to_der on ASN1Data should convert ruby strings into java strings befo…

…re encoding

src/test/ruby/test_asn1.rb

@@ -21,6 +21,36 @@ def test_encode_integer
     assert_equal i, OpenSSL::ASN1.decode(ai.to_der).value
   end
 
+  def test_encode_asn1_data
+    ai = OpenSSL::ASN1::ASN1Data.new(i = "bla", 0, :APPLICATION)
+    ai2 = OpenSSL::ASN1.decode(ai.to_der)
+    assert_equal :APPLICATION, ai2.tag_class
+    assert_equal 0, ai2.tag
+    assert_equal i, ai2.value
+
+    ai = OpenSSL::ASN1::ASN1Data.new(i = "bla", 4, :UNIVERSAL)
+    ai2 = OpenSSL::ASN1.decode(ai.to_der)
+    assert_equal :UNIVERSAL, ai2.tag_class
+    assert_equal 4, ai2.tag
+    assert_equal i, ai2.value
+
+    ai = OpenSSL::ASN1::ASN1Data.new(i = ["bla"], 0, :APPLICATION)
+    ai2 = OpenSSL::ASN1.decode(ai.to_der)
+    assert_equal :APPLICATION, ai2.tag_class
+    assert_equal 0, ai2.tag
+    assert_equal "bla", ai2.value
+
+    ai = OpenSSL::ASN1::ASN1Data.new(i = ["bla", "bla"], 0, :APPLICATION)
+    ai2 = OpenSSL::ASN1.decode(ai.to_der)
+    assert_equal :APPLICATION, ai2.tag_class
+    assert_equal 0, ai2.tag
+    assert_equal "blabla", ai2.value
+
+    assert_raise(ArgumentError) { OpenSSL::ASN1::ASN1Data.new(1).to_der }
+    assert_raise("no implicit conversion of Integer into String") { OpenSSL::ASN1::ASN1Data.new(1, 0, :APPLICATION).to_der }
+    assert_raise("no implicit conversion of Integer into String") { OpenSSL::ASN1::ASN1Data.new(1, 0, :CONTEXT_SPECIFIC).to_der }
+  end
+
   def test_encode_nil
     #Primitives raise TypeError, Constructives NoMethodError