Test to check extract of gnu-tar file with multiple files and volumes

diff --git a/testing/test_multivol.py b/testing/test_multivol.py
index 688bd41..45157d4 100644 (file)
--- a/testing/test_multivol.py
+++ b/testing/test_multivol.py
@@ -249,6 +249,41 @@ class MultivolGnuFormatTest(unittest.TestCase):
         assert os.path.exists("big")
         assert hash == self.md5sum("big")
 
+    def test_volume_extract3(self):
+        '''
+        Create a multivolume tar file with gnu tar command with multiple
+        files, extract it with tarfile library
+        '''
+        # create the content of the file to compress and hash it
+        hash = dict()
+        hash["big"] = self.create_file("big", 5*1024*1024)
+        hash["small"] = self.create_file("small", 100)
+        hash["small2"] = self.create_file("small2", 354)
+
+        # create the tar file with volumes
+        os.system("tar cM --format=%s -L 3M big small small2 --file=sample.tar "\
+            "--file=sample.tar.1" % self.tar_command_format)
+
+        # check that the tar volumes were correctly created
+        assert os.path.exists("sample.tar")
+        assert os.path.exists("sample.tar.1")
+        assert not os.path.exists("sample.tar.2")
+
+        for key, value in hash.iteritems():
+            os.unlink(key)
+            assert not os.path.exists(key)
+
+        # extract and check output
+        tarobj = TarFile.open("sample.tar",
+                              mode="r",
+                              new_volume_handler=new_volume_handler)
+        tarobj.extractall()
+        tarobj.close()
+
+        for key, value in hash.iteritems():
+            assert os.path.exists(key)
+            assert value == self.md5sum(key)
+
     def test_multivol_multifile_extract(self):
         '''
         create a multivolume tar file with multiple files and extracts it