Question

我有一个返回配置文件内容的函数：

function Get-VA.Settings {
<#
.SYNOPSIS
Fetches settings from a XML file
.DESCRIPTION
Fetches settings from a XML file and outputs a XML Object
.EXAMPLE
Get-VA.Settings -path <path-to-config-file> -Rollback <path-to-rollback-file>
#>
  Param (
    [Parameter(Mandatory=$true,Position=0)]
    [string]$path,
    [Parameter(Mandatory=$true,Position=1)]
    [string]$Rollback
  )
  try {
    [xml]$config = Get-Content -Path $path
    Write-Output -InputObject $config
  } catch {
    Write-VA.EventLog -Message ("Could not load Configuration File: `r`n" + $Error) -Id 11 -type Error
    Invoke-VA.Rollback -Path $($Rollback)
  }
}

现在我在Pester中进行了测试，只是检查功能是否实际返回了一些内容：

Import-Module ($PSScriptRoot + "\utility.psm1")
Describe "Settings Module" {
  InModuleScope utility {
    Context "Get-VA.Settings" {
      It "should have Help and Examples" {
        $helpinfo = Get-Help Get-VA.Settings
        $helpinfo.examples | should not BeNullOrEmpty # should have examples
        $helpinfo.details | should not BeNullOrEmpty # should have Details
        $helpinfo.description | Should not BeNullOrEmpty # Should have a Description for the Function
      }

      It "should fail safely on read Error" {
        Mock Get-Content {throw}
        Mock Write-VA.EventLog { }
        Mock Invoke-VA.Rollback { }
        Get-VA.Settings -path "1" -Rollback "1"
        Assert-MockCalled Invoke-VA.Rollback -Times 1
      }

      It "should return a value" {
        Set-Content -Value "<xml><foo>bar</foo></xml>" -Path "settings-test.ps1" 
        Get-VA.Settings -path .\settings-test.ps1 -Rollback "1" | should not BeNullOrEmpty
        Remove-Item "settings-test.ps1"
      }
    }
  }
}

现在，无论我输出配置设置，我都无法通过Pester测试，即使该功能正常运行也很难。

[ - ]应返回值18ms
预期：价值不空 Get-ConfigSettings -path。\ settings-test.ps1 -Rollback＆＃34; 1＆＃34; |不应该是BeNullOrEmpty

我在这里遗漏了什么吗？如何正确处理功能输出？

Answer 1

Get-Help Context

在Context范围的末尾删除了在Context中定义的任何Mocks，

由于It "should fail safely on read Error"（1）和It "should return a value"（2）属于同一个Context块，（1）中定义的Mock Get-Content {throw}仍然在（2）中有效，所以Get-VA.Settings不会调用Get-Content cmdlet，而是调用mock。

对自己的函数进行输出测试

1 个答案: