Improve error messages when calling au_GetLatest

[DennisGaida]

Consider the following global:au_GetLatest:

function global:au_GetLatest {
     $download_url_response32 = Invoke-WebRequest -Uri "nonexisting"
     $download_url_response64 = Invoke-WebRequest -Uri "nonexisting"
     return @{ Version = $version; URL32 = $download_url_response32; URL64 =  $download_url_response64}
}

When executing this within the update-process (update_all.ps1 / test_all.ps1) the exception for the nonexisting URL is not shown, secondly the error reported by validation is simply "URL syntax is invalid: (7,55s)". I don't know what URL is meant.

Whilst the error message is factually correct, I really didn't know why I was getting the error (see my commit correcting the error here: DennisGaida/chocolatey-packages@3e3334a). I would love if AU did parameter validation before actually doing anything and when doing that, also tell me what parameter is wrong.

[majkinetor]

This should work like so unless you changed ErrorAction. Throwing inside au_GetLatest shouldn't bring URL syntax is invalid. What happens when you run update.ps1 ?

[DennisGaida]

Good idea. It behaves differently when using update.ps1 and I can see the exception, that helps (as I know where the exception is coming from, I still don't know what URL is wrong):

λ  .\update.ps1
microsoft-edge - checking updates using AU version 2019.5.22

URL check
URL syntax is invalid:
At C:\Program Files\WindowsPowerShell\Modules\AU\2019.5.22\Public\Update-Package.ps1:110 char:67
+ ... heck_url $url -Options $Latest.Options) { throw "${res}:$url" } else  ...
+                                               ~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : OperationStopped: (URL syntax is invalid::String) [], RuntimeException
    + FullyQualifiedErrorId : URL syntax is invalid:

And update_all.ps1

λ  .\update_all.ps1
Updating 1 automatic packages at 2020-01-27 18:25:20
Push is disabled
NoCheckChocoVersion is disabled
   [1/1] microsoft-edge ERROR:
     URL syntax is invalid: (7,60s)

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