简单的 Powershell Pester 测试不适用于 $false

Question

我编写了一个名为 "Check-RegValueExists" 的非常简单的函数，当直接从命令提示符执行时，它的工作原理如下

Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "DevicePath"

Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "Devicexxxx"

Check-RegValueExists "HKCU:\Software\Classes\message-facebook-com" "URL Protocol"

输出如下

True
False
False

这些都是正确的结果。

我的纠缠测试是

Describe 'Check-RegValueExists Tests'{

It "has valid key with valid value" {
        'Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "DevicePath"' | Should Be $true
        } 

It "has invalid key" {
        'Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "Devicexxxx"' | Should Be $false
        } 

It "has empty value" {
        'Check-RegValueExists "HKCU:\Software\Classes\message-facebook-com" "URL Protocol"' | Should Be $false
        } 

}

但是只有 第一个测试通过，其他两个测试失败，随后

[-] has invalid key 17ms
   Expected: {False}
   But was:  {Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "Devicexxxx"}
   8:         'Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "Devicexxxx"' | Should Be $false
   at <ScriptBlock>, <No file>: line 8
 [-] has empty value 28ms
   Expected: {False}
   But was:  {Check-RegValueExists "HKCU:\Software\Classes\message-facebook-com" "URL Protocol"}
   12:         'Check-RegValueExists "HKCU:\Software\Classes\message-facebook-com" "URL Protocol"' | Should Be $false
   at <ScriptBlock>, <No file>: line 12

我什至复制并粘贴了第一个测试，只修改了字符串来确认，但仍然失败。是否存在语法错误或其他问题？

Answer 1

您的问题是因为您将命令用单引号引起来，这将它们变成了字符串。因此，您正在测试每个字符串是 $true 还是 $false 并且任何值都被视为 $true.

您需要这样做：

Describe 'Check-RegValueExists Tests'{

    It "has valid key with valid value" {
        Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "DevicePath" | Should Be $true
    } 

    It "has invalid key" {
        Check-RegValueExists "HKLM:\Software\Microsoft\Windows\CurrentVersion" "Devicexxxx" | Should Be $false
    } 

    It "has empty value" {
        Check-RegValueExists "HKCU:\Software\Classes\message-facebook-com" "URL Protocol" | Should Be $false
    } 
}

简单的 Powershell Pester 测试不适用于 $false

Simple Powershell Pester Test not working for $false

powershell

unit-testing

pester