Functions/Assertions/BeOfType.ps1
function PesterBeOfType($ActualValue, $ExpectedType, [switch] $Negate, [string]$Because) { if($ExpectedType -is [string]) { # parses type that is provided as a string in brackets (such as [int]) $parsedType = ($ExpectedType -replace '^\[(.*)\]$','$1') -as [Type] if ($null -eq $parsedType) { throw [ArgumentException]"Could not find type [$ParsedType]. Make sure that the assembly that contains that type is loaded." } $ExpectedType = $parsedType } $succeded = $ActualValue -is $ExpectedType if ($Negate) { $succeded = -not $succeded } $failureMessage = '' if ($null -ne $ActualValue) { $actualType = $ActualValue.GetType() } else { $actualType = $null } if (-not $succeded) { if ($Negate) { $failureMessage = "Expected the value to not have type $(Format-Nicely $ExpectedType) or any of its subtypes,$(Format-Because $Because) but got $(Format-Nicely $ActualValue) with type $(Format-Nicely $actualType)." } else { $failureMessage = "Expected the value to have type $(Format-Nicely $ExpectedType) or any of its subtypes,$(Format-Because $Because) but got $(Format-Nicely $ActualValue) with type $(Format-Nicely $actualType)." } } return New-Object psobject -Property @{ Succeeded = $succeded FailureMessage = $failureMessage } } Add-AssertionOperator -Name BeOfType ` -Test $function:PesterBeOfType ` -Alias 'HaveType' function PesterBeOfTypeFailureMessage() {} function NotPesterBeOfTypeFailureMessage() {} # 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