Avoid loading Rails or ActiveSupport in tests

Gemfile

@@ -18,6 +18,7 @@ gem "sorbet-static-and-runtime", platforms: :ruby
 gem "tapioca", "~> 0.13", require: false, platforms: :ruby
 gem "psych", "~> 5.1", require: false
 gem "rails", "8.0.0.beta1"
+gem "test_declarative"
 
 platforms :mingw, :x64_mingw, :mswin, :jruby do
   gem "tzinfo"

Gemfile.lock

@@ -250,6 +250,7 @@ GEM
       spoom (>= 1.2.0)
       thor (>= 1.2.0)
       yard-sorbet
+    test_declarative (0.0.6)
     thor (1.3.2)
     timeout (0.4.1)
     tzinfo (2.0.6)
@@ -289,6 +290,7 @@ DEPENDENCIES
   sorbet-static-and-runtime
   sqlite3
   tapioca (~> 0.13)
+  test_declarative
   tzinfo
   tzinfo-data
 

Rakefile

@@ -13,7 +13,13 @@ require "rake/testtask"
 Rake::TestTask.new(:test) do |t|
   t.libs << "test"
   t.libs << "lib"
-  t.test_files = FileList["test/**/*_test.rb"]
+  t.test_files = FileList["test/**/*_test.rb"] - ["test/ruby_lsp_rails/server_test.rb"]
 end
 
-task default: [:"db:setup", :test]
+Rake::TestTask.new("test:server") do |t|
+  t.libs << "test"
+  t.libs << "lib"
+  t.test_files = ["test/ruby_lsp_rails/server_test.rb"]
+end
+
+task default: [:"db:setup", :test, "test:server"]

gemfiles/Gemfile-rails-main

@@ -19,6 +19,7 @@ gem "sorbet-static-and-runtime", platforms: :ruby
 gem "tapioca", "~> 0.11", require: false, platforms: :ruby
 gem "psych", "~> 5.1", require: false
 gem "rails", github: "rails/rails", branch: "main"
+gem "test_declarative"
 
 platforms :mingw, :x64_mingw, :mswin, :jruby do
   gem "tzinfo"

test/ruby_lsp_rails/addon_test.rb

@@ -5,7 +5,7 @@
 
 module RubyLsp
   module Rails
-    class AddonTest < ActiveSupport::TestCase
+    class AddonTest < Minitest::Test
       test "name returns add-on name" do
         addon = Addon.new
         assert_equal("Ruby LSP Rails", addon.name)

test/ruby_lsp_rails/code_lens_test.rb

@@ -5,8 +5,8 @@
 
 module RubyLsp
   module Rails
-    class CodeLensTest < ActiveSupport::TestCase
-      setup do
+    class CodeLensTest < Minitest::Test
+      def setup
         GlobalState.any_instance.stubs(:test_library).returns("rails")
         @ruby = Gem.win_platform? ? "ruby.exe" : "ruby"
       end

test/ruby_lsp_rails/definition_test.rb

@@ -5,7 +5,7 @@
 
 module RubyLsp
   module Rails
-    class DefinitionTest < ActiveSupport::TestCase
+    class DefinitionTest < Minitest::Test
       test "recognizes model callback with multiple symbol arguments" do
         response = generate_definitions_for_source(<<~RUBY, { line: 3, character: 18 })
           # typed: false

test/ruby_lsp_rails/document_symbol_test.rb

@@ -5,7 +5,7 @@
 
 module RubyLsp
   module Rails
-    class DocumentSymbolTest < ActiveSupport::TestCase
+    class DocumentSymbolTest < Minitest::Test
       test "recognizes Rails Active Support test cases" do
         response = generate_document_symbols_for_source(<<~RUBY)
           class Test < ActiveSupport::TestCase

test/ruby_lsp_rails/hover_test.rb

@@ -5,7 +5,7 @@
 
 module RubyLsp
   module Rails
-    class HoverTest < ActiveSupport::TestCase
+    class HoverTest < Minitest::Test
       test "hook returns model column information" do
         expected_response = {
           schema_file: "#{dummy_root}/db/schema.rb",

test/ruby_lsp_rails/indexing_enhancement_test.rb

@@ -5,7 +5,7 @@
 
 module RubyLsp
   module Rails
-    class IndexingEnhancementTest < ActiveSupport::TestCase
+    class IndexingEnhancementTest < Minitest::Test
       class << self
         # For these tests, it's convenient to have the index fully populated with Rails information, but we don't have
         # to reindex on every single example or that will be too slow

test/ruby_lsp_rails/launch_test.rb

@@ -5,7 +5,7 @@
 
 module RubyLsp
   module Rails
-    class LaunchTest < ActiveSupport::TestCase
+    class LaunchTest < Minitest::Test
       test "launching the client succeeds" do
         outgoing_queue = Thread::Queue.new
 

test/ruby_lsp_rails/runner_client_test.rb

@@ -6,14 +6,14 @@
 
 module RubyLsp
   module Rails
-    class RunnerClientTest < ActiveSupport::TestCase
-      setup do
+    class RunnerClientTest < Minitest::Test
+      def setup
         @outgoing_queue = Thread::Queue.new
-        @client = T.let(RunnerClient.new(@outgoing_queue), RunnerClient)
+        @client = T.let(RunnerClient.new(@outgoing_queue), T.nilable(RunnerClient))
       end
 
-      teardown do
-        @client.shutdown
+      def teardown
+        T.must(@client).shutdown
 
