TEST_ENV_NUMBER value incorrect for first process

[scottbartell]

The TEST_ENV_NUMBER env var is being set to 1 for the first process when parallel_tests expects it to be blank. This is causing issues because parallel_tests doesn't create a database whereTEST_ENV_NUMBER=1 when you run rake parallel:setup.

Here's where TEST_ENV_NUMBER is being set to 1: https://github.com/serpapi/turbo_tests/blob/master/lib/turbo_tests/runner.rb#L112

Here's the docs for parallel_tests: https://github.com/grosser/parallel_tests#add-to-configdatabaseyml

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I'd be happy to address this but I'm curious if we think turbo_tests should be changed to set the value to empty string like parallel_tests expects or if we should figure out if we can configure parallel_tests to use the value 1 for the first process and just add some documentation on how to do that?

[ilyazub]

Hi @scottbartell, parallel_tests can set TEST_ENV_NUMBER to 1 for the first process by adding the --first-is-1 CLI option.

Ref: lib/parallel_tests/cli.rb:252.

parallel_tests --first-is-1

The random blog post that describes a similar problem.

Let me know if it solves the problem you've encountered.

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PS. Can you tell me about your usage workflow of parallel_tests and turbo_tests?

[louim]

The solution if you want to use parallel_tests to do database creation (what I assume you done because I hit the same problem). PARALLEL_TEST_FIRST_IS_1=true rake parallel:setup or the first database will be named my_database_test instead of my_database_test1 like this gem expect. I think it should be mentioned in the readme. I can do a PR if you like.

[ilyazub]

@louim Yes, please update the documentation in PR.

[Mayurifag]

@louim have you already made request? It seems, repo is missing information about TEST_ENV_NUMBER at all.

[louim]

@Mayurifag sorry, I totally forgot to do a PR. I'll try to draft one this week, but if you want to create one, go ahead!

[gutoarraes]

if I understand correctly, all we're missing here is an update to the README to mention the --first-is-1 flag needed to name the first instance of TEST_ENV_NUMBER . Let me know if that's the case and I can write a quick PR for this.

[phyzical]

@gutoarraes i can confirm that @louim suggestion works for us PARALLEL_TEST_FIRST_IS_1=true rake parallel:setup

i think it should be part of the docs imo