build: run chrome headless in travis

.travis.yml

@@ -1,5 +1,6 @@
 language: node_js
 sudo: false
+dist: trusty
 
 node_js:
   - '--lts'
@@ -9,6 +10,7 @@ addons:
     # SAUCE_ACCESS_KEY<=secret for FIREBASE_ACCESS_TOKEN to work around travis-ci/travis-ci#7223, unencrypted value in valentine as FIREBASE_ACCESS_TOKEN>
     # we alias FIREBASE_ACCESS_TOKEN to $SAUCE_ACCESS_KEY in env.sh and set the SAUCE_ACCESS_KEY there
     - secure: "PKts/IbxuJRWWOEeiGbl8Z9zds0M+hIdCH/g/E4WbQ9yzSvSbdwzfmRfFccQFjxjsrY7+SJMVjsURZy+xUyBpzqgWYHUItnSVqjZb8DlyAU2IXyg8TM9BVLkGGe6k5k4PIFVmfMMMzQwWMM0X0W9w3oYmfHL5egxwSHvf9HIqLolLNXg8sqamIdS5d5KoCXf1c+oRjN/IMBktzNBR6N4OFOZQXVoepXNiIvTWAcTtOPBvFWdKP2n7RVioHKdm4a85aCUpDJp+LYGaLqiQZoRzmzfVTnAhTAPdd4ao5w/+jojrfZIHV55bqYF9rLnQMTneKsiyVNVYJzOLuxmARa/EEKfZld+J3rX4/o4cogrU38YSZF+T7J9g/7CTsnIZ3F6W6m+8iJbIBh55nGOQi5PVe458Q/nGb3fgQd2Z4+6lK9k479H4Ssh/Y7hbVQbepqEVIXzZKqWX6/ZE4iWoR/Q2dm0hySFmmB/R2etixX5JxhnHvgobTYIQ+1liJVp/3YFW1ru64Yg6yz/V291Bhh9g31znmTROCJ/usAmZZaLUqW1TDKnLIMP+M74MF9XERqcWKywXRFwxP4E5uDnx/vAyN49gL+SDfrBUxUtXrTkKZAlglwo9SgA7cOYEPWrionvKcGm87gCBYHFUmXZNQVzh212fpuJYXb/vy0sPDj8La4="
+  chrome: stable
 
 branches:
   only:
@@ -17,13 +19,14 @@ branches:
 jobs:
   include:
     - env: "MODE=lint"
-    - env: "MODE=e2e"
     - env: "MODE=aot"
     - env: "MODE=payload"
     - env: "MODE=prerender"
     - env: "MODE=closure-compiler"
+    - env: "MODE=e2e"
     - env: "MODE=saucelabs_required"
     - env: "MODE=browserstack_required"
+    - env: "MODE=travis_required"
     - stage: Deploy
       script: ./scripts/ci/publish-artifacts.sh
       env: "MODE=release"

scripts/ci/env.sh

@@ -1,12 +1,14 @@
-#!/usr/bin/env bash
+#!/bin/bash
 
+if [[ -z "${TRAVIS}" ]]; then
+  echo "This script can only setup the environment inside of Travis builds"
+  exit 0
+fi
 
-if [[ ${TRAVIS:-} ]]; then
-  # If FIREBASE_ACCESS_TOKEN not set yet, export the FIREBASE_ACCESS_TOKEN using the JWT token that Travis generated and exported for SAUCE_ACCESS_KEY.
-  # This is a workaround for travis-ci/travis-ci#7223
-  # WARNING: FIREBASE_ACCESS_TOKEN should NOT be printed
-  export FIREBASE_ACCESS_TOKEN=${FIREBASE_ACCESS_TOKEN:-$SAUCE_ACCESS_KEY}
+# If FIREBASE_ACCESS_TOKEN not set yet, export the FIREBASE_ACCESS_TOKEN using the JWT token that Travis generated and exported for SAUCE_ACCESS_KEY.
+# This is a workaround for travis-ci/travis-ci#7223
+# WARNING: FIREBASE_ACCESS_TOKEN should NOT be printed
+export FIREBASE_ACCESS_TOKEN=${FIREBASE_ACCESS_TOKEN:-$SAUCE_ACCESS_KEY}
 
