Test-Error.ps1
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<#
.SYNOPSIS Recurses an error record or exception object and returns true/false if a match is found. .DESCRIPTION Loops through information caught in catch blocks; from an ErrorRecord (and its InvocationInfo), to Exception, and InnerException. These are then compared to a specific type, or, a hash table with a set of desired properties and settings. .PARAMETER ErrorRecord An error record or exception. By default the last error is used. .PARAMETER Type A type to compare against. If any item in the expanded ErrorRecord entry matches this typethen a $true result is returned. .PARAMETER Property A hash table with a series of Name/Value property pairs. If all of these exist on any object in the expanded ErrorRecord entry then a $true result is returned. .OUTPUTS $true or $false. .EXAMPLE Test-Error Microsoft.SqlServer.Management.Sdk.Sfc.InvalidVersionEnumeratorException Tests whether the ErrorRecord, Exception, InnerException, and so forth are this specific type of Exception. When providing this do not put it into string quotes. .EXAMPLE Test-Error @{ Number = 954; Class = 14; State = 1; } Tests whether the ErrorRecord, Exception, InnerException, and so forth have an item with all 3 properties which match these conditions. #> function Test-Error { [CmdletBinding(DefaultParameterSetName = "Type")] [OutputType("System.Boolean")] param ( [Parameter(ValueFromPipeline = $true, ParameterSetName = "Type")] [Parameter(ValueFromPipeline = $true, ParameterSetName = "TypeName")] [Parameter(ValueFromPipeline = $true, ParameterSetName = "Property")] $ErrorRecord = $null, [Parameter(Mandatory = $true, Position = 1, ParameterSetName = "Type")] [type] $Type, [Parameter(Mandatory = $true, Position = 1, ParameterSetName = "TypeName")] [string] $TypeName, [Parameter(Mandatory = $true, Position = 1, ParameterSetName = "Property")] [hashtable] $Property ) if (!$ErrorRecord) { $ErrorRecord = (Get-Variable -Name Error -Scope 2).Value | Select-Object -First 1 } $expandedErrorRecord = Resolve-Error $ErrorRecord switch ($PSCmdlet.ParameterSetName) { "Type" { if ($expandedErrorRecord | Where-Object { $_ -is $Type }) { return $true } break } "TypeName" { if ($expandedErrorRecord | Where-Object { @($_.GetType(), $_.GetType().FullName) -contains $TypeName }) { return $true } break } "Property" { foreach ($record in $expandedErrorRecord) { $match = $true foreach ($thisProperty in $Property.GetEnumerator()) { if (!$record.psobject.Properties[$thisProperty.Key] -or !$record.$($thisProperty.Key) -or $record.$($thisProperty.Key).ToString() -ne $thisProperty.Value) { $match = $false break } } if ($match) { return $true } } break } } return $false } |