diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index fdbebc9adb3..0cd46a03b71 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -12,7 +12,7 @@ concurrency:
 
 jobs:
   typescript:
-    name: typescript
+    name: TypeScript check
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
@@ -31,7 +31,7 @@ jobs:
       - name: tsc on resulting generated files
         run: yarn run tsc --noEmit
   vitest:
-    name: vitest
+    name: Vitest
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v5
@@ -69,7 +69,7 @@ jobs:
           path: coverage/*
   minitest:
     permissions: write-all
-    name: minitest
+    name: Minitest
     runs-on: ubuntu-latest
     env:
       TEST_DATABASE_URL: postgres://postgres:postgres@localhost/intercode_test
@@ -124,8 +124,78 @@ jobs:
         with:
           name: minitest-coverage
           path: coverage/*
+  minitest-system:
+    permissions: write-all
+    name: Minitest system tests
+    runs-on: ubuntu-latest
+    env:
+      TEST_DATABASE_URL: postgres://postgres:postgres@localhost/intercode_test
+      RAILS_ENV: test
+    services:
+      postgres:
+        image: postgres:18
+        env:
+          POSTGRES_PASSWORD: postgres
+        options: >-
+          --health-cmd pg_isready
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 5
+        ports:
+          - 5432:5432
+    steps:
+      - uses: actions/checkout@v5
+      - name: Install libvips42
+        run: sudo apt-get update && sudo apt-get install libvips42
+      - name: Upgrade postgres client utilities
+        run: |
+          sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt $(lsb_release -cs)-pgdg main" > /etc/apt/sources.list.d/pgdg.list'
+          wget -qO- https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo tee /etc/apt/trusted.gpg.d/pgdg.asc &>/dev/null
+          sudo apt-get update
+          sudo apt-get install postgresql-client-18 -y
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+      - name: Read .node-version
+        id: node-version
+        run: echo "node-version=$(cat .node-version)" >> $GITHUB_OUTPUT
+      - name: install node
+        uses: actions/setup-node@v6
+        with:
+          cache: yarn
+          node-version: ${{ steps.node-version.outputs.node-version }}
+      - name: yarn install
+        run: yarn install
+      - name: build
+        run: yarn run build
+      - name: Database setup
+        run: bundle exec rails db:create db:migrate
+      - name: Run tests
+        run: TERM=xterm-color bundle exec rails test:system
+      - name: Publish Test Report
+        uses: mikepenz/action-junit-report@v6
+        if: always() # always run even if the previous step fails
+        with:
+          check_name: "Minitest System Test Report"
+          report_paths: "test/reports/TEST-*.xml"
+          detailed_summary: true
+          skip_success_summary: true
+      - name: Archive HTML test reports
+        uses: actions/upload-artifact@v5
+        if: always()
+        with:
+          name: minitest-system-reports
+          path: test/html_reports/*
+      - name: Archive coverage report
+        uses: actions/upload-artifact@v5
+        if: always()
+        with:
+          name: minitest-system-coverage
+          path: coverage/*
   docker-build:
     runs-on: ubuntu-latest
+    name: Build containers
     steps:
       - uses: actions/checkout@v5
       - name: Read .node-version
@@ -231,23 +301,30 @@ jobs:
           path: doc-site.tar.gz
   coverage-report:
     runs-on: ubuntu-latest
+    name: Test coverage report
     if: github.actor != 'dependabot[bot]'
     needs:
       - vitest
       - minitest
+      - minitest-system
     steps:
       - name: Download Minitest coverage
         uses: actions/download-artifact@v6
         with:
           name: minitest-coverage
           path: minitest-coverage
+      - name: Download Minitest system test coverage
+        uses: actions/download-artifact@v6
+        with:
+          name: minitest-system-coverage
+          path: minitest-system-coverage
       - name: Download Vitest coverage
         uses: actions/download-artifact@v6
         with:
           name: vitest-coverage
           path: vitest-coverage
       - name: Merge coverage reports
-        run: npx cobertura-merge -o merged-coverage.xml package1=minitest-coverage/coverage.xml package2=vitest-coverage/cobertura-coverage.xml
+        run: npx cobertura-merge -o merged-coverage.xml package1=minitest-coverage/coverage.xml package2=vitest-coverage/cobertura-coverage.xml package3=minitest-system-coverage/coverage.xml
       - name: Generate Coverage Report
         uses: clearlyip/code-coverage-report-action@v6
         id: code_coverage_report_action
@@ -264,11 +341,13 @@ jobs:
           path: code-coverage-results.md
   update-release-draft:
     runs-on: ubuntu-latest
+    name: Update release draft
     if: github.event_name == 'push' && github.event.ref == 'refs/heads/main'
     needs:
       - typescript
       - vitest
       - minitest
+      - minitest-system
       - docker-build
       - doc-site
     outputs:
diff --git a/.rubocop.yml b/.rubocop.yml
index 5e93c218724..77b3a2ba263 100644
--- a/.rubocop.yml
+++ b/.rubocop.yml
@@ -1,11 +1,12 @@
 inherit_from: .rubocop_todo.yml
 
-require:
+plugins:
   - rubocop-performance
   - rubocop-rails
   - rubocop-sequel
   - rubocop-factory_bot
   - rubocop-graphql
+  - rubocop-capybara
 
 inherit_gem:
   prettier: rubocop.yml
diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
index fc2ccd6da20..7ca668941c7 100644
--- a/.rubocop_todo.yml
+++ b/.rubocop_todo.yml
@@ -175,7 +175,7 @@ Naming/MethodParameterName:
 # ForbiddenPrefixes: is_, has_, have_
 # AllowedMethods: is_a?
 # MethodDefinitionMacros: define_method, define_singleton_method
-Naming/PredicateName:
+Naming/PredicatePrefix:
   Exclude:
     - 'app/models/registration_policy/bucket.rb'
     - 'app/models/run.rb'
diff --git a/Gemfile b/Gemfile
index 9a95000f874..ed1b3a85863 100644
--- a/Gemfile
+++ b/Gemfile
@@ -144,6 +144,7 @@ group :development do
   gem "rubocop-factory_bot", require: false
   gem "rubocop-graphql", require: false
   gem "rubocop-rspec", require: false
+  gem "rubocop-capybara", require: false
   gem "prettier", "4.0.4"
   gem "prettier_print"
   gem "syntax_tree"
@@ -171,6 +172,9 @@ group :intercode1_import do
 end
 
