[ruby/fiddle] Add Fiddle::MemoryView#to_s (https://github.com/ruby/fiddle/pull/78)

Fix https://github.com/ruby/fiddle/pull/74

Reported by dsisnero. Thanks!!!

1 files changed, 10 insertions, 0 deletions

diff --git a/test/fiddle/test_memory_view.rb b/test/fiddle/test_memory_view.rb
index ffea8a9e59..6777a043ce 100644
--- a/test/fiddle/test_memory_view.rb
+++ b/test/fiddle/test_memory_view.rb
@@ -113,5 +113,15 @@ module Fiddle
       assert_equal([-1, -2], mview[1, 0])
       assert_equal([-7, -8], mview[1, 3])
     end
+
+    def test_to_s
+      # U+3042 HIRAGANA LETTER A
+      data = "\u{3042}"
+      ptr = Pointer[data]
+      mview = MemoryView.new(ptr)
+      string = mview.to_s
+      assert_equal([data.b, true],
+                   [string, string.frozen?])
+    end
   end
 end