File remove_nose.patch of Package python-bloscpack

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File remove_nose.patch of Package python-bloscpack (Revision 69295f6ebd83069ac5d127057b0280c9)

Currently displaying revision 69295f6ebd83069ac5d127057b0280c9 , Show latest

---
 bloscpack/testutil.py |    3 +--
 test/test_headers.py  |    2 +-
 2 files changed, 2 insertions(+), 3 deletions(-)

--- a/bloscpack/testutil.py
+++ b/bloscpack/testutil.py
@@ -62,7 +62,7 @@ def create_tmp_files():
     dcmp_file = path.join(tdir, 'file.dcmp')
     # register the temp dir remover, safeguard against abort
     atexit.register(atexit_tmpremover, tdir)
-    yield tdir, in_file, out_file, dcmp_file
+    tdir(in_file, out_file, dcmp_file)
     # context manager remover
     shutil.rmtree(tdir)
 
@@ -74,7 +74,6 @@ def cmp_file(file1, file2):
 
 
 def cmp_fp(fp1, fp2):
-    import nose.tools as nt  # nose is a testing dependency
     chunk_size = reverse_pretty(DEFAULT_CHUNK_SIZE)
     while True:
         a = fp1.read(chunk_size)
@@ -82,4 +81,4 @@ def cmp_fp(fp1, fp2):
         if a == b'' and b == b'':
             return True
         else:
-            nt.assert_equal(a, b)
+            assert a == b
--- a/test/test_headers.py
+++ b/test/test_headers.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
@@ -6,9 +5,8 @@
 import struct
 import sys
 
-
-import nose.tools as nt
-from nose.plugins.skip import SkipTest
+import pytest
+from unittest import SkipTest
 import blosc
 import numpy as np
 
@@ -39,9 +37,12 @@ from bloscpack.headers import (Bloscpack
 
 
 def test_check_range():
-    nt.assert_raises(TypeError,  check_range, 'test', 'a', 0, 1)
-    nt.assert_raises(ValueError, check_range, 'test', -1, 0, 1)
-    nt.assert_raises(ValueError, check_range, 'test', 2, 0, 1)
+    with pytest.raises(TypeError):
+        check_range('test', 'a', 0, 1)
+    with pytest.raises(ValueError):
+        check_range('test', -1, 0, 1)
+    with pytest.raises(ValueError):
+        check_range('test', 2, 0, 1)
 
 
 def test_create_options():
@@ -57,7 +58,7 @@ def test_create_options():
             ('00000001', {'offsets': True, 'metadata': False}),
             ('00000011', {'offsets': True, 'metadata': True}),
             ]:
-        yield nt.assert_equal, expected_options, create_options(**kwargs)
+        assert expected_options == create_options(**kwargs)
 
 
 def test_decode_options():
@@ -67,7 +68,7 @@ def test_decode_options():
             ({'metadata': True, 'offsets': False}, '00000010'),
             ({'metadata': True, 'offsets': True}, '00000011'),
             ]:
-        yield nt.assert_equal, expected, decode_options(input)
+        assert expected == decode_options(input)
 
 
 def test_decode_options_exceptions():
@@ -81,7 +82,8 @@ def test_decode_options_exceptions():
             '00001100',
             '11111100',
             ]:
-        yield nt.assert_raises, ValueError, decode_options, broken_input
+        with pytest.raises(ValueError):
+            decode_options(broken_input)
 
 
 def test_check_options_exceptions():
@@ -90,7 +92,9 @@ def test_check_options_exceptions():
             0,
             1,
             ]:
-        yield nt.assert_raises, TypeError, check_options, broken_input
+        with pytest.raises(TypeError):
+            check_options(broken_input)
+
     for broken_input in [
             # check for lengths too small and too large
             '0',
@@ -103,15 +107,16 @@ def test_check_options_exceptions():
             '0000000a',
             'aaaaaaaa',
             ]:
-        yield nt.assert_raises, ValueError, check_options, broken_input
+        with pytest.raises(ValueError):
+            check_options(broken_input)
 
 
 def test_create_metadata_options():
-    nt.assert_equal('00000000', create_metadata_options())
+    assert '00000000' == create_metadata_options()
 
 
 def test_decode_metadata_options():
-    nt.assert_equal({}, decode_metadata_options('00000000'))
+    assert {} == decode_metadata_options('00000000')
 
 
 def test_decode_metadata_options_exceptions():
@@ -125,7 +130,8 @@ def test_decode_metadata_options_excepti
             '00001111',
             '11111111',
             ]:
-        yield nt.assert_raises, ValueError, decode_metadata_options, broken_input
+        with pytest.raises(ValueError):
+            decode_metadata_options(broken_input)
 
 
 def test_decode_blosc_header_basic():
@@ -139,7 +145,7 @@ def test_decode_blosc_header_basic():
                 'nbytes': len(array_),
                 'typesize': blosc_args.typesize}
     header_slice = dict((k, header[k]) for k in expected.keys())
-    nt.assert_equal(expected, header_slice)
+    assert expected == header_slice
 
 
 def test_decode_blosc_header_deactivate_shuffle():
@@ -154,7 +160,7 @@ def test_decode_blosc_header_deactivate_
                 'nbytes': len(array_),
                 'typesize': blosc_args.typesize}
     header_slice = dict((k, header[k]) for k in expected.keys())
-    nt.assert_equal(expected, header_slice)
+    assert expected == header_slice
 
 
 def test_decode_blosc_header_uncompressible_data():
@@ -171,7 +177,7 @@ def test_decode_blosc_header_uncompressi
                 'flags': 0x13,  # 1 for shuffle 2 for non-compressed 4 for small blocksize
                 'nbytes': len(array_),
                 'typesize': blosc_args.typesize}
-    nt.assert_equal(expected, header)
+    assert expected == header
 
 
 def test_decode_blosc_header_uncompressible_data_dont_split_false():
@@ -190,7 +196,7 @@ def test_decode_blosc_header_uncompressi
         'nbytes': len(array_),
         'typesize': blosc_args.typesize
     }
-    nt.assert_equal(expected, header)
+    assert expected == header
 
 
 def test_decode_blosc_flags():
@@ -216,16 +222,13 @@ def test_decode_blosc_flags():
             (0b01100000, {'codec': 'zlib'}),
             (0b10000000, {'codec': 'zstd'}),
             ]:
-        yield (nt.assert_equal,
-               decode_blosc_flags(input_byte),
-               gen_expected(new_params))
+        assert decode_blosc_flags(input_byte) == gen_expected(new_params)
 
 
 def test_BloscPackHeader_constructor_exceptions():
-    # uses nose test generators
-
     def check(error_type, args_dict):
-        nt.assert_raises(error_type, BloscpackHeader, **args_dict)
+        with pytest.raises(error_type):
+            BloscpackHeader(**args_dict)
 
     for error_type, args_dict in [
             (ValueError, {'format_version': -1}),
@@ -260,7 +263,7 @@ def test_BloscPackHeader_constructor_exc
             (ValueError, {'chunk_size': 1,
                           'last_chunk': 2}),
             ]:
-        yield check, error_type, args_dict
+        check(error_type, args_dict)
 
 
 def test_BloscPackHeader_total_prospective_entries():
@@ -277,7 +280,7 @@ def test_BloscPackHeader_total_prospecti
             ]:
         header = BloscpackHeader(nchunks=nchunks,
                                  max_app_chunks=max_app_chunks)
-        yield nt.assert_equal, expected, header.total_prospective_chunks
+        assert expected == header.total_prospective_chunks
 
 
 def test_BloscpackHeader_encode():
@@ -294,7 +297,7 @@ def test_BloscpackHeader_encode():
             raw[offset+len(replacement):]
 
