Add some testing of actions

.github/actions/binder-link/action.yml

@@ -18,12 +18,16 @@ runs:
           var PR_HEAD_USERREPO = process.env.PR_HEAD_USERREPO;
           var PR_HEAD_REF = process.env.PR_HEAD_REF;
           var URL_PATH = process.env.URL_PATH;
-          github.issues.createComment({
+          var BODY = `[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/${PR_HEAD_USERREPO}/${PR_HEAD_REF}?urlpath=${URL_PATH}) :point_left: Launch a Binder on branch _${PR_HEAD_USERREPO}/${PR_HEAD_REF}_`;
+          var CONTENT = {
             issue_number: context.issue.number,
             owner: context.repo.owner,
             repo: context.repo.repo,
-            body: `[![Binder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/${PR_HEAD_USERREPO}/${PR_HEAD_REF}?urlpath=${URL_PATH}) :point_left: Launch a Binder on branch _${PR_HEAD_USERREPO}/${PR_HEAD_REF}_`
-          })
+            body: BODY
+          };
+          if ("${{ inputs.github_token }}" !== "FAKE") {
+            github.issues.createComment($CONTENT);
+          }
       env:
         PR_HEAD_REF: ${{ github.event.pull_request.head.ref }}
         PR_HEAD_USERREPO: ${{ github.event.pull_request.head.repo.full_name }}

.github/actions/downstream-test/action.yml

@@ -36,7 +36,7 @@ runs:
 
           # Test the downstream package
           eval ${test_command}
-          eval ${extra_test}
+          eval "${{inputs.extra_test}}"
 
           # Cleanup
           rm -rf ./test_venv

.github/workflows/tests.yml

@@ -0,0 +1,54 @@
+name: Tests
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    branches: ["*"]
+
+jobs:
+  downstream_defaults:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Base Setup
+        uses: ./.github/actions/base-setup
+      - name: Create a mock python package
+        run:
+          echo "from setuptools import setup; setup(name='foo')" > setup.py
+      - name: Check Downstream test with defaults
+        uses: ./.github/actions/downstream-test
+        with:
+          package_name: jupyter_client
+
+  downstream_overrides:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Base Setup
+        uses: ./.github/actions/base-setup
+      - name: Create a mock python package
+        run:
+          echo "from setuptools import setup; setup(name='foo')" > setup.py
+      - name: Check Downstream test with overrides
+        uses: ./.github/actions/downstream-test
+        with:
+          package_name: nbclient
+          package_spec: "nbclient[test] ipykernel"
+          test_command: "echo 'hello'"
+          extra_test: "pytest --pyargs nbclient"
+          env_values: IPYKERNEL_CELL_NAME=\<IPY-INPUT\>
+
+  binder_link:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Base Setup
+        uses: ./.github/actions/base-setup
+      - name: Check Binder Link
+        uses: ./.github/actions/binder-link
+        with:
+          github_token: "FAKE"
+          url_path: "/foo/bar"