angular · josephperrott · Nov 19, 2018 · Nov 12, 2018
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -149,6 +149,9 @@ jobs:
     environment:
       SAUCE_USERNAME: "angular-ci"
       SAUCE_ACCESS_KEY: "9b988f434ff8-fbca-8aa4-4ae3-35442987"
+      # Note: This number should not be too high because otherwise we might run into
+      # a rate limit exception.
+      KARMA_PARALLEL_BROWSERS: 2
     steps:
     - *checkout_code
     - *restore_cache

diff --git a/package.json b/package.json
@@ -112,6 +112,7 @@
     "karma-chrome-launcher": "^2.2.0",
     "karma-firefox-launcher": "^1.0.1",
     "karma-jasmine": "^1.1.2",
+    "karma-parallel": "^0.3.0",
     "karma-sauce-launcher": "^1.2.0",
     "karma-sourcemap-loader": "^0.3.7",
     "magic-string": "^0.22.4",

diff --git a/test/karma.conf.js b/test/karma.conf.js
@@ -93,13 +93,28 @@ module.exports = config => {
   });
 
   if (process.env['CIRCLECI']) {
-    const instanceIndex = Number(process.env['CIRCLE_NODE_INDEX']);
-    const maxParallelInstances = Number(process.env['CIRCLE_NODE_TOTAL']);
+    const containerInstanceIndex = Number(process.env['CIRCLE_NODE_INDEX']);
+    const maxParallelContainerInstances = Number(process.env['CIRCLE_NODE_TOTAL']);
     const tunnelIdentifier =
-        `angular-material-${process.env['CIRCLE_BUILD_NUM']}-${instanceIndex}`;
+        `angular-material-${process.env['CIRCLE_BUILD_NUM']}-${containerInstanceIndex}`;
     const buildIdentifier = `circleci-${tunnelIdentifier}`;
     const testPlatform = process.env['TEST_PLATFORM'];
 
+    // This defines how often a given browser should be launched in the same CircleCI
+    // container. This is helpful if we want to shard tests across the same browser.
+    const parallelBrowserInstances = Number(process.env['KARMA_PARALLEL_BROWSERS']) || 1;
+
+    // In case there should be multiple instances of the browsers, we need to set up the
+    // the karma-parallel plugin.
+    if (parallelBrowserInstances > 1) {
+      config.frameworks.unshift('parallel');
+      config.plugins.push(require('karma-parallel'));
+      config.parallelOptions = {
+        executors: parallelBrowserInstances,
+        shardStrategy: 'round-robin',
+      }
+    }
+
     if (testPlatform === 'browserstack') {
       config.browserStack.build = buildIdentifier;
       config.browserStack.tunnelIdentifier = tunnelIdentifier;
@@ -110,11 +125,11 @@ module.exports = config => {
 
     const platformBrowsers = platformMap[testPlatform];
     const browserInstanceChunks = splitBrowsersIntoInstances(
-        platformBrowsers, maxParallelInstances);
+        platformBrowsers, maxParallelContainerInstances);
 
-    // Configure Karma to launch the browsers that belong to the given test platform
-    // and instance.
-    config.browsers = browserInstanceChunks[instanceIndex];
+    // Configure Karma to launch the browsers that belong to the given test platform and
+    // container instance.
+    config.browsers = browserInstanceChunks[containerInstanceIndex];
   }
 };
 

diff --git a/yarn.lock b/yarn.lock
@@ -1014,6 +1014,11 @@ abbrev@1:
   resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.1.1.tgz#f8f2c887ad10bf67f634f005b6987fed3179aac8"
   integrity sha512-nne9/IiQ/hzIhY6pdDnbBtz7DjPTKrY00P/zvPSm5pOFkl6xuGrGnXn/VtTNNfNtAfZ9/1RtehkszU9qcTii0Q==
 
+[email protected]:
+  version "1.0.9"
+  resolved "https://registry.yarnpkg.com/abbrev/-/abbrev-1.0.9.tgz#91b4792588a7738c25f35dd6f63752a2f8776135"
+  integrity sha1-kbR5JYinc4wl813W9jdSovh3YTU=
+
 accepts@~1.3.4, accepts@~1.3.5:
   version "1.3.5"
   resolved "https://registry.yarnpkg.com/accepts/-/accepts-1.3.5.tgz#eb777df6011723a3b14e8a72c0805c8e86746bd2"
@@ -1461,6 +1466,11 @@ async-limiter@~1.0.0:
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
   integrity sha512-jp/uFnooOiO+L211eZOoSyzpOITMXx1rBITauYykG3BRYPu8h0UcxsPNB04RR5vo4Tyz3+ay17tR6JVf9qzYWg==
 
