adding smoke tests layer

mostly testing ipv6 connectivity now

.gitlab-ci.yml

@@ -121,6 +121,22 @@ regression tests:
     - bundle install
   script:
     - bundle exec rake regression_tests
+smoke_tests:
+  image: "ruby:3.3"
+  variables:
+    BUNDLE_WITHOUT: lint:assorted
+    CI: 1
+    COVERAGE_KEY: "$RUBY_ENGINE-$RUBY_VERSION-smoke-tests"
+  artifacts:
+    paths:
+      - coverage/
+  stage: test
+  before_script:
+    - host example.com
+    - apt-get update && apt-get install -y libmagic-dev shared-mime-info
+    - bundle install
+  script:
+    - bundle exec rake smoke_tests
 
 coverage:
   coverage: '/Coverage: \d+.\d+\%/'

.rubocop.yml

@@ -14,6 +14,7 @@ AllCops:
     - regression_tests/**/*.rb
     - integration_tests/**/*.rb
     - standalone_tests/**/*.rb
+    - smoke_tests/**/*.rb
     - Rakefile
     - httpx.gemspec
     - profiler/**/*

Rakefile

@@ -24,6 +24,13 @@ Rake::TestTask.new(:regression_tests) do |t|
   t.warning = false
 end
 
+desc "smoke tests for core features not in main tests"
+Rake::TestTask.new(:smoke_tests) do |t|
+  t.libs = %w[lib test]
+  t.pattern = "smoke_tests/**/*_test.rb"
+  t.warning = false
+end
+
 RUBY_MAJOR_MINOR = RUBY_VERSION.split(".").first(2).join(".")
 
 begin

smoke_tests/happy_eyeballs_test.rb

@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+require "test_helper"
+require "support/http_helpers"
+
+# https://test-ipv6.com/
+class HappyEyeballsTest < Minitest::Test
+  include HTTPHelpers
+
+  IPV6_HOST = "https://ipv6.test-ipv6.com"
+  IPV4_HOST = "https://ipv4.test-ipv6.com"
+
+  def test_happy_eyeballs_prefer_ipv6
+    response = HTTPX.get(IPV6_HOST)
+    verify_status(response, 200)
+    peer_address = response.peer_address
+    assert peer_address.ipv6?
+  end
+
+  def test_happy_eyeballs_prefer_ipv4
+    response = HTTPX.get(IPV4_HOST)
+    verify_status(response, 200)
+    peer_address = response.peer_address
+    assert peer_address.ipv4?
+  end
+end