1 files changed, 25 insertions, 1 deletions
diff --git a/tensorflow/python/kernel_tests/unique_op_test.py b/tensorflow/python/kernel_tests/unique_op_test.py
index a1903887c7..a50f53b3cd 100644
--- a/tensorflow/python/kernel_tests/unique_op_test.py
+++ b/tensorflow/python/kernel_tests/unique_op_test.py
@@ -20,6 +20,7 @@ from __future__ import print_function
 
 import numpy as np
 
+from tensorflow.python.framework import dtypes
 from tensorflow.python.ops import array_ops
 from tensorflow.python.platform import test
 
@@ -37,6 +38,17 @@ class UniqueTest(test.TestCase):
     for i in range(len(x)):
       self.assertEqual(x[i], tf_y[tf_idx[i]])
 
+  def testInt32OutIdxInt64(self):
+    x = np.random.randint(2, high=10, size=7000)
+    with self.test_session() as sess:
+      y, idx = array_ops.unique(x, out_idx=dtypes.int64)
+      tf_y, tf_idx = sess.run([y, idx])
+
+    self.assertEqual(len(x), len(tf_idx))
+    self.assertEqual(len(tf_y), len(np.unique(x)))
+    for i in range(len(x)):
+      self.assertEqual(x[i], tf_y[tf_idx[i]])
+
   def testString(self):
     indx = np.random.randint(65, high=122, size=7000)
     x = [chr(i) for i in indx]
@@ -49,7 +61,6 @@ class UniqueTest(test.TestCase):
     for i in range(len(x)):
       self.assertEqual(x[i], tf_y[tf_idx[i]].decode('ascii'))
 
-
 class UniqueWithCountsTest(test.TestCase):
 
   def testInt32(self):
@@ -65,6 +76,19 @@ class UniqueWithCountsTest(test.TestCase):
     for value, count in zip(tf_y, tf_count):
       self.assertEqual(count, np.sum(x == value))
 
+  def testInt32OutIdxInt64(self):
+    x = np.random.randint(2, high=10, size=7000)
+    with self.test_session() as sess:
+      y, idx, count = array_ops.unique_with_counts(x, out_idx=dtypes.int64)
+      tf_y, tf_idx, tf_count = sess.run([y, idx, count])
+
+    self.assertEqual(len(x), len(tf_idx))
+    self.assertEqual(len(tf_y), len(np.unique(x)))
+    for i in range(len(x)):
+      self.assertEqual(x[i], tf_y[tf_idx[i]])
+    for value, count in zip(tf_y, tf_count):
+      self.assertEqual(count, np.sum(x == value))
+
   def testString(self):
     indx = np.random.randint(65, high=122, size=7000)
     x = [chr(i) for i in indx]