Intermittent test failures when running UI-heavy apps in JUnit, environment or timing issue?

[kayde886]

Hi everyone,

I’m running into some flaky JUnit tests when they involve UI-heavy or media-rich apps. The same tests sometimes pass locally but fail in CI, usually around setup or teardown phases, which makes me think it could be related to timing, resource loading, or environment differences.

While trying this with something like a [capcut app] style workflow that relies on media processing and UI rendering, the inconsistencies became more noticeable.

Has anyone here dealt with similar instability in JUnit tests? Do you usually solve it by adding waits, mocking resource-heavy parts, or changing how the test environment is initialized?

[sormuras]

I removed the link from your question - as it wasn't obvious in plain text to where it linked to. In addition, I saw you posted two similar issues very recently in other discussion boards ...

... but I assume you're searching for insights here, and not page visits.

Looking into how others solve(d) those kind of issues might help. For example https://www.selenium.dev/documentation/webdriver/waits/ for browser-based tests.