Force encoding to ASCII-8BIT

We allow this since the library requires Ruby 1.9+

Author: mtodd

lib/net/ber/core_ext/true_class.rb

@@ -6,6 +6,6 @@ module Net::BER::Extensions::TrueClass
   # Converts +true+ to the BER wireline representation of +true+.
   def to_ber
     # http://tools.ietf.org/html/rfc4511#section-5.1
-    "\001\001\xFF"
+    "\001\001\xFF".force_encoding("ASCII-8BIT")
   end
 end

test/ber/test_ber.rb

@@ -14,7 +14,7 @@ def test_array
 
   # http://tools.ietf.org/html/rfc4511#section-5.1
   def test_true
-    assert_equal "\x01\x01\xFF", true.to_ber
+    assert_equal "\x01\x01\xFF".b, true.to_ber
   end
 
   def test_false