improve tests to run on all platforms

Author: vladopajic

.github/workflows/test.yml

@@ -5,8 +5,11 @@ permissions:
   pull-requests: write
 jobs:
   test:
-    name: test
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+
     steps:
       - name: checkout
         uses: actions/checkout@v4
@@ -22,6 +25,7 @@ jobs:
 
       - name: check test coverage
         id: coverage
+        if: runner.os == 'Linux'
         uses: vladopajic/go-test-coverage@v2
         with:
           config: ./.github/.testcoverage.yml
@@ -30,6 +34,7 @@ jobs:
 
       # Post coverage report as comment
       - name: find pull request ID
+        if: runner.os == 'Linux'
         run: |
           PR_DATA=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
             "https://api.github.com/repos/${{ github.repository }}/pulls?head=${{ github.repository_owner }}:${{ github.ref_name }}&state=open")
@@ -41,15 +46,15 @@ jobs:
             echo "No open pull request found for this branch."
           fi
       - name: find if coverage report is already present
-        if: env.pull_request_id
+        if: env.pull_request_id && runner.os == 'Linux'
         uses: peter-evans/find-comment@v3
         id: fc
         with:
           issue-number: ${{ env.pull_request_id }}
           comment-author: 'github-actions[bot]'
           body-includes: 'go-test-coverage report:'
       - name: post coverage report
-        if: env.pull_request_id
+        if: env.pull_request_id && runner.os == 'Linux'
         uses: peter-evans/create-or-update-comment@v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}