1 files changed, 298 insertions, 0 deletions
diff --git a/railties/test/application/test_runner_test.rb b/railties/test/application/test_runner_test.rb
new file mode 100644
index 0000000000..7a5a428845
--- /dev/null
+++ b/railties/test/application/test_runner_test.rb
@@ -0,0 +1,298 @@
+require 'isolation/abstract_unit'
+require 'active_support/core_ext/string/strip'
+
+module ApplicationTests
+  class TestRunnerTest < ActiveSupport::TestCase
+    include ActiveSupport::Testing::Isolation
+
+    def setup
+      build_app
+      create_schema
+    end
+
+    def teardown
+      teardown_app
+    end
+
+    def test_should_not_display_heading
+      create_test_file
+      run_test_command.tap do |output|
+        assert_no_match /Run options:/, output
+        assert_no_match /Running tests:/, output
+      end
+    end
+
+    def test_run_shortcut
+      create_test_file :models, 'foo'
+      output = Dir.chdir(app_path) { `bundle exec rails t test/models/foo_test.rb` }
+      assert_match /1 tests, 1 assertions, 0 failures/, output
+    end
+
+    def test_run_single_file
+      create_test_file :models, 'foo'
+      assert_match /1 tests, 1 assertions, 0 failures/, run_test_command("test/models/foo_test.rb")
+    end
+
+    def test_run_multiple_files
+      create_test_file :models,  'foo'
+      create_test_file :models,  'bar'
+      assert_match /2 tests, 2 assertions, 0 failures/, run_test_command("test/models/foo_test.rb test/models/bar_test.rb")
+    end
+
+    def test_run_file_with_syntax_error
+      app_file 'test/models/error_test.rb', <<-RUBY
+        require 'test_helper'
+        def; end
+      RUBY
+
+      error_stream = Tempfile.new('error')
+      redirect_stderr(error_stream) { run_test_command('test/models/error_test.rb') }
+      assert_match /SyntaxError/, error_stream.read
+    end
+
+    def test_invoke_rake_test_prepare
+      app_file "lib/tasks/test.rake", <<-RUBY
+        namespace :test do
+          task :prepare do
+            puts "Hello World"
+          end
+        end
+      RUBY
+      create_test_file
+      assert_match /Hello World/, run_test_command
+    end
+
+    def test_run_models
+      create_test_file :models, 'foo'
+      create_test_file :models, 'bar'
+      create_test_file :controllers, 'foobar_controller'
+      run_test_command("models").tap do |output|
+        assert_match /FooTest/, output
+        assert_match /BarTest/, output
+        assert_match /2 tests, 2 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_helpers
+      create_test_file :helpers, 'foo_helper'
+      create_test_file :helpers, 'bar_helper'
+      create_test_file :controllers, 'foobar_controller'
+      run_test_command('helpers').tap do |output|
+        assert_match /FooHelperTest/, output
+        assert_match /BarHelperTest/, output
+        assert_match /2 tests, 2 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_units
+      create_test_file :models, 'foo'
+      create_test_file :helpers, 'bar_helper'
+      create_test_file :unit, 'baz_unit'
+      create_test_file :controllers, 'foobar_controller'
+      run_test_command('units').tap do |output|
+        assert_match /FooTest/, output
+        assert_match /BarHelperTest/, output
+        assert_match /BazUnitTest/, output
+        assert_match /3 tests, 3 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_controllers
+      create_test_file :controllers, 'foo_controller'
+      create_test_file :controllers, 'bar_controller'
+      create_test_file :models, 'foo'
+      run_test_command('controllers').tap do |output|
+        assert_match /FooControllerTest/, output
+        assert_match /BarControllerTest/, output
+        assert_match /2 tests, 2 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_mailers
+      create_test_file :mailers, 'foo_mailer'
+      create_test_file :mailers, 'bar_mailer'
+      create_test_file :models, 'foo'
+      run_test_command('mailers').tap do |output|
+        assert_match /FooMailerTest/, output
+        assert_match /BarMailerTest/, output
+        assert_match /2 tests, 2 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_functionals
+      create_test_file :mailers, 'foo_mailer'
+      create_test_file :controllers, 'bar_controller'
+      create_test_file :functional, 'baz_functional'
+      create_test_file :models, 'foo'
+      run_test_command('functionals').tap do |output|
+        assert_match /FooMailerTest/, output
+        assert_match /BarControllerTest/, output
+        assert_match /BazFunctionalTest/, output
+        assert_match /3 tests, 3 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_integration
+      create_test_file :integration, 'foo_integration'
+      create_test_file :models, 'foo'
