Update functions instances used by device-tests and smoke-tests. (#2429)

* Update functions instances used by device-tests and smoke-tests.

- upgrade the version of node.js used to build functions from 6 to 12
- add source code for functions instance used by smoke-tests

Author: yifanyang

firebase-functions/src/androidTest/backend/functions/package.json

@@ -2,14 +2,11 @@
   "name": "functions",
   "description": "Cloud Functions for Firebase",
   "dependencies": {
-    "firebase-admin": "~4.2.1",
-    "firebase-functions": "^0.5.7"
-  },
-  "devDependencies": {
-    "@google-cloud/functions-emulator": "1.0.0-beta.4"
+    "firebase-admin": "9.4.2",
+    "firebase-functions": "3.13.1"
   },
   "private": true,
   "engines": {
-    "node": "8"
+    "node": "12"
   }
 }

smoke-tests/src/androidTest/backend/functions/.firebaserc

@@ -0,0 +1 @@
+{}

smoke-tests/src/androidTest/backend/functions/.gitignore

@@ -0,0 +1,66 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+firebase-debug.log*
+firebase-debug.*.log*
+
+# Firebase cache
+.firebase/
+
+# Firebase config
+
+# Uncomment this if you'd like others to create their own Firebase project.
+# For a team working on the same Firebase project(s), it is recommended to leave
+# it commented so all members can deploy to the same project(s) in .firebaserc.
+# .firebaserc
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env

smoke-tests/src/androidTest/backend/functions/README.md

@@ -0,0 +1,27 @@
+# Function definitions required for smoke tests
+
+The tests assume that these functions are deployed to the project used by smoke tests.
+
+To deploy the functions, run the following commands:
+
+```bash
+# if not already logged into firebase-cli run
+firebase login
+firebase use $PROJECT_ID
+
+# build and deploy functions
+echo $(cd functions && npm install)
+firebase deploy --only functions
+```
+
+To verify that deployment is successful, run the following commands:
+
+```bash
+curl -X POST -H "Content-Type:application/json" https://us-central1-fireescape-smoke-tests.cloudfunctions.net/addNumbers -d '{"data":{"firstNumber":13,"secondNumber":17}}'
+```
+
+It should return back:
+
+```bash
+{"result":{"firstNumber":13,"secondNumber":17,"operator":"+","operationResult":30}}
+```

smoke-tests/src/androidTest/backend/functions/firebase.json

@@ -0,0 +1,7 @@
+{
+  "functions": {
+    "predeploy": [
+      "npm --prefix \"$RESOURCE_DIR\" run lint"
+    ]
+  }
+}

smoke-tests/src/androidTest/backend/functions/functions/.eslintrc.js

@@ -0,0 +1,14 @@
+module.exports = {
+  root: true,
+  env: {
+    es6: true,
+    node: true,
+  },
+  extends: [
+    "eslint:recommended",
+    "google",
+  ],
+  rules: {
+    quotes: ["error", "double"],
+  },
+};

smoke-tests/src/androidTest/backend/functions/functions/index.js

@@ -0,0 +1,43 @@
+// Copyright 2021 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+const functions = require("firebase-functions");
+
+// // Create and Deploy Your First Cloud Functions
+// // https://firebase.google.com/docs/functions/write-firebase-functions
+//
+// exports.helloWorld = functions.https.onRequest((request, response) => {
+//   functions.logger.info("Hello logs!", {structuredData: true});
+//   response.send("Hello from Firebase!");
+// });
+
+exports.addNumbers = functions.https.onCall((data) => {
+  const firstNumber = data.firstNumber;
+  const secondNumber = data.secondNumber;
+
+  if (!Number.isFinite(firstNumber) || !Number.isFinite(secondNumber)) {
+    throw new functions.https.HttpsError(
+        "invalid-argument",
+        "The function must be called with " +
+        "two arguments \"firstNumber\" and \"secondNumber\" " +
+        "which must both be numbers.");
+  }
+
+  return {
+    firstNumber: firstNumber,
+    secondNumber: secondNumber,
+    operator: "+",
+    operationResult: firstNumber + secondNumber,
+  };
+});