 group :test do
+  gem "capybara"
+  gem "cuprite"
+  gem "database_cleaner-active_record"
   gem "minitest-spec-rails"
   gem "minitest-reporters"
   gem "minitest-focus"
diff --git a/Gemfile.lock b/Gemfile.lock
index bc78592a5dd..a8f9caa1edb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -112,6 +112,8 @@ GEM
       uri (>= 0.13.1)
     acts_as_list (0.9.16)
       activerecord (>= 3.0)
+    addressable (2.8.8)
+      public_suffix (>= 2.0.2, < 8.0)
     ahoy_matey (5.4.1)
       activesupport (>= 7.1)
       device_detector (>= 1)
@@ -180,13 +182,29 @@ GEM
       acts_as_list
       cadmus
       rails (>= 5.0.0)
+    capybara (3.40.0)
+      addressable
+      matrix
+      mini_mime (>= 0.1.3)
+      nokogiri (~> 1.11)
+      rack (>= 1.6.0)
+      rack-test (>= 0.6.3)
+      regexp_parser (>= 1.5, < 3.0)
+      xpath (~> 3.2)
     cgi (0.4.2)
     coderay (1.1.3)
     concurrent-ruby (1.3.5)
     connection_pool (2.5.4)
     crass (1.0.6)
     csv (3.3.5)
+    cuprite (0.17)
+      capybara (~> 3.0)
+      ferrum (~> 0.17.0)
     dalli (3.2.8)
+    database_cleaner-active_record (2.2.2)
+      activerecord (>= 5.a)
+      database_cleaner-core (~> 2.0)
+    database_cleaner-core (2.0.1)
     date (3.5.0)
     dead_end (4.0.0)
     debug (1.11.0)
@@ -260,6 +278,12 @@ GEM
       logger
     faraday-net_http (3.4.2)
       net-http (~> 0.5)
+    ferrum (0.17.1)
+      addressable (~> 2.5)
+      base64 (~> 0.2)
+      concurrent-ruby (~> 1.1)
+      webrick (~> 1.7)
+      websocket-driver (~> 0.7)
     ffi (1.17.2-arm64-darwin)
     ffi (1.17.2-x86_64-linux-gnu)
     flamegraph (0.9.5)
@@ -338,6 +362,7 @@ GEM
       net-pop
       net-smtp
     marcel (1.1.0)
+    matrix (0.4.3)
     memory_profiler (1.1.0)
     method_source (1.0.0)
     mini_histogram (0.3.1)
@@ -432,6 +457,7 @@ GEM
     psych (5.2.6)
       date
       stringio
+    public_suffix (7.0.0)
     puma (7.1.0)
       nio4r (~> 2.0)
     pundit (2.5.2)
@@ -527,6 +553,9 @@ GEM
     rubocop-ast (1.48.0)
       parser (>= 3.3.7.2)
       prism (~> 1.4)
+    rubocop-capybara (2.22.1)
+      lint_roller (~> 1.1)
+      rubocop (~> 1.72, >= 1.72.1)
     rubocop-factory_bot (2.28.0)
       lint_roller (~> 1.1)
       rubocop (~> 1.72, >= 1.72.1)
@@ -647,6 +676,8 @@ GEM
     with_advisory_lock (7.0.2)
       activerecord (>= 7.2)
       zeitwerk (>= 2.7)
+    xpath (3.2.0)
+      nokogiri (~> 1.8)
     yard (0.9.37)
     zeitwerk (2.7.3)
 
@@ -672,10 +703,13 @@ DEPENDENCIES
   business_time
   cadmus!
   cadmus_navbar (~> 0.1.0)
+  capybara
   civil_service!
   cloudwatch_scheduler!
   csv
+  cuprite
   dalli
+  database_cleaner-active_record
   dead_end
   debug
   derailed_benchmarks
@@ -732,6 +766,7 @@ DEPENDENCIES
   reverse_markdown
   rollbar
   rubocop (= 1.81.7)
+  rubocop-capybara
   rubocop-factory_bot
   rubocop-graphql
   rubocop-performance
diff --git a/app/javascript/EventsApp/EventPage/EventPageRunCard.tsx b/app/javascript/EventsApp/EventPage/EventPageRunCard.tsx
index 61c617e7d68..2efec72f973 100644
--- a/app/javascript/EventsApp/EventPage/EventPageRunCard.tsx
+++ b/app/javascript/EventsApp/EventPage/EventPageRunCard.tsx
@@ -141,7 +141,7 @@ function EventPageRunCard({
         return response.data?.createMySignup.signup;
       }
     },
-    [event, run, revalidator],
+    [event, run, revalidator, client],
   );
 
   const createSignup = (signupOption: SignupOption) => {
diff --git a/app/javascript/packs/application.tsx b/app/javascript/packs/application.tsx
index 3aa5af2d80f..428c75c20d4 100644
--- a/app/javascript/packs/application.tsx
+++ b/app/javascript/packs/application.tsx
@@ -2,10 +2,7 @@ import 'regenerator-runtime/runtime';
 
 import mountReactComponents from '../mountReactComponents';
 import { StrictMode, use, useMemo } from 'react';
-import AuthenticityTokensManager, {
-  AuthenticityTokensContext,
-  getAuthenticityTokensURL,
-} from 'AuthenticityTokensContext';
+import AuthenticityTokensManager, { getAuthenticityTokensURL } from 'AuthenticityTokensContext';
 import { createBrowserRouter, RouterContextProvider, RouterProvider } from 'react-router';
 import { buildBrowserApolloClient } from 'useIntercodeApolloClient';
 import {
@@ -16,7 +13,6 @@ import {
   sessionContext,
 } from 'AppContexts';
 import { ClientConfigurationQueryData } from 'serverQueries.generated';
-import { ApolloProvider } from '@apollo/client/react';
 import { appRootRoutes } from 'AppRouter';
 
 const manager = new AuthenticityTokensManager(fetch, undefined, getAuthenticityTokensURL());
@@ -76,11 +72,7 @@ function DataModeApplicationEntry({
 
   return (
     <StrictMode>
-      <AuthenticityTokensContext.Provider value={manager}>
-        <ApolloProvider client={client}>
-          <RouterProvider router={router} />
-        </ApolloProvider>
-      </AuthenticityTokensContext.Provider>
+      <RouterProvider router={router} />
     </StrictMode>
   );
 }
diff --git a/app/javascript/root.tsx b/app/javascript/root.tsx
index 80d39c05960..aa00d573da4 100644
--- a/app/javascript/root.tsx
+++ b/app/javascript/root.tsx
@@ -1,22 +1,24 @@
+import { ApolloClient } from '@apollo/client';
 import { ApolloProvider } from '@apollo/client/react';
-import { authenticityTokensManagerContext, clientConfigurationDataContext } from 'AppContexts';
+import { apolloClientContext, authenticityTokensManagerContext, clientConfigurationDataContext } from 'AppContexts';
 import { ProviderStack } from 'AppWrapper';
 import AuthenticityTokensManager, { AuthenticityTokensContext } from 'AuthenticityTokensContext';
 import { ClientConfiguration } from 'graphqlTypes.generated';
-import { StrictMode, useMemo } from 'react';
+import { StrictMode } from 'react';
 import { LoaderFunction, useLoaderData } from 'react-router';
 import { ClientConfigurationQueryData } from 'serverQueries.generated';
-import { buildBrowserApolloClient } from 'useIntercodeApolloClient';
 
 type RootLoaderData = {
   clientConfigurationData: ClientConfigurationQueryData;
   authenticityTokensManager: AuthenticityTokensManager;
+  client: ApolloClient;
 };
 
 export const loader: LoaderFunction = ({ context }) => {
   const clientConfigurationData = context.get(clientConfigurationDataContext);
   const authenticityTokensManager = context.get(authenticityTokensManagerContext);
-  return { clientConfigurationData, authenticityTokensManager } satisfies RootLoaderData;
+  const client = context.get(apolloClientContext);
+  return { clientConfigurationData, client, authenticityTokensManager } satisfies RootLoaderData;
 };
 
 function RootProviderStack({ clientConfiguration }: { clientConfiguration: ClientConfiguration }) {
@@ -31,15 +33,11 @@ function RootProviderStack({ clientConfiguration }: { clientConfiguration: Clien
 
 export default function Root() {
   const loaderData = useLoaderData() as RootLoaderData;
-  const client = useMemo(
-    () => buildBrowserApolloClient(loaderData.authenticityTokensManager),
-    [loaderData.authenticityTokensManager],
-  );
 
   return (
     <StrictMode>
       <AuthenticityTokensContext.Provider value={loaderData.authenticityTokensManager}>
-        <ApolloProvider client={client}>
+        <ApolloProvider client={loaderData.client}>
           <RootProviderStack clientConfiguration={loaderData.clientConfigurationData.clientConfiguration} />
         </ApolloProvider>
       </AuthenticityTokensContext.Provider>
diff --git a/app/models/registration_policy.rb b/app/models/registration_policy.rb
index dcc067e71e1..d9ecddcf22f 100644
--- a/app/models/registration_policy.rb
+++ b/app/models/registration_policy.rb
@@ -142,7 +142,7 @@ def ==(other)
   end
 
   def as_json(*)
-    super.merge(buckets: buckets.as_json(*))
+    super.merge("buckets" => buckets.as_json(*))
   end
 
   def blank?
diff --git a/config/application.rb b/config/application.rb
index f74ef636838..cb630c83262 100644
--- a/config/application.rb
+++ b/config/application.rb
@@ -20,6 +20,7 @@ class Application < Rails::Application
     config.hosts << ENV.fetch("ASSETS_HOST", nil) if ENV["ASSETS_HOST"].present?
     config.hosts << /.*#{Regexp.escape(ENV.fetch("INTERCODE_HOST", nil))}/ if ENV["INTERCODE_HOST"].present?
     config.hosts << ->(host) { Convention.where(domain: host).any? }
+    config.hosts = [/.*/] if Rails.env.test?
     config.host_authorization = { exclude: ->(request) { request.path =~ %r{\A/healthz(\z|/)} } }
 
     # Settings in config/environments/* take precedence over those specified here.
diff --git a/lib/intercode/dynamic_cookie_domain.rb b/lib/intercode/dynamic_cookie_domain.rb
index f9b21161d59..959b30148b9 100644
--- a/lib/intercode/dynamic_cookie_domain.rb
+++ b/lib/intercode/dynamic_cookie_domain.rb
@@ -17,6 +17,7 @@ def app_level_domain(host)
     def cookie_domain(env)
       host = env['HTTP_HOST']&.split(':')&.first
       return :all unless host
+      return :all if Rails.env.test?
 
