated against. Using
# the standalone CLI zip (rather than the MSIX / winget) keeps this working on agents that lack
# the App Installer and avoids MSIX registration entirely.
$Version = 'v0.3.2'
$NormalizedPlatform = if ([string]::IsNullOrWhiteSpace($Platform)) { 'x64' } else { $Platform.ToLowerInvariant() }
switch ($NormalizedPlatform)
{
'arm64'
{
$Asset = 'winappcli-arm64.zip'
$ExpectedHash = 'dfe9d6eb70618665e4adcee989be8ecd076bfd387714a35a5b38597196fed093'
}
default
{
$Asset = 'winappcli-x64.zip'
$ExpectedHash = '231373a4605ce7749172a70534ebab9305f91116e7f68d25cc73051372a6c579'
}
}
$DownloadUrl = "https://github.com/microsoft/winappCli/releases/download/$Version/$Asset"
$ZipPath = Join-Path $env:Temp $Asset
$InstallDir = Join-Path $env:Temp 'winappcli'
Write-Host "Downloading winappcli $Version ($Asset) from $DownloadUrl"
Invoke-WebRequest -Uri $DownloadUrl -OutFile $ZipPath
# Verify the download against the published SHA256 before trusting it.
$Hash = (Get-FileHash -Algorithm SHA256 $ZipPath).Hash
if ($Hash -ne $ExpectedHash)
{
throw "$Asset has unexpected SHA256 hash: $Hash (expected $ExpectedHash)"
}
# Fresh extract each run so a stale copy can't shadow the pinned version.
if (Test-Path $InstallDir)
{
Remove-Item $InstallDir -Recurse -Force
}
Expand-Archive -Path $ZipPath -DestinationPath $InstallDir -Force
# Clear Mark-of-the-Web in case the agent applied it, so the CLI runs non-interactively.
Get-ChildItem -Path $InstallDir -Recurse | Unblock-File -ErrorAction SilentlyContinue
$winapp = Get-ChildItem -Path $InstallDir -Recurse -Filter 'winapp.exe' | Select-Object -First 1 -ExpandProperty FullName
if (-not $winapp)
{
throw "winapp.exe was not found after extracting $Asset to $InstallDir."
}
Write-Host "winappcli installed at: $winapp"
# The harness (WinappCli.TryResolveExecutable) checks WINAPP_CLI_PATH first; also prepend the
# folder to PATH so any other consumer in later steps resolves winapp.exe too.
Write-Host "##vso[task.setvariable variable=WINAPP_CLI_PATH]$winapp"
Write-Host "##vso[task.prependpath]$(Split-Path -Parent $winapp)"
& $winapp --version
if ($LASTEXITCODE -ne 0)
{
throw "winapp.exe failed to run ('--version' exited with $LASTEXITCODE)."
}

View File

@@ -171,6 +171,11 @@ jobs:
fetchTags: false
fetchDepth: 1
# Checkout to surface a missing import before full build.
- pwsh: |-
& '.pipelines/verifyCommonProps.ps1' -sourceDir '$(build.sourcesdirectory)\src'
displayName: Audit shared common props for CSharp projects in src sub-folder
- ${{ if eq(parameters.enableMsBuildCaching, true) }}:
- pwsh: |-
$MSBuildCacheParameters = ""
@@ -464,11 +469,6 @@ jobs:
flattenFolders: True
OverWrite: True
# Check if all projects (located in src sub-folder) import common props
- pwsh: |-
& '.pipelines/verifyCommonProps.ps1' -sourceDir '$(build.sourcesdirectory)\src'
displayName: Audit shared common props for CSharp projects in src sub-folder
# Check if deps.json files don't reference different dll versions.
- pwsh: |-
& '.pipelines/verifyDepsJsonLibraryVersions.ps1' -targetDir '$(build.sourcesdirectory)\$(BuildPlatform)\$(BuildConfiguration)'