+[email protected], async@^1.3.0, async@^1.5.2:
+  version "1.5.2"
+  resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
+  integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
+
 [email protected]:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/async/-/async-2.0.1.tgz#b709cc0280a9c36f09f4536be823c838a9049e25"
@@ -1475,11 +1485,6 @@ [email protected]:
   dependencies:
     lodash "^4.14.0"
 
-async@^1.3.0, async@^1.5.2:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/async/-/async-1.5.2.tgz#ec6a61ae56480c0c3cb241c95618e20892f9672a"
-  integrity sha1-7GphrlZIDAw8skHJVhjiCJL5Zyo=
-
 async@^2.0.0, async@^2.0.1, async@^2.1.2, async@^2.3.0, async@^2.4.0, async@^2.5.0, async@~2.6.0:
   version "2.6.1"
   resolved "https://registry.yarnpkg.com/async/-/async-2.6.1.tgz#b245a23ca71930044ec53fa46aa00a3e87c6a610"
@@ -3720,6 +3725,18 @@ escape-string-regexp@^1.0.0, escape-string-regexp@^1.0.2, escape-string-regexp@^
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
   integrity sha1-G2HAViGQqN/2rjuyzwIAyhMLhtQ=
 
+[email protected]:
+  version "1.8.1"
+  resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.8.1.tgz#5a5b53af4693110bebb0867aa3430dd3b70a1018"
+  integrity sha1-WltTr0aTEQvrsIZ6o0MN07cKEBg=
+  dependencies:
+    esprima "^2.7.1"
+    estraverse "^1.9.1"
+    esutils "^2.0.2"
+    optionator "^0.8.1"
+  optionalDependencies:
+    source-map "~0.2.0"
+
 [email protected], escodegen@^1.6.1:
   version "1.11.0"
   resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.11.0.tgz#b27a9389481d5bfd5bec76f7bb1eb3f8f4556589"
@@ -3737,6 +3754,11 @@ espree@^2.2.3:
   resolved "https://registry.yarnpkg.com/espree/-/espree-2.2.5.tgz#df691b9310889402aeb29cc066708c56690b854b"
   integrity sha1-32kbkxCIlAKuspzAZnCMVmkLhUs=
 
+[email protected], esprima@^2.7.1:
+  version "2.7.3"
+  resolved "https://registry.yarnpkg.com/esprima/-/esprima-2.7.3.tgz#96e3b70d5779f6ad49cd032673d1c312767ba581"
+  integrity sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=
+
 [email protected], esprima@^3.1.3:
   version "3.1.3"
   resolved "https://registry.yarnpkg.com/esprima/-/esprima-3.1.3.tgz#fdca51cee6133895e3c88d535ce49dbff62a4633"
@@ -3754,6 +3776,11 @@ espurify@^1.6.0:
   dependencies:
     core-js "^2.0.0"
 
+estraverse@^1.9.1:
+  version "1.9.3"
+  resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-1.9.3.tgz#af67f2dc922582415950926091a4005d29c9bb44"
+  integrity sha1-r2fy3JIlgkFZUJJgkaQAXSnJu0Q=
+
 estraverse@^4.1.0, estraverse@^4.2.0:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/estraverse/-/estraverse-4.2.0.tgz#0dee3fed31fcd469618ce7342099fc1afa0bdb13"
@@ -4732,6 +4759,17 @@ glob@^4.3.1:
     minimatch "^2.0.1"
     once "^1.3.0"
 
+glob@^5.0.15:
+  version "5.0.15"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-5.0.15.tgz#1bc936b9e02f4a603fcc222ecf7633d30b8b93b1"
+  integrity sha1-G8k2ueAvSmA/zCIuz3Yz0wuLk7E=
+  dependencies:
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "2 || 3"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 glob@^7.0.0, glob@^7.0.3, glob@^7.0.5, glob@^7.0.6, glob@^7.1.1, glob@^7.1.2, glob@~7.1.1:
   version "7.1.3"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.3.tgz#3960832d3f1574108342dafd3a67b332c0969df1"
@@ -5323,7 +5361,7 @@ hammerjs@^2.0.8:
   resolved "https://registry.yarnpkg.com/hammerjs/-/hammerjs-2.0.8.tgz#04ef77862cff2bb79d30f7692095930222bf60f1"
   integrity sha1-BO93hiz/K7edMPdpIJWTAiK/YPE=
 
-handlebars@^4.0.2:
+handlebars@^4.0.1, handlebars@^4.0.2:
   version "4.0.12"
   resolved "https://registry.yarnpkg.com/handlebars/-/handlebars-4.0.12.tgz#2c15c8a96d46da5e266700518ba8cb8d919d5bc5"
   integrity sha512-RhmTekP+FZL+XNhwS1Wf+bTTZpdLougwt5pcgA1tuz6Jcx0fpH/7z0qd71RKnZHBCxIRBHfBOnio4gViPemNzA==
@@ -6356,6 +6394,26 @@ [email protected], isstream@~0.1.2:
   resolved "https://registry.yarnpkg.com/isstream/-/isstream-0.1.2.tgz#47e63f7af55afa6f92e1500e690eb8b8529c099a"
   integrity sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=
 
