name: Run StressTests (for 15 minutes)

on:
  schedule:
    - cron: '0 0 * * *' # Runs every day at midnight UTC
  push:
    branches: [ v2_release, v2_develop ]
    paths-ignore:
      - '**.md'
      
jobs:
  run_stress_tests:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest ]

    timeout-minutes: 70 # Allow some buffer time beyond the 1-hour test duration
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup .NET Core
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: 8.x
          dotnet-quality: 'ga'

      - name: Install dependencies
        run: dotnet restore

      - name: Build StressTests
        run: dotnet build Tests/StressTests --configuration Debug --no-restore

      - name: Run StressTests for 15 minutes
        run: |
          end=$((SECONDS+900))
          while [ $SECONDS -lt $end ]; do
            dotnet test Tests/StressTests --no-build --verbosity normal --diag:logs/${{ runner.os }}/logs.txt --blame --blame-crash --blame-hang --blame-hang-timeout 60s --blame-crash-collect-always -- xunit.stopOnFail=true
          done

      - name: Upload Test Logs
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: stress-test-logs-${{ runner.os }}
          path: |
            logs/
            TestResults/StressTests

  parallel_unittests_stress:
    name: Parallel Unit Tests Stress (3 iterations)
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ ubuntu-latest, windows-latest, macos-latest ]

    timeout-minutes: 90
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Setup .NET Core
        uses: actions/setup-dotnet@v4
        with:
          dotnet-version: 8.x
          dotnet-quality: 'ga'

      - name: Install dependencies
        run: dotnet restore

      - name: Build UnitTestsParallelizable
        run: dotnet build Tests/UnitTestsParallelizable --configuration Debug --no-restore

      - name: Disable Windows Defender (Windows only)
        if: runner.os == 'Windows'
        shell: powershell
        run: |
          Add-MpPreference -ExclusionPath "${{ github.workspace }}"
          Add-MpPreference -ExclusionProcess "dotnet.exe"
          Add-MpPreference -ExclusionProcess "testhost.exe"
          Add-MpPreference -ExclusionProcess "VSTest.Console.exe"

      - name: Set VSTEST_DUMP_PATH
        shell: bash
        run: echo "VSTEST_DUMP_PATH=logs/UnitTestsParallelizable/${{ runner.os }}/" >> $GITHUB_ENV

      - name: Run UnitTestsParallelizable (3 iterations with varying parallelization)
        shell: bash
        run: |
          # Run tests 3 times with different parallelization settings to expose concurrency issues
          # Run 1: Default parallelization (2x) - standard test execution
          # Run 2: Maximum parallelization (unlimited) - stress test with high concurrency
          # Run 3: Single-threaded execution (1) - deterministic execution to expose ordering issues
          for RUN in {1..3}; do
            echo "============================================"
            echo "Starting test run $RUN of 3"
            echo "============================================"
            
            # Use a combination of run number and timestamp to create different execution patterns
            SEED=$((1000 + $RUN + $(date +%s) % 1000))
            echo "Using randomization seed: $SEED"
            
            # Vary the xUnit parallelization based on run number to expose race conditions
            if [ $RUN -eq 1 ]; then
              XUNIT_MAX_PARALLEL_THREADS="2x"
              echo "Run $RUN: Using default parallelization (2x)"
            elif [ $RUN -eq 2 ]; then
              XUNIT_MAX_PARALLEL_THREADS="unlimited"
              echo "Run $RUN: Using maximum parallelization (unlimited)"
            else
              XUNIT_MAX_PARALLEL_THREADS="1"
              echo "Run $RUN: Using single-threaded execution"
            fi
            
            dotnet test Tests/UnitTestsParallelizable \
              --no-build \
              --verbosity normal \
              --settings Tests/UnitTestsParallelizable/runsettings.xml \
              --diag:logs/UnitTestsParallelizable/${{ runner.os }}/run${RUN}-logs.txt \
              --blame \
              --blame-crash \
              --blame-hang \
              --blame-hang-timeout 60s \
              --blame-crash-collect-always \
              -- xUnit.MaxParallelThreads=${XUNIT_MAX_PARALLEL_THREADS}
            
            if [ $? -ne 0 ]; then
              echo "ERROR: Test run $RUN failed!"
              exit 1
            fi
            
            echo "Test run $RUN completed successfully"
            echo ""
          done
          
          echo "============================================"
          echo "All 3 test runs completed successfully!"
          echo "============================================"

      - name: Upload UnitTestsParallelizable Logs
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: parallel_unittests_stress-logs-${{ runner.os }}
          path: |
            logs/UnitTestsParallelizable/
            TestResults/