         # On Windows, the server process sometimes takes a lot longer to shutdown and may end up getting force killed,
         # which makes this assertion flaky
@@ -35,13 +35,13 @@ class RunnerClientTest < ActiveSupport::TestCase
           ["country_id", "integer", nil, false],
           ["active", "boolean", "1", false],
         ]
-        response = T.must(@client.model("User"))
+        response = T.must(T.must(@client).model("User"))
         assert_equal(columns, response.fetch(:columns))
         assert_match(%r{db/schema\.rb$}, response.fetch(:schema_file))
       end
 
       test "returns nil if the request returns a nil response" do
-        assert_nil @client.model("ApplicationRecord") # ApplicationRecord is abstract
+        assert_nil T.must(@client).model("ApplicationRecord") # ApplicationRecord is abstract
       end
 
       test "falls back to null client when bin/rails is not found" do
@@ -106,7 +106,7 @@ class RunnerClientTest < ActiveSupport::TestCase
           request_name: "do_something",
           id: 5,
         )
-        @client.delegate_notification(server_addon_name: "My Add-on", request_name: "do_something", id: 5)
+        T.must(@client).delegate_notification(server_addon_name: "My Add-on", request_name: "do_something", id: 5)
       end
 
       test "delegate request" do
@@ -116,7 +116,7 @@ class RunnerClientTest < ActiveSupport::TestCase
           request_name: "do_something",
           id: 5,
         )
-        @client.delegate_request(server_addon_name: "My Add-on", request_name: "do_something", id: 5)
+        T.must(@client).delegate_request(server_addon_name: "My Add-on", request_name: "do_something", id: 5)
       end
 
       test "server add-ons can log messages with the editor" do
@@ -133,8 +133,8 @@ def execute(request, params)
           end
         RUBY
 
-        @client.register_server_addon(File.expand_path("server_addon.rb"))
-        @client.delegate_notification(server_addon_name: "Tapioca", request_name: "dsl")
+        T.must(@client).register_server_addon(File.expand_path("server_addon.rb"))
+        T.must(@client).delegate_notification(server_addon_name: "Tapioca", request_name: "dsl")
 
         # Started booting server
         pop_log_notification(@outgoing_queue, RubyLsp::Constant::MessageType::LOG)
@@ -156,8 +156,10 @@ def execute(request, params)
       end
     end
 
-    class NullClientTest < ActiveSupport::TestCase
-      setup { @client = NullClient.new }
+    class NullClientTest < Minitest::Test
+      def setup
+        @client = NullClient.new
+      end
 
       test "#shutdown is a no-op" do
         assert_nothing_raised { @client.shutdown }

test/ruby_lsp_rails/server_test.rb

@@ -1,11 +1,11 @@
 # typed: true
 # frozen_string_literal: true
 
-require "test_helper"
+require "test_helper_server"
 require "ruby_lsp/ruby_lsp_rails/server"
 
 class ServerTest < ActiveSupport::TestCase
-  setup do
+  def setup
     @stdout = StringIO.new
     @server = RubyLsp::Rails::Server.new(stdout: @stdout, override_default_output_device: false)
   end

test/ruby_lsp_rails/support/location_builder_test.rb

@@ -6,7 +6,7 @@
 module RubyLsp
   module Rails
     module Support
-      class LocationBuilderTest < ActiveSupport::TestCase
+      class LocationBuilderTest < Minitest::Test
         test "line_location_from_s raises argument error if invalid string given" do
           assert_raises(ArgumentError) { LocationBuilder.line_location_from_s("banana") }
         end

test/ruby_lsp_rails_test.rb

@@ -4,7 +4,7 @@
 require "test_helper"
 
 module RubyLsp
-  class RailsTest < ActiveSupport::TestCase
+  class RailsTest < Minitest::Test
     test "it has a version number" do
       assert RubyLsp::Rails::VERSION
     end

test/test_helper.rb

@@ -1,18 +1,13 @@
 # typed: true
 # frozen_string_literal: true
 
-# Configure Rails Environment
-ENV["RAILS_ENV"] = "test"
-
-require_relative "../test/dummy/config/environment"
-ActiveRecord::Migrator.migrations_paths = [File.expand_path("../test/dummy/db/migrate", __dir__)]
-ActiveRecord::Migrator.migrations_paths << File.expand_path("../db/migrate", __dir__)
-require "sorbet-runtime"
-require "rails/test_help"
-require "mocha/minitest"
 require "ruby_lsp/internal"
+require "minitest/autorun"
+require "test_declarative"
+require "mocha/minitest"
 require "ruby_lsp/test_helper"
 require "ruby_lsp/ruby_lsp_rails/addon"
+require "active_support/testing/assertions" # for assert_nothing_raised
 
 if defined?(DEBUGGER__)
   DEBUGGER__::CONFIG[:skip_path] =
@@ -26,10 +21,11 @@
   # Tapioca (and thus Spoom) is not available on Windows
 end
 
-module ActiveSupport
-  class TestCase
+module Minitest
+  class Test
     extend T::Sig
     include RubyLsp::TestHelper
+    include ActiveSupport::Testing::Assertions # for assert_nothing_raised
 
     def dummy_root
       File.expand_path("#{__dir__}/dummy")

test/test_helper_server.rb

@@ -0,0 +1,11 @@
+# typed: true
+# frozen_string_literal: true
+
+# Configure Rails Environment
+ENV["RAILS_ENV"] = "test"
+
+require "test_helper"
+
+require_relative "../test/dummy/config/environment"
+ActiveRecord::Migrator.migrations_paths = [File.expand_path("../test/dummy/db/migrate", __dir__)]
+ActiveRecord::Migrator.migrations_paths << File.expand_path("../db/migrate", __dir__)