Extend ErbTemplateHelper with trim_mode parameter

[krin-san]

Checklist

• I've run bundle exec rspec from the root directory to see all new and existing tests pass
• I've followed the fastlane code style and run bundle exec rubocop -a to ensure the code style is valid
• I've read the Contribution Guidelines
• I've updated the documentation if necessary.

Motivation and Context

Current implementation of ErbTemplateHelper doesn't allow to pass trim_mode parameter to Erb initializer. It makes this class impossible to use with more or less advanced erb files eliminating empty lines. There is a workaround - Erb trim_mode could be defined globally, but it's not the way I'd like to follow.

A simple test is added to check if trim_mode parameter are actually used. Other tests in the same file was slightly changed to keep file syntax consistent.

Description

ErbTemplateHelper now have a new parameter - trim_mode - which is passed to ErbalT object and then passed to Erb initializer.

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[googlebot]

CLAs look good, thanks!

[janpio]

Hi @krin-san, looks good.

Totally naive question: Where is this code actually used? When would you actually use this new option?

[krin-san]

@janpio, already using it on few our projects to generate email messages for release candidates. Without this trim_mode option it looks impossible to keep template file readable while preserving empty lines where they needs to be.

p.s.: I even forgot about this PR - so old it is

[janpio]

Yeah, then let's just merge this.

[janpio]

Yeah, then let's just merge this.

[fastlane-bot]

Hey @krin-san 👋

Thank you for your contribution to fastlane and congrats on getting this pull request merged 🎉
The code change now lives in the master branch, however it wasn't released to RubyGems yet.
We usually ship about once a week, and your PR will be included in the next one.

Please let us know if this change requires an immediate release by adding a comment here 👍
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[fastlane-bot]

Congratulations! 🎉 This was released as part of fastlane 2.82.0 🚀