https://git.ruby-lang.org/ruby.git/commit/?id=0f03c1433e

From 0f03c1433ef6a17acd64f4dc4a539b4630e975aa Mon Sep 17 00:00:00 2001
From: Koichi Sasada <ko1@a...>
Date: Tue, 28 Jan 2020 14:44:12 +0900
Subject: support multi-run for test/ruby/test_primitive.rb

need to redefine some classes.

diff --git a/test/ruby/test_primitive.rb b/test/ruby/test_primitive.rb
index 19af44a..f1db934 100644
--- a/test/ruby/test_primitive.rb
+++ b/test/ruby/test_primitive.rb
@@ -26,24 +26,31 @@ class TestRubyPrimitive < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_primitive.rb#L26
     assert_equal 4, c
   end
 
-  C = 1
-  class A
-    Const = 1
-    class B
-      Const = 2
-      class C
-        Const = 3
-        def const
-          Const
+  C_Setup = -> do
+    remove_const :C if defined? ::TestRubyPrimitive::C
+    remove_const :A if defined? ::TestRubyPrimitive::A
+
+    C = 1
+    class A
+      Const = 1
+      class B
+        Const = 2
+        class C
+          Const = 3
+          def const
+            Const
+          end
         end
       end
     end
+    (1..2).map {
+      A::B::C::Const
+    }
   end
-  (1..2).map {
-    A::B::C::Const
-  }
 
   def test_constant
+    C_Setup.call
+
     assert_equal 1, C
     assert_equal 1, C
     assert_equal 1, A::Const
@@ -145,42 +152,60 @@ class TestRubyPrimitive < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_primitive.rb#L152
     assert_equal 7, ($test_ruby_primitive_gvar = 7)
   end
 
-  class A7
-    @@c = 1
-    def m
-      @@c += 1
+  A7_Setup = -> do
+    remove_const :A7 if defined? TestRubyPrimitive::A7
+
+    class A7
+      @@c = 1
+      def m
+        @@c += 1
+      end
     end
   end
 
   def test_cvar_from_instance_method
+    A7_Setup.call
+
     assert_equal 2, A7.new.m
     assert_equal 3, A7.new.m
     assert_equal 4, A7.new.m
   end
 
-  class A8
-    @@c = 1
-    class << self
-      def m
-        @@c += 1
+  A8_Setup = -> do
+    remove_const :A8 if defined? TestRubyPrimitive::A8
+
+    class A8
+      @@c = 1
+      class << self
+        def m
+          @@c += 1
+        end
       end
     end
   end
 
   def test_cvar_from_singleton_method
+    A8_Setup.call
+
     assert_equal 2, A8.m
     assert_equal 3, A8.m
     assert_equal 4, A8.m
   end
 
-  class A9
-    @@c = 1
-    def self.m
-      @@c += 1
+  A9_Setup = -> do
+    remove_const :A8 if defined? TestRubyPrimitive::A8
+
+    class A9
+      @@c = 1
+      def self.m
+        @@c += 1
+      end
     end
   end
 
   def test_cvar_from_singleton_method2
+    A9_Setup.call
+
     assert_equal 2, A9.m
     assert_equal 3, A9.m
     assert_equal 4, A9.m
@@ -199,6 +224,9 @@ class TestRubyPrimitive < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_primitive.rb#L224
     @iv += 2
     assert_equal 4, @iv
 
+    # init @@cv
+    @@cv = nil
+
     @@cv ||= 1
     assert_equal 1, @@cv
     @@cv &&= 2
-- 
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