Create a test case that demonstrates a collision

Author: mosesn

scalafix-tests/input/src/main/scala/test/ReplaceSymbol.scala

@@ -12,6 +12,8 @@ patches.replaceSymbols = [
     to = "com.geirsson.mutable.CoolBuffer" }
   { from = "scala.collection.mutable.HashMap"
     to = "com.geirsson.mutable.unsafe.CoolMap" }
+  { from = "scala.collection.immutable.TreeMap"
+    to = "com.geirsson.immutable.SortedMap" }
   { from = "scala.math.sqrt"
     to = "com.geirsson.fastmath.sqrt" }
   // normalized symbol renames all overloaded methods
@@ -29,6 +31,8 @@ patches.replaceSymbols = [
  */
 package fix
 
+import scala.collection.immutable.SortedMap
+import scala.collection.immutable.TreeMap
 import scala.collection.mutable.HashMap
 import scala.collection.mutable.ListBuffer
 import scala.collection.mutable
@@ -42,6 +46,7 @@ object ReplaceSymbol {
   "blah".substring(1)
   "blah".substring(1, 2)
   val u: mutable.HashMap[Int, Int] = HashMap.empty[Int, Int]
+  val v: SortedMap[Int, Int] = TreeMap.empty[Int, Int]
   val x: ListBuffer[Int] = ListBuffer.empty[Int]
   val y: mutable.ListBuffer[Int] = mutable.ListBuffer.empty[Int]
   val z: scala.collection.mutable.ListBuffer[Int] =

scalafix-tests/output/src/main/scala/com/geirsson/immutable.scala

@@ -0,0 +1,11 @@
+package com.geirsson
+
+import scala.collection.immutable.TreeMap
+
+package object immutable {
+  type SortedMap[A, B] = TreeMap[A, B]
+
+  object SortedMap {
+    def empty[A : Ordering, B]: SortedMap[A, B] = TreeMap.empty[A, B]
+  }
+}

scalafix-tests/output/src/main/scala/test/ReplaceSymbol.scala

@@ -1,5 +1,6 @@
 package fix
 
+import scala.collection.immutable.SortedMap
 import com.geirsson.Future
 import com.geirsson.{ fastmath, mutable }
 import com.geirsson.mutable.{ CoolBuffer, unsafe }
@@ -13,6 +14,7 @@ object ReplaceSymbol {
   "blah".substringFrom(1)
   "blah".substringBetween(1, 2)
   val u: unsafe.CoolMap[Int, Int] = CoolMap.empty[Int, Int]
+  val v: SortedMap[Int, Int] = com.geirsson.immutable.SortedMap.empty[Int, Int]
   val x: CoolBuffer[Int] = CoolBuffer.empty[Int]
   val y: mutable.CoolBuffer[Int] = mutable.CoolBuffer.empty[Int]
   val z: com.geirsson.mutable.CoolBuffer[Int] =