assert_warn, assert_warning

* test/ruby/envutil.rb (assert_warn): add optional message argument.

* test/ruby/envutil.rb (assert_warning): moved from test_io_m17n.rb

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@34994 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 2 deletions

diff --git a/test/ruby/envutil.rb b/test/ruby/envutil.rb
index 69b037b4d8..f9e1060b62 100644
--- a/test/ruby/envutil.rb
+++ b/test/ruby/envutil.rb
@@ -179,9 +179,14 @@ module Test
         assert(status.success?, m)
       end
 
-      def assert_warn(msg)
+      def assert_warn(pat, message = nil)
+        message ||= proc {"warning message #{stderr.inspect} is expected to match #{pat.inspect}"}
         stderr = EnvUtil.verbose_warning { yield }
-        assert(msg === stderr, "warning message #{stderr.inspect} is expected to match #{msg.inspect}")
+        assert(pat === stderr, message)
+      end
+
+      def assert_warning(*args)
+        assert_warn(*args) {$VERBOSE = false; yield}
       end
 
       def assert_no_memory_leak(args, prepare, code, message=nil, limit: 1.5)