+istanbul@^0.4.5:
+  version "0.4.5"
+  resolved "https://registry.yarnpkg.com/istanbul/-/istanbul-0.4.5.tgz#65c7d73d4c4da84d4f3ac310b918fb0b8033733b"
+  integrity sha1-ZcfXPUxNqE1POsMQuRj7C4Azczs=
+  dependencies:
+    abbrev "1.0.x"
+    async "1.x"
+    escodegen "1.8.x"
+    esprima "2.7.x"
+    glob "^5.0.15"
+    handlebars "^4.0.1"
+    js-yaml "3.x"
+    mkdirp "0.5.x"
+    nopt "3.x"
+    once "1.x"
+    resolve "1.1.x"
+    supports-color "^3.1.0"
+    which "^1.1.1"
+    wordwrap "^1.0.0"
+
 isurl@^1.0.0-alpha5:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isurl/-/isurl-1.0.0.tgz#b27f4f49f3cdaa3ea44a0a5b7f3462e6edc39d67"
@@ -6424,7 +6482,7 @@ js-tokens@^4.0.0:
   resolved "https://registry.yarnpkg.com/js-tokens/-/js-tokens-4.0.0.tgz#19203fb59991df98e3a287050d4647cdeaf32499"
   integrity sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ==
 
-js-yaml@^3.7.0, js-yaml@^3.9.0:
+js-yaml@3.x, js-yaml@^3.7.0, js-yaml@^3.9.0:
   version "3.12.0"
   resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.12.0.tgz#eaed656ec8344f10f527c6bfa1b6e2244de167d1"
   integrity sha512-PIt2cnwmPfL4hKNwqeiuz4bKfnzHTBv6HyVgjahA6mPLwPDzjDWrplJBMjHUFxku/N3FlmrbyPclad+I+4mJ3A==
@@ -6652,6 +6710,14 @@ karma-jasmine@^1.1.2:
   resolved "https://registry.yarnpkg.com/karma-jasmine/-/karma-jasmine-1.1.2.tgz#394f2b25ffb4a644b9ada6f22d443e2fd08886c3"
   integrity sha1-OU8rJf+0pkS5rabyLUQ+L9CIhsM=
 
+karma-parallel@^0.3.0:
+  version "0.3.0"
+  resolved "https://registry.yarnpkg.com/karma-parallel/-/karma-parallel-0.3.0.tgz#2f5502fb824528647c935be18655567c84c013a9"
+  integrity sha512-tGRXTTv2ebttWUBj/nPiKDkqZP/GaOFuO/MhOqC01TKtixZoh/9gzaAUCU8OQa1mfGokhw0zuumid2ybS6lXEg==
+  dependencies:
+    istanbul "^0.4.5"
+    lodash "^4.17.11"
+
 [email protected]:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/karma-requirejs/-/karma-requirejs-1.1.0.tgz#fddae2cb87d7ebc16fb0222893564d7fee578798"
@@ -7229,7 +7295,7 @@ lodash@^3.10.1:
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-3.10.1.tgz#5bf45e8e49ba4189e17d482789dfd15bd140b7b6"
   integrity sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y=
 
-lodash@^4.0.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.15.0, lodash@^4.16.6, lodash@^4.17.10, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.5.0, lodash@^4.8.0, lodash@~4.17.10:
+lodash@^4.0.0, lodash@^4.13.1, lodash@^4.14.0, lodash@^4.15.0, lodash@^4.16.6, lodash@^4.17.10, lodash@^4.17.11, lodash@^4.17.4, lodash@^4.17.5, lodash@^4.2.1, lodash@^4.3.0, lodash@^4.5.0, lodash@^4.8.0, lodash@~4.17.10:
   version "4.17.11"
   resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.11.tgz#b39ea6229ef607ecd89e2c8df12536891cac9b8d"
   integrity sha512-cQKh8igo5QUhZ7lg38DYWAxMvjSAKG0A8wGSVimP07SIUEK2UO+arSRKbRZWtelMtN5V0Hkwh5ryOto/SshYIg==
@@ -7675,20 +7741,20 @@ mimic-response@^1.0.0:
   resolved "https://registry.yarnpkg.com/mimic-response/-/mimic-response-1.0.1.tgz#4923538878eef42063cb8a3e3b0798781487ab1b"
   integrity sha512-j5EctnkH7amfV/q5Hgmoal1g2QHFJRraOtmx0JpIqkxhBhI/lJSl1nMpQ45hVarwNETOoWEimndZ4QK0RHxuxQ==
 
