Switch test suite from Minitest to RSpec

.github/workflows/regenerate.yml

@@ -23,12 +23,14 @@ jobs:
 
       - name: Set up Ruby
         uses: Homebrew/actions/setup-ruby@df4b09108a1de9d6f995fe68f302b3f68bd6d2ef # 2026.07.20.1
+        with:
+          bundler-cache: true
 
       - name: Run tests
-        run: rake test
+        run: bundle exec rake spec
 
       - name: Build Repology index
-        run: rake repology:build
+        run: bundle exec rake repology:build
 
       - name: Regenerate advisories
         env:

.github/workflows/validate.yml

@@ -40,9 +40,11 @@ jobs:
 
       - name: Set up Ruby
         uses: Homebrew/actions/setup-ruby@df4b09108a1de9d6f995fe68f302b3f68bd6d2ef # 2026.07.20.1
+        with:
+          bundler-cache: true
 
       - name: Run tests
-        run: rake test
+        run: bundle exec rake spec
 
       # RuboCop is not run: the org-synced .rubocop.yml sets
       # `AllCops: Include: ["**/*.rbi"]` which replaces (not extends) the

.gitignore

@@ -0,0 +1,2 @@
+/.bundle/
+/vendor/bundle/

.rspec

@@ -0,0 +1 @@
+--require spec_helper

Gemfile

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+gem "rake"
+gem "rspec"

Gemfile.lock

@@ -0,0 +1,39 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    diff-lcs (1.6.2)
+    rake (13.4.2)
+    rspec (3.13.2)
+      rspec-core (~> 3.13.0)
+      rspec-expectations (~> 3.13.0)
+      rspec-mocks (~> 3.13.0)
+    rspec-core (3.13.6)
+      rspec-support (~> 3.13.0)
+    rspec-expectations (3.13.5)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-mocks (3.13.8)
+      diff-lcs (>= 1.2.0, < 2.0)
+      rspec-support (~> 3.13.0)
+    rspec-support (3.13.7)
+
+PLATFORMS
+  arm64-darwin-25
+  ruby
+
+DEPENDENCIES
+  rake
+  rspec
+
+CHECKSUMS
+  bundler (4.0.17) sha256=214e21431b5665dd2f99df8a5511c6b151d7a72e8015c8b38f8b775b61cbb6c1
+  diff-lcs (1.6.2) sha256=9ae0d2cba7d4df3075fe8cd8602a8604993efc0dfa934cff568969efb1909962
+  rake (13.4.2) sha256=cb825b2bd5f1f8e91ca37bddb4b9aaf345551b4731da62949be002fa89283701
+  rspec (3.13.2) sha256=206284a08ad798e61f86d7ca3e376718d52c0bc944626b2349266f239f820587
+  rspec-core (3.13.6) sha256=a8823c6411667b60a8bca135364351dda34cd55e44ff94c4be4633b37d828b2d
+  rspec-expectations (3.13.5) sha256=33a4d3a1d95060aea4c94e9f237030a8f9eae5615e9bd85718fe3a09e4b58836
+  rspec-mocks (3.13.8) sha256=086ad3d3d17533f4237643de0b5c42f04b66348c28bf6b9c2d3f4a3b01af1d47
+  rspec-support (3.13.7) sha256=0640e5570872aafefd79867901deeeeb40b0c9875a36b983d85f54fb7381c47c
+
+BUNDLED WITH
+  4.0.17

Rakefile

@@ -1,15 +1,10 @@
 # frozen_string_literal: true
 
-require "rake/testtask"
+require "rspec/core/rake_task"
 
-Rake::TestTask.new(:test) do |t|
-  t.libs << "lib"
-  t.libs << "test"
-  t.test_files = FileList["test/**/*_test.rb"]
-  t.warning = false
-end
+RSpec::Core::RakeTask.new(:spec)
 
-task default: :test
+task default: :spec
 
 namespace :repology do
   desc "Build data/repology.json from the Repology API"