       # Safari blocks cross-domain cookies on .test domains :(
       if host =~ /\.test$/
diff --git a/lib/intercode/virtual_host_constraint.rb b/lib/intercode/virtual_host_constraint.rb
index a4c1df8f678..494e1ff4dad 100644
--- a/lib/intercode/virtual_host_constraint.rb
+++ b/lib/intercode/virtual_host_constraint.rb
@@ -1,7 +1,21 @@
 module Intercode
   class VirtualHostConstraint
     def matches?(request)
-      request.env['intercode.convention']
+      request.env["intercode.convention"]
+    end
+  end
+
+  class << self
+    attr_accessor :overridden_virtual_host_domain
+  end
+
+  def self.with_virtual_host_domain(domain)
+    self.overridden_virtual_host_domain = domain
+
+    begin
+      yield
+    ensure
+      self.overridden_virtual_host_domain = nil
     end
   end
 
@@ -13,11 +27,13 @@ def initialize(app)
     def call(env)
       request = Rack::Request.new(env)
       unless request.path =~ %r{\A#{Rails.application.config.assets.prefix}/}
-        env['intercode.convention'] ||= Convention.find_by(domain: request.host)
-        if ENV['FIND_VIRTUAL_HOST_DEBUG'].present?
-          if env['intercode.convention']
-            Rails.logger.info "Intercode::FindVirtualHost: request to #{request.host} mapped to \
-#{env['intercode.convention'].name}"
+        env["intercode.convention"] ||= Convention.find_by(
+          domain: Intercode.overridden_virtual_host_domain || request.host
+        )
+        if ENV["FIND_VIRTUAL_HOST_DEBUG"].present?
+          if env["intercode.convention"]
+            Rails.logger.info "Intercode::FindVirtualHost: request to #{request.host} mapped to
+#{env["intercode.convention"].name}"
           else
             Rails.logger.info "Intercode::FindVirtualHost: request to #{request.host} mapped to root site"
           end
diff --git a/test/application_system_test_case.rb b/test/application_system_test_case.rb
new file mode 100644
index 00000000000..d14cab51843
--- /dev/null
+++ b/test/application_system_test_case.rb
@@ -0,0 +1,16 @@
+require "test_helper"
+
+class ApplicationSystemTestCase < ActionDispatch::SystemTestCase
+  include Devise::Test::IntegrationHelpers
+
+  driven_by :cuprite, screen_size: [1200, 800], options: {
+    headless: %w[0 false].exclude?(ENV.fetch("HEADLESS", nil)),
+    js_errors: true
+  }
+
+  self.use_transactional_tests = false
+
+  teardown do
+    DatabaseCleaner.clean
+  end
+end
diff --git a/test/controllers/authenticity_tokens_controller_test.rb b/test/controllers/authenticity_tokens_controller_test.rb
deleted file mode 100644
index 0237ae18c5f..00000000000
--- a/test/controllers/authenticity_tokens_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class AuthenticityTokensControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/calendars_controller_test.rb b/test/controllers/calendars_controller_test.rb
deleted file mode 100644
index 7a8ef455619..00000000000
--- a/test/controllers/calendars_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class CalendarsControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/csv_exports_controller_test.rb b/test/controllers/csv_exports_controller_test.rb
deleted file mode 100644
index 6b8020ccdec..00000000000
--- a/test/controllers/csv_exports_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class CsvExportsControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/email_forwarders_controller_test.rb b/test/controllers/email_forwarders_controller_test.rb
deleted file mode 100644
index e0e7940b804..00000000000
--- a/test/controllers/email_forwarders_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require "test_helper"
-
-class EmailForwardersControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/graphiql_controller_test.rb b/test/controllers/graphiql_controller_test.rb
deleted file mode 100644
index df044962466..00000000000
--- a/test/controllers/graphiql_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class GraphiQLControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/graphql_controller_test.rb b/test/controllers/graphql_controller_test.rb
index 8c7d2c2d876..e296b0270d0 100644
--- a/test/controllers/graphql_controller_test.rb
+++ b/test/controllers/graphql_controller_test.rb
@@ -1,7 +1,7 @@
 require 'test_helper'
 
 class GraphqlControllerTest < ActionDispatch::IntegrationTest
-  let(:user_con_profile) { create :user_con_profile }
+  let(:user_con_profile) { create(:user_con_profile) }
   let(:convention) { user_con_profile.convention }
 
   setup do
@@ -25,7 +25,7 @@ class GraphqlControllerTest < ActionDispatch::IntegrationTest
     post graphql_url, params: { 'query' => query }
     assert_response :success
 
-    json = JSON.parse(response.body)
+    json = response.parsed_body
     refute json['errors'].present?, json['errors'].to_s
     assert_equal 'UserConProfile', json['data']['convention']['my_profile']['__typename']
     assert_equal user_con_profile.id.to_s, json['data']['convention']['my_profile']['id']
diff --git a/test/controllers/passwords_controller_test.rb b/test/controllers/passwords_controller_test.rb
deleted file mode 100644
index 18daa2159cb..00000000000
--- a/test/controllers/passwords_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class PasswordsControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/registrations_controller_test.rb b/test/controllers/registrations_controller_test.rb
index 3571cdd05ae..5413a5d775b 100644
--- a/test/controllers/registrations_controller_test.rb
+++ b/test/controllers/registrations_controller_test.rb
@@ -1,6 +1,6 @@
 require 'test_helper'
 
-class RegistrationsControllerTest < ActionController::TestCase
+class RegistrationsControllerTest < ActionDispatch::IntegrationTest
   # test "the truth" do
   #   assert true
   # end
diff --git a/test/controllers/reports_controller_test.rb b/test/controllers/reports_controller_test.rb
deleted file mode 100644
index 1c1cc3320cb..00000000000
--- a/test/controllers/reports_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class ReportsControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/single_page_app_controller_test.rb b/test/controllers/single_page_app_controller_test.rb
deleted file mode 100644
index 1447441adc7..00000000000
--- a/test/controllers/single_page_app_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class SinglePageAppControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/sitemaps_controller_test.rb b/test/controllers/sitemaps_controller_test.rb
deleted file mode 100644
index 543c92706fa..00000000000
--- a/test/controllers/sitemaps_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class SitemapsControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/sns_notifications_controller_test.rb b/test/controllers/sns_notifications_controller_test.rb
deleted file mode 100644
index 2972e689d12..00000000000
--- a/test/controllers/sns_notifications_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class SnsNotificationsControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/stripe_account_controller_test.rb b/test/controllers/stripe_account_controller_test.rb
deleted file mode 100644
index 91ec72f108e..00000000000
--- a/test/controllers/stripe_account_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class StripeAccountControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/stripe_webhooks_controller_test.rb b/test/controllers/stripe_webhooks_controller_test.rb
deleted file mode 100644
index bee17f40e88..00000000000
--- a/test/controllers/stripe_webhooks_controller_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class StripeWebhooksControllerTest < ActionDispatch::IntegrationTest
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/controllers/user_con_profiles_controller_test.rb b/test/controllers/user_con_profiles_controller_test.rb
index 7fbbf27ae85..55ea1713f55 100644
--- a/test/controllers/user_con_profiles_controller_test.rb
+++ b/test/controllers/user_con_profiles_controller_test.rb
@@ -1,7 +1,7 @@
 require 'test_helper'
 
