From d06b0633d3e8af760fa0a7d287d9ff4a6cee36d4 Mon Sep 17 00:00:00 2001
From: Gregor Vostrak <gregor@solidtime.io>
Date: Tue, 10 Feb 2026 13:21:05 +0100
Subject: [PATCH] add sharding for e2e tests in CI

---
 .github/workflows/playwright.yml | 47 ++++++++++++++++++++++++++++----
 playwright.config.ts             |  2 +-
 2 files changed, 43 insertions(+), 6 deletions(-)

diff --git a/.github/workflows/playwright.yml b/.github/workflows/playwright.yml
index 98432491..c7b19cd1 100644
--- a/.github/workflows/playwright.yml
+++ b/.github/workflows/playwright.yml
@@ -6,6 +6,11 @@ jobs:
   test:
     runs-on: ubuntu-latest
     timeout-minutes: 60
+    strategy:
+      fail-fast: false
+      matrix:
+        shardIndex: [1, 2, 3, 4]
+        shardTotal: [4]
 
     services:
       mailpit:
@@ -67,16 +72,48 @@ jobs:
         run: npx playwright install --with-deps
 
       - name: "Run Playwright tests"
-        run: npx playwright test
+        run: npx playwright test --shard=${{ matrix.shardIndex }}/${{ matrix.shardTotal }}
         env:
           PLAYWRIGHT_BASE_URL: 'http://127.0.0.1:8000'
           MAILPIT_BASE_URL: 'http://localhost:8025'
 
-      - name: "Upload test results"
+      - name: "Upload blob report"
         uses: actions/upload-artifact@v4
         if: always()
         with:
-          name: test-results
-          path: test-results/
-          retention-days: 30
+          name: blob-report-${{ matrix.shardIndex }}
+          path: blob-report/
+          retention-days: 7
 
+  merge-reports:
+    if: always()
+    needs: [test]
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout code"
+        uses: actions/checkout@v4
+
+      - name: "Setup node"
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20.x'
+
+      - name: "Install dependencies"
+        run: npm ci
+
+      - name: "Download blob reports"
+        uses: actions/download-artifact@v4
+        with:
+          path: all-blob-reports
+          pattern: blob-report-*
+          merge-multiple: true
+
+      - name: "Merge reports"
+        run: npx playwright merge-reports --reporter html ./all-blob-reports
+
+      - name: "Upload merged HTML report"
+        uses: actions/upload-artifact@v4
+        with:
+          name: playwright-report
+          path: playwright-report/
+          retention-days: 30
diff --git a/playwright.config.ts b/playwright.config.ts
index f588a60a..36d7381a 100644
--- a/playwright.config.ts
+++ b/playwright.config.ts
@@ -20,7 +20,7 @@ export default defineConfig({
     /* Run tests in parallel */
     workers: 4,
     /* Reporter to use. See https://playwright.dev/docs/test-reporters */
-    reporter: process.env.CI ? 'line' : 'html',
+    reporter: process.env.CI ? 'blob' : 'html',
     /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
     use: {
         /* Base URL to use in actions like `await page.goto('/')`. */