Modernize gem.

.github/workflows/test-coverage.yaml

@@ -34,8 +34,10 @@ jobs:
       timeout-minutes: 5
       run: bundle exec bake test
 
-    - uses: actions/upload-artifact@v3
+    - uses: actions/upload-artifact@v4
       with:
+        include-hidden-files: true
+        if-no-files-found: error
         name: coverage-${{matrix.os}}-${{matrix.ruby}}
         path: .covered.db
 
@@ -50,7 +52,7 @@ jobs:
         ruby-version: "3.3"
         bundler-cache: true
 
-    - uses: actions/download-artifact@v3
+    - uses: actions/download-artifact@v4
 
     - name: Validate coverage
       timeout-minutes: 5

.rubocop.yml

@@ -47,3 +47,7 @@ Layout/EmptyLinesAroundModuleBody:
 
 Style/FrozenStringLiteralComment:
   Enabled: true
+
+Style/StringLiterals:
+  Enabled: true
+  EnforcedStyle: double_quotes

bake/metrics/capture.rb

@@ -1,12 +1,12 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2023, by Samuel Williams.
+# Copyright, 2023-2024, by Samuel Williams.
 
 # Enable capturing metrics.
 def capture
-	ENV['METRICS_BACKEND'] = 'metrics/backend/capture'
-	require 'metrics'
+	ENV["METRICS_BACKEND"] = "metrics/backend/capture"
+	require "metrics"
 end
 
 # Generate a list of metrics that have been captured.

config/external.yaml

@@ -1,3 +1,3 @@
 metrics-backend-datadog:
   url: https://github.com/socketry/metrics-backend-datadog.git
-  command: bundle exec rspec
+  command: bundle exec sus

config/sus.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2022, by Samuel Williams.
+# Copyright, 2022-2024, by Samuel Williams.
 
-ENV['METRICS_BACKEND'] ||= 'metrics/backend/console'
+ENV["METRICS_BACKEND"] ||= "metrics/backend/console"
 
-require 'covered/sus'
+require "covered/sus"
 include Covered::Sus

examples/testing/app.rb

@@ -3,15 +3,15 @@
 # Released under the MIT License.
 # Copyright, 2024, by Samuel Williams.
 
-require 'metrics/provider'
+require "metrics/provider"
 
 class MyApplication
 	def work
 		# ...
 	end
 
 	Metrics::Provider(self) do
-		WORK_METRIC = Metrics.metric('my_application.work.count', :counter, description: 'Work counter')
+		WORK_METRIC = Metrics.metric("my_application.work.count", :counter, description: "Work counter")
 
 		def work
 			WORK_METRIC.emit(1)

examples/testing/test.rb

@@ -4,12 +4,12 @@
 # Released under the MIT License.
 # Copyright, 2024, by Samuel Williams.
 
-ENV['METRICS_BACKEND'] ||= 'metrics/backend/test'
+ENV["METRICS_BACKEND"] ||= "metrics/backend/test"
 
-require_relative 'app'
+require_relative "app"
 
 describe MyApplication do
-	it 'should emit metrics' do
+	it "should emit metrics" do
 		expect(MyApplication::WORK_METRIC).to receive(:emit).with(1)
 		MyApplication.new.work
 	end

gems.rb

@@ -3,7 +3,7 @@
 # Released under the MIT License.
 # Copyright, 2021-2024, by Samuel Williams.
 
-source 'https://rubygems.org'
+source "https://rubygems.org"
 
 gemspec
 

lib/metrics.rb

@@ -1,8 +1,8 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2022, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require_relative 'metrics/version'
-require_relative 'metrics/provider'
-require_relative 'metrics/tags'
+require_relative "metrics/version"
+require_relative "metrics/provider"
+require_relative "metrics/tags"

lib/metrics/backend.rb

@@ -1,15 +1,15 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'console/event/failure'
+require "console/event/failure"
 
 module Metrics
 	module Backend
 		# Require a specific trace backend.
 		def self.require_backend(env = ENV)
-			if backend = env['METRICS_BACKEND']
+			if backend = env["METRICS_BACKEND"]
 				begin
 					require(backend)
 				rescue LoadError => error

lib/metrics/backend/capture.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2023, by Samuel Williams.
+# Copyright, 2023-2024, by Samuel Williams.
 
