[UPTIME] Migrate settings e2e tests to a BDD approach

[mdelapenya]

We want to rewrite this test https://github.com/elastic/kibana/blob/master/x-pack/test/functional/apps/uptime/settings.ts using BDD (Gherkin + Cucumber).

We decided not to start with Cypress for now, although it's in the plans.

[elasticmachine]

Pinging @elastic/uptime (Team:uptime)

[mdelapenya]

Running the tests

1. Prepare the runtime dependencies: Kibana & Elasticsearch, from $KIBANA_ROOT/x-pack directory:
   • $ JAVA_HOME="" node scripts/functional_tests_server Discovered JAVA_HOME is not unset when using Functional Test Server #63501 while testing this
2. Add FTR (Functional Test Runner) tags support (https://www.elastic.co/guide/en/kibana/current/development-functional-tests.html)
3. In another terminal, from $KIBANA_ROOT/x-pack, run the tests of interest:
   • $ node scripts/functional_test_runner --include-tag=uptime-settings

Although the 3 tests pass, I can see this error:

         │ debg Find.findByCssSelector('[data-test-subj="heartbeat-indices-input-loaded"]') with timeout=5000
         │ERROR browser[SEVERE] http://localhost:5620/api/uptime/snapshot/count?dateRangeStart=now-15m&dateRangeEnd=now - Failed to load resource: the server responded with a status of 500 (Internal Server Error)
         │ERROR browser[SEVERE] http://localhost:5620/bundles/uptime.bundle.js 17129:20 Error: Internal Server Error
         │          at Fetch._callee3$ (http://localhost:5620/bundles/commons.bundle.js:12109:23)
         │          at tryCatch (http://localhost:5620/bundles/kbn-ui-shared-deps/kbn-ui-shared-deps.js:372675:40)
         │          at Generator.invoke [as _invoke] (http://localhost:5620/bundles/kbn-ui-shared-deps/kbn-ui-shared-deps.js:372901:22)
         │          at Generator.prototype.<computed> [as next] (http://localhost:5620/bundles/kbn-ui-shared-deps/kbn-ui-shared-deps.js:372727:21)
         │          at asyncGeneratorStep (http://localhost:5620/bundles/commons.bundle.js:11846:103)
         │          at _next (http://localhost:5620/bundles/commons.bundle.js:11848:194)

@elastic/uptime does this log error seems familiar to you?

[tylersmalley]

In another terminal:

$ node scripts/functional_test

You actually want to use node scripts/functional_test_runner as this uses the server setup through the previous command.

[mdelapenya]

We are going to put this on hold until we have BDD support in FTR. See #63892

[mdelapenya]

I think this can be closed for now