test outputs

.github/workflows/actions-demo.yml

@@ -16,3 +16,29 @@ jobs:
               run: |
                   ls ${{ github.workspace }}
             - run: echo "🍏 This job's status is ${{ job.status }}."
+    make-output:
+        runs-on: ubuntu-latest
+        outputs:
+            output_1: ${{ steps.gen_output.outputs.output_1 }}
+            output_2: ${{ steps.gen_output.outputs.output_2 }}
+            output_3: ${{ steps.gen_output.outputs.output_3 }}
+        strategy:
+            matrix:
+                version: [1, 2, 3]
+        steps:
+            - name: Generate output
+              id: gen_output
+              run: |
+                  version="${{ matrix.version }}"
+                  echo "output_${version}=${version}" >> "$GITHUB_OUTPUT"
+    use-output:
+        runs-on: ubuntu-latest
+        needs: [make-output]
+        steps:
+            # Will show
+            # {
+            #   "output_1": "1",
+            #   "output_2": "2",
+            #   "output_3": "3"
+            # }
+            - run: echo '${{ toJSON(needs.make-output.outputs) }}'