Files
PowerShell-PowerShell/test/powershell
Dan Thompson ce3cb68551 Make Select-Object/ForEach-Object/Where-Object see dynamic properties (#6898)
Dynamic (DLR) objects work in some places today, but not others.  This change expands that support to ForEach-Object, Where-Object and the family of cmdlets that use 'MshExpression' (Select-Object, etc.).

This change addresses both wildcard and non-wildcard cases. In wildcard cases, it uses the existing support of generating PSDynamicMember objects for names returned by GetDynamicMemberNames.

In non-wildcard cases, a dynamic property access is attempted whether or not the name shows up in GetDynamicMemberNames, but a truly "blind" access is only attempted if we see that the base object is an IDMOP. If the dynamic access fails, you'll get the same or a similar error experience as before ("The property 'Blarg' cannot be found", or no error at all, depending on the cmdlet and the strict mode setting).

The included test coverage includes a stub for the.ForEach operator--once people are happy with this change, I can continue by adding support there.

This change should allegedly also have positive perf impact, though in actual perf testing, although it does seem ever-so-slightly faster, I found it difficult to measure much difference at all.
2018-06-12 23:48:34 -07:00
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Pester Testing Test Guide

Also see the Writing Pester Tests document.

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Testing new powershell processes

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Example:

    $powershell = Join-Path -Path $PsHome -ChildPath "pwsh"
    & $powershell -noprofile -command "ExampleCommand" | Should Be "ExampleOutput"

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It "Should do something on Windows" -Skip:($IsLinux -Or $IsMacOS) { ... }

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It "Should do something on Linux" -Skip:$IsWindows { ... }

Pending

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