Pester и тестирование

Describe "Get-Total" { Context "empty input" { It "returns zero" { Get-Total @() | Should -Be 0 } } }

Describe X { BeforeEach{$script:n=0};It A{$script:n|Should -Be 0};It B{$script:n|Should -Be 0} }

$result = & { Describe X { BeforeAll{$r=[IO.MemoryStream]::new()};AfterAll{$r.Dispose()} } }
$shape = if($null -eq $result){'<null>'}elseif($result -is [array]){'array'}else{$result.GetType().Name}
[pscustomobject]@{ Shape=$shape; Values=@($result) }

InModuleScope Demo { Mock Invoke-RestMethod { @{ok=$true} }; It "uses API" { Invoke-Demo | Should -BeTrue } }

Should -Invoke Invoke-RestMethod -Times 1 -ParameterFilter {$Method -eq "Get" -and $Uri.Host -eq "api.example"}

Mock Get-Service { [pscustomobject]@{Name="Demo";Status=[ServiceProcess.ServiceControllerStatus]::Running} }

It "writes report" { $p=Join-Path $TestDrive "out.json";Export-Report $p;Test-Path $p|Should -BeTrue }

$result = Invoke-Job -OutputPath (Join-Path $TestDrive "job")
$resultType = if($null -eq $result){'<null>'}else{$result.GetType().FullName}
[pscustomobject]@{ Result=$result; Type=$resultType; Count=@($result).Count }

$result = Get-ChildItem TestDrive:\
$resultType = if($null -eq $result){'<null>'}else{$result.GetType().FullName}
[pscustomobject]@{ Result=$result; Type=$resultType; Count=@($result).Count }

$result = Describe "Service" { It "is running" { (Get-Service Demo).Status | Should -Be Running } }
$resultType = if($null -eq $result){'<null>'}else{$result.GetType().FullName}
[pscustomobject]@{ Result=$result; Type=$resultType; Count=@($result).Count }

# Сценарий для ревью: Тест запускается на проде и создаёт ресурс.
BeforeAll { Import-Module "$PSScriptRoot/../Ops.psm1" -Force }
Describe 'operational contract' {
  Mock Invoke-RestMethod { @{status='ok'} } -ModuleName Ops
  It 'returns a structured result' { Invoke-OpsCheck | Should -Not -BeNullOrEmpty }
}

Test-NetConnection $host -Port 443 | Select-Object TcpTestSucceeded
Invoke-RestMethod "https://$host/health"

$result = & { Invoke-Pester -Configuration @{Run=@{Path="./tests"};Output=@{Verbosity="Detailed"}} }
$summary = [ordered]@{ IsNull=($null -eq $result); Count=@($result).Count }
if($null -ne $result){$summary.Type=$result.GetType().FullName};[pscustomobject]$summary

# Сценарий для ревью: Mock не сработал.
BeforeAll { Import-Module "$PSScriptRoot/../Ops.psm1" -Force }
Describe 'operational contract' {
  Mock Invoke-RestMethod { @{status='ok'} } -ModuleName Ops
  It 'returns a structured result' { Invoke-OpsCheck | Should -Not -BeNullOrEmpty }
}

# Сценарий для ревью: Тест медленный.
BeforeAll { Import-Module "$PSScriptRoot/../Ops.psm1" -Force }
Describe 'operational contract' {
  Mock Invoke-RestMethod { @{status='ok'} } -ModuleName Ops
  It 'returns a structured result' { Invoke-OpsCheck | Should -Not -BeNullOrEmpty }
}

# Сценарий для ревью: Тесты получают производственный секрет.
$context = [pscustomobject]@{ User=[Environment]::UserName; Host=$Host.Name; At=[datetimeoffset]::UtcNow }
$headers = @{ Authorization = "Bearer $env:API_TOKEN" }
Write-Information (ConvertTo-Json @{ Context=$context; Headers=$headers }) -InformationAction Continue
Invoke-RestMethod -Uri $uri -Headers $headers -ErrorAction Stop

# Сценарий для ревью: Mock скрывает проверку авторизации.
BeforeAll { Import-Module "$PSScriptRoot/../Ops.psm1" -Force }
Describe 'operational contract' {
  Mock Invoke-RestMethod { @{status='ok'} } -ModuleName Ops
  It 'returns a structured result' { Invoke-OpsCheck | Should -Not -BeNullOrEmpty }
}

# Сценарий для ревью: CI запускает неподписанные тестовые помощники с высокими правами.
$policy = Get-ExecutionPolicy -List
$signature = Get-AuthenticodeSignature -FilePath .\deploy.ps1
[pscustomobject]@{ Policy=$policy; Status=$signature.Status; Signer=$signature.SignerCertificate.Subject }
if($signature.Status -eq 'Valid'){ & .\deploy.ps1 }