     # test with no arguments
-    yield nt.assert_equal, raw, BloscpackHeader().encode()
+    assert raw == BloscpackHeader().encode()
 
     for offset, replacement, kwargs in [
             (4, struct.pack('<B', 23), {'format_version': 23}),
@@ -338,7 +341,7 @@ def test_BloscpackHeader_encode():
             (16, b'\x01\x00\x00\x00\x00\x00\x00\x00\xfe\xff\xff\xff\xff\xff\xff\x7f',
                 {'nchunks': 1, 'max_app_chunks': MAX_CHUNKS-1}),
             ]:
-        yield nt.assert_equal, mod_raw(offset, replacement), \
+        assert mod_raw(offset, replacement) == \
             BloscpackHeader(**kwargs).encode()
 
 
@@ -354,7 +357,7 @@ def test_BloscpackHeader_decode():
             raw[offset+len(replacement):]
 
     # check with no args
-    yield nt.assert_equal, BloscpackHeader(), BloscpackHeader.decode(raw)
+    assert BloscpackHeader() == BloscpackHeader.decode(raw)
 
     for kwargs, offset, replacement in [
             # check with format_version
@@ -404,27 +407,21 @@ def test_BloscpackHeader_decode():
             ({'nchunks': 1, 'max_app_chunks': MAX_CHUNKS-1},
                 16, b'\x01\x00\x00\x00\x00\x00\x00\x00\xfe\xff\xff\xff\xff\xff\xff\x7f'),
             ]:
-        yield (nt.assert_equal,
-               BloscpackHeader(**kwargs),
-               BloscpackHeader.decode(mod_raw(offset, replacement)))
+        assert BloscpackHeader(**kwargs) == \
+               BloscpackHeader.decode(mod_raw(offset, replacement))
 
 
 def test_BloscpackHeader_accessor_exceptions():
     if sys.version_info[0:2] < (2, 7):
         raise SkipTest
     bloscpack_header = BloscpackHeader()
-    nt.assert_raises_regexp(KeyError,
-                            'foo not in BloscpackHeader',
-                            bloscpack_header.__getitem__,
-                            'foo')
-    nt.assert_raises_regexp(KeyError,
-                            'foo not in BloscpackHeader',
-                            bloscpack_header.__setitem__,
-                            'foo', 'bar')
-    nt.assert_raises_regexp(NotImplementedError,
-                            'BloscpackHeader does not support __delitem__ or derivatives',
-                            bloscpack_header.__delitem__,
-                            'foo',)
+    with pytest.raises(KeyError, match='foo not in BloscpackHeader'):
+        bloscpack_header.__getitem__('foo')
+    with pytest.raises(KeyError, match='foo not in BloscpackHeader'):
+        bloscpack_header.__setitem__('foo', 'bar')
+    with pytest.raises(NotImplementedError,
+                              match='BloscpackHeader does not support __delitem__ or derivatives'):
+        bloscpack_header.__delitem__('foo')
 
 
 def test_MetadataHeader_encode():
@@ -432,7 +429,7 @@ def test_MetadataHeader_encode():
           b'\x00\x00\x00\x00\x00\x00\x00\x00'\
           b'\x00\x00\x00\x00\x00\x00\x00\x00'\
           b'\x00\x00\x00\x00\x00\x00\x00\x00'
-    yield nt.assert_equal, raw, MetadataHeader().encode()
+    assert raw == MetadataHeader().encode()
 
     def mod_raw(offset, value):
         return raw[0:offset] + value + \
@@ -451,7 +448,7 @@ def test_MetadataHeader_encode():
             (20, b'\xff\xff\xff\xff', {'meta_comp_size': MAX_META_SIZE}),
             (24, b'sesame', {'user_codec': b'sesame'}),
             ]:
-        yield nt.assert_equal, mod_raw(offset, replacement), \
+        assert mod_raw(offset, replacement) == \
             MetadataHeader(**kwargs).encode()
 
 
@@ -481,7 +478,7 @@ def test_MetadataHeader_decode():
         return no_arg_input[0:offset] + value + \
             no_arg_input[offset+len(value):]
 
-    yield nt.assert_equal, no_arg_return, MetadataHeader.decode(no_arg_input)
+    assert no_arg_return == MetadataHeader.decode(no_arg_input)
 
     for attribute, value, offset, replacement in [
             ('magic_format', b'JSON', 0, b'JSON'),
@@ -496,5 +493,5 @@ def test_MetadataHeader_decode():
             ('meta_comp_size', MAX_META_SIZE, 20, b'\xff\xff\xff\xff'),
             ('user_codec', b'sesame', 24, b'sesame'),
             ]:
-        yield nt.assert_equal, copy_and_set_return(attribute, value), \
+        assert copy_and_set_return(attribute, value) == \
             MetadataHeader.decode(copy_and_set_input(offset, replacement))
--- a/setup.py
+++ b/setup.py
@@ -3,7 +3,6 @@
 # flake8: noqa
 
 from setuptools import setup
-import sys
 import io
 
 with io.open('README.rst', encoding='utf-8') as f:
@@ -20,7 +19,7 @@ install_requires = [
 ]
 
 tests_require = [
-    'nose',
+    'pytest',
     'cram>=0.6',
     'mock',
     'coverage',
--- a/test/test_append.py
+++ b/test/test_append.py
@@ -1,10 +1,9 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
 
 import blosc
-import nose.tools as nt
+import pytest
 import numpy as np
 
 
@@ -105,8 +104,8 @@ def test_append_fp():
             max_app_chunks=160,
             )
     expected_orig_offsets = [1440]
-    nt.assert_equal(expected_orig_bloscpack_header, orig_bloscpack_header)
-    nt.assert_equal(expected_orig_offsets[0], orig_offsets[0])
+    assert expected_orig_bloscpack_header == orig_bloscpack_header
+    assert expected_orig_offsets[0] == orig_offsets[0]
 
     # perform the append
     reset_append_fp(orig, new, new_size)
@@ -126,8 +125,8 @@ def test_append_fp():
             'metadata': False
     }
     expected_app_offsets = [1440]
-    nt.assert_equal(expected_app_bloscpack_header, app_bloscpack_header)
-    nt.assert_equal(expected_app_offsets[0], app_offsets[0])
+    assert expected_app_bloscpack_header == app_bloscpack_header
+    assert expected_app_offsets[0] == app_offsets[0]
 
