Refactored for proper folder structure, and allowed processing of empty segments

Author: ryandecosmo

…abricks/smolder/labs/HL7FileFormat.scala …abricks/labs/smolder/HL7FileFormat.scalasrc/main/scala/com/databricks/smolder/labs/HL7FileFormat.scala renamed to src/main/scala/com/databricks/labs/smolder/HL7FileFormat.scala src/main/scala/com/databricks/smolder/labs/HL7FileFormat.scala renamed to src/main/scala/com/databricks/labs/smolder/HL7FileFormat.scala

@@ -34,9 +34,10 @@ private[smolder] object Segment {
     require(segment.nonEmpty, "Received empty segment.")
 
     // assume pipe delimited
+    //@TODO: pull delimiter from MSH segment
     val fields = segment.split('|').map(UTF8String.fromString(_))
 
-    require(fields.size > 1,
+    require(fields.size >= 1,
       "Encountered message segment with insufficient fields: %s".format(segment))
 
     Segment(fields.head, fields.tail)

…om/databricks/smolder/labs/Message.scala …om/databricks/labs/smolder/Message.scalasrc/main/scala/com/databricks/smolder/labs/Message.scala renamed to src/main/scala/com/databricks/labs/smolder/Message.scala src/main/scala/com/databricks/smolder/labs/Message.scala renamed to src/main/scala/com/databricks/labs/smolder/Message.scala

@@ -19,18 +19,18 @@ import org.scalatest.FunSuite
 
 class SegmentSuite extends FunSuite {
 
-  test("cannot parse empty segment") {
+test("cannot parse empty segment") {
     intercept[IllegalArgumentException] {
       Segment("")
     }
   }
-
-  test("cannot parse segment that only contains an ID") {
-    intercept[IllegalArgumentException] {
-      Segment("PD1")
-    }
-  }
-
+  /*
+   test("cannot parse segment that only contains an ID") {
+     intercept[IllegalArgumentException] {
+       Segment("PD1")
+     }
+   }
+ */
   test("properly parse a simple message") {
     val id = "PD1"
     val fields = Seq("",