25.2.0

What's Changed

• fix: improve viewport resizing logic with retry mechanism by @tltv in #2170
• fix: use standard base64 encoding for data URIs in screenshot reports by @Artur- in #2169
• chore: Update version to 10.2 by @caalador in #2175
• feat: Add loadtest to testbench by @caalador in #2176
• fix: Fix TestSignalEnvironment to prevent flaky signal tests by @Artur- in #2178
• chore: enhance HarFilter and HarToK6Converter filtering by @tltv in #2177
• chore: remove unnecessary vaadin-prereleases from loadtest by @tltv in #2180
• chore: fix loadtest version by @caalador in #2179
• feat: resolve java executable by @caalador in #2181
• chore: add runLoadTests profile for load tests by @tltv in #2183
• fix: csv to handle , and " in input by @caalador in #2194
• test: Grid should be visible on page load by @caalador in #2187
• chore: move loadtest-helper content to loadtest-support by @caalador in #2188
• feat: Enable custom response checks by @caalador in #2191
• chore: log experimental warning by @caalador in #2192
• feat: Add custom thresholds by @caalador in #2190
• fix: make start-server generic by @caalador in #2185
• fix: Failing test should fail recording by @caalador in #2186
• fix: maker stacktrace readable by @caalador in #2195
• feat: Load profile definition by @caalador in #2193
• feat: add playwright record goal by @caalador in #2184
• chore: upgrade selenium version to 4.43.0 by @ZheSun88 in #2196
• feat: collect results into json by @caalador in #2197
• fix: use scan classloader to load application classes by @mcollovati in #2174
• feat: Report as html by @caalador in #2201
• test: wait for sauce labs by @caalador in #2205
• test: update response expectation by @caalador in #2211
• fix: add universal status check by @caalador in #2207
• fix: ignore browser paths by @caalador in #2212
• fix: handle hilla csrf header by @caalador in #2213
• feat: add new playwrightHelper with context by @caalador in #2214
• fix: resolve node IDs at runtime in k6 scripts by @tltv in #2216
• test: add missing vaadin-testbench-loadtest unit tests by @tltv in #2215
• feat: Enable giving checks allowed failure rate by @caalador in #2217
• fix: Update playwright exception message by @caalador in #2220
• feat: add ITs for load testing with k6 by @tltv in #2218
• test: resolve dynamic request indices by @tltv in #2222
• test: fix record-run-testbench assert by @tltv in #2223
• feat: add setupProxy method by @caalador in #2224
• chore: upgrade spring boot 4.1.0-RC1 by @ZheSun88 in #2225
• test: add Grid filter to loadtest demo by @tltv in #2226
• feat: Add warmup run by @caalador in #2228
• fix: rebuild form-encoded POST bodies from postData.params by @tltv in #2229
• fix: guard response.body in generated k6 by @tltv in #2231
• chore: update k6 warmup command by @tltv in #2234
• fix: correct utf characters in k6-summary.js by @tltv in #2235
• fix: Use same default for mojos by @caalador in #2240
• fix: anchor gridKeys regex to grid item rows in generated k6 by @tltv in #2242
• fix: stop JUnit 5 leak from junit6 modules by @mcollovati in #2244
• chore: upgrade selenium version to 4.44.0 by @ZheSun88 in #2245
• chore: upgrade license-checker to 3.0.2 by @vaadin-bot in #2251
• fix: Verify it to check content not step number by @caalador in #2257
• fix: ignore parens inside think-time sleeps by @tltv in #2258
• fix: loadtest plugin it repository by @caalador in #2256
• chore: satisfy artifact deployment metadata requirements by @mshabarov in #2259
• chore: bump project version to 25.2-SNAPSHOT by @ZheSun88 in #2260
• refactor: deprecate $ and $view in favor of find and findInView by @mcollovati in #2261
• chore: upgrade selenium version to 4.45.0 by @ZheSun88 in #2262
• Replace pull_request_target with pull_request in CI workflow by @manolo in #2252
• fix: prevent StackOverflowError converting large mSync values by @tltv in #2269
• ci: run integration tests against local selenium/standalone-chrome by @Artur- in #2232
• chore: upgrade license-checker to 3.1.0 by @ZheSun88 in #2270

Full Changelog: 10.1.0...25.2.0

25.2.0-rc1

What's Changed

• chore: bump project version to 25.2-SNAPSHOT by @ZheSun88 in #2260
• refactor: deprecate $ and $view in favor of find and findInView by @mcollovati in #2261
• chore: upgrade selenium version to 4.45.0 by @ZheSun88 in #2262

Full Changelog: 25.2.0-beta1...25.2.0-rc1

25.2.0-beta1

TestBench pre-release for Vaadin 25.2.

Note: Since Vaadin 25.2, we have aligned Testbench project version with Vaadin version. The APIs stay as compatible as they are in Testbench 10.2.

