[fix] initialize @unused_bits = 0 for BitString

Author: kares

src/main/java/org/jruby/ext/openssl/ASN1.java

@@ -1574,16 +1574,21 @@ static void initializeImpl(final ThreadContext context,
 
             // NOTE: Primitive only
             final String baseName = self.getMetaClass().getRealClass().getBaseName();
-            if ( "ObjectId".equals( baseName ) ) {
-                final String name;
-                try {
-                    name = oid2Sym( runtime, getObjectID(runtime, value.toString()), true );
-                }
-                catch (IllegalArgumentException e) {
-                    // e.g. in case of nil "string  not an OID"
-                    throw runtime.newTypeError(e.getMessage());
-                }
-                if ( name != null ) value = runtime.newString(name);
+            switch (baseName) {
+                case "ObjectId":
+                    final String name;
+                    try {
+                        name = oid2Sym( runtime, getObjectID(runtime, value.toString()), true );
+                    }
+                    catch (IllegalArgumentException e) {
+                        // e.g. in case of nil "string  not an OID"
+                        throw runtime.newTypeError(e.getMessage());
+                    }
+                    if ( name != null ) value = runtime.newString(name);
+                    break;
+                case "BitString":
+                    self.setInstanceVariable("@unused_bits", runtime.newFixnum(0));
+                    break;
             }
 
             self.setInstanceVariable("@tag", tag);

src/test/ruby/test_asn1.rb

@@ -1162,14 +1162,11 @@ def test_decode
     #assert_equal calulated_sig, sig_val.value
   end
 
-  # This is from the upstream MRI tests, might be superseded by `test_bit_string_infinite_length`?
+  # This is from the upstream MRI tests
   def test_bitstring
-    # TODO: Import Issue
-    # fails <nil> expected but was <0> 
-    #encode_decode_test B(%w{ 03 01 00 }), OpenSSL::ASN1::BitString.new(B(%w{}))
-    # TODO: Import Issue
-    # fails with <nil> expected but was <0>
-    #encode_decode_test B(%w{ 03 02 00 01 }), OpenSSL::ASN1::BitString.new(B(%w{ 01 }))
+    encode_decode_test B(%w{ 03 01 00 }), OpenSSL::ASN1::BitString.new(B(%w{}))
+    encode_decode_test B(%w{ 03 02 00 01 }), OpenSSL::ASN1::BitString.new(B(%w{ 01 }))
+
     obj = OpenSSL::ASN1::BitString.new(B(%w{ F0 }))
     obj.unused_bits = 4
     encode_decode_test B(%w{ 03 02 04 F0 }), obj