Updates to make rails 4 happy with minitest 5:

+ Namespace changes, overhaul of runners.
+ Internal ivar name changes
- Removed a logger globally applied to tests that spew everywhere?!?
+ Override Minitest#__run to sort tests by name.
+ Reworked testing isolation to work with the new cleaner architecture.
- Removed a bunch of tests that just test minitest straight up. I think these changes were all merged to minitest 4 a long time ago.
- Minor report output differences.

actionpack/lib/action_view/test_case.rb

@@ -211,7 +211,9 @@ def view
       alias_method :_view, :view
 
       INTERNAL_IVARS = [
-        :@__name__,
+        :@NAME,
+        :@failures,
+        :@assertions,
         :@__io__,
         :@_assertion_wrapped,
         :@_assertions,

activemodel/test/cases/railtie_test.rb

@@ -9,7 +9,6 @@ def setup
 
     @app ||= Class.new(::Rails::Application) do
       config.eager_load = false
-      config.logger = Logger.new(STDOUT)
     end
   end
 

activesupport/lib/active_support/test_case.rb

@@ -16,10 +16,28 @@
 rescue LoadError
 end
 
+module Minitest # :nodoc:
+  class << self
+    remove_method :__run
+  end
+
+  def self.__run reporter, options # :nodoc:
+    # FIXME: MT5's runnables is not ordered. This is needed because
+    # we have have tests have cross-class order-dependent bugs.
+    suites = Runnable.runnables.sort_by { |ts| ts.name.to_s }
+
+    parallel, serial = suites.partition { |s| s.test_order == :parallel }
+
+    ParallelEach.new(parallel).map { |suite| suite.run reporter, options } +
+     serial.map { |suite| suite.run reporter, options }
+  end
+end
+
 module ActiveSupport
-  class TestCase < ::MiniTest::Unit::TestCase
-    Assertion = MiniTest::Assertion
-    alias_method :method_name, :__name__
+  class TestCase < ::Minitest::Test
+    Assertion = Minitest::Assertion
+
+    alias_method :method_name, :name
 
     $tags = {}
     def self.for_tag(tag)

activesupport/lib/active_support/testing/autorun.rb

@@ -1,5 +1,5 @@
 gem 'minitest'
 
-require 'minitest/unit'
+require 'minitest/autorun'
 
-MiniTest::Unit.autorun
+Minitest.autorun

activesupport/lib/active_support/testing/isolation.rb

@@ -72,16 +72,12 @@ def _run_class_setup      # class setup method should only happen in parent
         end
       end
 
-      def run(runner)
-        _run_class_setup
-
-        serialized = run_in_isolation do |isolated_runner|
-          super(isolated_runner)
+      def run
+        serialized = run_in_isolation do
+          super
         end
 
-        retval, proxy = Marshal.load(serialized)
-        proxy.__replay__(runner)
-        retval
+        Marshal.load(serialized)
       end
 
       module Forking
@@ -90,9 +86,8 @@ def run_in_isolation(&blk)
 
           pid = fork do
             read.close
-            proxy = ProxyTestResult.new
-            retval = yield proxy
-            write.puts [Marshal.dump([retval, proxy])].pack("m")
+            yield
+            write.puts [Marshal.dump(self.dup)].pack("m")
             exit!
           end
 

activesupport/lib/active_support/testing/tagged_logging.rb

@@ -7,7 +7,7 @@ module TaggedLogging #:nodoc:
 
       def before_setup
         if tagged_logger
-          heading = "#{self.class}: #{__name__}"
+          heading = "#{self.class}: #{name}"
           divider = '-' * heading.size
           tagged_logger.info divider
           tagged_logger.info heading