+"minimatch@2 || 3", minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4, minimatch@~3.0.2:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  dependencies:
+    brace-expansion "^1.1.7"
+
 minimatch@^2.0.1:
   version "2.0.10"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-2.0.10.tgz#8d087c39c6b38c001b97fca7ce6d0e1e80afbac7"
   integrity sha1-jQh8OcazjAAbl/ynzm0OHoCvusc=
   dependencies:
     brace-expansion "^1.0.0"
 
-minimatch@^3.0.2, minimatch@^3.0.3, minimatch@^3.0.4, minimatch@~3.0.2:
-  version "3.0.4"
-  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
-  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
-  dependencies:
-    brace-expansion "^1.1.7"
-
 minimatch@~0.2.11:
   version "0.2.14"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-0.2.14.tgz#c74e780574f63c6f9a090e90efbe6ef53a6a756a"
@@ -8070,7 +8136,7 @@ nodemailer@^2.5.0:
     nodemailer-smtp-transport "2.7.2"
     socks "1.1.9"
 
-"nopt@2 || 3":
+"nopt@2 || 3", [email protected]:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
   integrity sha1-xkZdvwirzU2zWTF/eaxopkayj/k=
@@ -8284,7 +8350,7 @@ on-headers@^1.0.0, on-headers@~1.0.1:
   resolved "https://registry.yarnpkg.com/on-headers/-/on-headers-1.0.1.tgz#928f5d0f470d49342651ea6794b0857c100693f7"
   integrity sha1-ko9dD0cNSTQmUepnlLCFfBAGk/c=
 
-once@^1.3.0, once@^1.3.1, once@^1.4.0:
+once@1.x, once@^1.3.0, once@^1.3.1, once@^1.4.0:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
   integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
@@ -9826,6 +9892,11 @@ resolve-url@^0.2.1:
   resolved "https://registry.yarnpkg.com/resolve-url/-/resolve-url-0.2.1.tgz#2c637fe77c893afd2a663fe21aa9080068e2052a"
   integrity sha1-LGN/53yJOv0qZj/iGqkIAGjiBSo=
 
+[email protected]:
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.1.7.tgz#203114d82ad2c5ed9e8e0411b3932875e889e97b"
+  integrity sha1-IDEU2CrSxe2ejgQRs5ModeiJ6Xs=
+
 resolve@^1.1.6, resolve@^1.1.7, resolve@^1.3.2, resolve@^1.4.0:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.8.1.tgz#82f1ec19a423ac1fbd080b0bab06ba36e84a7a26"
@@ -10545,6 +10616,13 @@ source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.0, source-map@~0.6.1:
   resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
   integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==
 
+source-map@~0.2.0:
+  version "0.2.0"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.2.0.tgz#dab73fbcfc2ba819b4de03bd6f6eaa48164b3f9d"
+  integrity sha1-2rc/vPwrqBm03gO9b26qSBZLP50=
+  dependencies:
+    amdefine ">=0.0.4"
+
 sourcemap-codec@^1.3.0, sourcemap-codec@^1.4.1:
   version "1.4.3"
   resolved "https://registry.yarnpkg.com/sourcemap-codec/-/sourcemap-codec-1.4.3.tgz#0ba615b73ec35112f63c2f2d9e7c3f87282b0e33"
@@ -10991,7 +11069,7 @@ supports-color@^2.0.0:
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-2.0.0.tgz#535d045ce6b6363fa40117084629995e9df324c7"
   integrity sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=
 
-supports-color@^3.2.3:
+supports-color@^3.1.0, supports-color@^3.2.3:
   version "3.2.3"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-3.2.3.tgz#65ac0504b3954171d8a64946b2ae3cbb8a5f54f6"
   integrity sha1-ZawFBLOVQXHYpklGsq48u4pfVPY=
@@ -12109,7 +12187,7 @@ which-module@^2.0.0:
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
   integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
 
-which@1, which@^1.2.1, which@^1.2.14, which@^1.2.9:
+which@1, which@^1.1.1, which@^1.2.1, which@^1.2.14, which@^1.2.9:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
   integrity sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==
@@ -12207,16 +12285,16 @@ [email protected]:
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.2.tgz#b79669bb42ecb409f83d583cad52ca17eaa1643f"
   integrity sha1-t5Zpu0LstAn4PVg8rVLKF+qhZD8=
 
+wordwrap@^1.0.0, wordwrap@~1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
+  integrity sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
+
 wordwrap@~0.0.2:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
   integrity sha1-o9XabNXAvAAI03I0u68b7WMFkQc=
 
-wordwrap@~1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-1.0.0.tgz#27584810891456a4171c8d0226441ade90cbcaeb"
-  integrity sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=
-
 wrap-ansi@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"