From 19d30c170e65c6a2aa66404333b266c78fd74bc6 Mon Sep 17 00:00:00 2001
From: Marcus Brinkmann <m.brinkmann@semantics.de>
Date: Thu, 17 Nov 2016 13:43:11 +0100
Subject: [PATCH] Test for libtiff, n_frames and seek.

---
 Tests/test_file_libtiff.py | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/Tests/test_file_libtiff.py b/Tests/test_file_libtiff.py
index 6e40d4b37..04b36f8df 100644
--- a/Tests/test_file_libtiff.py
+++ b/Tests/test_file_libtiff.py
@@ -399,6 +399,19 @@ class TestFileLibTiff(LibTiffTestCase):
 
         TiffImagePlugin.READ_LIBTIFF = False
 
+    def test_multipage_nframes(self):
+        # issue #862
+        TiffImagePlugin.READ_LIBTIFF = True
+        im = Image.open('Tests/images/multipage.tiff')
+        frames = im.n_frames
+        self.assertEqual(frames, 3)
+        for idx in range(frames):
+            im.seek(0)
+            # Should not raise ValueError: I/O operation on closed file
+            im.load()
+
+        TiffImagePlugin.READ_LIBTIFF = False
+
     def test__next(self):
         TiffImagePlugin.READ_LIBTIFF = True
         im = Image.open('Tests/images/hopper.tif')
@@ -521,7 +534,7 @@ class TestFileLibTiff(LibTiffTestCase):
         except:
             self.fail("Should not get permission error here")
 
-    
+
 
 
 if __name__ == '__main__':