[CI] Testing PR comment from another workflow (#2127)

.github/workflows/compare-artifacts.yml

@@ -9,7 +9,44 @@ on:
 jobs:
   Compare-artifacts:
     runs-on: ubuntu-latest
+    if: ${{ github.event.workflow_run.conclusion == 'success' }}
 
     steps:
-      - name: Echo
-        run: echo "Testing new workflow"
+      - name: 'Download artifact'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            let allArtifacts = await github.rest.actions.listWorkflowRunArtifacts({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               run_id: context.payload.workflow_run.id,
+            });
+            let matchArtifact = allArtifacts.data.artifacts.filter((artifact) => {
+              return artifact.name == "pr_number"
+            })[0];
+            let download = await github.rest.actions.downloadArtifact({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               artifact_id: matchArtifact.id,
+               archive_format: 'zip',
+            });
+            let fs = require('fs');
+            fs.writeFileSync(`${process.env.GITHUB_WORKSPACE}/pr_number.zip`, Buffer.from(download.data));
+
+      - name: 'Unzip artifact'
+        run: unzip pr_number.zip
+
+      - name: 'Comment on PR'
+        uses: actions/github-script@v6
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          script: |
+            let fs = require('fs');
+            let issue_number = Number(fs.readFileSync('./pr_number'));
+            echo $issue_number
+            await github.rest.issues.createComment({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: issue_number,
+              body: 'Ignore this message. This is to test another workflow posting comment on PR number ${issue_number}.'
+            });

.github/workflows/integration-tests.yml

@@ -153,6 +153,16 @@ jobs:
           sudo nvidia-smi -i 0 --lock-gpu-clocks=1280,1280
           python3 -m pytest -vs . --reruns 10
           sudo nvidia-smi -i 0 -rgc
+      - name: Save PR number
+        env:
+          PR_NUMBER: ${{ github.event.number }}
+        run: |
+          mkdir -p ./pr
+          echo $PR_NUMBER > ./pr/pr_number
+      - uses: actions/upload-artifact@v3
+        with:
+          name: pr_number
+          path: pr/
 
   Integration-Tests-Third-Party:
     needs: Runner-Preparation