activesupport/test/test_case_test.rb

@@ -2,116 +2,6 @@
 
 module ActiveSupport
   class TestCaseTest < ActiveSupport::TestCase
-    class FakeRunner
-      attr_reader :puked
-
-      def initialize
-        @puked = []
-      end
-
-      def puke(klass, name, e)
-        @puked << [klass, name, e]
-      end
-
-      def options
-        nil
-      end
-
-      def record(*args)
-      end
-
-      def info_signal
-      end
-    end
-
-    def test_standard_error_raised_within_setup_callback_is_puked
-      tc = Class.new(TestCase) do
-        def self.name; nil; end
-
-        setup :bad_callback
-        def bad_callback; raise 'oh noes' end
-        def test_true; assert true end
-      end
-
-      test_name = 'test_true'
-      fr = FakeRunner.new
-
-      test = tc.new test_name
-      test.run fr
-      klass, name, exception = *fr.puked.first
-
-      assert_equal tc, klass
-      assert_equal test_name, name
-      assert_equal 'oh noes', exception.message
-    end
-
-    def test_standard_error_raised_within_teardown_callback_is_puked
-      tc = Class.new(TestCase) do
-        def self.name; nil; end
-
-        teardown :bad_callback
-        def bad_callback; raise 'oh noes' end
-        def test_true; assert true end
-      end
-
-      test_name = 'test_true'
-      fr = FakeRunner.new
-
-      test = tc.new test_name
-      test.run fr
-      klass, name, exception = *fr.puked.first
-
-      assert_equal tc, klass
-      assert_equal test_name, name
-      assert_equal 'oh noes', exception.message
-    end
-
-    def test_passthrough_exception_raised_within_test_method_is_not_rescued
-      tc = Class.new(TestCase) do
-        def self.name; nil; end
-
-        def test_which_raises_interrupt; raise Interrupt; end
-      end
-
-      test_name = 'test_which_raises_interrupt'
-      fr = FakeRunner.new
-
-      test = tc.new test_name
-      assert_raises(Interrupt) { test.run fr }
-    end
-
-    def test_passthrough_exception_raised_within_setup_callback_is_not_rescued
-      tc = Class.new(TestCase) do
-        def self.name; nil; end
-
-        setup :callback_which_raises_interrupt
-        def callback_which_raises_interrupt; raise Interrupt; end
-        def test_true; assert true end
-      end
-
-      test_name = 'test_true'
-      fr = FakeRunner.new
-
-      test = tc.new test_name
-      assert_raises(Interrupt) { test.run fr }
-    end
-
-    def test_passthrough_exception_raised_within_teardown_callback_is_not_rescued
-      tc = Class.new(TestCase) do
-        def self.name; nil; end
-
-        teardown :callback_which_raises_interrupt
-        def callback_which_raises_interrupt; raise Interrupt; end
-        def test_true; assert true end
-      end
-
-      test_name = 'test_true'
-      fr = FakeRunner.new
-
-      test = tc.new test_name
-      assert_raises(Interrupt) { test.run fr }
-    end
-
     def test_pending_deprecation
       assert_deprecated do
         pending "should use #skip instead"

activesupport/test/test_test.rb

@@ -201,6 +201,6 @@ def before_setup
   end
 
   def test_logs_tagged_with_current_test_case
-    assert_match "#{self.class}: #{__name__}\n", @out.string
+    assert_match "#{self.class}: #{name}\n", @out.string
   end
 end

railties/test/application/rake_test.rb

@@ -214,7 +214,7 @@ def test_scaffold_tests_pass_by_default
          bundle exec rake db:migrate db:test:clone test`
       end
 
-      assert_match(/7 tests, 13 assertions, 0 failures, 0 errors/, output)
+      assert_match(/7 runs, 13 assertions, 0 failures, 0 errors/, output)
       assert_no_match(/Errors running/, output)
     end
 
@@ -224,7 +224,7 @@ def test_scaffold_with_references_columns_tests_pass_by_default
          bundle exec rake db:migrate db:test:clone test`
       end
 