Full changelog: 10.1...25.2.0-beta1

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🆕 Load testing for Vaadin apps

TestBench 25.2 introduces a brand-new load testing tool that turns your existing TestBench (or Playwright) E2E tests into realistic k6 load tests.
Drive your app at scale using the same user-journey code you already maintain — no separate scripting required.

How it works: the toolchain starts your app, runs your E2E test through a recording proxy, captures the browser ↔ server traffic as HAR, and converts it into a k6 script that handles Vaadin specifics (JSESSIONID, CSRF/Hilla CSRF tokens, dynamic UI/Push IDs, dynamic node IDs).

Highlights of the feature:

• Maven plugin (testbench-converter-plugin) with k6:record, k6:convert, k6:run, plus start-server / stop-server mojos.
• Recording from TestBench and Playwright E2E tests.
• Realistic user simulation — automatic, HAR-timing-aware think-time injection between page loads and interactions.
• Declarative load profiles (ramp-up / steady / ramp-down) instead of fixed virtual users counts.
• Custom thresholds (p95 / p99 / abortOnFail) and custom response checks with per-check allowed failure rate.
• Optional warm-up run before the measured load test to prime caches and JIT.
• HTML report and structured JSON results for CI dashboards.
• CSV-backed value collections for parameterized inputs (random users, IDs, etc.).
• Auto-resolution of the Java executable and the k6 binary; commercial license check.

📖 Documentation: https://vaadin.com/docs/next/flow/testing/load-testing

⏯️ Example project setup: https://github.com/vaadin/bookstore-example/tree/v25-loadtest

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Other improvements since 10.1

Fixes (UI Unit testing)

• Gradle + Quarkus + multi-module: use the scan classloader to load application route classes, fixing ClassCastException when running the standard test task #2174
• Signals: stabilize TestSignalEnvironment so effect dispatch and result notifications run synchronously on the test thread with proper session-lock handling, eliminating flakiness in signal-driven UI tests #2178

Dependency upgrades

• Selenium 4.44.0 (#2245)
• Spring Boot 4.1.0-RC1 (#2225) — aligns with the Vaadin 25.2 platform.

9.5.6

What's Changed

• chore: upgrade selenium version to 4.43.0 (9.5) by @ZheSun88 in #2200
• chore: upgrade selenium to 4.44.0 (9.6) (#2248) (CP: 9.5) by @vaadin-bot in #2250

Full Changelog: 9.5.5...9.5.6

10.1.2

What's Changed

• fix: use scan classloader to load application classes (#2174) (CP: 10.1) by @vaadin-bot in #2203
• chore: upgrade selenium version to 4.44.0 (#2245) (CP: 10.1) by @vaadin-bot in #2246

Full Changelog: 10.1.1...10.1.2

10.0.6

What's Changed

• chore: upgrade selenium version to 4.44.0 (#2245) (CP: 10.0) by @vaadin-bot in #2247

Full Changelog: 10.0.5...10.0.6

9.6.1

What's Changed

• chore: upgrade selenium version to 4.43.0 (9.5) (#2200) (CP: 9.6) by @vaadin-bot in #2202
• chore: upgrade selenium to 4.44.0 (9.6) by @ZheSun88 in #2248

Full Changelog: 9.6.0...9.6.1

10.2.0-alpha5

What's Changed

Load Testing Maven Plugin changes:

• feat: Add warmup run by @caalador in #2228
• fix: rebuild form-encoded POST bodies from postData.params by @tltv in #2229
• fix: guard response.body in generated k6 by @tltv in #2231
• fix: correct utf characters in k6-summary.js by @tltv in #2235
• fix: Use same default for mojos by @caalador in #2240
• fix: anchor gridKeys regex to grid item rows in generated k6 by @tltv in #2242

Full Changelog: 10.2.0-alpha4...10.2.0-alpha5

10.2.0-alpha4

What's Changed

• fix: use scan classloader to load application classes in #2174

Load Testing Maven Plugin changes:

• feat: collect results into json in #2197
• feat: Report as html in #2201
• fix: add universal status check in #2207
• fix: ignore browser paths in #2212
• fix: handle hilla csrf header in #2213
• feat: add new playwrightHelper with context in #2214
• fix: resolve node IDs at runtime in k6 scripts in #2216
• feat: Enable giving checks allowed failure rate in #2217
• fix: Update playwright exception message in #2220
• feat: add setupProxy method by in #2224

Full Changelog: 10.2.0-alpha3...10.2.0-alpha4

10.0.5

What's Changed

• chore: upgrade selenium version to 4.43.0 (10.0) by @ZheSun88 in #2199
• fix: use scan classloader to load application classes (#2174) (CP: 10.0) by @vaadin-bot in #2204

Full Changelog: 10.0.4...10.0.5