End-to-end tests for core Grafana

This guide explains how to conduct end-to-end tests for the Grafana repository. Ensure that you've read the generalized E2E document.

Commands

yarn e2e: Creates an isolated grafana-server home under \<repo-root>/e2e/tmp with provisioned data sources and dashboards. This makes a local copy of the build binary and frontend assets from your repository root so you need to have a built backend and frontend. The server starts on port 3001 so it does not conflict with your normal dev server.
yarn e2e:debug: Same as previous but runs the tests in Chrome and doesn't shut down after completion.
yarn e2e:dev: Same as previous but does not run any tests on startup. It lets you pick a test first.

If you already have a Grafana instance running, you can provide a specific URL by setting the BASE_URL environment variable:

BASE_URL=http://172.0.10.2:3333 yarn e2e

The previous commands use some utils scripts under <repo-root>/e2e that you can also use for more control.

./scripts/grafana-server/start-server: This creates a new Grafana server working directory, sets up configuration. and starts the server. It also kills any previously started server that is still running using the pid file at \<repo-root>/scripts/grafana-server/tmp/pid.
./scripts/grafana-server/wait-for-grafana: waits for $HOST and $PORT to be available. Per default localhost and 3001.
./e2e/run-suite <debug|dev|noarg>: Starts Cypress in different modes.

You can find integration tests at \<repo-root>/e2e/suite\<x>/specs.