 describe UserConProfilesController do
-  let(:user_con_profile) { create :user_con_profile }
+  let(:user_con_profile) { create(:user_con_profile) }
   let(:convention) { user_con_profile.convention }
   let(:con_admin_staff_position) { create(:admin_staff_position, convention: convention) }
   let(:con_admin_profile) do
diff --git a/test/factories/cms_content_groups.rb b/test/factories/cms_content_groups.rb
index 5b5a9876d8a..60209ac0ceb 100644
--- a/test/factories/cms_content_groups.rb
+++ b/test/factories/cms_content_groups.rb
@@ -19,6 +19,6 @@
 FactoryBot.define do
   factory :cms_content_group do
     sequence(:name) { |n| "content_group_#{n}" }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/cms_files.rb b/test/factories/cms_files.rb
index b07c8c8303b..d2e16ccd51b 100644
--- a/test/factories/cms_files.rb
+++ b/test/factories/cms_files.rb
@@ -24,7 +24,7 @@
 FactoryBot.define do
   factory :cms_file do
     file { Rack::Test::UploadedFile.new(File.expand_path('test/files/war_bond.png', Rails.root), 'image/png') }
-    association :parent, factory: :convention
-    association :uploader, factory: :user
+    parent factory: %i[convention]
+    uploader factory: %i[user]
   end
 end
diff --git a/test/factories/cms_graphql_queries.rb b/test/factories/cms_graphql_queries.rb
index f377c8061f6..acc9a545bd7 100644
--- a/test/factories/cms_graphql_queries.rb
+++ b/test/factories/cms_graphql_queries.rb
@@ -22,6 +22,6 @@
   factory :cms_graphql_query do
     sequence(:identifier) { |n| "graphql_query_#{n}" }
     query { "query { convention: conventionByRequestHost { id } }" }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/cms_layouts.rb b/test/factories/cms_layouts.rb
index 3b6ba9bd2a5..ee79973729e 100644
--- a/test/factories/cms_layouts.rb
+++ b/test/factories/cms_layouts.rb
@@ -23,6 +23,6 @@
   factory :cms_layout do
     sequence(:name) { |n| "layout_#{n}" }
     content { "Some text" }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/cms_navigation_items.rb b/test/factories/cms_navigation_items.rb
index ae8af61d1b5..2cc26e99214 100644
--- a/test/factories/cms_navigation_items.rb
+++ b/test/factories/cms_navigation_items.rb
@@ -29,6 +29,6 @@
 FactoryBot.define do
   factory :cms_navigation_item do
     sequence(:title) { |n| "navigation item #{n}" }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/cms_partials.rb b/test/factories/cms_partials.rb
index 06796c73c62..e93fb2f3e83 100644
--- a/test/factories/cms_partials.rb
+++ b/test/factories/cms_partials.rb
@@ -23,6 +23,6 @@
   factory :cms_partial do
     sequence(:name) { |n| "partial_#{n}" }
     content { 'Some text' }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/cms_variables.rb b/test/factories/cms_variables.rb
index e0e51bf2848..691eacca43f 100644
--- a/test/factories/cms_variables.rb
+++ b/test/factories/cms_variables.rb
@@ -22,6 +22,6 @@
   factory :cms_variable do
     sequence(:key) { |n| "variable_#{n}" }
     value { "foobar" }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/doorkeeper_applications.rb b/test/factories/doorkeeper_applications.rb
index c755ef2afc7..1008082f9a9 100644
--- a/test/factories/doorkeeper_applications.rb
+++ b/test/factories/doorkeeper_applications.rb
@@ -1,7 +1,7 @@
 # Read about factories at https://github.com/thoughtbot/factory_bot
 
 FactoryBot.define do
-  factory :doorkeeper_application, class: Doorkeeper::Application do
+  factory :doorkeeper_application, class: 'Doorkeeper::Application' do
     sequence(:name) { |n| "Application #{n}" }
     redirect_uri { 'https://butt.holdings' }
   end
diff --git a/test/factories/forms.rb b/test/factories/forms.rb
index 40111514501..cb866310003 100644
--- a/test/factories/forms.rb
+++ b/test/factories/forms.rb
@@ -22,7 +22,7 @@
 
 FactoryBot.define do
   factory :form do
-    association :convention
+    convention
   end
 
   factory :event_form, parent: :form do
diff --git a/test/factories/maximum_event_provided_tickets_overrides.rb b/test/factories/maximum_event_provided_tickets_overrides.rb
index b1de2c71ffa..1f0b57953d2 100644
--- a/test/factories/maximum_event_provided_tickets_overrides.rb
+++ b/test/factories/maximum_event_provided_tickets_overrides.rb
@@ -24,7 +24,7 @@
 
 FactoryBot.define do
   factory :maximum_event_provided_tickets_override do
-    association :event
+    event
     override_value { 42 }
 
     after(:build) do |mepto|
diff --git a/test/factories/order_entries.rb b/test/factories/order_entries.rb
index 005c0600f99..9f261d84a41 100644
--- a/test/factories/order_entries.rb
+++ b/test/factories/order_entries.rb
@@ -32,8 +32,8 @@
 
 FactoryBot.define do
   factory :order_entry do
-    association :order
-    association :product
+    order
+    product
     quantity { 1 }
   end
 end
diff --git a/test/factories/orders.rb b/test/factories/orders.rb
index b8c97b015c4..c3723268cd2 100644
--- a/test/factories/orders.rb
+++ b/test/factories/orders.rb
@@ -28,6 +28,6 @@
 FactoryBot.define do
   factory :order do
     status { "pending" }
-    association :user_con_profile
+    user_con_profile
   end
 end
diff --git a/test/factories/organization_roles.rb b/test/factories/organization_roles.rb
index 8e9466239a6..91a73e0d51b 100644
--- a/test/factories/organization_roles.rb
+++ b/test/factories/organization_roles.rb
@@ -22,6 +22,6 @@
 FactoryBot.define do
   factory :organization_role do
     sequence(:name) { |n| "Organization role #{n}" }
-    association :organization
+    organization
   end
 end
diff --git a/test/factories/pages.rb b/test/factories/pages.rb
index 6db153a2585..a5b9669012c 100644
--- a/test/factories/pages.rb
+++ b/test/factories/pages.rb
@@ -32,6 +32,6 @@
   factory :page do
     sequence(:name) { |n| "Page #{n}" }
     content { "MyText" }
-    association :parent, factory: :convention
+    parent factory: %i[convention]
   end
 end
diff --git a/test/factories/permissions.rb b/test/factories/permissions.rb
index f6683ff5d0f..93800a546d2 100644
--- a/test/factories/permissions.rb
+++ b/test/factories/permissions.rb
@@ -33,12 +33,12 @@
 # rubocop:enable Layout/LineLength, Lint/RedundantCopDisableDirective
 
 FactoryBot.define do
-  factory :organization_permission, class: Permission do
-    association :organization_role
+  factory :organization_permission, class: 'Permission' do
+    organization_role
     permission { "manage_organization_access" }
   end
 
-  factory :event_category_permission, class: Permission do
+  factory :event_category_permission, class: 'Permission' do
     permission { "update_events" }
 
     before(:create) do |permission|
diff --git a/test/factories/rooms.rb b/test/factories/rooms.rb
index 33d42f4975c..417e480cf48 100644
--- a/test/factories/rooms.rb
+++ b/test/factories/rooms.rb
@@ -21,7 +21,7 @@
 
