Added an integration test for proxied accessory using Busybox and netcat

test/integration/proxied_accessory_test.rb

@@ -0,0 +1,63 @@
+require_relative "integration_test"
+
+class ProxiedAccessoryTest < IntegrationTest
+  test "boot, stop, start, restart, logs, remove" do
+    @app = "app_with_proxied_accessory"
+
+    kamal :deploy
+
+    kamal :accessory, :boot, :netcat
+    assert_accessory_running :netcat
+    assert_netcat_is_up
+
+    kamal :accessory, :stop, :netcat
+    assert_accessory_not_running :netcat
+    assert_netcat_not_found
+
+    kamal :accessory, :start, :netcat
+    assert_accessory_running :netcat
+    assert_netcat_is_up
+
+    kamal :accessory, :restart, :netcat
+    assert_accessory_running :netcat
+    assert_netcat_is_up
+
+    kamal :accessory, :remove, :netcat, "-y"
+    assert_accessory_not_running :netcat
+    assert_netcat_not_found
+  end
+
+  private
+    def assert_accessory_running(name)
+      assert_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
+    end
+
+    def assert_accessory_not_running(name)
+      assert_no_match /registry:4443\/busybox:1.36.0   "sh -c 'echo \\"Start/, accessory_details(name)
+    end
+
+    def accessory_details(name)
+      kamal :accessory, :details, name, capture: true
+    end
+
+    def assert_netcat_is_up
+      response = netcat_response
+      debug_response_code(response, "200")
+      assert_equal "200", response.code
+    end
+
+    def assert_netcat_not_found
+      response = netcat_response
+      debug_response_code(response, "404")
+      assert_equal "404", response.code
+    end
+
+    def netcat_response
+      uri = URI.parse("http://127.0.0.1:12345/up")
+      http = Net::HTTP.new(uri.host, uri.port)
+      request = Net::HTTP::Get.new(uri)
+      request["Host"] = "netcat"
+
+      http.request(request)
+    end
+end