Test-All, Test-Any

Test_All_Any.ps1

function Test-All
{
    [CmdletBinding()]
    param(
        [scriptblock]
        $Predicate,
        [Parameter(ValueFromPipeline)]
        [PSObject]
        $InputObject
    )
    begin
    {
        $all = $true
    }
    process
    {
        if ($all -and -not (& $Predicate $InputObject))
        {
            $all = $false
        }
    }
    end
    {
        $all
    }
}

function Test-Any
{
    [CmdletBinding()]
    param(
        [scriptblock]
        $Predicate,
        [Parameter(ValueFromPipeline)]
        [PSObject]
        $InputObject
    )
    begin
    {
        $any = $false
    }
    process
    {
        if (-not $any -and (& $Predicate $InputObject))
        {
            $any = $true
        }
    }
    end
    {
        $any
    }
}


@(1, 1, 1) | Test-All { $_ -eq 1 } # True
@(1, 2, 3) | Test-All { $_ -eq 1 } # False
@() | Test-All { $_ -eq 1 } # True

@(1, 1, 1) | Test-Any { $_ -eq 1 } # True
@(1, 2, 3) | Test-Any { $_ -eq 1 } # True
@() | Test-Any { $_ -eq 1 } # False