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Add the parameter Register-ArgumentCompleter -NativeFallback to support registering a cover-all completer for native commands (#25230)

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This commit is contained in:
Dongbo Wang
2025-08-29 15:50:02 -07:00
committed by GitHub
parent 8d524adf7f
commit 53805fb426
5 changed files with 134 additions and 34 deletions
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test/powershell/Host/TabCompletion/TabCompletion.Tests.ps1
+51 -1
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@@ -1929,8 +1929,12 @@ param([ValidatePattern(
Context NativeCommand {
BeforeAll {
$nativeCommand = (Get-Command -CommandType Application -TotalCount 1).Name
## Find a native command that is not 'pwsh'. We will use 'pwsh' for fallback completer tests later.
$nativeCommand = Get-Command -CommandType Application -TotalCount 2 |
Where-Object Name -NotLike pwsh* |
Select-Object -First 1
}
It 'Completes native commands with -' {
Register-ArgumentCompleter -Native -CommandName $nativeCommand -ScriptBlock {
param($wordToComplete, $ast, $cursorColumn)
@@ -1994,6 +1998,52 @@ param([ValidatePattern(
$res.CompletionMatches | Should -HaveCount 1
$res.CompletionMatches.CompletionText | Should -BeExactly "-option"
}
It 'Covers an arbitrary unbound native command with -t' {
## Register a completer for $nativeCommand.
Register-ArgumentCompleter -Native -CommandName $nativeCommand -ScriptBlock {
param($wordToComplete, $ast, $cursorColumn)
if ($wordToComplete -eq '-t') {
return "-terminal"
}
}
## Register a fallback native command completer.
Register-ArgumentCompleter -NativeFallback -ScriptBlock {
param($wordToComplete, $ast, $cursorColumn)
if ($wordToComplete -eq '-t') {
return "-testing"
}
}
## The specific completer will be used if it exists.
$line = "$nativeCommand -t"
$res = TabExpansion2 -inputScript $line -cursorColumn $line.Length
$res.CompletionMatches | Should -HaveCount 1
$res.CompletionMatches.CompletionText | Should -BeExactly "-terminal"
## Otherwise, the fallback completer will kick in.
$line = "pwsh -t"
$res = TabExpansion2 -inputScript $line -cursorColumn $line.Length
$res.CompletionMatches | Should -HaveCount 1
$res.CompletionMatches.CompletionText | Should -BeExactly "-testing"
## Remove the completer for $nativeCommand.
Register-ArgumentCompleter -Native -CommandName $nativeCommand -ScriptBlock $null
## The fallback completer will be used for $nativeCommand.
$line = "$nativeCommand -t"
$res = TabExpansion2 -inputScript $line -cursorColumn $line.Length
$res.CompletionMatches | Should -HaveCount 1
$res.CompletionMatches.CompletionText | Should -BeExactly "-testing"
## Remove the fallback completer for $nativeCommand.
Register-ArgumentCompleter -NativeFallback -ScriptBlock $null
## The fallback completer will be used for $nativeCommand.
$res = TabExpansion2 -inputScript $line -cursorColumn $line.Length
$res.CompletionMatches | Should -HaveCount 0
}
}
It 'Should complete "Export-Counter -FileFormat" with available output formats' -Pending {