Add test command workflow

.github/workflows/slash-command-dispatch.yml

@@ -0,0 +1,16 @@
+name: Slash Command Dispatch
+on:
+  issue_comment:
+    types: [created]
+jobs:
+  slashCommandDispatch:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Slash Command Dispatch
+        uses: peter-evans/slash-command-dispatch@v1
+        with:
+          token: ${{ secrets.REPO_ACCESS_TOKEN }}
+          reaction-token: ${{ secrets.GITHUB_TOKEN }}
+          commands: test
+          permission: admin
+          named-args: true

.github/workflows/test-command.yml

@@ -0,0 +1,60 @@
+name: Test Command
+on:
+  repository_dispatch:
+    types: [test-command]
+jobs:
+  testCreateOrUpdateComment:
+    runs-on: ubuntu-latest
+    steps:
+      # Get the target repository and branch
+      - name: Get the target repository and branch
+        id: vars
+        run: |
+          repository=${{ github.event.client_payload.slash_command.repository }}
+          if [[ -z "$repository" ]]; then repository=${{ github.repository }}; fi
+          echo ::set-output name=repository::$repository
+          branch=${{ github.event.client_payload.slash_command.branch }}
+          if [[ -z "$branch" ]]; then branch="master"; fi
+          echo ::set-output name=branch::$branch
+
+      # Checkout the branch to test
+      - uses: actions/checkout@v2
+        with:
+          repository: ${{ steps.vars.outputs.repository }}
+          ref: ${{ steps.vars.outputs.branch }}
+
+      # Test create
+      - name: Create comment
+        uses: ./
+        id: couc
+        with:
+          issue-number: 1
+          body: |
+            This is a multi-line test comment
+            - With GitHub **Markdown**
+            - Created by [create-or-update-comment][1]
+
+            [1]: https://github.com/peter-evans/create-or-update-comment
+          reaction-type: '+1'
+
+      # Test update
+      - name: Update comment
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          body: |
+            **Edit:** Some additional info
+          reaction-type: eyes
+
+      - name: Add reaction
+        uses: ./
+        with:
+          comment-id: ${{ steps.couc.outputs.comment-id }}
+          reaction-type: heart
+
+      - name: Add reaction
+        uses: peter-evans/create-or-update-comment@v1
+        with:
+          repository: ${{ github.event.client_payload.github.payload.repository.full_name }}
+          comment-id: ${{ github.event.client_payload.github.payload.comment.id }}
+          reaction-type: hooray