-      assert_match(/7 tests, 13 assertions, 0 failures, 0 errors/, output)
+      assert_match(/7 runs, 13 assertions, 0 failures, 0 errors/, output)
       assert_no_match(/Errors running/, output)
     end
 

railties/test/application/test_runner_test.rb

@@ -32,13 +32,13 @@ def test_env
     def test_run_single_file
       create_test_file :models, 'foo'
       create_test_file :models, 'bar'
-      assert_match "1 tests, 1 assertions, 0 failures", run_test_command("test/models/foo_test.rb")
+      assert_match "1 runs, 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")
+      assert_match "2 runs, 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
@@ -59,7 +59,7 @@ def test_run_models
       run_test_models_command.tap do |output|
         assert_match "FooTest", output
         assert_match "BarTest", output
-        assert_match "2 tests, 2 assertions, 0 failures", output
+        assert_match "2 runs, 2 assertions, 0 failures", output
       end
     end
 
@@ -70,7 +70,7 @@ def test_run_helpers
       run_test_helpers_command.tap do |output|
         assert_match "FooHelperTest", output
         assert_match "BarHelperTest", output
-        assert_match "2 tests, 2 assertions, 0 failures", output
+        assert_match "2 runs, 2 assertions, 0 failures", output
       end
     end
 
@@ -83,7 +83,7 @@ def test_run_units
         assert_match "FooTest", output
         assert_match "BarHelperTest", output
         assert_match "BazUnitTest", output
-        assert_match "3 tests, 3 assertions, 0 failures", output
+        assert_match "3 runs, 3 assertions, 0 failures", output
       end
     end
 
@@ -94,7 +94,7 @@ def test_run_controllers
       run_test_controllers_command.tap do |output|
         assert_match "FooControllerTest", output
         assert_match "BarControllerTest", output
-        assert_match "2 tests, 2 assertions, 0 failures", output
+        assert_match "2 runs, 2 assertions, 0 failures", output
       end
     end
 
@@ -105,7 +105,7 @@ def test_run_mailers
       run_test_mailers_command.tap do |output|
         assert_match "FooMailerTest", output
         assert_match "BarMailerTest", output
-        assert_match "2 tests, 2 assertions, 0 failures", output
+        assert_match "2 runs, 2 assertions, 0 failures", output
       end
     end
 
@@ -118,7 +118,7 @@ def test_run_functionals
         assert_match "FooMailerTest", output
         assert_match "BarControllerTest", output
         assert_match "BazFunctionalTest", output
-        assert_match "3 tests, 3 assertions, 0 failures", output
+        assert_match "3 runs, 3 assertions, 0 failures", output
       end
     end
 
@@ -127,7 +127,7 @@ def test_run_integration
       create_test_file :models, 'foo'
       run_test_integration_command.tap do |output|
         assert_match "FooIntegration", output
-        assert_match "1 tests, 1 assertions, 0 failures", output
+        assert_match "1 runs, 1 assertions, 0 failures", output
       end
     end
 
@@ -136,7 +136,7 @@ def test_run_all_suites
       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
+        assert_match "7 runs, 7 assertions, 0 failures", output
       end
     end
 

railties/test/generators/plugin_new_generator_test.rb

@@ -168,14 +168,14 @@ def test_ensure_that_tests_work
     run_generator
     FileUtils.cd destination_root
     quietly { system 'bundle install' }
-    assert_match(/1 tests, 1 assertions, 0 failures, 0 errors/, `bundle exec rake test`)
+    assert_match(/1 runs, 1 assertions, 0 failures, 0 errors/, `bundle exec rake test`)
   end
 
   def test_ensure_that_tests_works_in_full_mode
     run_generator [destination_root, "--full", "--skip_active_record"]
     FileUtils.cd destination_root
     quietly { system 'bundle install' }
-    assert_match(/1 tests, 1 assertions, 0 failures, 0 errors/, `bundle exec rake test`)
+    assert_match(/1 runs, 1 assertions, 0 failures, 0 errors/, `bundle exec rake test`)
   end
 
   def test_ensure_that_migration_tasks_work_with_mountable_option