Powershell Pester单元测试无法模拟扩展存档

我遇到了一个问题，我试图在pester单元测试中模拟Windows内置cmdlet

Expand Archive

。不知何故，在执行过程中会执行原始cmdlet，而不是模拟的变体。我曾尝试将

扩展归档

模拟放在

描述

范围之外，但没有成功

以下是我想测试的模块：

class Validator {
    
    [bool] Validate([string] $filePath) {
        return $False
    }

}

class DocxValidator : Validator {

    [bool] Validate([string] $filePath) {
        try { 
            $tempFile = [System.IO.Path]::GetTempFileName() + ".zip"
            Copy-Item $filePath -Destination $tempFile
            $tempDirectory = ([System.IO.Path]::GetTempPath()).ToString() + "validator"
            Expand-Archive -LiteralPath $tempFile -DestinationPath $tempDirectory -Force
            Remove-Item -Path $tempDirectory -Recurse -Force
            return $true   
        }
        catch {
            Write-Host "Failed to validate file $($filePath)" 
        }

        return $false
    }
} 

function Get-Validator {
    [OutputType([Validator])]
    param([string] $ValidatorType)
    switch ($ValidatorType) {
        "xml" {  
            return [XmlValidator]::new()
        }
        "json" {
            return [JsonValidator]::new()
        }
        "docx" {
            return [DocxValidator]::new()
        }
        Default {
            throw "invalid validator type"
        }
    }
}

Export-ModuleMember -Function Get-Validator

这是单元测试：

    Get-Module Validation-Helper | Remove-Module -Force
$modulePath = Resolve-Path -Path "$($PSScriptRoot)\..\Validation-Helper\Validation-Helper.psm1"
Import-Module $modulePath

InModuleScope Validation-Helper {

    Describe 'Validator for docx' {
        Context 'when the document is valid' {
            # arrange
            BeforeAll {
                Mock Write-Host { }
                Mock Copy-Item { }
                # this was another hint, to explicitly add the module scope here
                Mock -ModuleName Validation-Helper Expand-Archive { } -Verifiable -ParameterFilter {
                }
            }
            
            $tempFile = [System.IO.Path]::GetTempFileName()
            $docxValidator = Get-Validator -ValidatorType "docx"
            
            # act | assert 
            It 'returns true' {
                $docxValidator.Validate($tempFile) | Should Be $true
            }
        }
    }
}

我在Validate（）方法的catch分支中得到的异常：

背景：

---

我目前正在开发Powershell模块，该模块将验证Word文档docx是否已损坏。其思想是，每个docx文档基本上都是一个zip文件。因此，应该可以使用任何提取方法来提取它-如果提取过程中没有发生错误，则文件正常。

尝试从

的
Mock
中删除
-ParameterFilter{}
部分。我怀疑，如果使用cmdlet时没有任何参数，而您使用cmdlet时有参数，那么它只能调用Mock。不，不幸的是，这并不能解决问题。我仍然有相同的异常。请尝试从
展开存档
的
模拟
中删除
-ParameterFilter{}
部分。我怀疑，如果使用cmdlet时没有任何参数，而您使用cmdlet时有参数，那么它只能调用Mock。不，不幸的是，这并不能解决问题。我仍然有同样的例外。
System.Management.Automation.MethodInvocationException: Exception calling ".ctor" with "3" argument(s): "Central Directory corrupt." ---> System.IO.InvalidDataException: Central Directory corrupt. ---> System.IO.IOException: An attempt was made to move the file pointer before the beginning of the file.

   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.SeekCore(Int64 offset, SeekOrigin origin)
   at System.IO.FileStream.Seek(Int64 offset, SeekOrigin origin)
   at System.IO.Compression.ZipArchive.ReadEndOfCentralDirectory()
   --- End of inner exception stack trace ---
   at System.IO.Compression.ZipArchive.ReadEndOfCentralDirectory()
   at System.IO.Compression.ZipArchive.Init(Stream stream, ZipArchiveMode mode, Boolean leaveOpen)
   at System.IO.Compression.ZipArchive..ctor(Stream stream, ZipArchiveMode mode, Boolean leaveOpen)
   --- End of inner exception stack trace ---
   at System.Management.Automation.DotNetAdapter.AuxiliaryConstructorInvoke(MethodInformation methodInformation, Object[] arguments, Object[] originalArguments)
   at System.Management.Automation.DotNetAdapter.ConstructorInvokeDotNet(Type type, ConstructorInfo[] constructors, Object[] arguments)
   at Microsoft.PowerShell.Commands.NewObjectCommand.CallConstructor(Type type, ConstructorInfo[] constructors, Object[] args)