* test/ruby/envutil.rb (EnvUtil.with_default_external): add for

  changing Encoding.default_external without warnings.

* test/ruby/envutil.rb (EnvUtil.with_default_internal): ditto.

* test/ruby/test_io_m17n.rb: use above with_default_external.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39721 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 24 insertions, 0 deletions

diff --git a/test/ruby/envutil.rb b/test/ruby/envutil.rb
index a8f3874e9f..98b89edd8c 100644
--- a/test/ruby/envutil.rb
+++ b/test/ruby/envutil.rb
@@ -127,6 +127,30 @@ module EnvUtil
     GC.stress = stress
   end
   module_function :under_gc_stress
+
+  def with_default_external(enc)
+    verbose, $VERBOSE = $VERBOSE, nil
+    origenc, Encoding.default_external = Encoding.default_external, enc
+    $VERBOSE = verbose
+    yield
+  ensure
+    verbose, $VERBOSE = $VERBOSE, nil
+    Encoding.default_external = origenc
+    $VERBOSE = verbose
+  end
+  module_function :with_default_external
+
+  def with_default_internal(enc)
+    verbose, $VERBOSE = $VERBOSE, nil
+    origenc, Encoding.default_internal = Encoding.default_internal, enc
+    $VERBOSE = verbose
+    yield
+  ensure
+    verbose, $VERBOSE = $VERBOSE, nil
+    Encoding.default_internal = origenc
+    $VERBOSE = verbose
+  end
+  module_function :with_default_internal
 end
 
 module Test