Add an XPath and a base64 test of serialization

Author: ashawley

jvm/src/test/scala/scala/xml/SerializationTest.scala

@@ -15,11 +15,23 @@ class SerializationTest {
     assertEquals(NodeSeq.Empty, JavaByteSerialization.roundTrip(NodeSeq.Empty))
   }
 
+  @Test
+  def unmatched: Unit = {
+    assertEquals(NodeSeq.Empty, JavaByteSerialization.roundTrip(<xml/> \ "HTML"))
+  }
+
   @Test
   def implicitConversion: Unit = {
     val parent = <parent><child></child><child/></parent>
     val children: Seq[Node] = parent.child
     val asNodeSeq: NodeSeq = children
     assertEquals(asNodeSeq, JavaByteSerialization.roundTrip(asNodeSeq))
   }
+
+  @Test
+  def base64Encode: Unit = {
+    val str = JavaByteSerialization.base64Encode(NodeSeq.Empty)
+    assertEquals("rO0ABXNy", str.take(8))
+    assertEquals("AHhweA==", str.takeRight(8))
+  }
 }