We Don't Merge Red: Shifting E2E Tests Left in Mobile Development

This story was originally published on HackerNoon at: https://hackernoon.com/we-dont-merge-red-shifting-e2e-tests-left-in-mobile-development.
A practical look at moving mobile E2E tests into pull requests, using Detox, CI gates, impact analysis, and QA review to catch bugs earlier.
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We made red e2e tests block merges. Tests now get fixed in the PR that broke them, not two weeks later during the release scramble. Getting there took impact analysis, parallelization, a stable main branch, and four months of convincing people. A PR run went from 60 minutes to 12, critical production bugs dropped by roughly half, and releases stopped being an event.