-  # - we overwrite the value set by Travis JWT addon here to work around travis-ci/travis-ci#7223 for FIREBASE_ACCESS_TOKEN
-  export SAUCE_ACCESS_KEY=9b988f434ff8-fbca-8aa4-4ae3-35442987
-fi
+# - we overwrite the value set by Travis JWT addon here to work around travis-ci/travis-ci#7223 for FIREBASE_ACCESS_TOKEN
+export SAUCE_ACCESS_KEY=9b988f434ff8-fbca-8aa4-4ae3-35442987

scripts/ci/sources/mode.sh

@@ -2,27 +2,27 @@
 source ./scripts/ci/sources/tunnel.sh
 
 is_e2e() {
-  [[ "$MODE" = e2e ]]
+  [[ "${MODE}" = e2e ]]
 }
 
 is_lint() {
-  [[ "$MODE" = lint ]]
+  [[ "${MODE}" = lint ]]
 }
 
 is_aot() {
-  [[ "$MODE" = aot ]]
+  [[ "${MODE}" = aot ]]
 }
 
 is_closure_compiler() {
-  [[ "$MODE" = closure-compiler ]]
+  [[ "${MODE}" = closure-compiler ]]
 }
 
 is_payload() {
-  [[ "$MODE" = payload ]]
+  [[ "${MODE}" = payload ]]
 }
 
 is_unit() {
-  [[ "$MODE" = saucelabs_required || "$MODE" = browserstack_required ]]
+  [[ "${MODE}" =~ ^.*_(optional|required)$ ]]
 }
 
 is_prerender() {

test/browser-providers.js

@@ -2,32 +2,32 @@
 
 /*
  * Browser Configuration for the different jobs in the CI.
- * Target can be either: BS (Browserstack) | SL (Saucelabs) | null (To not run at all)
+ * Target can be either: BS (Browserstack) | SL (Saucelabs) | TC (Travis CI) | null (To not run)
  */
 const browserConfig = {
-  'Chrome':       { unitTest: {target: 'BS', required: true  }},
-  'Firefox':      { unitTest: {target: 'BS', required: true  }},
-  'ChromeBeta':   { unitTest: {target: null, required: false }},
-  'FirefoxBeta':  { unitTest: {target: null, required: false }},
-  'ChromeDev':    { unitTest: {target: null, required: true  }},
-  'FirefoxDev':   { unitTest: {target: null, required: true  }},
-  'IE9':          { unitTest: {target: null, required: false }},
-  'IE10':         { unitTest: {target: null, required: true  }},
-  'IE11':         { unitTest: {target: 'SL', required: true  }},
-  'Edge':         { unitTest: {target: 'SL', required: true  }},
-  'Android4.1':   { unitTest: {target: null, required: false }},
-  'Android4.2':   { unitTest: {target: null, required: false }},
-  'Android4.3':   { unitTest: {target: null, required: false }},
-  'Android4.4':   { unitTest: {target: null, required: false }},
-  'Android5':     { unitTest: {target: null, required: false }},
-  'Safari7':      { unitTest: {target: null, required: false }},
-  'Safari8':      { unitTest: {target: null, required: false }},
-  'Safari9':      { unitTest: {target: 'SL', required: true }},
-  'Safari10':     { unitTest: {target: 'BS', required: true }},
-  'iOS7':         { unitTest: {target: null, required: false }},
-  'iOS8':         { unitTest: {target: null, required: false }},
-  'iOS9':         { unitTest: {target: 'BS', required: true  }},
-  'WindowsPhone': { unitTest: {target: null, required: false }}
+  'ChromeHeadless_CI': { unitTest: {target: 'TC', required: true  }},
+  'Firefox':           { unitTest: {target: 'BS', required: true  }},
+  'ChromeBeta':        { unitTest: {target: null, required: false }},
+  'FirefoxBeta':       { unitTest: {target: null, required: false }},
+  'ChromeDev':         { unitTest: {target: null, required: true  }},
+  'FirefoxDev':        { unitTest: {target: null, required: true  }},
+  'IE9':               { unitTest: {target: null, required: false }},
+  'IE10':              { unitTest: {target: null, required: true  }},
+  'IE11':              { unitTest: {target: 'SL', required: true  }},
+  'Edge':              { unitTest: {target: 'SL', required: true  }},
+  'Android4.1':        { unitTest: {target: null, required: false }},
+  'Android4.2':        { unitTest: {target: null, required: false }},
+  'Android4.3':        { unitTest: {target: null, required: false }},
+  'Android4.4':        { unitTest: {target: null, required: false }},
+  'Android5':          { unitTest: {target: null, required: false }},
+  'Safari7':           { unitTest: {target: null, required: false }},
+  'Safari8':           { unitTest: {target: null, required: false }},
+  'Safari9':           { unitTest: {target: 'SL', required: true  }},
+  'Safari10':          { unitTest: {target: 'BS', required: true  }},
+  'iOS7':              { unitTest: {target: null, required: false }},
+  'iOS8':              { unitTest: {target: null, required: false }},
+  'iOS9':              { unitTest: {target: 'BS', required: true  }},
+  'WindowsPhone':      { unitTest: {target: null, required: false }}
 };
 
