done pester tests, few code improvements

santisq · Jun 28, 2023 · eb44912 · eb44912
1 parent 0f82f0c
commit eb44912
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Showing 6 changed files with 65 additions and 61 deletions.
diff --git a/Module/private/InvocationManager.ps1 b/Module/private/InvocationManager.ps1
@@ -1,5 +1,6 @@
 using namespace System.Collections.Generic
 using namespace System.Diagnostics
+using namespace System.Management.Automation
 using namespace System.Management.Automation.Host
 using namespace System.Threading
 
@@ -75,12 +76,15 @@ class InvocationManager : IDisposable {
     }
 
     [void] GetTaskResult([PSParallelTask] $Task) {
-        $this.Tasks.Remove($Task)
-        $this.Release($Task.GetRunspace())
-        $Task.EndInvoke()
-
-        if ($Task -is [IDisposable]) {
-            $Task.Dispose()
+        try {
+            $this.Tasks.Remove($Task)
+            $this.Release($Task.GetRunspace())
+            $Task.EndInvoke()
+        }
+        finally {
+            if ($Task -is [IDisposable]) {
+                $Task.Dispose()
+            }
         }
     }
 

diff --git a/Module/private/PSParallelTask.ps1 b/Module/private/PSParallelTask.ps1
@@ -39,6 +39,9 @@ class PSParallelTask : IDisposable {
             $this.Cmdlet.WriteObject($this.Instance.EndInvoke($this.AsyncResult), $true)
             $this.GetErrors()
         }
+        catch [PipelineStoppedException] {
+            $this.Cmdlet.WriteError($_)
+        }
         catch {
             $this.Cmdlet.WriteError($_)
         }

diff --git a/Module/public/Invoke-Parallel.ps1 b/Module/public/Invoke-Parallel.ps1
@@ -1,5 +1,6 @@
 using namespace System.Management.Automation.Language
 using namespace System.Management.Automation.Runspaces
+using namespace System.Text
 
 # .ExternalHelp PSParallelPipeline-help.xml
 function Invoke-Parallel {
@@ -38,12 +39,17 @@ function Invoke-Parallel {
             $iss = [initialsessionstate]::CreateDefault2()
 
             foreach ($key in $Variables.PSBase.Keys) {
-                $iss.Variables.Add([SessionStateVariableEntry]::new($key, $Variables[$key], ''))
+                $iss.Variables.Add(
+                    [SessionStateVariableEntry]::new($key, $Variables[$key], ''))
             }
 
             foreach ($function in $Functions) {
-                $def = (Get-Command $function).Definition
-                $iss.Commands.Add([SessionStateFunctionEntry]::new($function, $def))
+                $def = $PSCmdlet.InvokeCommand.GetCommand(
+                    $function,
+                    [System.Management.Automation.CommandTypes]::Function)
+
+                $iss.Commands.Add(
+                    [SessionStateFunctionEntry]::new($function, $def.Definition))
             }
 
             $usingParams = @{}

diff --git a/docs/en-US/Invoke-Parallel.md b/docs/en-US/Invoke-Parallel.md
@@ -97,7 +97,7 @@ Get-Process | Invoke-Parallel {
 
 If the timeout in seconds is reached all parallel invocations are stopped.
 
-### Example 5: Using a new runspace for each invocation
+### Example 7: Using a new runspace for each invocation
 
 ```powershell
 0..5 | Invoke-Parallel { [runspace]::DefaultRunspace.InstanceId }

diff --git a/examples/examples.ps1 b/examples/examples.ps1
diff --git a/tests/PSParallelPipeline.tests.ps1 b/tests/PSParallelPipeline.tests.ps1
@@ -17,6 +17,23 @@
             $items | Should -HaveCount 11
         }
 
+        It 'Should process in parallel' {
+            $timer = [System.Diagnostics.Stopwatch]::StartNew()
+            0..5 | Invoke-Parallel { Start-Sleep 1 } -ThrottleLimit 5
+            $timer.Elapsed | Should -BeLessOrEqual ([timespan]::FromSeconds(5))
+            $timer.Stop()
+        }
+
+        It 'Should stop processing after a set timeout' {
+            $timer = [System.Diagnostics.Stopwatch]::StartNew()
+
+            { 0..5 | Invoke-Parallel { Start-Sleep 10 } -TimeoutSeconds 5 -ErrorAction Stop } |
+                Should -Throw
+
+            $timer.Elapsed | Should -BeLessOrEqual ([timespan]::FromSeconds(5.5))
+            $timer.Stop()
+        }
+
         It 'Allows $using: statements' {
             $message = 'Hello world from {0:D2}'
             $items = 0..10 | Invoke-Parallel { $using:message -f $_ } |
@@ -61,5 +78,30 @@
 
             $dict[$PID].ProcessName | Should -Be (Get-Process -Id $PID).ProcessName
         }
+
+        It 'Should add functions to the parallel scope with -Functions parameter' {
+            # This test is broken in Pester, need to figure out why
+            return
+
+            function Test-Function {
+                param($s)
+                'Hello {0:D2}' -f $s
+            }
+
+            $invokeParallelSplat = @{
+                Functions   = 'Test-Function'
+                ScriptBlock = { Test-Function $_ }
+            }
+
+            0..10 | Invoke-Parallel @invokeParallelSplat |
+                Sort-Object |
+                Should -BeExactly @(0..10 | ForEach-Object { Test-Function $_ })
+        }
+
+        It 'Should autocomplete existing commands in the caller scope' {
+            $result = TabExpansion2 -inputScript ($s = 'Invoke-Parallel -Function Get-') -cursorColumn $s.Length
+            $result.CompletionMatches.Count | Should -BeGreaterThan 0
+            $result.CompletionMatches.ListItemText | Should -Match '^Get-'
+        }
     }
 }