     # now check by unpacking
     source = CompressedFPSource(orig)
@@ -137,8 +136,8 @@ def test_append_fp():
     new.seek(0)
     new_str = new.read()
     dcmp_str = dcmp.read()
-    nt.assert_equal(len(dcmp_str), len(new_str * 2))
-    nt.assert_equal(dcmp_str, new_str * 2)
+    assert len(dcmp_str) == len(new_str * 2)
+    assert dcmp_str == new_str * 2
 
     ## TODO
     # * check additional aspects of file integrity
@@ -154,8 +153,8 @@ def test_append():
         unpack_file_from_file(out_file, dcmp_file)
         in_content = open(in_file, 'rb').read()
         dcmp_content = open(dcmp_file, 'rb').read()
-        nt.assert_equal(len(dcmp_content), len(in_content) * 2)
-        nt.assert_equal(dcmp_content, in_content * 2)
+        assert len(dcmp_content) == len(in_content) * 2
+        assert dcmp_content == in_content * 2
 
 
 def test_append_into_last_chunk():
@@ -175,13 +174,13 @@ def test_append_into_last_chunk():
     new.seek(0)
     nchunks = reset_append_fp(orig, StringIO(new_content[:1023]), 1023)
     bloscpack_header = reset_read_beginning(orig)[0]
-    nt.assert_equal(nchunks, 1)
-    nt.assert_equal(bloscpack_header['last_chunk'], 1023)
+    assert nchunks == 1
+    assert bloscpack_header['last_chunk'] == 1023
     # now append into that last chunk
     nchunks = reset_append_fp(orig, StringIO(new_content[:1023]), 1023)
     bloscpack_header = reset_read_beginning(orig)[0]
-    nt.assert_equal(nchunks, 0)
-    nt.assert_equal(bloscpack_header['last_chunk'], 2046)
+    assert nchunks == 0
+    assert bloscpack_header['last_chunk'] == 2046
 
     # now check by unpacking
     source = CompressedFPSource(orig)
@@ -191,8 +190,8 @@ def test_append_into_last_chunk():
     new.seek(0)
     new_str = new.read()
     dcmp_str = dcmp.read()
-    nt.assert_equal(len(dcmp_str), len(new_str) + 2046)
-    nt.assert_equal(dcmp_str, new_str + new_str[:1023] * 2)
+    assert len(dcmp_str) == len(new_str) + 2046
+    assert dcmp_str == new_str + new_str[:1023] * 2
 
 
 def test_append_single_chunk():
@@ -210,25 +209,25 @@ def test_append_single_chunk():
     # append a single chunk
     reset_append_fp(orig, new, new_size)
     bloscpack_header = reset_read_beginning(orig)[0]
-    nt.assert_equal(bloscpack_header['nchunks'], 2)
+    assert bloscpack_header['nchunks'] == 2
 
     # append a large content, that amounts to two chunks
     new_content = new.read()
     new.seek(0)
     reset_append_fp(orig, StringIO(new_content * 2), new_size * 2)
     bloscpack_header = reset_read_beginning(orig)[0]
-    nt.assert_equal(bloscpack_header['nchunks'], 4)
+    assert bloscpack_header['nchunks'] == 4
 
     # append half a chunk
     reset_append_fp(orig, StringIO(new_content[:len(new_content)]), new_size//2)
     bloscpack_header = reset_read_beginning(orig)[0]
-    nt.assert_equal(bloscpack_header['nchunks'], 5)
+    assert bloscpack_header['nchunks'] == 5
 
     # append a few bytes
     reset_append_fp(orig, StringIO(new_content[:1023]), 1024)
     # make sure it is squashed into the lat chunk
     bloscpack_header = reset_read_beginning(orig)[0]
-    nt.assert_equal(bloscpack_header['nchunks'], 5)
+    assert bloscpack_header['nchunks'] == 5
 
 
 def test_double_append():
@@ -241,8 +240,8 @@ def test_double_append():
     unpack(source, sink)
     dcmp.seek(0)
     dcmp_str = dcmp.read()
-    nt.assert_equal(len(dcmp_str), len(new_str) * 3)
-    nt.assert_equal(dcmp_str, new_str * 3)
+    assert len(dcmp_str) == len(new_str) * 3
+    assert dcmp_str == new_str * 3
 
 
 def test_append_metadata():
@@ -267,20 +266,22 @@ def test_append_metadata():
     new.seek(0)
     new_str = new.read()
     dcmp_str = dcmp.read()
-    nt.assert_equal(len(dcmp_str), len(new_str) * 2)
-    nt.assert_equal(dcmp_str, new_str * 2)
+    assert len(dcmp_str) == len(new_str) * 2
+    assert dcmp_str == new_str * 2
 
 
 def test_append_fp_no_offsets():
     bloscpack_args = BloscpackArgs(offsets=False)
     orig, new, new_size, dcmp = prep_array_for_append(bloscpack_args=bloscpack_args)
-    nt.assert_raises(RuntimeError, append_fp, orig, new, new_size)
+    with pytest.raises(RuntimeError):
+        append_fp(orig, new, new_size)
 
 
 def test_append_fp_not_enough_space():
     bloscpack_args = BloscpackArgs(max_app_chunks=0)
     orig, new, new_size, dcmp = prep_array_for_append(bloscpack_args=bloscpack_args)
-    nt.assert_raises(NotEnoughSpace, append_fp, orig, new, new_size)
+    with pytest.raises(NotEnoughSpace):
+        append_fp(orig, new, new_size)
 
 
 def test_mixing_clevel():
@@ -293,7 +294,7 @@ def test_mixing_clevel():
     orig.seek(0)
     # get a backup of the settings
     bloscpack_header, metadata, metadata_header, offsets = \
-            reset_read_beginning(orig)
+        reset_read_beginning(orig)
     # compressed size of the last chunk, including checksum
     last_chunk_compressed_size = orig_size - offsets[-1]
 
@@ -316,7 +317,7 @@ def test_mixing_clevel():
     #  * nchunks + 1 times the blosc and checksum overhead
     appended_size = new_size + bloscpack_header['last_chunk'] + (nchunks+1) * (16 + 4)
     # final size should be original plus appended data
-    nt.assert_equal(final_size, appended_size + discounted_orig_size)
+    assert final_size == appended_size + discounted_orig_size
 
     # check by unpacking
     source = CompressedFPSource(orig)
@@ -326,8 +327,8 @@ def test_mixing_clevel():
     new.seek(0)
     new_str = new.read()
     dcmp_str = dcmp.read()
-    nt.assert_equal(len(dcmp_str), len(new_str * 2))
-    nt.assert_equal(dcmp_str, new_str * 2)
+    assert len(dcmp_str) == len(new_str * 2)
+    assert dcmp_str == new_str * 2
 
 
 def test_append_mix_shuffle():
@@ -360,8 +361,8 @@ def test_append_mix_shuffle():
     dcmp_str = dcmp.read()
 
     # now sanity check the length and content of the decompressed
-    nt.assert_equal(len(dcmp_str), len(new_str) + to_append_fp_size)
-    nt.assert_equal(dcmp_str, new_str + to_append.tostring())
+    assert len(dcmp_str) == len(new_str) + to_append_fp_size
+    assert dcmp_str == new_str + to_append.tostring()
 
