Added ruby_memcheck

Author: ankane

.github/workflows/build.yml

@@ -17,3 +17,8 @@ jobs:
         run: brew install libomp
       - run: bundle exec rake vendor:platform
       - run: bundle exec rake test
+
+      - if: ${{ matrix.valgrind }}
+        run: |
+          sudo apt-get update && sudo apt-get install valgrind
+          bundle exec rake test:valgrind

Gemfile

@@ -8,6 +8,7 @@ gem "csv"
 gem "daru"
 gem "matrix"
 gem "rover-df", platform: [:mri, :windows]
+gem "ruby_memcheck", require: false
 
 # TODO remove when numo-narray > 0.9.2.1 is released
 if Gem.win_platform?

Rakefile

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