From 51ed353fa48afe1a8a5233fe96489b73aca36bf1 Mon Sep 17 00:00:00 2001
From: Michael Lange <dingoeatingfuzz@gmail.com>
Date: Tue, 20 Jun 2023 20:21:37 -0700
Subject: [PATCH] Merge pull request #17626 from hashicorp/f/ui-test-splitting

[UI, CI] Test splitting
---
 .github/workflows/test-ui.yml | 60 +++++++++++++++++++++++++++++------
 ui/package.json               |  4 ++-
 ui/testem.js                  | 26 ---------------
 3 files changed, 54 insertions(+), 36 deletions(-)

diff --git a/.github/workflows/test-ui.yml b/.github/workflows/test-ui.yml
index 87d3b401258f..62f810d7d3dd 100644
--- a/.github/workflows/test-ui.yml
+++ b/.github/workflows/test-ui.yml
@@ -36,22 +36,64 @@ on:
       - 'website/**'
 
 jobs:
-  test-ui:
+  pre-test:
     runs-on: ubuntu-latest
+    timeout-minutes: 30
+    defaults:
+      run:
+        working-directory: ui
+    outputs:
+      nonce: ${{ steps.nonce.outputs.nonce }}
     steps:
       - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
       - name: yarn install
-        run: cd ui && yarn install --frozen-lockfile
+        run: yarn install --frozen-lockfile
       - name: lint:js
-        run: cd ui && yarn run lint:js
+        run: yarn run lint:js
       - name: lint:hbs
-        run: cd ui && yarn run lint:hbs
-      - name: Ember tests
+        run: yarn run lint:hbs
+      - id: nonce
+        name: nonce
+        run: echo "nonce=${{ github.run_id }}-$(date +%s)" >> "$GITHUB_OUTPUT"
+
+  tests:
+    needs:
+      - pre-test
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    defaults:
+      run:
+        working-directory: ui
+    strategy:
+      matrix:
+        partition: [1, 2, 3, 4]
+        split: [4]
+    steps:
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+      - name: yarn install
+        run: yarn install --frozen-lockfile
+      - name: ember exam
+        env:
+          PERCY_TOKEN: ${{ secrets.PERCY_TOKEN }}
+          PERCY_PARALLEL_NONCE: ${{ needs.pre-test.outputs.nonce }}
+        run: yarn exam:parallel --split=${{ matrix.split }} --partition=${{ matrix.partition }}
+  finalize:
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    defaults:
+      run:
+        working-directory: ui
+    needs:
+      - pre-test
+      - tests
+    steps:
+      - uses: actions/checkout@8e5e7e5ab8b370d6c329ec480221332ada57f0ab # v3.5.2
+      - name: yarn install
+        run: yarn install --frozen-lockfile
+      - name: finalize
         env:
           PERCY_TOKEN: ${{ secrets.PERCY_TOKEN }}
-        run: mkdir -p /tmp/test-reports && cd ui && yarn exam
-      - uses: actions/upload-artifact@0b7f8abb1508181956e8e162db84b466c27e18ce # v3.1.2
-        with:
-          path: "/tmp/test-reports"
+          PERCY_PARALLEL_NONCE: ${{ needs.pre-test.outputs.nonce }}
+        run: yarn percy build:finalize
 permissions:
   contents: read
diff --git a/ui/package.json b/ui/package.json
index af255ac8e458..9320f6ed0b2f 100644
--- a/ui/package.json
+++ b/ui/package.json
@@ -20,7 +20,9 @@
     "build-storybook": "STORYBOOK=true ember build && build-storybook -s dist",
     "storybook": "STORYBOOK=true start-storybook -p 6006 -s dist",
     "test": "npm-run-all lint test:*",
-    "exam": "ember exam --split=4 --parallel",
+    "exam": "percy exec -- ember exam --split=4 --parallel",
+    "exam:parallel": "percy exec --parallel -- ember exam",
+    "percy": "percy",
     "test:ember": "percy exec -- ember test",
     "local:qunitdom": "ember test --server --query=dockcontainer",
     "local:exam": "ember exam --server --load-balance --parallel=4",
diff --git a/ui/testem.js b/ui/testem.js
index 0d47b107fe77..c77c62b55bd6 100644
--- a/ui/testem.js
+++ b/ui/testem.js
@@ -1,10 +1,5 @@
 'use strict';
 
-const MultiReporter = require('testem-multi-reporter');
-const TapReporter = require('testem/lib/reporters/tap_reporter');
-const XunitReporter = require('testem/lib/reporters/xunit_reporter');
-const fs = require('fs');
-
 const config = {
   test_page: 'tests/index.html?hidepassed',
   disable_watching: true,
@@ -32,25 +27,4 @@ const config = {
   },
 };
 
-if (process.env.CI) {
-  const reporters = [
-    {
-      ReporterClass: TapReporter,
-      args: [false, null, { get: () => false }],
-    },
-    {
-      ReporterClass: XunitReporter,
-      args: [
-        false,
-        fs.createWriteStream('/tmp/test-reports/ui.xml'),
-        { get: () => false },
-      ],
-    },
-  ];
-
-  const multiReporter = new MultiReporter({ reporters });
-
-  config.reporter = multiReporter;
-}
-
 module.exports = config;