 /** Exports all available remote browsers. */
@@ -43,14 +43,26 @@ exports.platformMap = {
     required: buildConfiguration('unitTest', 'BS', true),
     optional: buildConfiguration('unitTest', 'BS', false)
   },
+  'travis': {
+    required: buildConfiguration('unitTest', 'TC', true),
+    optional: buildConfiguration('unitTest', 'TC', false)
+  }
 };
 
 /** Build a list of configuration (custom launcher names). */
 function buildConfiguration(type, target, required) {
-  return Object.keys(browserConfig)
-    .map(item => [item, browserConfig[item][type]])
-    .filter(([, conf]) => conf.required === required && conf.target === target)
-    .map(([item]) => `${target}_${item.toUpperCase()}`);
+  const targetBrowsers = Object.keys(browserConfig)
+    .map(browserName => [browserName, browserConfig[browserName][type]])
+    .filter(([, config]) => config.required === required && config.target === target)
+    .map(([browserName]) => browserName);
+
+  // For browsers that run on Travis CI the browser name shouldn't be prefixed with the shortcut
+  // of Travis. The different Karma launchers only work with the plain browser name (e.g Firefox)
+  if (target === 'TC') {
+    return targetBrowsers;
+  }
+
+  return targetBrowsers.map(browserName => `${target}_${browserName.toUpperCase()}`);
 }
 
 /** Decode the token for Travis to use. */

test/karma.conf.js

@@ -92,7 +92,7 @@ module.exports = (config) => {
   });
 
   if (process.env['TRAVIS']) {
-    let buildId = `TRAVIS #${process.env.TRAVIS_BUILD_NUMBER} (${process.env.TRAVIS_BUILD_ID})`;
+    const buildId = `TRAVIS #${process.env.TRAVIS_BUILD_NUMBER} (${process.env.TRAVIS_BUILD_ID})`;
 
     if (process.env['TRAVIS_PULL_REQUEST'] === 'false' &&
         process.env['MODE'] === "browserstack_required") {
@@ -102,21 +102,21 @@ module.exports = (config) => {
     }
 
     // The MODE variable is the indicator of what row in the test matrix we're running.
-    // It will look like <platform>_<alias>, where platform is one of 'saucelabs' or 'browserstack',
-    // and alias is one of the keys in the CI configuration variable declared in
-    // browser-providers.ts.
-    let [platform, alias] = process.env.MODE.split('_');
+    // It will look like <platform>_<target>, where platform is one of 'saucelabs', 'browserstack'
+    // or 'travis'. The target is a reference to different collections of browsers that can run
+    // in the previously specified platform.
+    const [platform, target] = process.env.MODE.split('_');
 
     if (platform === 'saucelabs') {
       config.sauceLabs.build = buildId;
       config.sauceLabs.tunnelIdentifier = process.env.TRAVIS_JOB_ID;
     } else if (platform === 'browserstack') {
       config.browserStack.build = buildId;
       config.browserStack.tunnelIdentifier = process.env.TRAVIS_JOB_ID;
-    } else {
+    } else if (platform !== 'travis') {
       throw new Error(`Platform "${platform}" unknown, but Travis specified. Exiting.`);
     }
 
-    config.browsers = platformMap[platform][alias.toLowerCase()];
+    config.browsers = platformMap[platform][target.toLowerCase()];
   }
 };

test/remote_browsers.json

@@ -1,8 +1,8 @@
 {
-  "ChromeNoSandbox": {
-    "base": "Chrome",
+  "ChromeHeadless_CI": {
+    "base": "ChromeHeadless",
     "flags": [
-      "--no-sandbox"
+      "--window-size=1024,768"
     ]
   },
   "Chrome_1024x768": {