Added ruby_memcheck

Author: ankane

.github/workflows/build.yml

@@ -9,6 +9,7 @@ jobs:
         include:
           - ruby: "4.0"
             os: ubuntu-24.04
+            valgrind: true
           - ruby: 3.4
             os: ubuntu-24.04
           - ruby: 3.3
@@ -25,3 +26,8 @@ jobs:
           bundler-cache: true
       - run: MAKE="make -j$(getconf _NPROCESSORS_ONLN)" bundle exec rake compile
       - run: bundle exec rake test
+
+      - if: ${{ matrix.valgrind }}
+        run: |
+          sudo apt-get update && sudo apt-get install valgrind
+          bundle exec rake test:valgrind

Gemfile

@@ -5,6 +5,7 @@ gemspec
 gem "rake"
 gem "rake-compiler"
 gem "minitest"
+gem "ruby_memcheck", require: false
 
 # https://github.com/ruby/openssl/issues/952
 gem "openssl" if RUBY_PLATFORM =~ /darwin/

Rakefile

@@ -1,10 +1,16 @@
 require "bundler/gem_tasks"
 require "rake/testtask"
 require "rake/extensiontask"
+require "ruby_memcheck"
 
-Rake::TestTask.new do |t|
+test_config = lambda do |t|
   t.pattern = "test/**/*_test.rb"
 end
+Rake::TestTask.new(&test_config)
+
+namespace :test do
+  RubyMemcheck::TestTask.new(:valgrind, &test_config)
+end
 
 task default: :test
 

test/shift_scheduling_sat_test.rb

@@ -2,6 +2,8 @@
 
 class ShiftSchedulingSatTest < Minitest::Test
   def test_shift_scheduling_sat
+    skip if valgrind?
+
     num_employees = 8
     num_weeks = 3
     shifts = %w[O M A N]

test/test_helper.rb

@@ -34,4 +34,8 @@ def assert_output(expected)
   def stress?
     ENV["STRESS"]
   end
+
+  def valgrind?
+    ENV["RUBY_MEMCHECK_RUNNING"]
+  end
 end