 FactoryBot.define do
   factory :room do
-    association(:convention)
+    convention
     name { 'MyString' }
   end
 end
diff --git a/test/factories/staff_positions.rb b/test/factories/staff_positions.rb
index ac289ee587f..9887b01ed4f 100644
--- a/test/factories/staff_positions.rb
+++ b/test/factories/staff_positions.rb
@@ -29,7 +29,7 @@
     name { 'Wrangler' }
   end
 
-  factory :admin_staff_position, class: StaffPosition do
+  factory :admin_staff_position, class: 'StaffPosition' do
     convention
     name { 'Chief Wrangler' }
     after(:create) do |staff_position|
diff --git a/test/factories/ticket_types.rb b/test/factories/ticket_types.rb
index 74f75c6b4c9..183767acde1 100644
--- a/test/factories/ticket_types.rb
+++ b/test/factories/ticket_types.rb
@@ -26,13 +26,13 @@
 #
 # rubocop:enable Layout/LineLength, Lint/RedundantCopDisableDirective
 FactoryBot.define do
-  factory :free_ticket_type, class: TicketType do
+  factory :free_ticket_type, class: 'TicketType' do
     convention
     name { 'free' }
     description { 'Free ticket' }
   end
 
-  factory :paid_ticket_type, class: TicketType do
+  factory :paid_ticket_type, class: 'TicketType' do
     convention
     name { 'paid' }
     description { 'Paid ticket' }
@@ -48,14 +48,14 @@
     end
   end
 
-  factory :event_provided_ticket_type, class: TicketType do
+  factory :event_provided_ticket_type, class: 'TicketType' do
     convention
     name { 'event_comp' }
     description { 'Comp ticket for event' }
     maximum_event_provided_tickets { 2 }
   end
 
-  factory :event_specific_ticket_type, class: TicketType do
+  factory :event_specific_ticket_type, class: 'TicketType' do
     event
     name { 'event_ticket' }
     description { 'Event-specific ticket' }
diff --git a/test/graphql/intercode_schema_test.rb b/test/graphql/intercode_schema_test.rb
index d1e2e4297d6..59491b74077 100644
--- a/test/graphql/intercode_schema_test.rb
+++ b/test/graphql/intercode_schema_test.rb
@@ -1,8 +1,8 @@
 require 'test_helper'
 
-class IntercodeSchemaTest < ActiveSupport::TestCase
+class IntercodeSchemaTest < ActiveSupport::TestCase # rubocop:disable GraphQL/ObjectDescription
   it 'generates a schema definition without throwing an exception' do
     definition = IntercodeSchema.to_definition
-    assert_match /type Query/, definition
+    assert_match(/type Query/, definition)
   end
 end
diff --git a/test/graphql/queries/app_root_query_test.rb b/test/graphql/queries/app_root_query_test.rb
index 79bb8e8e24c..638d2382f25 100644
--- a/test/graphql/queries/app_root_query_test.rb
+++ b/test/graphql/queries/app_root_query_test.rb
@@ -1,6 +1,6 @@
 require "test_helper"
 
-class Queries::AppRootQueryTest < ActiveSupport::TestCase
+class Queries::AppRootQueryTest < ActiveSupport::TestCase # rubocop:disable GraphQL/ObjectDescription
   let(:convention) { create(:convention, :with_standard_content) }
   let(:user_con_profile) { create(:user_con_profile, convention:) }
 
