Add failing test about Array#pack returning a string with the wrong encoding.
--- MacRuby/trunk/test_vm/encoding.rb 2010-05-26 20:30:25 UTC (rev 4163)
+++ MacRuby/trunk/test_vm/encoding.rb 2010-05-26 20:30:35 UTC (rev 4164)
@@ -1,3 +1,5 @@
assert "US-ASCII", "File.open('../Rakefile', 'r:US-ASCII') {|f| puts f.read.encoding.name }"
assert ":ok", "puts ':ok'.encode('US-ASCII')"
+
+assert "true", "p [].pack('U*').encoding.name == 'UTF-8'"
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