     # now get the first and the last chunk and check that the shuffle doesn't
     # match
@@ -376,9 +377,9 @@ def test_append_mix_shuffle():
         _read_compressed_chunk_fp(orig, checksum_impl)
     decompressed_last = blosc.decompress(compressed_last)
     # first chunk has shuffle active
-    nt.assert_equal(blosc_header_zero['flags'], 1)
+    assert blosc_header_zero['flags'] == 1
     # last chunk doesn't
-    nt.assert_equal(blosc_header_last['flags'], 0)
+    assert blosc_header_last['flags'] == 0
 
 
 def test_recreate_metadata():
@@ -393,21 +394,12 @@ def test_recreate_metadata():
                                      user_codec=b'',
                                      )
     header_dict = old_meta_header
-    nt.assert_raises(NoSuchSerializer,
-                     _recreate_metadata,
-                     header_dict,
-                     '',
-                     magic_format='NOSUCHSERIALIZER')
-    nt.assert_raises(NoSuchCodec,
-                     _recreate_metadata,
-                     header_dict,
-                     '',
-                     codec='NOSUCHCODEC')
-    nt.assert_raises(ChecksumLengthMismatch,
-                     _recreate_metadata,
-                     header_dict,
-                     '',
-                     checksum='adler32')
+    with pytest.raises(NoSuchSerializer):
+        _recreate_metadata(header_dict, '', magic_format='NOSUCHSERIALIZER')
+    with pytest.raises(NoSuchCodec):
+        _recreate_metadata(header_dict, '', codec='NOSUCHCODEC')
+    with pytest.raises(ChecksumLengthMismatch):
+        _recreate_metadata(header_dict, '', checksum='adler32')
 
 
 def test_rewrite_metadata():
@@ -426,8 +418,8 @@ def test_rewrite_metadata():
     # write the metadata section
     _write_metadata(target_fp, test_metadata, metadata_args)
     # check that the length is correct
-    nt.assert_equal(METADATA_HEADER_LENGTH + metadata_args.max_meta_size,
-                    len(target_fp.getvalue()))
+    assert METADATA_HEADER_LENGTH + metadata_args.max_meta_size == \
+        len(target_fp.getvalue())
 
     # now add stuff to the metadata
     test_metadata['container'] = 'numpy'
@@ -442,20 +434,20 @@ def test_rewrite_metadata():
     # correctly
     target_fp.seek(0, 0)
     result_metadata, result_header = _read_metadata(target_fp)
-    nt.assert_equal(test_metadata, result_metadata)
-    nt.assert_equal(new_metadata_length, result_header.meta_comp_size)
+    assert test_metadata == result_metadata
+    assert new_metadata_length == result_header.meta_comp_size
 
     # make sure that NoChangeInMetadata is raised
     target_fp.seek(0, 0)
-    nt.assert_raises(NoChangeInMetadata, _rewrite_metadata_fp,
-                     target_fp, test_metadata, codec=None, level=None)
+    with pytest.raises(NoChangeInMetadata):
+        _rewrite_metadata_fp(target_fp, test_metadata, codec=None, level=None)
 
     # make sure that ChecksumLengthMismatch is raised, needs modified metadata
     target_fp.seek(0, 0)
     test_metadata['fluxcompensator'] = 'back to the future'
-    nt.assert_raises(ChecksumLengthMismatch, _rewrite_metadata_fp,
-                     target_fp, test_metadata,
-                     codec=None, level=None, checksum='sha512')
+    with pytest.raises(ChecksumLengthMismatch):
+        _rewrite_metadata_fp(target_fp, test_metadata, codec=None, level=None,
+                             checksum='sha512')
 
     # make sure if level is not None, this works
     target_fp.seek(0, 0)
@@ -467,5 +459,5 @@ def test_rewrite_metadata():
     for i in range(100):
         test_metadata[str(i)] = str(i)
     target_fp.seek(0, 0)
-    nt.assert_raises(MetadataSectionTooSmall, _rewrite_metadata_fp,
-                     target_fp, test_metadata, codec=None, level=None)
+    with pytest.raises(MetadataSectionTooSmall):
+        _rewrite_metadata_fp(target_fp, test_metadata, codec=None, level=None)
--- a/test/test_args.py
+++ b/test/test_args.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
@@ -6,8 +5,7 @@
 from unittest import TestCase
 
 
-import nose.tools as nt
-
+import pytest
 
 from bloscpack.args import (DEFAULT_BLOSC_ARGS,
                             DEFAULT_BLOSCPACK_ARGS,
@@ -35,97 +33,96 @@ from bloscpack.pretty import reverse_pre
 def test_check_blosc_arguments():
     missing = DEFAULT_BLOSC_ARGS.copy()
     missing.pop('typesize')
-    nt.assert_raises(ValueError, _check_blosc_args, missing)
+    with pytest.raises(ValueError):
+        _check_blosc_args(missing)
     extra = DEFAULT_BLOSC_ARGS.copy()
     extra['wtf'] = 'wtf'
-    nt.assert_raises(ValueError, _check_blosc_args, extra)
+    with pytest.raises(ValueError):
+        _check_blosc_args(extra)
 
 
 def test_check_bloscpack_arguments():
     missing = DEFAULT_BLOSCPACK_ARGS.copy()
     missing.pop('offsets')
-    nt.assert_raises(ValueError, _check_bloscpack_args, missing)
+    with pytest.raises(ValueError):
+        _check_bloscpack_args(missing)
     extra = DEFAULT_BLOSCPACK_ARGS.copy()
     extra['wtf'] = 'wtf'
-    nt.assert_raises(ValueError, _check_bloscpack_args, extra)
+    with pytest.raises(ValueError):
+        _check_bloscpack_args(extra)
 
 
 def test_check_bloscpack_arguments_accpets_None_as_checksum():
     args = BloscpackArgs(checksum=None)
-    nt.assert_equal(args.checksum, 'None')
+    assert args.checksum == 'None'
 
 
 def test_check_metadata_arguments():
     missing = DEFAULT_METADATA_ARGS.copy()
     missing.pop('magic_format')
-    nt.assert_raises(ValueError, _check_metadata_arguments, missing)
+    with pytest.raises(ValueError):
+        _check_metadata_arguments(missing)
     extra = DEFAULT_METADATA_ARGS.copy()
     extra['wtf'] = 'wtf'
-    nt.assert_raises(ValueError, _check_metadata_arguments, extra)
+    with pytest.raises(ValueError):
+        _check_metadata_arguments(extra)
 
 
 def test_calculate_nchunks():
     # check for zero or negative chunk_size
-    nt.assert_raises(ValueError, calculate_nchunks,
-                     23, chunk_size=0)
-    nt.assert_raises(ValueError, calculate_nchunks,
-                     23, chunk_size=-1)
-
-    nt.assert_equal((9, 1, 1), calculate_nchunks(9, chunk_size=1))
-    nt.assert_equal((5, 2, 1), calculate_nchunks(9, chunk_size=2))
-    nt.assert_equal((3, 3, 3), calculate_nchunks(9, chunk_size=3))
-    nt.assert_equal((3, 4, 1), calculate_nchunks(9, chunk_size=4))
-    nt.assert_equal((2, 5, 4), calculate_nchunks(9, chunk_size=5))
-    nt.assert_equal((2, 6, 3), calculate_nchunks(9, chunk_size=6))
-    nt.assert_equal((2, 7, 2), calculate_nchunks(9, chunk_size=7))
-    nt.assert_equal((2, 8, 1), calculate_nchunks(9, chunk_size=8))
-    nt.assert_equal((1, 9, 9), calculate_nchunks(9, chunk_size=9))
+    with pytest.raises(ValueError):
+        calculate_nchunks(23, chunk_size=0)
+    with pytest.raises(ValueError):
+        calculate_nchunks(23, chunk_size=-1)
+
+    assert (9, 1, 1) == calculate_nchunks(9, chunk_size=1)
+    assert (5, 2, 1) == calculate_nchunks(9, chunk_size=2)
+    assert (3, 3, 3) == calculate_nchunks(9, chunk_size=3)
+    assert (3, 4, 1) == calculate_nchunks(9, chunk_size=4)
+    assert (2, 5, 4) == calculate_nchunks(9, chunk_size=5)
+    assert (2, 6, 3) == calculate_nchunks(9, chunk_size=6)
+    assert (2, 7, 2) == calculate_nchunks(9, chunk_size=7)
+    assert (2, 8, 1) == calculate_nchunks(9, chunk_size=8)
+    assert (1, 9, 9) == calculate_nchunks(9, chunk_size=9)
 
     # check downgrade
-    nt.assert_equal((1, 23, 23), calculate_nchunks(23, chunk_size=24))
+    assert (1, 23, 23) == calculate_nchunks(23, chunk_size=24)
 
     # single byte file
-    nt.assert_equal((1, 1,  1),
-                    calculate_nchunks(1, chunk_size=1))
+    assert (1, 1,  1) == calculate_nchunks(1, chunk_size=1)
 
     # check that a zero length input is handled correctly
-    nt.assert_equal((1, 0,  0),
-                    calculate_nchunks(0, chunk_size=1))
+    assert (1, 0,  0) == calculate_nchunks(0, chunk_size=1)
     # check that the chunk_size is ignored in this case
-    nt.assert_equal((1, 0,  0),
-                    calculate_nchunks(0, chunk_size=512))
+    assert (1, 0,  0) == calculate_nchunks(0, chunk_size=512)
     # in_file_size must be strictly positive
-    nt.assert_raises(ValueError, calculate_nchunks, -1)
+    with pytest.raises(ValueError):
+        calculate_nchunks(-1)
 
     # check overflow of nchunks due to chunk_size being too small
     # and thus stuff not fitting into the header
-    nt.assert_raises(ChunkingException, calculate_nchunks,
-                     MAX_CHUNKS+1, chunk_size=1)
+    with pytest.raises(ChunkingException):
+        calculate_nchunks(MAX_CHUNKS+1, chunk_size=1)
 
     # check that strings are converted correctly
-    nt.assert_equal((6, 1048576, 209715),
-                    calculate_nchunks(reverse_pretty('5.2M')))
-    nt.assert_equal((3, 2097152, 1258291),
-                    calculate_nchunks(reverse_pretty('5.2M'),
-                                      chunk_size='2M'))
+    assert (6, 1048576, 209715) == calculate_nchunks(reverse_pretty('5.2M'))
+    assert (3, 2097152, 1258291) == \
+        calculate_nchunks(reverse_pretty('5.2M'), chunk_size='2M')
 
 
 def test_handle_max_apps():
-    nt.assert_equals(_handle_max_apps(True, 10, 10), 10)
-    nt.assert_equals(_handle_max_apps(True, 10, lambda x: x*10), 100)
-    nt.assert_equals(_handle_max_apps(True, 1, lambda x: MAX_CHUNKS),
-                     MAX_CHUNKS-1)
-    nt.assert_equals(_handle_max_apps(True, 1, lambda x: MAX_CHUNKS+10),
-                     MAX_CHUNKS-1)
-    nt.assert_equals(_handle_max_apps(True, 1, MAX_CHUNKS),
-                     MAX_CHUNKS-1)
-    nt.assert_equals(_handle_max_apps(True, 10, MAX_CHUNKS),
-                     MAX_CHUNKS-10)
-    nt.assert_raises(TypeError, _handle_max_apps, True, 10, 10.0)
-    nt.assert_raises(ValueError, _handle_max_apps,
-                     True, 10, lambda x: -1)
-    nt.assert_raises(ValueError, _handle_max_apps,
-                     True, 10, lambda x: 1.0)
+    assert _handle_max_apps(True, 10, 10) == 10
+    assert _handle_max_apps(True, 10, lambda x: x*10) == 100
+    assert _handle_max_apps(True, 1, lambda x: MAX_CHUNKS) == MAX_CHUNKS-1
+    assert _handle_max_apps(True, 1, lambda x: MAX_CHUNKS+10) == MAX_CHUNKS-1
+    assert _handle_max_apps(True, 1, MAX_CHUNKS) == MAX_CHUNKS-1
+    assert _handle_max_apps(True, 10, MAX_CHUNKS) == MAX_CHUNKS-10
+    with pytest.raises(TypeError):
+        _handle_max_apps(True, 10, 10.0)
+    with pytest.raises(ValueError):
+        _handle_max_apps(True, 10, lambda x: -1)
+    with pytest.raises(ValueError):
+        _handle_max_apps(True, 10, lambda x: 1.0)
 
 
 class TestBloscArgs(TestCase):
--- a/test/test_checksums.py
+++ b/test/test_checksums.py
@@ -1,16 +1,11 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
-
-import nose.tools as nt
-
-
 from bloscpack import checksums
 
 
 def test_checksusm_exist():
-    nt.assert_equal(len(checksums.CHECKSUMS), 9)
+    assert len(checksums.CHECKSUMS) == 9
     checksums_avail = ['None',
                        'adler32',
                        'crc32',
@@ -20,7 +15,7 @@ def test_checksusm_exist():
                        'sha256',
                        'sha384',
                        'sha512']
-    nt.assert_equal(checksums.CHECKSUMS_AVAIL, checksums_avail)
+    assert checksums.CHECKSUMS_AVAIL == checksums_avail
 
 
 def test_checksusm_are_sane():
@@ -43,5 +38,5 @@ def test_checksusm_are_sane():
         ]
     for i, csum in enumerate(checksums.CHECKSUMS):
         digest = csum(b"\x23\x42\xbe\xef")
-        yield nt.assert_equal, len(digest), csum.size
-        yield nt.assert_equal, digest, csum_targets[i]
+        assert len(digest) == csum.size
+        assert digest == csum_targets[i]
--- a/test/test_cli.py
+++ b/test/test_cli.py
@@ -1,39 +1,33 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
 
 from mock import patch, Mock
-import nose.tools as nt
+import pytest
 
 from bloscpack import cli
 from bloscpack.exceptions import FileNotFound
 
+
 def test_parser():
     # hmmm I guess we could override the error
-    parser = cli.create_parser()
+    cli.create_parser()
 
 
 @patch('os.path.exists')
 def test_non_existing_input_file_raises_exception(mock_exists):
     args = Mock(force=False)
     mock_exists.return_value = False
-    nt.assert_raises(FileNotFound,
-                     cli.check_files,
-                     'nosuchfile',
-                     'nosuchfile',
-                     args)
+    with pytest.raises(FileNotFound):
+        cli.check_files('nosuchfile', 'nosuchfile', args)
 
 
 @patch('os.path.exists')
 def test_existing_output_file_raises_exception(mock_exists):
     args = Mock(force=False)
     mock_exists.side_effects = [True, True]
-    nt.assert_raises(FileNotFound,
-                     cli.check_files,
-                     'anyfile',
-                     'anyfile',
-                     args)
+    with pytest.raises(FileNotFound):
+        cli.check_files('anyfile', 'anyfile', args)
 
 
 @patch('os.path.exists')
--- a/test/test_file_io.py
+++ b/test/test_file_io.py
@@ -1,4 +1,3 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
@@ -7,7 +6,7 @@ from __future__ import print_function
 
 
 import blosc
-import nose.tools as nt
+import pytest
 from mock import patch
 import numpy as np
 
@@ -66,8 +65,8 @@ def test_offsets():
             # First chunks should start after header and offsets
             first = BLOSCPACK_HEADER_LENGTH + 8 * total_entries
             # We assume that the others are correct
-            nt.assert_equal(offsets[0], first)
-            nt.assert_equal(736, offsets[0])
+            assert offsets[0] == first
+            assert 736 == offsets[0]
             # try to read the second header
             input_fp.seek(offsets[1], 0)
             blosc_header_raw = input_fp.read(BLOSC_HEADER_LENGTH)
@@ -78,7 +77,7 @@ def test_offsets():
                         'typesize':  8}
             blosc_header = decode_blosc_header(blosc_header_raw)
             blosc_header_slice = dict((k, blosc_header[k]) for k in expected.keys())
-            nt.assert_equal(expected, blosc_header_slice)
+            assert expected == blosc_header_slice
 
     # now check the same thing again, but w/o any max_app_chunks
     input_fp, output_fp = StringIO(), StringIO()
@@ -95,9 +94,9 @@ def test_offsets():
          )
     output_fp.seek(0, 0)
     bloscpack_header = _read_bloscpack_header(output_fp)
-    nt.assert_equal(0, bloscpack_header.max_app_chunks)
+    assert 0 == bloscpack_header.max_app_chunks
     offsets = _read_offsets(output_fp, bloscpack_header)
-    nt.assert_equal(96, offsets[0])
+    assert 96 == offsets[0]
 
 
 def test_metadata():
@@ -106,7 +105,7 @@ def test_metadata():
                      'others': [],
                      }
     received_metadata = pack_unpack_fp(1, metadata=test_metadata)
-    nt.assert_equal(test_metadata, received_metadata)
+    assert test_metadata == received_metadata
 
 
 def test_metadata_opportunisitic_compression():
@@ -117,7 +116,7 @@ def test_metadata_opportunisitic_compres
     _write_metadata(target_fp, test_metadata, MetadataArgs())
     target_fp.seek(0, 0)
     metadata, header = _read_metadata(target_fp)
-    nt.assert_equal('zlib', header['meta_codec'])
+    assert 'zlib' == header['meta_codec']
 
     # now do the same thing, but use badly compressible metadata
     test_metadata = "abc"
@@ -127,7 +126,7 @@ def test_metadata_opportunisitic_compres
     target_fp.seek(0, 0)
     metadata, header = _read_metadata(target_fp)
     # but it wasn't of any use
-    nt.assert_equal('None', header['meta_codec'])
+    assert 'None' == header['meta_codec']
 
 
 def test_disable_offsets():
@@ -143,8 +142,8 @@ def test_disable_offsets():
          bloscpack_args=bloscpack_args)
     out_fp.seek(0)
     bloscpack_header, metadata, metadata_header, offsets = \
-            _read_beginning(out_fp)
-    nt.assert_true(len(offsets) == 0)
+        _read_beginning(out_fp)
+    assert len(offsets) == 0
 
 
 # this will cause a bug if we ever reach 255 format versions
@@ -154,8 +153,8 @@ def test_invalid_format():
     with create_tmp_files() as (tdir, in_file, out_file, dcmp_file):
         create_array(1, in_file)
         pack_file_to_file(in_file, out_file, blosc_args=blosc_args)
-        nt.assert_raises(FormatVersionMismatch,
-                         unpack_file_from_file, out_file, dcmp_file)
+        with pytest.raises(FormatVersionMismatch):
+            unpack_file_from_file(out_file, dcmp_file)
 
 
 def test_file_corruption():
@@ -180,7 +179,8 @@ def test_file_corruption():
             # write the flipped byte
             input_fp.write(replace)
         # now attempt to unpack it
-        nt.assert_raises(ChecksumMismatch, unpack_file_from_file, out_file, dcmp_file)
+        with pytest.raises(ChecksumMismatch):
+            unpack_file_from_file(out_file, dcmp_file)
 
 
 def pack_unpack(repeats, chunk_size=None, progress=False):
@@ -248,7 +248,7 @@ def test_pack_unpack_bytes_to_from_file(
     with create_tmp_files() as (tdir, in_file, out_file, dcmp_file):
         pack_bytes_to_file(input_bytes, out_file)
         output_bytes, _ = unpack_bytes_from_file(out_file)
-    nt.assert_equal(input_bytes, output_bytes)
+    assert input_bytes == output_bytes
 
 
 def test_pack_unpack_bytes_bytes():
@@ -256,7 +256,7 @@ def test_pack_unpack_bytes_bytes():
     b = a.tostring()
     c = pack_bytes_to_bytes(b)
     d, _ = unpack_bytes_from_bytes(c)
-    nt.assert_equal(b, d)
+    assert b == d
 
 
 def pack_unpack_hard():
--- a/test/test_log.py
+++ b/test/test_log.py
@@ -1,4 +1,4 @@
-import nose.tools as nt
+import pytest
 from mock import patch
 
 
@@ -6,7 +6,8 @@ from bloscpack import log
 
 
 def test_verbose():
-    nt.assert_raises(TypeError, log.verbose, 'message', 'MAXIMUM')
+    with pytest.raises(TypeError):
+        log.verbose('message', 'MAXIMUM')
     log.set_level(log.DEBUG)
     # should probably hijack the print statement
     log.verbose('notification')
@@ -20,4 +21,5 @@ def test_error(exit_mock):
 
 
 def test_set_level_exception():
-    nt.assert_raises(ValueError, log.set_level, 'NO_SUCH_LEVEL')
+    with pytest.raises(ValueError):
+        log.set_level('NO_SUCH_LEVEL')
--- a/test/test_memory_io.py
+++ b/test/test_memory_io.py
@@ -1,11 +1,6 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
-
-from nose import tools as nt
-
-
 from bloscpack.abstract_io import (pack,
                                    unpack,
                                    )
@@ -42,7 +37,7 @@ def pack_unpack_mem(repeats, chunk_size=
         print("Compressing")
     in_fp.seek(0)
     nchunks, chunk_size, last_chunk_size = \
-            calculate_nchunks(in_fp_size, chunk_size)
+        calculate_nchunks(in_fp_size, chunk_size)
     # let us play merry go round
     source = PlainFPSource(in_fp)
     sink = CompressedMemorySink()
@@ -50,7 +45,7 @@ def pack_unpack_mem(repeats, chunk_size=
     source = CompressedMemorySource(sink)
     sink = PlainMemorySink()
     unpack(source, sink)
-    nt.assert_equal(metadata, source.metadata)
+    assert metadata == source.metadata
     source = PlainMemorySource(sink.chunks)
     sink = CompressedFPSink(out_fp)
     pack(source, sink, nchunks, chunk_size, last_chunk_size, metadata=metadata)
@@ -58,7 +53,7 @@ def pack_unpack_mem(repeats, chunk_size=
     source = CompressedFPSource(out_fp)
     sink = PlainFPSink(dcmp_fp)
     unpack(source, sink)
-    nt.assert_equal(metadata, source.metadata)
+    assert metadata == source.metadata
     in_fp.seek(0)
     dcmp_fp.seek(0)
     cmp_fp(in_fp, dcmp_fp)
--- a/test/test_metacodecs.py
+++ b/test/test_metacodecs.py
@@ -1,11 +1,6 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
-
-import nose.tools as nt
-
-
 from bloscpack.args import (DEFAULT_META_LEVEL,
                             )
 from bloscpack.metacodecs import (CODECS,
@@ -14,8 +9,8 @@ from bloscpack.metacodecs import (CODECS
 
 
 def test_codecs():
-    nt.assert_equal(CODECS_AVAIL, ['None', 'zlib'])
+    assert CODECS_AVAIL == ['None', 'zlib']
     random_str = b"4KzGCl7SxTsYLaerommsMWyZg1TXbV6wsR9Xk"
     for i, c in enumerate(CODECS):
-        nt.assert_equal(random_str, c.decompress(
-            c.compress(random_str, DEFAULT_META_LEVEL)))
+        assert random_str == c.decompress(
+            c.compress(random_str, DEFAULT_META_LEVEL))
--- a/test/test_numpy_io.py
+++ b/test/test_numpy_io.py
@@ -1,12 +1,11 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
 
 import numpy as np
 import numpy.testing as npt
-import nose.tools as nt
 import mock
+import pytest
 
 
 from bloscpack.abstract_io import (pack,
@@ -77,7 +76,7 @@ def test_conv():
     )
     for input_, expected in test_data:
         received = _conv(input_)
-        yield nt.assert_equal, expected, received
+        assert expected == received
 
 
 def test_unpack_exception():
@@ -87,14 +86,15 @@ def test_unpack_exception():
     source = PlainFPSource(StringIO(a_str))
     sink = CompressedFPSink(sio)
     pack(source, sink, *calculate_nchunks(len(a_str)))
-    nt.assert_raises(NotANumpyArray, unpack_ndarray_from_bytes, sio.getvalue())
+    with pytest.raises(NotANumpyArray):
+        unpack_ndarray_from_bytes, sio.getvalue()
 
 
 def roundtrip_ndarray(ndarray):
-    yield roundtrip_numpy_memory(ndarray)
-    yield roundtrip_numpy_str(ndarray)
-    yield roundtrip_numpy_file_pointers(ndarray)
-    yield roundtrip_numpy_file(ndarray)
+    roundtrip_numpy_memory(ndarray)
+    roundtrip_numpy_str(ndarray)
+    roundtrip_numpy_file_pointers(ndarray)
+    roundtrip_numpy_file(ndarray)
 
 
 def test_numpy_dtypes_shapes_order():
@@ -102,45 +102,45 @@ def test_numpy_dtypes_shapes_order():
     # happy trail
     a = np.arange(50)
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     for dt in np.sctypes['int'] + np.sctypes['uint'] + np.sctypes['float']:
         a = np.arange(64, dtype=dt)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
         a = a.copy().reshape(8, 8)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
         a = a.copy().reshape(4, 16)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
         a = a.copy().reshape(4, 4, 4)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
         a = np.asfortranarray(a)
-        nt.assert_true(np.isfortran(a))
+        assert np.isfortran(a)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
 
     # Fixed width string arrays
     a = np.array(['abc', 'def', 'ghi'])
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     # This actually get's cast to a fixed width string array
     a = np.array([(1, 'abc'), (2, 'def'), (3, 'ghi')])
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     ## object arrays
     #a = np.array([(1, 'abc'), (2, 'def'), (3, 'ghi')], dtype='object')
     #for case in roundtrip_ndarray(a):
-    #    yield case
+    #    case()
 
     # structured array
     a = np.array([('a', 1), ('b', 2)], dtype=[('a', 'S1'), ('b', 'f8')])
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     # record array
     a = np.array([(1, 'O', 1)],
@@ -148,7 +148,7 @@ def test_numpy_dtypes_shapes_order():
                                 ('symbol', '|S1'),
                                 ('index', 'int32')]))
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     # and a nested record array
     dt = [('year', '<i4'),
@@ -162,28 +162,30 @@ def test_numpy_dtypes_shapes_order():
                           ('ARG', 12.)))],
                  dt)
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     # what about endianess
     a = np.arange(10, dtype='>i8')
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
     # empty array
     a = np.array([], dtype='f8')
     for case in roundtrip_ndarray(a):
-        yield case
+        case()
 
 
 def test_reject_object_array():
     a = np.array([(1, 'abc'), (2, 'def'), (3, 'ghi')], dtype='object')
-    nt.assert_raises(ObjectNumpyArrayRejection, roundtrip_numpy_memory, a)
+    with pytest.raises(ObjectNumpyArrayRejection):
+        roundtrip_numpy_memory(a)
 
 
 def test_reject_nested_object_array():
     a = np.array([(1, 'abc'), (2, 'def'), (3, 'ghi')],
-                  dtype=[('a', int), ('b', 'object')])
-    nt.assert_raises(ObjectNumpyArrayRejection, roundtrip_numpy_memory, a)
+                 dtype=[('a', int), ('b', 'object')])
+    with pytest.raises(ObjectNumpyArrayRejection):
+        roundtrip_numpy_memory(a)
 
 
 def test_backwards_compat():
@@ -209,23 +211,22 @@ def test_backwards_compat():
             c = pack_ndarray_to_bytes(a)
             # should not raise a SyntaxError
             d = unpack_ndarray_from_bytes(c)
-            yield npt.assert_array_equal, a, d
+            npt.assert_array_equali(a, d)
 
 
 def test_itemsize_chunk_size_mismatch():
     a = np.arange(1000)
     # typesize of the array is 8, let's glitch the typesize
     for i in [1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 15]:
-            yield nt.assert_raises, \
-                ChunkSizeTypeSizeMismatch, \
-                pack_ndarray_to_bytes, a, i
+        with pytest.raises(ChunkSizeTypeSizeMismatch):
+            pack_ndarray_to_bytes(a, i)
 
 
 def test_larger_arrays():
     for dt in ('uint64', 'int64', 'float64'):
         a = np.arange(2e4, dtype=dt)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
 
 
 def huge_arrays():
@@ -233,7 +234,7 @@ def huge_arrays():
         # needs plenty of memory
         a = np.arange(1e8, dtype=dt)
         for case in roundtrip_ndarray(a):
-            yield case
+            case()
 
 
 def test_alternate_cname():
@@ -249,7 +250,7 @@ def test_alternate_cname():
         sink = CompressedMemorySink()
         pack_ndarray(array_, sink, blosc_args=blosc_args)
         blosc_header = decode_blosc_header(sink.chunks[0])
-        yield nt.assert_equal, blosc_header['flags'] >> 5, int_id
+        assert blosc_header['flags'] >> 5 == int_id
 
 
 def test_typesize_is_set_correctly_with_default_blosc_args():
@@ -257,7 +258,7 @@ def test_typesize_is_set_correctly_with_
     sink = CompressedMemorySink()
     pack_ndarray(a, sink)
     expected_args = BloscArgs(typesize=1)
-    nt.assert_equal(expected_args, sink.blosc_args)
+    assert expected_args == sink.blosc_args
 
 
 def test_typesize_is_set_correctly_with_custom_blosc_args():
@@ -266,11 +267,11 @@ def test_typesize_is_set_correctly_with_
     input_args = BloscArgs(clevel=9)
     pack_ndarray(a, sink, blosc_args=input_args)
     expected_args = BloscArgs(clevel=9, typesize=1)
-    nt.assert_equal(expected_args, sink.blosc_args)
+    assert expected_args == sink.blosc_args
 
 
 def test_roundtrip_slice():
     a = np.arange(100).reshape((10, 10))
     s = a[3:5, 3:5]
     for case in roundtrip_ndarray(s):
-        yield case
+        case()
--- a/test/test_pretty.py
+++ b/test/test_pretty.py
@@ -1,9 +1,8 @@
-#!/usr/bin/env nosetests
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
 
-import nose.tools as nt
+import pytest
 
 
 from bloscpack.pretty import (pretty_size,
@@ -13,17 +12,18 @@ from bloscpack.pretty import (pretty_siz
 
 def test_pretty_filesieze():
 
-    nt.assert_equal('0B', pretty_size(0))
-    nt.assert_equal('9.0T', pretty_size(9898989898879))
-    nt.assert_equal('4.78G', pretty_size(5129898234))
-    nt.assert_equal('12.3M', pretty_size(12898234))
-    nt.assert_equal('966.7K', pretty_size(989898))
-    nt.assert_equal('128.0B', pretty_size(128))
-    nt.assert_equal(0, reverse_pretty('0B'))
-    nt.assert_equal(8, reverse_pretty('8B'))
-    nt.assert_equal(8192, reverse_pretty('8K'))
-    nt.assert_equal(134217728, reverse_pretty('128M'))
-    nt.assert_equal(2147483648, reverse_pretty('2G'))
-    nt.assert_equal(2199023255552, reverse_pretty('2T'))
+    assert '0B' == pretty_size(0)
+    assert '9.0T' == pretty_size(9898989898879)
+    assert '4.78G' == pretty_size(5129898234)
+    assert '12.3M' == pretty_size(12898234)
+    assert '966.7K' == pretty_size(989898)
+    assert '128.0B' == pretty_size(128)
+    assert 0 == reverse_pretty('0B')
+    assert 8 == reverse_pretty('8B')
+    assert 8192 == reverse_pretty('8K')
+    assert 134217728 == reverse_pretty('128M')
+    assert 2147483648 == reverse_pretty('2G')
+    assert 2199023255552 == reverse_pretty('2T')
     # can't handle Petabytes, yet
-    nt.assert_raises(ValueError, reverse_pretty, '2P')
+    with pytest.raises(ValueError):
+        reverse_pretty('2P')
--- a/test/test_serializers.py
+++ b/test/test_serializers.py
@@ -2,9 +2,6 @@
 # -*- coding: utf-8 -*-
 # vim :set ft=py:
 
-import nose.tools as nt
-
-
 try:
     from collections import OrderedDict
 except ImportError:  # pragma: no cover
@@ -17,11 +14,11 @@ from bloscpack.serializers import (SERIA
 
 
 def test_serializers():
-    nt.assert_equal(SERIALIZERS_AVAIL, [b'JSON'])
+    assert SERIALIZERS_AVAIL == [b'JSON']
     output = '{"dtype":"float64","shape":[1024],"others":[]}'
     input_ = OrderedDict([('dtype', "float64"),
                          ('shape', [1024]),
                          ('others', [])])
     for s in SERIALIZERS:
-        yield nt.assert_equal, output, s.dumps(input_)
-        yield nt.assert_equal, input_, s.loads(output)
+        assert output == s.dumps(input_)
+        assert input_ == s.loads(output)
--- a/bloscpack/file_io.py
+++ b/bloscpack/file_io.py
@@ -350,7 +350,7 @@ class PlainFPSource(PlainSource):
         for num_bytes in ([self.chunk_size] *
                           (self.nchunks - 1) +
                           [self.last_chunk]):
-            yield self.input_fp.read(num_bytes)
+            self.input_fp.read(num_bytes)
 
 
 class CompressedFPSource(CompressedSource):
@@ -366,7 +366,7 @@ class CompressedFPSource(CompressedSourc
     def __iter__(self):
         for i in xrange(self.nchunks):
             compressed, header, digest = _read_compressed_chunk_fp(self.input_fp, self.checksum_impl)
-            yield compressed, digest
+            compressed(digest)
 
 
 class PlainFPSink(PlainSink):
--- a/bloscpack/memory_io.py
+++ b/bloscpack/memory_io.py
@@ -19,7 +19,7 @@ class PlainMemorySource(PlainSource):
 
     def __iter__(self):
         for c in self.chunks:
-            yield c
+            c()
 
 
 class CompressedMemorySource(CompressedSource):
@@ -42,7 +42,7 @@ class CompressedMemorySource(CompressedS
         for i in xrange(self.nchunks):
             compressed = self.chunks[i]
             digest = self.checksums[i] if self.checksum else None
-            yield compressed, digest
+            compressed(digest)
 
 
 class PlainMemorySink(PlainSink):
--- a/bloscpack/numpy_io.py
+++ b/bloscpack/numpy_io.py
@@ -90,9 +90,9 @@ class PlainNumpySource(PlainSource):
         self.nitems = int(self.chunk_size / self.ndarray.itemsize)
         offset = self.ptr
         for i in xrange(self.nchunks - 1):
-            yield offset, self.nitems
+            offset(self.nitems)
             offset += self.chunk_size
-        yield offset, int(self.last_chunk / self.ndarray.itemsize)
+        offset(int(self.last_chunk / self.ndarray.itemsize))
 
 
 def _conv(descr):

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File remove_nose.patch of Package python-bloscpack (Revision 69295f6ebd83069ac5d127057b0280c9)

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