Add automated test.

Make application testable by adding success message element to DOM that is hidden when page loads but becomes visible when XHR upload to bucket finishes. Add automated test that uses Puppeteer to select a test file (stored in this repo under test/1x1.png) and click the upload button to upload it. The test is considered successful as long as the XHR for the file upload succeeds. Added GitHub Actions workflow that occasionally clears out the contents of the bucket which was created only for this automated test.

.github/dependabot.yml

@@ -8,8 +8,8 @@ updates:
   - package-ecosystem: npm
     directory: "/"
     schedule:
-      interval: "daily"
+      interval: "weekly"
   - package-ecosystem: npm
     directory: "/backend"
     schedule:
-      interval: "daily"
+      interval: "weekly"

.github/workflows/empty_b2_bucket.yaml

@@ -0,0 +1,31 @@
+# This workflow periodically empties out the B2 bucket used for the automated
+# test. Each time the test runs, a file revision is uploaded to the bucket, so
+# I need to clear the revisions out once in a while. Here, it happens every
+# month.
+
+name: Empty test bucket
+
+on:
+  schedule:
+    - cron: '0 0 1 * *'
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: Empty bucket
+    runs-on: ubuntu-latest
+    steps:
+      - run: |
+            echo "Downloading B2 CLI..."
+            wget -q https://github.com/Backblaze/B2_Command_Line_Tool/releases/latest/download/b2-linux
+            mv b2-linux b2
+            chmod +x b2
+            echo "Done."
+
+            echo "Authenticating CLI..."
+            ./b2 authorize_account $B2_KEY_ID $B2_APPLICATION_KEY
+            echo "Done."
+
+            echo "Emptying test bucket contents..."
+            ./b2 rm --versions --recursive $B2_BUCKET_NAME
+            echo "Done."

.github/workflows/test.yaml

@@ -3,10 +3,10 @@ name: Run Tests
 on: [push]
 
 jobs:
-    test:
-        name: Run Tests
-        runs-on: ubuntu-latest
-        steps:
-            - uses: actions/checkout@v2
-            - run: npm install
-            - run: npm test
+  test:
+    name: Run Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - run: npm install
+      - run: npm test

.gitignore

@@ -1,3 +1,3 @@
 node_modules
-.vscode
-dist
+dist
+run_tests.sh

.vscode/launch.json

@@ -0,0 +1,18 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Launch Program",
+            "skipFiles": [
+                "<node_internals>/**"
+            ],
+            "program": "${workspaceFolder}/node_modules/mocha/bin/_mocha",
+            "args": [ "${workspaceFolder}/test/index.spec.js" ]
+        }
+    ]
+}

LICENSE

@@ -21,4 +21,4 @@ OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 OTHER DEALINGS IN THE SOFTWARE.
 
-For more information, please refer to <http://unlicense.org>
+For more information, please refer to <http://unlicense.org>