Powershell 有没有一种方法可以使用Pester测试/断言写主机的输出？

我正在为一个相当复杂的脚本编写测试，脚本中有一个特定的函数，它将向用户输出不同系列的日志消息。我想断言是否正在显示特定的日志消息

主要问题是，我不知道哪个参数隐式处理传递给

Write-Host

cmdlet的文本

下面是一些代码，它捕获了我要做的事情的前提

测试功能 纠缠试验 输出

描述TestFunction
[-]如果1或3超过19ms，则应使用适当的消息调用写入主机
在，：第235行
235:Assert MockCalled Write Host-justice 1-Scope It-ParameterFilter{“TestInput包含1”}
应准确调用写入主机1次，但被调用2次
测试在106ms内完成
测试通过：0、失败：1、跳过：0、挂起：0、不确定：0

查看cmdlet后，我发现有一个

-Object

参数。这将接受要写入控制台的通用对象数组。

-Object

参数是需要在Pester测试的

-ParameterFilter

中指定的参数，以便断言正在显示适当的文本

我的更新代码如下

测试功能 纠缠试验 输出

---

-乘以2-准确地说

，也是出于某种奇怪的原因-作用域只有当

它

区分大小写时，它才对我正确工作，否则

它也在计算来自其他It块的结果
function TestFunction($TestInput) {
    if ($TestInput -contains 1) {
        Write-Host "TestInput contains a 1"
    }

    if ($TestInput -contains 3 ) {
        Write-Host "TestInput contains a 3"
    }

    if ($TestInput -contains 4 ) {
        Write-Host "TestInput contains a 4"
    }
}

Describe "TestFunction" {
    It "should call Write-Host with appropriate message if 1 or 3 is passed" {
        Mock Write-Host {}
        TestFunction -TestInput @(1, 2, 3)
        Assert-MockCalled Write-Host -Exactly 2 -Scope It
        Assert-MockCalled Write-Host -Exactly 1 -Scope It -ParameterFilter { "TestInput contains a 1" }
        Assert-MockCalled Write-Host -Exactly 1 -Scope It -ParameterFilter { "TestInput contains a 3" }
    }
}

  Describing TestFunction
    [-] should call Write-Host with appropriate message if 1 or 3 is passed 19ms
      at <ScriptBlock>, : line 235
      235:         Assert-MockCalled Write-Host -Exactly 1 -Scope It -ParameterFilter { "TestInput contains a 1" }
      Expected Write-Host to be called 1 times exactly but was called 2 times
Tests completed in 106ms
Tests Passed: 0, Failed: 1, Skipped: 0, Pending: 0, Inconclusive: 0 

function TestFunction($TestInput) {
    if ($TestInput -contains 1) {
        Write-Host "TestInput contains a 1"
    }

    if ($TestInput -contains 3 ) {
        Write-Host "TestInput contains a 3"
    }

    if ($TestInput -contains 4 ) {
        Write-Host "TestInput contains a 4"
    }
}

Describe "TestFunction" {
    It "should call Write-Host with appropriate message if 1 or 3 is passed" {
        Mock Write-Host {}
        TestFunction -TestInput @(1, 2, 3)
        Assert-MockCalled Write-Host -Exactly 2 -Scope It
        Assert-MockCalled Write-Host -Exactly 1 -Scope It -ParameterFilter { $Object -eq "TestInput contains a 1" }
        Assert-MockCalled Write-Host -Exactly 1 -Scope It -ParameterFilter { $Object -eq "TestInput contains a 3" }
    }
}

  Describing TestFunction
    [+] should call Write-Host with appropriate message if 1 or 3 is passed 20ms
Tests completed in 99ms
Tests Passed: 1, Failed: 0, Skipped: 0, Pending: 0, Inconclusive: 0