Adding equality functionality inside of Bitwise Interpreter

src/main/scala/org/scalacoin/script/bitwise/BitwiseInterpreter.scala

@@ -0,0 +1,21 @@
+package org.scalacoin.script.bitwise
+
+import org.scalacoin.script.ScriptOperation
+
+/**
+ * Created by chris on 1/6/16.
+ */
+trait BitwiseInterpreter  {
+
+  def equal(stack : List[String], script : List[ScriptOperation]) : (List[String], List[ScriptOperation]) = {
+    require(stack.size > 1, "Stack size must be 2 or more to compare the top two values")
+    require(script.headOption.isDefined && script.head == OP_EQUAL, "Script operation must be OP_EQUAL")
+    val newStack = stack match {
+      case h :: h1 :: t => if (h == h1) "1" :: t else "0" :: t
+    }
+    (newStack,script.tail)
+
+  }
+
+  def equalVerify(stack : Seq[String], script : List[ScriptOperation]) : (Seq[String], Seq[ScriptOperation]) = ???
+}

src/test/scala/org/scalacoin/script/bitwise/BitwiseInterpreterTset.scala

@@ -0,0 +1,20 @@
+package org.scalacoin.script.bitwise
+
+import org.scalatest.{MustMatchers, FlatSpec}
+
+/**
+ * Created by chris on 1/6/16.
+ */
+class BitwiseInterpreterTest extends FlatSpec with MustMatchers with BitwiseInterpreter {
+
+  "BitwiseInterpreter" must "evaluate OP_EQUAL" in {
+    val pubKeyHash = "5238C71458E464D9FF90299ABCA4A1D7B9CB76AB".toLowerCase
+    val stack = List(pubKeyHash, pubKeyHash)
+    val script = List(OP_EQUAL)
+
+    val (newStack,newScript) = equal(stack,script)
+
+    newStack.head.toInt must be (1)
+  }
+
+}