PSWednesday Pester Containers Demo

demo.Parallel.ps1

$config = New-PesterConfiguration
$config.Run.PassThru = $true
$config.Output.Verbosity = 'Detailed'

#region An array of stuff
$collection = @()
$collection += Get-Module -ListAvailable | Where-Object { $_.Author -like 'Gilbert Sanchez' }
#endregion An array of stuff

#region Create containers
$job = $collection | ForEach-Object -AsJob -Parallel {
  # Make a copy from of the config object
  $config = $using:config
  $containers = @()
  $containers += New-PesterContainer -Data @{Module = $_ } -Path Module.Tests.ps1
  $config.Run.Container = $containers
  Invoke-Pester -Configuration $config
}
# https://gist.github.com/stefanstranger/839044c5c5c146cb97678933e9a001cc
$results = ($job | Wait-Job | Receive-Job -Keep)
#endregion


#region Create new Pester Object with merged parallel Pester Tests Results.
$Pester = [pester.Run]::new()
$results | ForEach-Object {
  $testResult = $_
  $pester.Containers += $testResult.Containers
  $pester.DiscoveryDuration += $testResult.DiscoveryDuration
  $pester.Duration += $testResult.Duration
  $pester.Executed += $testResult.Executed
  $pester.Failed += $testResult.Failed
  $pester.FailedBlocks += $testResult.FailedBlocks
  $pester.FailedBlocksCount += $testResult.FailedBlocksCount
  $pester.FailedContainers += $testResult.FailedContainers
  $pester.FailedContainersCount += $testResult.FailedContainersCount
  $pester.FailedCount += $testResult.FailedCount
  $pester.FrameworkDuration += $testResult.FrameworkDuration
  $pester.NotRun += $testResult.NotRun
  $pester.NotRunCount += $testResult.NotRunCount
  $pester.Passed += $testResult.Passed
  $pester.PassedCount += $testResult.PassedCount
  $pester.Result += $testResult.Result
  $pester.Skipped += $testResult.Skipped
  $pester.SkippedCount += $testResult.SkippedCount
  $pester.Tests += $testResult.Tests
  $pester.TotalCount += $testResult.TotalCount
  $pester.UserDuration += $testResult.UserDuration
}
# Update the executed at time to the earliest test run
$pester.ExecutedAt = $results.ExecutedAt | Sort-Object -Top 1
#endregion

demo.ps1

#requires -Module Pester

# Start with configuration file
$config = New-PesterConfiguration
$config.Run.PassThru = $true
$config.Output.Verbosity = 'Detailed'

#region An array of stuff
$collection = @()
$collection += Get-Module -ListAvailable | Where-Object { $_.Author -like 'Gilbert Sanchez' }
#endregion An array of stuff

#region Create containers
$containers = @()
foreach ($currentItemName in $collection) {
  $containers += New-PesterContainer -Data @{Module = $currentItemName } -Path Module.Tests.ps1
}
# Add the containers to the configuration
$config.Run.Container = $containers
#endregion Create containers

# Run the tests!
Invoke-Pester -Configuration $config

Module.Tests.ps1

param(
  [Parameter(Mandatory = $true)]
  $Module
)
Describe "<_.Name>" -ForEach $Module {
  It 'Has a version' {
    $_.version | Should -BeOfType [version]
  }
  It 'Has a description' {
    $_.description | Should -BeOfType [String]
  }
}