Add support for ruby 3.0.x

[alachaum]

• Refactor positional/keyword arguments to support ruby 3.0.x
• Separate test environments for ruby 2.5/2.6 / 2.7 / 3.x
• Skip Rails-specific tests when Rails in not in context

[vovimayhem]

Oh great!!!! I was actually bumping my head with this one when upgrading an app to ruby 3... what else is needed?

[vovimayhem]

I'm still getting an error when setting up a queue on Ruby 3.0.3, right where we're checking if the queue exists or not:

require 'cloudtasker/backend/google_cloud_task'
require 'cloudtasker/config'
Cloudtasker::Backend::GoogleCloudTask.setup_queue(name: "default")

Throws:

/usr/local/bundle/gems/google-cloud-tasks-1.5.1/lib/google/cloud/tasks/v2beta3/cloud_tasks_client.rb:523:in `create_queue': wrong number of arguments (given 1, expected 2) (ArgumentError)
/usr/local/bundle/gems/google-gax-1.8.2/lib/google/gax/api_callable.rb:369:in `rescue in block in retryable': GaxError Exception occurred in retry method that was not classified as transient, caused by 5:Queue does not exist. If you just created the queue, wait at least a minute for the queue to initialize.. debug_error_string:{"created":"@1641166932.545747842","description":"Error received from peer ipv4:142.250.65.138:443","file":"src/core/lib/surface/call.cc","file_line":1063,"grpc_message":"Queue does not exist. If you just created the queue, wait at least a minute for the queue to initialize.","grpc_status":5} (Google::Gax::RetryError)
/usr/local/bundle/gems/grpc-1.42.0/src/ruby/lib/grpc/generic/active_call.rb:29:in `check_status': 5:Queue does not exist. If you just created the queue, wait at least a minute for the queue to initialize.. debug_error_string:{"created":"@1641166932.545747842","description":"Error received from peer ipv4:142.250.65.138:443","file":"src/core/lib/surface/call.cc","file_line":1063,"grpc_message":"Queue does not exist. If you just created the queue, wait at least a minute for the queue to initialize.","grpc_status":5} (GRPC::NotFound)

This is the call that is throwing the error:

cloudtasker/lib/cloudtasker/backend/google_cloud_task.rb

Lines 32 to 37 in 22ee4fe

	client.create_queue(
	client.location_path(config.gcp_project_id, config.gcp_location_id),
	name: full_queue_name,
	retry_config: { max_attempts: retries },
	rate_limits: { max_concurrent_dispatches: concurrency }
	)

And this is the method being called on google-cloud-tasks gem:

https://github.com/googleapis/google-cloud-ruby/blob/0615bcf5c99deb027f465e91081931654ef57a62/google-cloud-tasks/lib/google/cloud/tasks/v2beta3/cloud_tasks_client.rb#L523-L534

[vovimayhem]

The specs are not catching this because of rspec/rspec-mocks#1425 (comment)

[alachaum]

Thanks for the testing @vovimayhem ! I was actually planning to do another round of testing over the next couple of days. Ideally I want to merge this PR this week and make a release candidate.

[alachaum]

@vovimayhem release candidate v0.13.rc1 has been pushed to rubygems! Feel free to provide feedback on the original issue

[vovimayhem]

I tried to make the specs detect that, but had no luck - I guess that rspec has yet to get the hash vs keywords thing right...