SplatTesting.ps1

function test {
    param (
        $Parameter1,
        $Parameter2
    )
    $PSBoundParameters
}
$spalt = @{}
test @spalt

$Parameter1 = "value"
Test @Parameter1

$Parameter1 = "value"
$Parameter2 = "value2"
Test @Parameter1 @Parameter2

$splat = @{
    Parameter1 = "value1"
    Parameter2 = "value2"
}
Test @splat

$splat = @{
    Parameter1 = $DeoesntExist
    Parameter2 = "value2"
}
Test @splat

$splat = @{
    Parameter2 = "value2"
}
Test @splat @DoesntExist

$splat = @{
    Parameter2 = "value2"
}
$EmptyHash = @{}
Test @splat @EmptyHash