version 5.1 fails in MTA mode

[iricigor]

If PowerShell v.5.1 is running in MTA mode, code will fail on

Set-Clipboard -Value ($allText, $null)[$allText.Length -eq 0]

Error is:

Set-Clipboard : Current thread must be set to single thread apartment (STA) mode before OLE calls can be made

Steps to reproduce

Start PowerShell in MTA mode

powershell.exe -MTA

Start tests

Invoke-Pester

Expected results: Tests are successful

Actual results: Tests fail with error specified above.

Possible resolution

Check for STA/MTA before checking the version. Then execute 5.1 code only if running in STA mode.

Something like:

if (test-WindowsPowerShell) { # *Windows PowerShell*
    Add-Type -AssemblyName System.Windows.Forms
    $STAMode = [threading.thread]::CurrentThread.ApartmentState.ToString() -eq 'STA'
    if (($PSVersionTable.PSVersion -ge [version] '5.1.0') -and $STAMode) { # Ps*Win* v5.1+ now has Get-Clipboard / Set-Clipboard cmdlets.
...

The same should be done in both Get and Set commandlet. Still tests with the empty string will fail. But that is another issue.

[mklement0]

Thanks, @iricigor: good catch.

I've just published v0.1.2, which should fix the problem.

Incidentally, there was another bug, albeit a benign one: Set-Clipboard and Get-Clipboard were introduced in v5.0, not v5.1.

Still tests with the empty string will fail. But that is another issue.

I assume you mean the warning that is issued to alert users that in MTA mode you cannot copy an empty string to the clipboard for technical reasons. That's a documented limitation.