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-rw-r--r--tensorflow/python/lib/io/file_io_test.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/tensorflow/python/lib/io/file_io_test.py b/tensorflow/python/lib/io/file_io_test.py
index 0063eebb59..72931217d9 100644
--- a/tensorflow/python/lib/io/file_io_test.py
+++ b/tensorflow/python/lib/io/file_io_test.py
@@ -354,6 +354,7 @@ class FileIoTest(test.TestCase):
file_path = os.path.join(self._base_dir, "temp_file")
with file_io.FileIO(file_path, mode="r+") as f:
f.write("testing1\ntesting2\ntesting3\n\ntesting5")
+ self.assertEqual(0, f.tell())
self.assertEqual("testing1\n", f.readline())
self.assertEqual(9, f.tell())
self.assertEqual("testing2\n", f.readline())