Update file

Author: Vahila

AzureDevOps/DistributeTests.ps1

@@ -1,39 +1,43 @@
-#!/usr/bin/env bash
-# Distribute tests across multiple agents for parallel execution (Bash version)
-# Produces MATLAB cell array like:
-# {'/path/to/file1.m','/path/to/file2.m'}
-
-# Find all test files (*.m) under ./tests
-mapfile -t tests < <(find ./tests -type f -name "*.m" | sort)
-
-totalAgents=${CI_TOTAL:-1}
-agentNumber=${CI_INDEX:-1}
-testCount=${#tests[@]}
-
-echo "Total agents: $totalAgents"
-echo "Agent number: $agentNumber"
-echo "Total tests: $testCount"
-
-testsToRun=()
-
-# Slice test files so each agent gets unique tests
-for (( i=agentNumber; i<=testCount; i+=totalAgents )); do
-    file="${tests[i-1]}"
-    testsToRun+=("$file")
-    echo "Added $file"
-done
-
-# Format as MATLAB cell array: {'file1','file2'}
-joined="{"
-for idx in "${!testsToRun[@]}"; do
-    if [[ $idx -gt 0 ]]; then
-        joined+=","
-    fi
-    joined+="'${testsToRun[$idx]}'"
-done
-joined+="}"
-
-echo "Final test file list (MATLAB cell array): $joined"
-
-# Set as Azure Pipelines variable
-echo "##vso[task.setvariable variable=MATLABTestFiles;]$joined"
+<#  
+.SYNOPSIS  
+    Distribute the tests in VSTS pipeline across multiple agents 
+.DESCRIPTION  
+    This script slices tests files across multiple agents for faster execution.
+    We search for specific type of file structure (in this example test*), and slice them according to agent number
+    If we encounter multiple files [file1..file10] and if we have 2 agents, agent1 executes tests odd number of files while agent2 executes even number of files
+    For detalied slicing info: https://docs.microsoft.com/en-us/vsts/pipelines/test/parallel-testing-any-test-runner
+    We use JUnit style test results to publish the test reports.
+#>
+
+$tests = Get-ChildItem .\ -Filter "test*" # search for test files with specific pattern.
+$totalAgents = [int]$Env:SYSTEM_TOTALJOBSINPHASE # standard VSTS variables available using parallel execution; total number of parallel jobs running
+$agentNumber = [int]$Env:SYSTEM_JOBPOSITIONINPHASE  # current job position
+$testCount = $tests.Count
+
+# below conditions are used if parallel pipeline is not used. i.e. pipeline is running with single agent (no parallel configuration)
+if ($totalAgents -eq 0) {
+    $totalAgents = 1
+}
+if (!$agentNumber -or $agentNumber -eq 0) {
+    $agentNumber = 1
+}
+
+Write-Host "Total agents: $totalAgents"
+Write-Host "Agent number: $agentNumber"
+Write-Host "Total tests: $testCount"
+
+$testsToRun= @()
+
+# slice test files to make sure each agent gets unique test file to execute
+For ($i=$agentNumber; $i -le $testCount;) {
+    $file = $tests[$i-1]
+    $testsToRun = $testsToRun + $file
+    Write-Host "Added $file"
+    $i = $i + $totalAgents 
+ }
+
+# join all test files seperated by space. pytest runs multiple test files in following format pytest test1.py test2.py test3.py
+$testFiles = $testsToRun -Join " "
+Write-Host "Test files $testFiles"
+# write these files into variable so that we can run them using pytest in subsequent task. 
+Write-Host "##vso[task.setvariable variable=pytestfiles;]$testFiles" 

AzureDevOps/ParallelStrategy.yml

@@ -12,15 +12,15 @@ jobs:
           release: R2025a
           products: MATLAB_Test Simulink_Test
 
-      - powershell: .\AzureDevOps\DistributeTests.ps1 
+      - powershell: .\AzureDevOps\DistributeTests.ps1
         displayName: 'PowerShell Script to distribute tests'
 
       - task: RunMATLABTests@1
         inputs:
           selectByName: $(MATLABTestFiles)
-          sourceFolder: 
+          sourceFolder: src
         env:
-          MLM_LICENSE_TOKEN: $(MLM_LICENSE_TOKEN)        
+          MLM_LICENSE_TOKEN: $(MLM_LICENSE_TOKEN)
 
   - job: ParallelLinux
     # Parallel strategy to run tests in parallel
@@ -41,7 +41,7 @@ jobs:
       - task: RunMATLABTests@1
         inputs:
           selectByName: $(MATLABTestFiles)
-          sourceFolder: 
+          sourceFolder: src
         env:
           MLM_LICENSE_TOKEN: $(MLM_LICENSE_TOKEN)    
 
@@ -64,6 +64,6 @@ jobs:
       - task: RunMATLABTests@1
         inputs:
           selectByName: $(MATLABTestFiles)
-          sourceFolder: 
+          sourceFolder: src
         env:
           MLM_LICENSE_TOKEN: $(MLM_LICENSE_TOKEN)