From 32438a977357c7996a5431417b6a898f2560dd3f Mon Sep 17 00:00:00 2001
From: Markus Hauck <markus1189@gmail.com>
Date: Wed, 13 Jul 2016 08:48:21 +0200
Subject: [PATCH] Add XorT.toValidatedNel

---
 core/src/main/scala/cats/data/XorT.scala        | 3 +++
 tests/src/test/scala/cats/tests/XorTTests.scala | 6 ++++++
 2 files changed, 9 insertions(+)

diff --git a/core/src/main/scala/cats/data/XorT.scala b/core/src/main/scala/cats/data/XorT.scala
index 74ef40bd9b..4ec93aa120 100644
--- a/core/src/main/scala/cats/data/XorT.scala
+++ b/core/src/main/scala/cats/data/XorT.scala
@@ -157,6 +157,9 @@ final case class XorT[F[_], A, B](value: F[A Xor B]) {
   def toValidated(implicit F: Functor[F]): F[Validated[A, B]] =
     F.map(value)(_.toValidated)
 
+  def toValidatedNel(implicit F: Functor[F]): F[ValidatedNel[A, B]] =
+    F.map(value)(_.toValidatedNel)
+
   /** Run this value as a `[[Validated]]` against the function and convert it back to an `[[XorT]]`.
    *
    * The [[Applicative]] instance for `XorT` "fails fast" - it is often useful to "momentarily" have
diff --git a/tests/src/test/scala/cats/tests/XorTTests.scala b/tests/src/test/scala/cats/tests/XorTTests.scala
index 6e787b240f..52d86570b7 100644
--- a/tests/src/test/scala/cats/tests/XorTTests.scala
+++ b/tests/src/test/scala/cats/tests/XorTTests.scala
@@ -113,6 +113,12 @@ class XorTTests extends CatsSuite {
     }
   }
 
+  test("toValidatedNel") {
+    forAll { (xort: XorT[List, String, Int]) =>
+      xort.toValidatedNel.map(_.toXor.leftMap(_.head)) should === (xort.value)
+    }
+  }
+
   test("withValidated") {
     forAll { (xort: XorT[List, String, Int], f: String => Char, g: Int => Double) =>
       xort.withValidated(_.bimap(f, g)) should === (xort.bimap(f, g))