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yamlのパーサらしい (そこから)

$ ruby -v -rpsych -e 'p Psych.safe_load(File.read("config/database.yml"))'
ruby 3.1.0preview1 (2021-11-09 master 5a3b2e6141) [x86_64-linux]
/home/zunda/.rbenv/versions/3.1.0-preview1/lib/ruby/3.1.0/psych/visitors/to_ruby.rb:430:in `visit_Psych_Nodes_Alias': Unknown alias: default (Psych::BadAlias)
from /home/zunda/.rbenv/versions/3.1.0-preview1/lib/ruby/3.1.0/psych/visitors/visitor.rb:30:in `visit'

うむ

$ ruby -v -rpsych -e 'p Psych.safe_load(File.read("config/database.yml"))'
ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-linux]
/home/zunda/.rbenv/versions/3.0.2/lib/ruby/3.0.0/psych/visitors/to_ruby.rb:428:in `visit_Psych_Nodes_Alias': Unknown alias: default (Psych::BadAlias)
from /home/zunda/.rbenv/versions/3.0.2/lib/ruby/3.0.0/psych/visitors/visitor.rb:30:in `visit'

あれ？

$ ruby -v -rpsych -ryaml -rerb -e 'p YAML.load(ERB.new(File.read("config/database.yml")).result)'
ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-linux]
{"default"=>{"adapter"=>"postgresql", "pool"=>5, "timeout"=>5000, "encoding"=>"unicode", "sslmode"=>"prefer"}, "development"=>{"adapter"=>"postgresql", "pool"=>5, "timeout"=>5000, "encoding"=>"unicode", "sslmode"=>"prefer", "database"=>"mastodon_development", "username"=>nil, "password"=>nil, "host"=>nil, "port"=>nil}, "test"=>{"adapter"=>"postgresql", "pool"=>5, "timeout"=>5000, "encoding"=>"unicode", "sslmode"=>"prefer", "database"=>"mastodon_test", "username"=>nil, "password"=>nil, "host"=>nil, "port"=>nil}, "production"=>{"adapter"=>"postgresql", "pool"=>5, "timeout"=>5000, "encoding"=>"unicode", "sslmode"=>"prefer", "database"=>"mastodon_production", "username"=>"mastodon", "password"=>nil, "host"=>"localhost", "port"=>5432, "prepared_statements"=>true}}

こうか

$ ruby -v -rpsych -ryaml -rerb -e 'p YAML.load(ERB.new(File.read("config/database.yml")).result)'
ruby 3.1.0preview1 (2021-11-09 master 5a3b2e6141) [x86_64-linux]
/home/zunda/.rbenv/versions/3.1.0-preview1/lib/ruby/3.1.0/psych/visitors/to_ruby.rb:430:in `visit_Psych_Nodes_Alias': Unknown alias: default (Psych::BadAlias)
from /home/zunda/.rbenv/versions/3.1.0-preview1/lib/ruby/3.1.0/psych/visitors/visitor.rb:30:in `visit'

ういうい

ruby-3.1.1-preview1でpsychのv4.0.0タグをrequireするとエラーになる。v3.3.2タグなら読める。

v4.0.0でもYAML.loadではなくYAML.unsafe_loadなら読める。なるほど。

Psychにプルリクチャンスと思ってたのにRailsになりそうな時の顔してる

$ bundle exec rspec
warning: parser/current is loading parser/ruby31, which recognizes
warning: 3.1.0-dev-compliant syntax, but you are running 3.1.0.
warning: please see https://github.com/whitequark/parser#compatibility-with-ruby-mri.

Randomized with seed 29672
3252/3252 |============================================== 100 ===============================================>| Time: 00:06:38
:
Finished in 6 minutes 38 seconds (files took 8.78 seconds to load)
3252 examples, 0 failures, 24 pending

Randomized with seed 29672
Coverage report generated for RSpec to /home/zunda/c/src/github.com/zunda/mastodon/coverage. 14839 / 22530 LOC (65.86%) covered.

:tada: