diff --git a/tests/test_check.py b/tests/test_check.py
index ead0f05..fd30231 100644
--- a/tests/test_check.py
+++ b/tests/test_check.py
@@ -7,88 +7,6 @@ class TestZfsCheck(unittest2.TestCase):
     def setUp(self):
         pass
 
-    def test_blockhash(self):
-        #make VERY sure this works correctly under all circumstances.
-
-        # sha1 sums of files, (bs=4096)
-        # da39a3ee5e6b4b0d3255bfef95601890afd80709  empty
-        # 642027d63bb0afd7e0ba197f2c66ad03e3d70de1  partial
-        # 3c0bf91170d873b8e327d3bafb6bc074580d11b7  whole
-        # 2e863f1fcccd6642e4e28453eba10d2d3f74d798  whole2
-        # 959e6b58078f0cfd2fb3d37e978fda51820473ff  whole_whole2
-        # 309ffffba2e1977d12f3b7469971f30d28b94bd8  whole_whole2_partial
-
-        block_hasher=BlockHasher(count=1)
-
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/empty")),
-            []
-        )
-
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/partial")),
-            [(0, "642027d63bb0afd7e0ba197f2c66ad03e3d70de1")]
-        )
-
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/whole")),
-            [(0, "3c0bf91170d873b8e327d3bafb6bc074580d11b7")]
-        )
-
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/whole_whole2")),
-            [
-                (0, "3c0bf91170d873b8e327d3bafb6bc074580d11b7"),
-                (1, "2e863f1fcccd6642e4e28453eba10d2d3f74d798")
-            ]
-        )
-
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/whole_whole2_partial")),
-            [
-                (0, "3c0bf91170d873b8e327d3bafb6bc074580d11b7"), #whole
-                (1, "2e863f1fcccd6642e4e28453eba10d2d3f74d798"), #whole2
-                (2, "642027d63bb0afd7e0ba197f2c66ad03e3d70de1")  #partial
-            ]
-        )
-
-        block_hasher=BlockHasher(count=2)
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/whole_whole2_partial")),
-            [
-                (0, "959e6b58078f0cfd2fb3d37e978fda51820473ff"), #whole_whole2
-                (1, "642027d63bb0afd7e0ba197f2c66ad03e3d70de1")  #partial
-            ]
-        )
-
-        block_hasher=BlockHasher(count=10)
-        self.assertEqual(
-            list(block_hasher.generate("tests/data/whole_whole2_partial")),
-            [
-                (0, "309ffffba2e1977d12f3b7469971f30d28b94bd8"), #whole_whole2_partial
-            ])
-
-    def test_blockhash_compare(self):
-
-
-        block_hasher=BlockHasher(count=1)
-        generator=block_hasher.generate("tests/data/whole_whole2_partial")
-        self.assertEqual(3,block_hasher.compare("tests/data/whole_whole2_partial", generator))
-
-        block_hasher=BlockHasher(count=1)
-        with self.assertRaisesRegexp(Exception, "^Block 1 mismatched!"):
-            generator=block_hasher.generate("tests/data/whole_whole2_partial")
-            self.assertEqual(3,block_hasher.compare("tests/data/whole", generator))
-
-        block_hasher=BlockHasher(count=10)
-        generator=block_hasher.generate("tests/data/whole_whole2_partial")
-        self.assertEqual(1,block_hasher.compare("tests/data/whole_whole2_partial", generator))
-
-        #different order to make sure seek functions
-        block_hasher=BlockHasher(count=1)
-        checksums=list(block_hasher.generate("tests/data/whole_whole2_partial"))
-        checksums.reverse()
-        self.assertEqual(3,block_hasher.compare("tests/data/whole_whole2_partial", checksums))
 
     def test_volume(self):
         prepare_zpools()