diff --git a/test/helpers/events_helper_test.rb b/test/helpers/events_helper_test.rb
deleted file mode 100644
index 2e7567e00cb..00000000000
--- a/test/helpers/events_helper_test.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-require 'test_helper'
-
-class EventsHelperTest < ActionView::TestCase
-end
diff --git a/test/helpers/team_member_helper_test.rb b/test/helpers/team_member_helper_test.rb
deleted file mode 100644
index 3c7ad568922..00000000000
--- a/test/helpers/team_member_helper_test.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-require 'test_helper'
-
-class TeamMemberHelperTest < ActionView::TestCase
-end
diff --git a/test/javascript/EventPage/EventPageRunCard.test.tsx b/test/javascript/EventPage/EventPageRunCard.test.tsx
new file mode 100644
index 00000000000..bd2a1477e6e
--- /dev/null
+++ b/test/javascript/EventPage/EventPageRunCard.test.tsx
@@ -0,0 +1,528 @@
+import { render, fireEvent, waitFor } from '../testUtils';
+import EventPageRunCard, { EventPageRunCardProps } from '../../../app/javascript/EventsApp/EventPage/EventPageRunCard';
+import { EventPageQueryData } from '../../../app/javascript/EventsApp/EventPage/queries.generated';
+import {
+  SignupMode,
+  SignupState,
+  SignupRankedChoiceState,
+  FormType,
+  SignupRequestState,
+} from '../../../app/javascript/graphqlTypes.generated';
+import {
+  CreateMySignupDocument,
+  CreateMySignupMutationData,
+  CreateSignupRankedChoiceDocument,
+  CreateSignupRankedChoiceMutationData,
+  WithdrawSignupRequestDocument,
+  WithdrawSignupRequestMutationData,
+} from '../../../app/javascript/EventsApp/EventPage/mutations.generated';
+import { MockLink } from '@apollo/client/testing';
+import { vi } from 'vitest';
+
+describe('EventPageRunCard', () => {
+  const mockEvent: EventPageQueryData['convention']['event'] = {
+    __typename: 'Event',
+    id: '1',
+    title: 'Test Event',
+    length_seconds: 14400,
+    private_signup_list: false,
+    my_rating: null,
+    can_play_concurrently: false,
+    form_response_attrs_json_with_rendered_markdown: '{}',
+    event_category: {
+      __typename: 'EventCategory',
+      id: '1',
+      team_member_name: 'GM',
+      teamMemberNamePlural: 'GMs',
+    },
+    ticket_types: [],
+    form: {
+      __typename: 'Form',
+      id: '1',
+      form_type: FormType.Event,
+      title: 'Event Form',
+      form_sections: [],
+    },
+    team_members: [],
+    registration_policy: {
+      __typename: 'RegistrationPolicy',
+      slots_limited: true,
+      prevent_no_preference_signups: false,
+      total_slots_including_not_counted: 10,
+      buckets: [
+        {
+          __typename: 'RegistrationPolicyBucket',
+          key: 'player',
+          name: 'Player',
+          description: 'Regular player',
+          not_counted: false,
+          slots_limited: true,
+          anything: false,
+          minimum_slots: 0,
+          total_slots: 10,
+        },
+      ],
+    },
+    runs: [],
+  };
+
+  const mockRun: EventPageQueryData['convention']['event']['runs'][0] = {
+    __typename: 'Run',
+    id: '1',
+    title_suffix: 'Friday Night',
+    starts_at: '2025-01-01T19:00:00Z',
+    current_ability_can_signup_summary_run: false,
+    grouped_signup_counts: [
+      {
+        __typename: 'GroupedSignupCount',
+        bucket_key: 'player',
+        count: 5,
+        counted: true,
+        state: SignupState.Confirmed,
+        team_member: false,
+      },
+    ],
+    rooms: [
+      {
+        __typename: 'Room',
+        id: '1',
+        name: 'Room 101',
+      },
+    ],
+    my_signups: [],
+    my_signup_requests: [],
+    my_signup_ranked_choices: [],
+  };
+
+  const mockMyProfile: EventPageQueryData['convention']['my_profile'] = {
+    __typename: 'UserConProfile',
+    id: '1',
+    signup_constraints: {
+      __typename: 'UserSignupConstraints',
+      at_maximum_signups: false,
+    },
+  };
+
+  const mockCurrentAbility: EventPageQueryData['currentAbility'] = {
+    __typename: 'Ability',
+    can_read_schedule: true,
+    can_update_event: false,
+    can_read_event_signups: false,
+  };
+
+  const mockSignupRounds: EventPageQueryData['convention']['signup_rounds'] = [];
+
+  const defaultProps: EventPageRunCardProps = {
+    event: mockEvent,
+    run: mockRun,
+    myProfile: mockMyProfile,
+    currentAbility: mockCurrentAbility,
+    signupRounds: mockSignupRounds,
+    addToQueue: false,
+  };
+
+  const renderEventPageRunCard = async (
+    props: Partial<EventPageRunCardProps> = {},
+    apolloMocks: MockLink.MockedResponse[] = [],
+  ) => {
+    return await render(<EventPageRunCard {...defaultProps} {...props} />, {
+      apolloMocks,
+      appRootContextValue: {
+        signupMode: SignupMode.SelfService,
+        timezoneName: 'America/New_York',
+      },
+    });
+  };
+
+  describe('rendering states', () => {
+    test('renders run card without signup', async () => {
+      const { getByText, getByRole, container } = await renderEventPageRunCard();
+      // Check for run title suffix
+      expect(getByText('Friday Night')).toBeTruthy();
+      // Check for signup button
+      expect(getByRole('button', { name: /Sign up now/i })).toBeTruthy();
+      // Check that bucket name is displayed in the capacity graph
+      expect(container.textContent).toMatch(/Player/);
+    });
+
+    test('renders with existing confirmed signup', async () => {
+      const runWithSignup = {
+        ...mockRun,
+        my_signups: [
+          {
+            __typename: 'Signup' as const,
+            id: '1',
+            state: SignupState.Confirmed,
+            waitlist_position: null,
+            counted: true,
+            expires_at: null,
+          },
+        ],
+      };
+
+      const { getByRole } = await renderEventPageRunCard({ run: runWithSignup });
+      // Should have a withdraw button when signed up
+      expect(getByRole('button', { name: /withdraw/i })).toBeTruthy();
+    });
+
+    test('renders with waitlisted signup', async () => {
+      const runWithWaitlist = {
+        ...mockRun,
+        my_signups: [
+          {
+            __typename: 'Signup' as const,
+            id: '1',
+            state: SignupState.Waitlisted,
+            waitlist_position: 3,
+            counted: true,
+            expires_at: null,
+          },
+        ],
+      };
+
+      const { container, getByRole } = await renderEventPageRunCard({ run: runWithWaitlist });
+      // Should show waitlist position in the card
+      expect(container.textContent).toMatch(/3/);
+      expect(getByRole('button', { name: /withdraw/i })).toBeTruthy();
+    });
+
+    test('renders with pending signup request', async () => {
+      const runWithRequest: EventPageRunCardProps['run'] = {
+        ...mockRun,
+        my_signup_requests: [
+          {
+            __typename: 'SignupRequest' as const,
+            id: '1',
+            state: SignupRequestState.Pending,
+            target_run: {
+              __typename: 'Run' as const,
+              id: '1',
+            },
+            requested_bucket_key: 'player',
+            replace_signup: null,
+          },
+        ],
+      };
+
+      const { getByRole } = await renderEventPageRunCard({ run: runWithRequest });
+      // Should have a withdraw signup request button
+      expect(getByRole('button', { name: /withdraw/i })).toBeTruthy();
+    });
+  });
+
+  describe('signup creation', () => {
+    test('creates self-service signup successfully', async () => {
+      const mockSignup = {
+        __typename: 'Signup' as const,
+        id: '2',
+        state: SignupState.Confirmed,
+        waitlist_position: null,
+        counted: true,
+        expires_at: null,
+      };
+
+      const mutationCalled = vi.fn();
+      const createSignupMock: MockLink.MockedResponse<CreateMySignupMutationData> = {
+        request: {
+          query: CreateMySignupDocument,
+          variables: {
+            runId: '1',
+            requestedBucketKey: 'player',
+            noRequestedBucket: false,
+          },
+        },
+        result: () => {
+          mutationCalled();
+          return {
+            data: {
+              __typename: 'Mutation',
+              createMySignup: {
+                __typename: 'CreateMySignupPayload' as const,
+                signup: { ...mockSignup, run: { ...mockRun, my_signups: [...mockRun.my_signups, mockSignup] } },
+              },
+            },
+          };
+        },
+      };
+
+      const { getByRole } = await renderEventPageRunCard({}, [createSignupMock]);
+
+      // Find and click the signup button
+      const signupButton = getByRole('button', { name: /Sign up now/i }) as HTMLButtonElement;
+
+      // Verify button is initially enabled
+      expect(signupButton.disabled).toBe(false);
+
+      fireEvent.click(signupButton);
+
+      // Verify the button becomes disabled during the mutation
+      await waitFor(() => {
+        expect(signupButton.disabled).toBe(true);
+      });
+
+      // Verify the mutation was called
+      await waitFor(() => {
+        expect(mutationCalled).toHaveBeenCalledTimes(1);
+      });
+
+      // Verify button is re-enabled after mutation completes
+      await waitFor(() => {
+        expect(signupButton.disabled).toBe(false);
+      });
+    });
+
+    test('creates ranked choice for queue', async () => {
+      const mutationCalled = vi.fn();
+      const createRankedChoiceMock: MockLink.MockedResponse<CreateSignupRankedChoiceMutationData> = {