-require 'console'
-require_relative '../metric'
+require "console"
+require_relative "../metric"
 
 module Metrics
 	module Backend

lib/metrics/backend/console.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'console'
-require_relative '../metric'
+require "console"
+require_relative "../metric"
 
 module Metrics
 	module Backend

lib/metrics/backend/test.rb

@@ -1,10 +1,10 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2022, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'console'
-require_relative '../metric'
+require "console"
+require_relative "../metric"
 
 module Metrics
 	module Backend

lib/metrics/provider.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require_relative 'backend'
+require_relative "backend"
 
 module Metrics
 	# @returns [Boolean] Whether there is an active backend.

lib/metrics/tags.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2022, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
 module Metrics
 	module Tags

lib/metrics/version.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
 module Metrics
 	VERSION = "0.10.2"

metrics.gemspec

@@ -10,8 +10,8 @@ Gem::Specification.new do |spec|
 	spec.authors = ["Samuel Williams"]
 	spec.license = "MIT"
 
-	spec.cert_chain  = ['release.cert']
-	spec.signing_key = File.expand_path('~/.gem/release.pem')
+	spec.cert_chain  = ["release.cert"]
+	spec.signing_key = File.expand_path("~/.gem/release.pem")
 
 	spec.homepage = "https://github.com/socketry/metrics"
 
@@ -20,7 +20,7 @@ Gem::Specification.new do |spec|
 		"source_code_uri" => "https://github.com/socketry/metrics.git",
 	}
 
-	spec.files = Dir.glob(['{bake,lib}/**/*', '*.md'], File::FNM_DOTMATCH, base: __dir__)
+	spec.files = Dir.glob(["{bake,lib}/**/*", "*.md"], File::FNM_DOTMATCH, base: __dir__)
 
 	spec.required_ruby_version = ">= 3.1"
 end

test/metrics.rb

@@ -1,9 +1,9 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2021-2023, by Samuel Williams.
+# Copyright, 2021-2024, by Samuel Williams.
 
-require 'metrics'
+require "metrics"
 
 class MyClass
 	def my_method(argument)
@@ -15,7 +15,7 @@ def my_method(argument)
 end
 
 Metrics::Provider(MyClass) do
-	MYCLASS_CALL_COUNT = Metrics.metric('my_class.call', :counter, description: 'Call counter.')
+	MYCLASS_CALL_COUNT = Metrics.metric("my_class.call", :counter, description: "Call counter.")
 
 	def my_method(argument)
 		MYCLASS_CALL_COUNT.emit(1, tags: ["foo", "bar"])

test/metrics/backend.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2022-2023, by Samuel Williams.
+# Copyright, 2024, by Samuel Williams.
 
 require "metrics/backend"
 require "json"

test/metrics/backend/capture.rb

@@ -1,13 +1,13 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2023, by Samuel Williams.
+# Copyright, 2023-2024, by Samuel Williams.
 
-require 'metrics/provider'
+require "metrics/provider"
 
 describe Metrics::Provider do
 	let(:document_root) {File.expand_path(".capture", __dir__)}
-	let(:environment) {{'METRICS_BACKEND' => nil}}
+	let(:environment) {{"METRICS_BACKEND" => nil}}
 
 	it "runs without metrics" do
 		pid = Process.spawn(environment, "bundle", "exec", "bake", "run", chdir: document_root)
@@ -57,7 +57,7 @@
 			"description" => be == "My metric",
 			"unit" => be == "seconds",
 			"values" => be == [1],
-			"tags" => be == ['environment:test'],
+			"tags" => be == ["environment:test"],
 			"sample_rates" => be == [1.0]
 		)
 	end

test/metrics/metric.rb

@@ -1,16 +1,16 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2023, by Samuel Williams.
+# Copyright, 2023-2024, by Samuel Williams.
 
-require 'metrics/metric'
+require "metrics/metric"
 
 describe Metrics::Metric do
 	let(:metric) {subject.new("my_metric", "gauge", "My metric", "seconds")}
 
 	it "can emit a metric" do
 		expect do
-			metric.emit(1, tags: ['environment:test'])
+			metric.emit(1, tags: ["environment:test"])
 		end.to raise_exception(NotImplementedError)
 	end
 end

test/metrics/provider.rb

@@ -1,13 +1,13 @@
 # frozen_string_literal: true
 
 # Released under the MIT License.
-# Copyright, 2022, by Samuel Williams.
+# Copyright, 2022-2024, by Samuel Williams.
 
-unless ENV['METRICS_BACKEND']
+unless ENV["METRICS_BACKEND"]
 	abort "No backend specified, tests will fail!"
 end
 
-require 'metrics/provider'
+require "metrics/provider"
 
 describe Metrics::Provider do
 	let(:my_class) {Class.new}