Merge pull request #2220 from yui-knk/refactor-test

Refactoring test to use assert_nothing_raised.

test/t/exception.rb

@@ -345,13 +345,13 @@ assert('Exception#inspect without message') do
 end
 
 assert('Exception#backtrace') do
+  assert_nothing_raised do
     begin
       raise "get backtrace"
     rescue => e
       e.backtrace
     end
-
-  true
+  end
 end
 
 assert('Raise in ensure') do

test/t/string.rb

@@ -476,7 +476,11 @@ assert('String#upcase!', '15.2.10.5.43') do
 end
 
 assert('String#inspect', '15.2.10.5.46') do
-  ("\1" * 100).inspect  # should not raise an exception - regress #1210
+  # should not raise an exception - regress #1210
+  assert_nothing_raised do
+  ("\1" * 100).inspect
+  end
+
   assert_equal "\"\\000\"", "\0".inspect
 end