Functional test suite starter

Contains test runner Docker file and a sample smoke test. Smoke test
build PolyGerrit app, serves it locally and expects page title to be
updated to the default value.

Change-Id: I8ab2ca8a97830eefa1c697c2e51be82cbc1657c7

polygerrit-ui/app/test/functional/README.md

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+# Functional test suite
+
+## Installing Docker (OSX)
+
+Simplest way to install all of those is to use Homebrew:
+
+```
+brew cask install docker
+```
+
+This will install a Docker in Applications. To run if from the command-line:
+
+```
+open /Applications/Docker.app
+```
+
+It'll require privileged access and will require user password to be entered.
+
+To validate Docker is installed correctly, run hello-world image:
+
+```
+docker run hello-world
+```
+
+## Building a Docker image
+
+Should be done once only for development purposes, run from the Gerrit checkout
+path:
+
+```
+docker build -t gerrit/polygerrit-functional:v1 \
+  polygerrit-ui/app/test/functional/infra
+```
+
+## Running a smoke test
+
+Running a smoke test from Gerrit checkout path:
+
+```
+./polygerrit-ui/app/test/functional/run_functional.sh
+```
+
+The successful output should be something similar to this:
+
+```
+Starting local server..
+Starting Webdriver..
+Started
+.
+
+
+1 spec, 0 failures
+Finished in 2.565 seconds
+```

polygerrit-ui/app/test/functional/infra/Dockerfile

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+FROM selenium/standalone-chrome-debug
+
+USER root
+
+# nvm environment variables
+ENV NVM_DIR /usr/local/nvm
+ENV NODE_VERSION 9.4.0
+
+# install nvm
+# https://github.com/creationix/nvm#install-script
+RUN wget -qO- https://raw.githubusercontent.com/creationix/nvm/v0.33.8/install.sh | bash
+
+# install node and npm
+RUN [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh" \
+    && nvm install $NODE_VERSION \
+    && nvm alias default $NODE_VERSION \
+    && nvm use default
+
+ENV NODE_PATH $NVM_DIR/v$NODE_VERSION/lib/node_modules
+ENV PATH $NVM_DIR/versions/node/v$NODE_VERSION/bin:$PATH
+
+RUN npm install -g jasmine
+RUN npm install -g http-server
+
+USER seluser
+
+RUN mkdir -p /tmp/app
+WORKDIR /tmp/app
+
+RUN npm init -y
+RUN npm install --save selenium-webdriver
+
+EXPOSE 8080
+
+COPY test-infra.js /tmp/app/node_modules
+COPY run.sh /tmp/app/
+
+ENTRYPOINT [ "/tmp/app/run.sh" ]

polygerrit-ui/app/test/functional/infra/run.sh

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+#!/bin/sh
+echo Starting local server..
+cp /app/polygerrit_ui.zip .
+unzip -q polygerrit_ui.zip
+nohup http-server polygerrit_ui > /tmp/http-server.log 2>&1 &
+
+echo Starting Webdriver..
+nohup /opt/bin/entry_point.sh > /tmp/webdriver.log 2>&1 &
+
+# Wait for servers to start
+sleep 5
+
+cp $@ .
+jasmine $(basename $@)

polygerrit-ui/app/test/functional/infra/test-infra.js

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+'use strict';
+
+const {Builder} = require('selenium-webdriver');
+
+let driver;
+
+function setup() {
+  return new Builder()
+      .forBrowser('chrome')
+      .usingServer('http://localhost:4444/wd/hub')
+      .build()
+      .then(d => {
+        driver = d;
+        return driver.get('http://localhost:8080');
+      })
+      .then(() => driver);
+}
+
+function cleanup() {
+  return driver.quit();
+}
+
+exports.setup = setup;
+exports.cleanup = cleanup;

polygerrit-ui/app/test/functional/run_functional.sh

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+#!/usr/bin/env bash
+
+bazel build //polygerrit-ui/app:polygerrit_ui
+
+docker run --rm \
+  -p 5900:5900 \
+  -v `pwd`/polygerrit-ui/app/test/functional:/tests \
+  -v `pwd`/bazel-genfiles/polygerrit-ui/app:/app \
+  -it gerrit/polygerrit-functional:v1 \
+  /tests/test.js

polygerrit-ui/app/test/functional/test.js

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+/**
+ * @fileoverview Minimal viable frontend functional test.
+ */
+'use strict';
+
+const {until} = require('selenium-webdriver');
+const {setup, cleanup} = require('test-infra');
+
+jasmine.DEFAULT_TIMEOUT_INTERVAL = 20000;
+
+describe('example ', () => {
+  let driver;
+
+  beforeAll(() => {
+    return setup().then(d => driver = d);
+  });
+
+  afterAll(() => {
+    return cleanup();
+  });
+
+  it('should update title', () => {
+    return driver.wait(until.titleIs('status:open · Gerrit Code Review'), 5000);
+  });
+});