+        request: {
+          query: CreateSignupRankedChoiceDocument,
+          variables: {
+            targetRunId: '1',
+            requestedBucketKey: 'player',
+          },
+        },
+        result: () => {
+          mutationCalled();
+          return {
+            data: {
+              __typename: 'Mutation',
+              createSignupRankedChoice: {
+                __typename: 'CreateSignupRankedChoicePayload' as const,
+                signup_ranked_choice: {
+                  __typename: 'SignupRankedChoice' as const,
+                  id: '1',
+                  state: SignupRankedChoiceState.Pending,
+                  priority: 1,
+                  requested_bucket_key: 'player',
+                  target_run: {
+                    __typename: 'Run' as const,
+                    id: '1',
+                  },
+                },
+              },
+            },
+          };
+        },
+      };
+
+      const profileAtMaxSignups = {
+        ...mockMyProfile,
+        signup_constraints: {
+          __typename: 'UserSignupConstraints' as const,
+          at_maximum_signups: true,
+        },
+      };
+
+      const { getByRole } = await renderEventPageRunCard(
+        {
+          myProfile: profileAtMaxSignups,
+          addToQueue: true,
+        },
+        [createRankedChoiceMock],
+      );
+
+      // Should show "Add to queue" option
+      const queueButton = getByRole('button', { name: /Add to.*queue/i }) as HTMLButtonElement;
+      expect(queueButton).toBeTruthy();
+
+      fireEvent.click(queueButton);
+
+      // Verify the mutation was called
+      await waitFor(() => {
+        expect(mutationCalled).toHaveBeenCalledTimes(1);
+      });
+
+      // After adding to queue, the mutation completes successfully
+      // Note: The UI won't update to show "in queue" state without a full revalidation
+      // which would require mocking the EventPageQuery to return updated data
+    });
+  });
+
+  describe('signup withdrawal', () => {
+    test('withdraws pending signup request', async () => {
+      const runWithRequest: EventPageRunCardProps['run'] = {
+        ...mockRun,
+        my_signup_requests: [
+          {
+            __typename: 'SignupRequest' as const,
+            id: '1',
+            state: SignupRequestState.Pending,
+            target_run: {
+              __typename: 'Run' as const,
+              id: '1',
+            },
+            requested_bucket_key: 'player',
+            replace_signup: null,
+          },
+        ],
+      };
+
+      const mutationCalled = vi.fn();
+      const withdrawRequestMock: MockLink.MockedResponse<WithdrawSignupRequestMutationData> = {
+        request: {
+          query: WithdrawSignupRequestDocument,
+          variables: {
+            id: '1',
+          },
+        },
+        result: () => {
+          mutationCalled();
+          return {
+            data: {
+              __typename: 'Mutation',
+              withdrawSignupRequest: {
+                __typename: 'WithdrawSignupRequestPayload' as const,
+                signup_request: {
+                  __typename: 'SignupRequest' as const,
+                  id: '1',
+                  state: SignupRequestState.Withdrawn,
+                  target_run: mockRun,
+                  requested_bucket_key: 'player',
+                  replace_signup: null,
+                },
+              },
+            },
+          };
+        },
+      };
+
+      const { getByText, getByRole } = await renderEventPageRunCard({ run: runWithRequest }, [withdrawRequestMock]);
+
+      const withdrawButton = getByText(/withdraw.*request/i);
+      fireEvent.click(withdrawButton);
+
+      // Should show confirmation dialog
+      await waitFor(() => {
+        expect(getByText(/Test Event/)).toBeTruthy();
+      });
+
+      // Click OK on the confirmation dialog to proceed with withdrawal
+      const okButton = await waitFor(() => getByRole('button', { name: 'OK' }));
+      fireEvent.click(okButton);
+
+      // Verify the mutation was called
+      await waitFor(() => {
+        expect(mutationCalled).toHaveBeenCalledTimes(1);
+      });
+
+      // After withdrawal, the mutation completes successfully
+      // Note: The UI won't update to remove the pending request without a full revalidation
+      // which would require mocking the EventPageQuery to return updated data
+    });
+  });
+
+  describe('moderated signup mode', () => {
+    test('renders signup button in moderated mode', async () => {
+      const { getByRole } = await renderEventPageRunCard({}, []);
+
+      const signupButton = getByRole('button', { name: /Sign up now/i });
+
+      // In moderated mode, clicking would open modal instead of creating signup directly
+      // The modal component is rendered but not visible until clicked
+      expect(signupButton).toBeTruthy();
+    });
+  });
+
+  describe('team member signup', () => {
+    test('shows team member signup option for team members', async () => {
+      const eventWithTeamMember = {
+        ...mockEvent,
+        team_members: [
+          {
+            __typename: 'TeamMember' as const,
+            id: '1',
+            email: 'gm@example.com',
+            display_team_member: true,
+            user_con_profile: {
+              __typename: 'UserConProfile' as const,
+              id: '1',
+              name_without_nickname: 'Test GM',
+              gravatar_enabled: false,
+              gravatar_url: '',
+            },
+          },
+        ],
+      };
+
+      const { getByText } = await renderEventPageRunCard({ event: eventWithTeamMember });
+      expect(getByText('GM')).toBeTruthy();
+    });
+  });
+
+  describe('signup options', () => {
+    test('shows no preference option when multiple buckets exist', async () => {
+      const eventWithMultipleBuckets = {
+        ...mockEvent,
+        registration_policy: {
+          ...mockEvent.registration_policy!,
+          buckets: [
+            {
+              __typename: 'RegistrationPolicyBucket' as const,
+              key: 'player',
+              name: 'Player',
+              description: 'Regular player',
+              not_counted: false,
+              slots_limited: true,
+              anything: false,
+              minimum_slots: 0,
+              total_slots: 5,
+            },
+            {
+              __typename: 'RegistrationPolicyBucket' as const,
+              key: 'premium',
+              name: 'Premium',
+              description: 'Premium player',
+              not_counted: false,
+              slots_limited: true,
+              anything: false,
+              minimum_slots: 0,
+              total_slots: 5,
+            },
+          ],
+        },
+      };
+
+      const { getByText } = await renderEventPageRunCard({ event: eventWithMultipleBuckets });
+      expect(getByText('Player')).toBeTruthy();
+      expect(getByText('Premium')).toBeTruthy();
+      expect(getByText('No preference')).toBeTruthy();
+    });
+
+    test('hides no preference when prevent_no_preference_signups is true', async () => {
+      const eventPreventingNoPreference = {
+        ...mockEvent,
+        registration_policy: {
+          ...mockEvent.registration_policy!,
+          prevent_no_preference_signups: true,
+          buckets: [
+            {
+              __typename: 'RegistrationPolicyBucket' as const,
+              key: 'player',
+              name: 'Player',
+              description: 'Regular player',
+              not_counted: false,
+              slots_limited: true,
+              anything: false,
+              minimum_slots: 0,
+              total_slots: 5,
+            },
+            {
+              __typename: 'RegistrationPolicyBucket' as const,
+              key: 'premium',
+              name: 'Premium',
+              description: 'Premium player',
+              not_counted: false,
+              slots_limited: true,
+              anything: false,
+              minimum_slots: 0,
+              total_slots: 5,
+            },
+          ],
+        },
+      };
+
+      const { queryByText } = await renderEventPageRunCard({ event: eventPreventingNoPreference });
+      expect(queryByText('No preference')).toBeNull();
+    });
+  });
+});
diff --git a/test/jobs/notify_event_proposal_changes_job_test.rb b/test/jobs/notify_event_proposal_changes_job_test.rb
deleted file mode 100644
index 65d66589695..00000000000
--- a/test/jobs/notify_event_proposal_changes_job_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class NotifyEventProposalChangesJobTest < ActiveJob::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/mailers/user_mailer_test.rb b/test/mailers/user_mailer_test.rb
deleted file mode 100644
index 67a1629cc9f..00000000000
--- a/test/mailers/user_mailer_test.rb
+++ /dev/null
@@ -1,7 +0,0 @@
-require 'test_helper'
-
-class UserMailerTest < ActionMailer::TestCase
-  # test "the truth" do
-  #   assert true
-  # end
-end
diff --git a/test/models/signup_round_test.rb b/test/models/signup_round_test.rb
index 6a7f7f7fea3..25f7601c471 100644
--- a/test/models/signup_round_test.rb
+++ b/test/models/signup_round_test.rb
@@ -29,7 +29,7 @@ class SignupRoundTest < ActiveSupport::TestCase
   describe "#execute!" do
     it "does nothing when automation_action is nil" do
       mock_service = Minitest::Mock.new
-      signup_round = FactoryBot.create(:signup_round, automation_action: nil)
+      signup_round = create(:signup_round, automation_action: nil)
 
