Run presubmit tests in windows as well as linux. (#4672)

Co-authored-by: matt korwel <matt.korwel@gmail.com>

.github/actions/post-coverage-comment/action.yml

@@ -17,6 +17,9 @@ inputs:
   node_version:
     description: 'Node.js version for context in messages'
     required: true
+  os:
+    description: 'The os for context in messages'
+    required: true
   github_token:
     description: 'GitHub token for posting comments'
     required: true
@@ -91,7 +94,7 @@ runs:
         echo "</details>" >> "$comment_file"
         echo "" >> "$comment_file"
 
-        echo "_For detailed HTML reports, please see the 'coverage-reports-${{ inputs.node_version }}' artifact from the main CI run._" >> "$comment_file"
+        echo "_For detailed HTML reports, please see the 'coverage-reports-${{ inputs.node_version }}-${{ inputs.os }}' artifact from the main CI run._" >> "$comment_file"
 
     - name: Post Coverage Comment
       uses: thollander/actions-comment-pull-request@v3

.github/workflows/ci.yml

@@ -44,7 +44,7 @@ jobs:
 
   test:
     name: Test
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
     needs: lint
     permissions:
       contents: read
@@ -52,6 +52,7 @@ jobs:
       pull-requests: write
     strategy:
       matrix:
+        os: [ubuntu-latest, windows-latest]
         node-version: [20.x, 22.x, 24.x]
     steps:
       - name: Checkout repository
@@ -70,7 +71,9 @@ jobs:
         run: npm ci # Install fresh dependencies using the downloaded package-lock.json
 
       - name: Run tests and generate reports
-        run: NO_COLOR=true npm run test:ci
+        run: npm run test:ci
+        env:
+          NO_COLOR: true
 
       - name: Publish Test Report (for non-forks)
         if: always() && (github.event.pull_request.head.repo.full_name == github.repository)
@@ -85,14 +88,14 @@ jobs:
         if: always() && (github.event_name == 'pull_request' && github.event.pull_request.head.repo.full_name != github.repository)
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         with:
-          name: test-results-fork-${{ matrix.node-version }}
+          name: test-results-fork-${{ matrix.node-version }}-${{ matrix.os }}
           path: packages/*/junit.xml
 
       - name: Upload coverage reports
         uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4
         if: always()
         with:
-          name: coverage-reports-${{ matrix.node-version }}
+          name: coverage-reports-${{ matrix.node-version }}-${{ matrix.os }}
           path: packages/*/coverage
 
   post_coverage_comment:
@@ -106,7 +109,9 @@ jobs:
       pull-requests: write # For commenting
     strategy:
       matrix:
-        node-version: [22.x] # Reduce noise by only posting the comment once
+        # Reduce noise by only posting the comment once
+        os: [ubuntu-latest]
+        node-version: [22.x]
     steps:
       - name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
@@ -114,7 +119,7 @@ jobs:
       - name: Download coverage reports artifact
         uses: actions/download-artifact@d3f86a106a0bac45b974a628896c90dbdf5c8093 # v4
         with:
-          name: coverage-reports-${{ matrix.node-version }}
+          name: coverage-reports-${{ matrix.node-version }}-${{ matrix.os }}
           path: coverage_artifact # Download to a specific directory
 
       - name: Post Coverage Comment using Composite Action
@@ -125,6 +130,7 @@ jobs:
           cli_full_text_summary_file: coverage_artifact/cli/coverage/full-text-summary.txt
           core_full_text_summary_file: coverage_artifact/core/coverage/full-text-summary.txt
           node_version: ${{ matrix.node-version }}
+          os: ${{ matrix.os }}
           github_token: ${{ secrets.GITHUB_TOKEN }}
 
   codeql: