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2 changes: 1 addition & 1 deletion railties/lib/rails/generators/app_base.rb
Original file line number Diff line number Diff line change
Expand Up @@ -181,7 +181,7 @@ def database_gemfile_entry
def webserver_gemfile_entry
return [] if options[:skip_puma]
comment = 'Use Puma as the app server'
GemfileEntry.new('puma', nil, comment)
GemfileEntry.new('puma', '~> 3.0', comment)
end

def include_all_railties?
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5 changes: 5 additions & 0 deletions railties/test/generators/app_generator_test.rb
Original file line number Diff line number Diff line change
Expand Up @@ -366,6 +366,11 @@ def test_generator_without_skips
end
end

def test_generator_defaults_to_puma_version
run_generator [destination_root]
assert_gem "puma", "'~> 3.0'"
end

def test_generator_if_skip_puma_is_given
run_generator [destination_root, "--skip-puma"]
assert_no_file "config/puma.rb"
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