diff --git a/.github/workflows/test-go.yml b/.github/workflows/test-go.yml
index a227cb5..0a8f867 100644
--- a/.github/workflows/test-go.yml
+++ b/.github/workflows/test-go.yml
@@ -35,3 +35,5 @@ jobs:
       - run: go mod download
       - run: go build ./...
       - run: go fmt ./...
+      - run: go vet ./...
+      - run: go test ./test/... -run TestOptimalPortfolioScenario
diff --git a/.github/workflows/test-java17.yml b/.github/workflows/test-java17.yml
index 4988642..e6b1be0 100644
--- a/.github/workflows/test-java17.yml
+++ b/.github/workflows/test-java17.yml
@@ -33,4 +33,4 @@ jobs:
           distribution: temurin
           java-version: '17'
           cache: maven
-      - run: ./mvnw compile -DskipTests
+      - run: ./mvnw test -q -Dtest=OptimalPortfolioScenarioTest
diff --git a/.github/workflows/test-java8.yml b/.github/workflows/test-java8.yml
index e69b4de..6ae6e82 100644
--- a/.github/workflows/test-java8.yml
+++ b/.github/workflows/test-java8.yml
@@ -33,4 +33,4 @@ jobs:
           distribution: temurin
           java-version: '8'
           cache: maven
-      - run: ./mvnw compile -DskipTests
+      - run: ./mvnw test -q -Dtest=OptimalPortfolioScenarioTest
diff --git a/.github/workflows/test-php.yml b/.github/workflows/test-php.yml
index c14aa41..1595187 100644
--- a/.github/workflows/test-php.yml
+++ b/.github/workflows/test-php.yml
@@ -32,3 +32,5 @@ jobs:
         with:
           php-version: '8.5'
       - run: composer install --no-interaction --prefer-dist
+      - run: find src -name '*.php' -exec php -l {} +
+      - run: ./vendor/bin/phpunit tests/OptimalPortfolioScenarioTest.php
diff --git a/.github/workflows/test-python.yml b/.github/workflows/test-python.yml
index 26d115d..12ec909 100644
--- a/.github/workflows/test-python.yml
+++ b/.github/workflows/test-python.yml
@@ -32,4 +32,6 @@ jobs:
         with:
           python-version-file: 'python/pyproject.toml'
           cache: pip
-      - run: pip install .
+      - run: pip install ".[dev]"
+      - run: find src -name '*.py' -exec python -m py_compile {} +
+      - run: python -m pytest tests/test_optimal_portfolio_scenario.py
diff --git a/.github/workflows/test-ruby.yml b/.github/workflows/test-ruby.yml
index 81724d3..674fb93 100644
--- a/.github/workflows/test-ruby.yml
+++ b/.github/workflows/test-ruby.yml
@@ -33,3 +33,5 @@ jobs:
           ruby-version: '3.3'
           bundler-cache: true
           working-directory: ruby
+      - run: find lib -name '*.rb' -exec ruby -c {} +
+      - run: bundle exec rspec spec/optimal_portfolio_scenario_spec.rb
diff --git a/.github/workflows/test-scala.yml b/.github/workflows/test-scala.yml
index e9e56c8..a50d885 100644
--- a/.github/workflows/test-scala.yml
+++ b/.github/workflows/test-scala.yml
@@ -36,3 +36,4 @@ jobs:
           cache: sbt
       - uses: sbt/setup-sbt@af116cce31c00823d3903ce687f9cda3a4f19f1b # v1
       - run: sbt compile
+      - run: sbt "testOnly folio.codinginterview.OptimalPortfolioScenario"
diff --git a/.github/workflows/test-typescript.yml b/.github/workflows/test-typescript.yml
index e6ccbec..e4d8ff8 100644
--- a/.github/workflows/test-typescript.yml
+++ b/.github/workflows/test-typescript.yml
@@ -36,3 +36,4 @@ jobs:
           cache-dependency-path: typescript/package-lock.json
       - run: npm ci
       - run: npm run build
+      - run: npx vitest run tests/optimalPortfolioScenario.test.ts
diff --git a/.gitignore b/.gitignore
index 0f4f038..5326591 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
 .claude/settings.local.json
-.serena/
-.claude/settings.local.json
 .claude/worktrees/
+.serena/
diff --git a/README.md b/README.md
index 50db604..e68dc6d 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,7 @@
 
 ## Release
 
-Kick the [release action](https://github.com/folio-sec/terraform-provider-zoom/actions/workflows/release.yml) manually, then release.
-
-## Contribution
-
-See also [CONTRIBUTING.md](CONTRIBUTING.md).
+Kick the [release action](https://github.com/folio-sec/wrap-api-example/actions/workflows/release.yml) manually, then release.
 
 ### DCO Sign-Off Methods