Run lib tests in CI

deployment.rb

@@ -364,3 +364,7 @@ def pegasus_dir(*paths)
 def shared_dir(*dirs)
   deploy_dir('shared', *dirs)
 end
+
+def lib_dir(*dirs)
+  deploy_dir('lib', *dirs)
+end

lib/Rakefile

@@ -0,0 +1,12 @@
+require 'rake/testtask'
+
+desc 'Run tests for lib directory'
+task :test do
+  puts 'starting test task'
+  Rake::TestTask.new do |t|
+    t.warning = false
+    t.test_files = FileList["test/**/test_*.rb"]
+  end
+end
+
+task :default => :test

lib/cdo/test_run_utils.rb

@@ -66,4 +66,10 @@ def self.run_shared_tests
       end
     end
   end
+
+  def self.run_lib_tests
+    Dir.chdir(lib_dir) do
+      RakeUtils.rake_stream_output 'test'
+    end
+  end
 end

lib/rake/test.rake

@@ -31,6 +31,11 @@ namespace :test do
     TestRunUtils.run_shared_tests
   end
 
+  desc 'Runs lib tests.'
+  task :lib do
+    TestRunUtils.run_lib_tests
+  end
+
   namespace :changed do
     desc 'Runs apps tests if apps might have changed from staging.'
     task :apps do
@@ -60,12 +65,19 @@ namespace :test do
       end
     end
 
-    task all: [:apps, :dashboard, :pegasus, :shared]
+    desc 'Runs lib tests if lib might have changed from staging.'
+    task :lib do
+      run_tests_if_changed('lib', ['lib/**/*']) do
+        TestRunUtils.run_lib_tests
+      end
+    end
+
+    task all: [:apps, :dashboard, :pegasus, :shared, :lib]
   end
 
   task changed: ['changed:all']
 
-  task all: [:apps, :dashboard, :pegasus, :shared]
+  task all: [:apps, :dashboard, :pegasus, :shared, :lib]
 end
 task test: ['test:changed']