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.

4 files changed, 30 insertions, 17 deletions

diff --git a/activesupport/lib/active_support/test_case.rb b/activesupport/lib/active_support/test_case.rb
index 8b392c36d0..f0962998a0 100644
--- a/activesupport/lib/active_support/test_case.rb
+++ b/activesupport/lib/active_support/test_case.rb
@@ -16,10 +16,28 @@ begin
 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)
diff --git a/activesupport/lib/active_support/testing/autorun.rb b/activesupport/lib/active_support/testing/autorun.rb
index c446adc16d..45d8193abb 100644
--- a/activesupport/lib/active_support/testing/autorun.rb
+++ b/activesupport/lib/active_support/testing/autorun.rb
@@ -1,5 +1,5 @@
 gem 'minitest'
 
-require 'minitest/unit'
+require 'minitest/autorun'
 
-MiniTest::Unit.autorun
+Minitest.autorun
diff --git a/activesupport/lib/active_support/testing/isolation.rb b/activesupport/lib/active_support/testing/isolation.rb
index e16b73a036..9c52ae7768 100644
--- a/activesupport/lib/active_support/testing/isolation.rb
+++ b/activesupport/lib/active_support/testing/isolation.rb
@@ -72,16 +72,12 @@ module ActiveSupport
         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 @@ module ActiveSupport
 
           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
 
diff --git a/activesupport/lib/active_support/testing/tagged_logging.rb b/activesupport/lib/active_support/testing/tagged_logging.rb
index 9d43eb179f..f4cee64091 100644
--- a/activesupport/lib/active_support/testing/tagged_logging.rb
+++ b/activesupport/lib/active_support/testing/tagged_logging.rb
@@ -7,7 +7,7 @@ module ActiveSupport
 
       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