devops: added buildbot to test Lambda on CI

.github/workflows/tests.yml

@@ -0,0 +1,21 @@
+name: CI
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+jobs:
+  test:
+    runs-on: ubuntu-20.04
+    steps:
+    - uses: actions/checkout@v2
+    - name: Use Node.js
+      uses: actions/setup-node@v2
+      with:
+        node-version: 12.x
+    - name: Install dependencies
+      run: npm install
+    - name: Build project
+      run: npm run build
+    - name: Test lambda function
+      run: bash buildbots/stub.sh

buildbots/puppeteer.js

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+const chromium = require('../build/');
+
+exports.handler = async (event, context) => {
+  let browser = null;
+
+  try {
+    const browser = await chromium.puppeteer.launch({
+      executablePath: await chromium.executablePath,
+      defaultViewport: chromium.defaultViewport,
+      args: chromium.args,
+    });
+
+    const page = await browser.newPage();
+    await page.goto(event.url);
+    const data = await page.screenshot();
+    if (data.length === 0) {
+      throw new Error(`Screenshot is empty`);
+    }
+    console.log('Page title: ', await page.title());
+  } catch (error) {
+    throw error;
+  } finally {
+    if (browser !== null) {
+      await browser.close();
+    }
+  }
+};

buildbots/stub.sh

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+#/bin/bash
+
+set -e
+
+LOG_FILE="log.txt"
+
+echo "Running Puppeteer lambda function"
+docker run --rm -v "$PWD":/var/task:ro,delegated lambci/lambda:nodejs12.x buildbots/puppeteer.handler '{"url": "https://example.com"}' &> "$LOG_FILE"
+grep -Fq "Example Domain" "$LOG_FILE"
+echo "Sucessfully passed Puppeteer test"
+
+rm "$LOG_FILE"