+      run_test_command('integration').tap do |output|
+        assert_match /FooIntegration/, output
+        assert_match /1 tests, 1 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_all_suites
+      suites = [:models, :helpers, :unit, :controllers, :mailers, :functional, :integration]
+      suites.each { |suite| create_test_file suite, "foo_#{suite}" }
+      run_test_command('') .tap do |output|
+        suites.each { |suite| assert_match /Foo#{suite.to_s.camelize}Test/, output }
+        assert_match /7 tests, 7 assertions, 0 failures/, output
+      end
+    end
+
+    def test_run_named_test
+      app_file 'test/unit/chu_2_koi_test.rb', <<-RUBY
+        require 'test_helper'
+
+        class Chu2KoiTest < ActiveSupport::TestCase
+          def test_rikka
+            puts 'Rikka'
+          end
+
+          def test_sanae
+            puts 'Sanae'
+          end
+        end
+      RUBY
+
+      run_test_command('test/unit/chu_2_koi_test.rb -n test_rikka').tap do |output|
+        assert_match /Rikka/, output
+        assert_no_match /Sanae/, output
+      end
+    end
+
+    def test_not_load_fixtures_when_running_single_test
+      create_model_with_fixture
+      create_fixture_test :models, 'user'
+      assert_match /0 users/, run_test_command('test/models/user_test.rb')
+      assert_match /3 users/, run_test_command('test/models/user_test.rb -f')
+    end
+
+    def test_load_fixtures_when_running_test_suites
+      create_model_with_fixture
+      suites = [:models, :helpers, [:units, :unit], :controllers, :mailers,
+        [:functionals, :functional], :integration]
+
+      suites.each do |suite, directory|
+        directory ||= suite
+        create_fixture_test directory
+        assert_match /3 users/, run_test_command(suite)
+        Dir.chdir(app_path) { FileUtils.rm_f "test/#{directory}" }
+      end
+    end
+
+    def test_run_different_environment_using_env_var
+      app_file 'test/unit/env_test.rb', <<-RUBY
+        require 'test_helper'
+
+        class EnvTest < ActiveSupport::TestCase
+          def test_env
+            puts Rails.env
+          end
+        end
+      RUBY
+
+      assert_match /development/, Dir.chdir(app_path) { `RAILS_ENV=development bundle exec rails test test/unit/env_test.rb` }
+    end
+
+    def test_run_different_environment_using_e_tag
+      app_file 'test/unit/env_test.rb', <<-RUBY
+        require 'test_helper'
+
+        class EnvTest < ActiveSupport::TestCase
+          def test_env
+            puts Rails.env
+          end
+        end
+      RUBY
+
+      assert_match /development/, run_test_command('-e development test/unit/env_test.rb')
+    end
+
+    def test_generated_scaffold_works_with_rails_test
+      create_scaffold
+      assert_match /0 failures, 0 errors, 0 skips/, run_test_command('')
+    end
+
+    private
+      def run_test_command(arguments = 'test/unit/test_test.rb')
+        Dir.chdir(app_path) { `bundle exec rails test #{arguments}` }
+      end
+
+      def create_model_with_fixture
+        script 'generate model user name:string'
+
+        app_file 'test/fixtures/users.yml', <<-YAML.strip_heredoc
+          vampire:
+            id: 1
+            name: Koyomi Araragi
+          crab:
+            id: 2
+            name: Senjougahara Hitagi
+          cat:
+            id: 3
+            name: Tsubasa Hanekawa
+        YAML
+
+        run_migration
+      end
+
+      def create_fixture_test(path = :unit, name = 'test')
+        app_file "test/#{path}/#{name}_test.rb", <<-RUBY
+          require 'test_helper'
+
+          class #{name.camelize}Test < ActiveSupport::TestCase
+            def test_fixture
+              puts "\#{User.count} users (\#{__FILE__})"
+            end
+          end
+        RUBY
+      end
+
+      def create_schema
+        app_file 'db/schema.rb', ''
+      end
+
+      def redirect_stderr(target_stream)
+        previous_stderr = STDERR.dup
+        $stderr.reopen(target_stream)
+        yield
+        target_stream.rewind
+      ensure
+        $stderr = previous_stderr
+      end
+
+      def create_test_file(path = :unit, name = 'test')
+        app_file "test/#{path}/#{name}_test.rb", <<-RUBY
+          require 'test_helper'
+
+          class #{name.camelize}Test < ActiveSupport::TestCase
+            def test_truth
+              puts "#{name.camelize}Test"
+              assert true
+            end
+          end
+        RUBY
+      end
+
+      def create_scaffold
+        script 'generate scaffold user name:string'
+        Dir.chdir(app_path) { File.exist?('app/models/user.rb') }
+        run_migration
+      end
+
+      def run_migration
+        Dir.chdir(app_path) { `bundle exec rake db:migrate` }
+      end
+  end
+end