Credential and NetworkCredential should not accept by-value pipeline input

Description

When testing my code, and mocking Get-EC2Volume using Pester I expect to be able to supply an input pipeline for Get-EC2Volume.

Get-EC2Volume accepts by-value pipeline input for InstanceId, Credential, and NetworkCredential.

Pipeline input for InstanceId is somewhat expected. By-Value pipeline input for credential parameters is not.

PowerShell will attempt to bind all parameters accepting by-value input which causes a parameter binding failure.

Reproduction Steps

Set-Content 'module.tests.ps1' -Value @'
Describe 'Some tests' {
    BeforeAll {
        Mock Get-EC2Instance {
            [PSCustomObject]@{
                Instances = @(
                    [PSCustomObject]@{
                        BlockDeviceMappings = @(
                            [PSCustomObject]@{
                                DeviceName = '/dev/sda1'
                                Ebs        = [PSCustomObject]@{
                                    VolumeId = 'vol-11111111'
                                }
                            }
                            [PSCustomObject]@{
                                DeviceName = '/dev/sdf'
                                Ebs        = [PSCustomObject]@{
                                    VolumeId = 'vol-22222222'
                                }
                            }
                        )
                    }
                )
            }
        }

        Mock Get-EC2Volume {
            [PSCustomObject]@{
                VolumeId = 'vol-22222222'
                Tags     = @()
            }
        }
    }

    It 'Should execute on a pipeline without failing' {
        Invoke-Something

        Should -Invoke Get-EC2Volume
    }
}
'@

Set-Content 'module.psm1' -Value @'
function Invoke-Something {
    (Get-EC2Instance -InstanceId $instanceId).Instances.BlockDeviceMappings.Ebs |
        Get-EC2Volume
}
'@

Import-Module .\module.psm1 -Force

$configuration = @{
    Run = @{
        Path = '.\module.tests.ps1'
    }
    Output = @{
        Verbosity = 'Detailed'
    }
}
Invoke-Pester -Configuration $configuration

The snippet above raises an error as the command attempts to bind the input pipeline to credential parameters.

Starting discovery in 1 files.
Discovering in C:\Development\cp-powershell-imagehelper\module.tests.ps1.
Found 1 tests. 26ms
Discovery finished in 33ms.

Running tests from 'C:\Development\cp-powershell-imagehelper\module.tests.ps1'
Describing Some tests
PesterMock_f491b2df-48aa-450b-b9e6-f45bfd19fc8c: C:\Development\cp-powershell-imagehelper\module.psm1:3
Line |
   3 |          Get-EC2Volume
     |          ~~~~~~~~~~~~~
     | Cannot process argument transformation on parameter 'NetworkCredential'. userName

PesterMock_f491b2df-48aa-450b-b9e6-f45bfd19fc8c: C:\Development\cp-powershell-imagehelper\module.psm1:3
Line |
   3 |          Get-EC2Volume
     |          ~~~~~~~~~~~~~
     | Cannot process argument transformation on parameter 'NetworkCredential'. userName

  [-] Should execute on a pipeline without failing 118ms (117ms|2ms)
   Expected Get-EC2Volume to be called at least 1 times but was called 0 times
   at Should -Invoke Get-EC2Volume, C:\Development\cp-powershell-imagehelper\module.tests.ps1:37
   at <ScriptBlock>, C:\Development\cp-powershell-imagehelper\module.tests.ps1:37
Tests completed in 251ms
Tests Passed: 0, Failed: 1, Skipped: 0 NotRun: 0

Environment

Build Version: 4.0.6
OS Info: Windows 10
Build Environment: N/A
Targeted .NET Platform: N/A

Resolution

Remove ValueFromPipeline from Credential parameters.

This is a :bug: bug-report

aws / aws-tools-for-powershell