[PRISM] Run test setting global constant separately

This impacted other tests. Please mind the commons.

      /home/runner/work/ruby/ruby/src/test/ruby/test_compile_prism.rb:394: warning: already initialized constant Bar
      /tmp/test_reline_config_60145/bazbarbob.rb:6: warning: previous definition of Bar was here

        1) Failure:
      TestModule#test_const_get_evaled [/home/runner/work/ruby/ruby/src/test/ruby/test_module.rb:1239]:
      NameError expected but nothing was raised.

1 files changed, 14 insertions, 18 deletions

diff --git a/test/ruby/test_compile_prism.rb b/test/ruby/test_compile_prism.rb
index c1a32b84fd..2f3c2dc062 100644
--- a/test/ruby/test_compile_prism.rb
+++ b/test/ruby/test_compile_prism.rb
@@ -388,24 +388,20 @@ module Prism
     end
 
     def test_ConstantPathTargetNode
-      verbose = $VERBOSE
-      # Create some temporary nested constants
-      Object.send(:const_set, "MyFoo", Object)
-      Object.const_get("MyFoo").send(:const_set, "Bar", Object)
-
-      constant_names = ["MyBar", "MyFoo::Bar", "MyFoo::Bar::Baz"]
-      source = "#{constant_names.join(",")} = Object"
-      iseq = RubyVM::InstructionSequence.compile_prism(source)
-      $VERBOSE = nil
-      prism_eval = iseq.eval
-      $VERBOSE = verbose
-      assert_equal prism_eval, Object
-    ensure
-      ## Teardown temp constants
-      Object.const_get("MyFoo").send(:remove_const, "Bar")
-      Object.send(:remove_const, "MyFoo")
-      Object.send(:remove_const, "MyBar")
-      $VERBOSE = verbose
+      assert_separately([], <<~'RUBY')
+        verbose = $VERBOSE
+        # Create some temporary nested constants
+        Object.send(:const_set, "MyFoo", Object)
+        Object.const_get("MyFoo").send(:const_set, "Bar", Object)
+
+        constant_names = ["MyBar", "MyFoo::Bar", "MyFoo::Bar::Baz"]
+        source = "#{constant_names.join(",")} = Object"
+        iseq = RubyVM::InstructionSequence.compile_prism(source)
+        $VERBOSE = nil
+        prism_eval = iseq.eval
+        $VERBOSE = verbose
+        assert_equal prism_eval, Object
+      RUBY
     end
 
     def test_GlobalVariableTargetNode