spec class names can possibly be nil in mt/s < 2.6.1, so work around that

Author: tenderlove

activesupport/lib/active_support/test_case.rb

@@ -11,6 +11,12 @@
 module ActiveSupport
   class TestCase < ::MiniTest::Spec
 
+    if MiniTest::Unit::VERSION < '2.6.1'
+      class << self
+        alias :name :to_s
+      end
+    end
+
     # Use AS::TestCase for the base class when describing a model
     register_spec_type(self) do |desc|
       desc < ActiveRecord::Model