       ExecuteRankedChoiceSignupRoundService.stub :new, mock_service do
         signup_round.execute!
@@ -41,9 +41,9 @@ class SignupRoundTest < ActiveSupport::TestCase
     it "runs ranked choice signups when configured to do so" do
       mock_service = Minitest::Mock.new
       mock_service.expect :call!, nil
-      convention = FactoryBot.create(:convention, signup_automation_mode: "ranked_choice")
+      convention = create(:convention, signup_automation_mode: "ranked_choice")
       signup_round =
-        FactoryBot.create(
+        create(
           :signup_round,
           convention:,
           automation_action: "execute_ranked_choice",
@@ -59,8 +59,8 @@ class SignupRoundTest < ActiveSupport::TestCase
 
     it "does not run ranked choice signups when automation_action is nil, even if in a ranked-choice con" do
       mock_service = Minitest::Mock.new
-      convention = FactoryBot.create(:convention, signup_automation_mode: "ranked_choice")
-      signup_round = FactoryBot.create(:signup_round, convention:, automation_action: nil)
+      convention = create(:convention, signup_automation_mode: "ranked_choice")
+      signup_round = create(:signup_round, convention:, automation_action: nil)
 
       ExecuteRankedChoiceSignupRoundService.stub :new, mock_service do
         signup_round.execute!
diff --git a/test/services/create_team_member_service_test.rb b/test/services/create_team_member_service_test.rb
index 18ac6149d86..521173cf35d 100644
--- a/test/services/create_team_member_service_test.rb
+++ b/test/services/create_team_member_service_test.rb
@@ -1,11 +1,11 @@
 require 'test_helper'
 
 class CreateTeamMemberServiceTest < ActiveSupport::TestCase
-  let(:convention) { create :convention, :with_notification_templates }
+  let(:convention) { create(:convention, :with_notification_templates) }
   let(:event_category) { create(:event_category, convention: convention, can_provide_tickets: true) }
-  let(:event) { create :event, convention: convention, event_category: event_category }
-  let(:the_run) { create :run, event: event }
-  let(:user_con_profile) { create :user_con_profile, convention: convention }
+  let(:event) { create(:event, convention: convention, event_category: event_category) }
+  let(:the_run) { create(:run, event: event) }
+  let(:user_con_profile) { create(:user_con_profile, convention: convention) }
   let(:user) { user_con_profile.user }
   let(:team_member_attrs) { {} }
   let(:provide_ticket_type_id) { nil }
diff --git a/test/services/event_change_registration_policy_service_test.rb b/test/services/event_change_registration_policy_service_test.rb
index 04119e7bf77..5037bfa9ac3 100644
--- a/test/services/event_change_registration_policy_service_test.rb
+++ b/test/services/event_change_registration_policy_service_test.rb
@@ -4,8 +4,8 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
   include ActiveJob::TestHelper
 
   let(:convention) { create(:convention, :with_notification_templates) }
-  let(:event) { create :event, convention: convention }
-  let(:the_run) { create :run, event: event }
+  let(:event) { create(:event, convention: convention) }
+  let(:the_run) { create(:run, event: event) }
   let(:new_registration_policy) do
     RegistrationPolicy.new(
       buckets: [
@@ -15,8 +15,8 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
       ]
     )
   end
-  let(:whodunit) { create :user_con_profile, convention: convention }
-  let(:team_member) { create :team_member, event: event, receive_signup_email: 'all_signups' }
+  let(:whodunit) { create(:user_con_profile, convention: convention) }
+  let(:team_member) { create(:team_member, event: event, receive_signup_email: 'all_signups') }
 
   subject { EventChangeRegistrationPolicyService.new(event, new_registration_policy, whodunit) }
 
@@ -40,7 +40,7 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
   end
 
   describe 'with existing signups in buckets that will be removed' do
-    let(:user_con_profile) { create :user_con_profile, convention: convention }
+    let(:user_con_profile) { create(:user_con_profile, convention: convention) }
     let(:signup) do
       create(
         :signup,
@@ -93,8 +93,8 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
       )
     end
 
-    let(:user_con_profile1) { create :user_con_profile, convention: convention }
-    let(:user_con_profile2) { create :user_con_profile, convention: convention }
+    let(:user_con_profile1) { create(:user_con_profile, convention: convention) }
+    let(:user_con_profile2) { create(:user_con_profile, convention: convention) }
 
     let(:signup1) do
       create(
@@ -156,7 +156,7 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
         )
       end
 
-      let(:user_con_profile3) { create :user_con_profile, convention: convention }
+      let(:user_con_profile3) { create(:user_con_profile, convention: convention) }
       let(:signup3) do
         create(
           :signup,
@@ -201,7 +201,7 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
     end
 
     describe 'with an impossible situation' do
-      let(:user_con_profile3) { create :user_con_profile, convention: convention }
+      let(:user_con_profile3) { create(:user_con_profile, convention: convention) }
       let(:signup3) do
         create(
           :signup,
@@ -250,8 +250,8 @@ class EventChangeRegistrationPolicyServiceTest < ActiveSupport::TestCase
       )
     end
 
-    let(:user_con_profile1) { create :user_con_profile, convention: convention }
-    let(:user_con_profile2) { create :user_con_profile, convention: convention }
+    let(:user_con_profile1) { create(:user_con_profile, convention: convention) }
+    let(:user_con_profile2) { create(:user_con_profile, convention: convention) }
 
     let(:signup1) do
       create(
diff --git a/test/services/provide_event_ticket_service_test.rb b/test/services/provide_event_ticket_service_test.rb
index 43fdb99bc78..a8c2900188e 100644
--- a/test/services/provide_event_ticket_service_test.rb
+++ b/test/services/provide_event_ticket_service_test.rb
@@ -26,7 +26,7 @@
     it 'fails' do
       result = service.call
       assert result.failure?
-      assert_match /already has a ticket/, result.errors.full_messages.join("\n")
+      assert_match(/already has a ticket/, result.errors.full_messages.join("\n"))
     end
   end
 
@@ -36,7 +36,7 @@
     it 'fails' do
       result = service.call
       assert result.failure?
-      assert_match /cannot provide tickets/, result.errors.full_messages.join("\n")
+      assert_match(/cannot provide tickets/, result.errors.full_messages.join("\n"))
     end
   end
 
@@ -46,7 +46,7 @@
     it 'fails' do
       result = service.call
       assert result.failure?
-      assert_match /cannot be provided/, result.errors.full_messages.join("\n")
+      assert_match(/cannot be provided/, result.errors.full_messages.join("\n"))
     end
   end
 
@@ -61,7 +61,7 @@
     it 'fails' do
       result = service.call
       assert result.failure?
-      assert_match /has already provided/, result.errors.full_messages.join("\n")
+      assert_match(/has already provided/, result.errors.full_messages.join("\n"))
     end
   end
 end
diff --git a/test/system/event_page_test.rb b/test/system/event_page_test.rb
new file mode 100644
index 00000000000..a968371ff8e
--- /dev/null
+++ b/test/system/event_page_test.rb
@@ -0,0 +1,54 @@
+require "application_system_test_case"
+
+class EventPageTest < ApplicationSystemTestCase
+  before do
+    Intercode.overridden_virtual_host_domain = convention.domain
+  end
+
+  after do
+    Intercode.overridden_virtual_host_domain = nil
+  end
+
+  let(:root_site) { create(:root_site) }
+  let(:convention) { create(:convention, :with_standard_content) }
+  let(:event_category) do
+    create(:event_category, convention:, event_form: convention.forms.find_by!(title: "Regular event form"))
+  end
+  let(:signup_round) { create(:signup_round, convention:, start: 1.day.ago, maximum_event_signups: "unlimited") }
+  let(:event) { create(:event, convention:, event_category: convention.event_categories.first) }
+  let(:the_run) { create(:run, event:, starts_at: 1.day.from_now) }
+
+  before do
+    root_site
+    event_category
+    signup_round
+    the_run
+  end
+
+  it "renders the page" do
+    visit "/events/#{event.to_param}"
+    assert page.has_content?("Log in to sign up for")
+    assert page.has_content?(event.title)
+  end
+
+  it "lets you sign up" do
+    user_con_profile = create(:user_con_profile, convention:)
+    sign_in user_con_profile.user
+
+    visit "/events/#{event.to_param}"
+    click_button "Sign up now"
+    assert page.has_content?("You are signed up.")
+  end
+
+  it "lets you withdraw" do
+    user_con_profile = create(:user_con_profile, convention:)
+    create(:signup, user_con_profile:, run: the_run)
+    sign_in user_con_profile.user
+
+    visit "/events/#{event.to_param}"
+    click_button "Withdraw"
+    check "Yes, I’m sure I want to withdraw my confirmed signup from #{event.title}."
+    click_button "Confirm"
+    assert page.has_content?("Sign up now")
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 6c5ae2f1748..c2d03979bba 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -31,6 +31,22 @@
   Minitest::Reporters.use!(Minitest::Reporters::ProgressReporter.new, ENV, Minitest.backtrace_filter)
 end
 
+require "capybara/cuprite"
+Capybara.javascript_driver = :cuprite
+Capybara.register_driver(:cuprite) do |app|
+  Capybara::Cuprite::Driver.new(
+    app,
+    window_size: [1200, 800],
+    headless: %w[0 false].exclude?(ENV.fetch("HEADLESS", nil)),
+    js_errors: true
+  )
+end
+
+require "capybara/rails"
+require "capybara/minitest"
+
+DatabaseCleaner.strategy = :truncation
+
 class ActiveSupport::TestCase
   include FactoryBot::Syntax::Methods
   include ActionMailer::TestCase::ClearTestDeliveries
@@ -81,7 +97,7 @@ class GraphqlTestExecutionError < StandardError
     def initialize(result)
       @result = result
       @errors = result["errors"]
-      super(errors.map { |error| error["message"] }.join(", "))
+      super(errors.pluck("message").join(", "))
     end
 
     def backtrace