View File

@@ -106,12 +106,19 @@ jobs:
- template: steps-ensure-dotnet-version.yml
parameters:
sdk: true
version: '9.0'
version: '10.0'
- pwsh: |-
& '$(build.sourcesdirectory)\.pipelines\InstallWinAppDriver.ps1'
displayName: Download and install WinAppDriver
# winappcli (winapp.exe) powers the Microsoft.PowerToys.UITest.Next harness and isn't baked
# into the agent image yet. winget / App Installer isn't available on these agents, so download
# the pinned standalone CLI from its GitHub release. Drop this step once the CLI is pre-staged.
- pwsh: |-
& '$(build.sourcesdirectory)\.pipelines\InstallWinAppCli.ps1' -Platform '$(BuildPlatform)'
displayName: Download and install winappcli (winapp.exe)
- ${{ if ne(parameters.buildSource, 'buildNow') }}:
- task: DownloadPipelineArtifact@2
inputs:
@@ -149,7 +156,124 @@ jobs:
inputs:
displaySettings: 'optimal'
- script: |
dotnet test $(Build.SourcesDirectory)\src\modules\fancyzones\FancyZones.UITests\FancyZones.UITests.csproj --no-build -c $(BuildConfiguration) -p:Platform=$(BuildPlatform)
dotnet test $(Build.SourcesDirectory)\src\modules\fancyzones\FancyZonesEditor.UITests\FancyZonesEditor.UITests.csproj --no-build -c $(BuildConfiguration) -p:Platform=$(BuildPlatform)
# Start WinAppDriver once for the whole job — WinAppDriver's documented CI pattern
# (https://github.com/microsoft/WinAppDriver/blob/master/Docs/CI_AzureDevOps.md). Launching it
# detached gives it its own console whose stdin blocks, so it stays alive for the run instead of
# reading EOF and exiting the moment it starts listening (the failure mode when a test host launches
# it as a child). The legacy UITest harness reuses an already-listening instance rather than
# relaunching it per test, so this removes the per-assembly launch cost. The winappcli-based .Next
# tests don't use WinAppDriver. Best-effort: if the pre-start fails, each assembly still launches its own.
- pwsh: |
$winapp = "C:\Program Files (x86)\Windows Application Driver\WinAppDriver.exe"
if (Test-Path $winapp) {
Start-Process -FilePath $winapp
$deadline = (Get-Date).AddSeconds(30)
$ready = $false
while (-not $ready -and (Get-Date) -lt $deadline) {
try {
$client = [System.Net.Sockets.TcpClient]::new()
$client.Connect('127.0.0.1', 4723)
$ready = $client.Connected
$client.Close()
} catch {
Start-Sleep -Milliseconds 500
}
}
if ($ready) {
Write-Host 'WinAppDriver is listening on 127.0.0.1:4723.'
} else {
Write-Host "##vso[task.logissue type=warning]WinAppDriver did not start listening on :4723 within 30s; tests will launch it themselves."
}
} else {
Write-Host "##vso[task.logissue type=warning]WinAppDriver not found at $winapp; tests will launch it themselves."
}
displayName: Start WinAppDriver (shared, persistent)
- pwsh: |
$ErrorActionPreference = 'Stop'
$artifactRoot = "$(Pipeline.Workspace)\$(TestArtifactsName)"
if (-not (Test-Path $artifactRoot)) {
Write-Host "##vso[task.logissue type=error]UI test artifact not found: $artifactRoot"
exit 1
}
# uiTestModules is a template parameter; flatten it to a delimited string for the script.
$modulesRaw = '${{ join(';', parameters.uiTestModules) }}'
$modules = @()
if (-not [string]::IsNullOrWhiteSpace($modulesRaw)) {
$modules = $modulesRaw -split ';' | ForEach-Object { $_.Trim() } | Where-Object { $_ }
}
# Each UI test project is a Microsoft.Testing.Platform app; its entry assembly is paired
# with a *.runtimeconfig.json. Recurse under the staged 'tests' folders (tolerates TFM/RID subfolders).
$entries = Get-ChildItem -Path $artifactRoot -Filter '*.runtimeconfig.json' -File -Recurse -ErrorAction SilentlyContinue |
Where-Object { $_.Name -like '*UITests*' -and $_.FullName -match '\\tests\\' }
if ($modules.Count -gt 0) {
$entries = $entries | Where-Object { $n = $_.Name; ($modules | Where-Object { $n -like "*$_*" }).Count -gt 0 }
}
# Run each test assembly once (a project reference can copy a runner into a sibling's output).
$entries = $entries | Sort-Object FullName | Group-Object Name | ForEach-Object { $_.Group[0] }
if (-not $entries) {
Write-Host "##vso[task.logissue type=error]No UI test runners matched (modules: '$modulesRaw') under $artifactRoot"
exit 1
}
$resultsDir = "$(Common.TestResultsDirectory)"
New-Item -ItemType Directory -Path $resultsDir -Force | Out-Null
$failed = 0
foreach ($rc in ($entries | Sort-Object FullName -Unique)) {
$base = $rc.Name -replace '\.runtimeconfig\.json$', ''
$dir = $rc.DirectoryName
$exe = Join-Path $dir "$base.exe"
$dll = Join-Path $dir "$base.dll"
Write-Host "##[group]Run UI tests: $base"
Push-Location $dir
try {
if (Test-Path $exe) {
& $exe --report-trx --results-directory $resultsDir
} elseif (Test-Path $dll) {
& dotnet $dll --report-trx --results-directory $resultsDir
} else {
Write-Warning "No runner (exe/dll) found for $base in $dir"
}
if ($LASTEXITCODE -ne 0) {
Write-Warning "UI tests reported failures for $base (exit $LASTEXITCODE)"
$failed++
}
} finally {
Pop-Location
Write-Host "##[endgroup]"
}
}
if ($failed -gt 0) {
Write-Host "##vso[task.logissue type=error]$failed UI test project(s) reported failures."
exit 1
}
displayName: "Run UI Tests"
# Expose 'platform' as an environment variable so the harness's EnvironmentConfig.IsInPipeline
# is true and it captures failure media (screenshots / recording / logs). The legacy VSTest task
# set `env: { platform: $(TestPlatform) }`; the MTP migration to this pwsh step dropped it.
env:
platform: $(TestPlatform)
- task: PublishTestResults@2
displayName: "Publish UI Test Results"
condition: always()
inputs:
testResultsFormat: VSTest
testResultsFiles: '$(Common.TestResultsDirectory)/**/*.trx'
mergeTestResults: true
failTaskOnFailedTests: false
# Stop the shared WinAppDriver (paired with the start step above) so it doesn't linger on the
# self-hosted agent between jobs. Best-effort and always runs.
- pwsh: |
Get-Process -Name 'WinAppDriver' -ErrorAction SilentlyContinue | Stop-Process -Force -ErrorAction SilentlyContinue
displayName: Stop WinAppDriver
condition: always()