1diff --git a/slugify/tests.py b/slugify/tests.py
2index 9f636c4..5562e87 100644
3--- a/slugify/tests.py
4+++ b/slugify/tests.py
5@@ -3,7 +3,7 @@ from __future__ import unicode_literals
6
7 import six
8 import unittest
9-from nose.tools import eq_, raises
10+import pytest
11
12 from slugify import slugify, smart_text, SLUG_OK
13
14@@ -13,31 +13,31 @@ def test_slugify():
15 x = '-'.join([u, u])
16 y = ' - '.join([u, u])
17
18- @raises(ValueError)
19 def test_incoherent_ok_and_only_ascii_raises_an_error():
20 """Checks that only_ascii=True with non ascii "ok" chars actually raises an error."""
21- slugify('angry smiley !', ok='è_é', only_ascii=True)
22+ with pytest.raises(ValueError):
23+ slugify('angry smiley !', ok='è_é', only_ascii=True)
24
25 def check(x, y):
26- eq_(slugify(x), y)
27+ assert slugify(x) == y
28
29 def check_only_ascii(x, y):
30- eq_(slugify(x, only_ascii=True), y)
31+ assert slugify(x, only_ascii=True) == y
32
33 def check_only_ascii_capital(x, y):
34- eq_(slugify(x, lower=False, only_ascii=True), y)
35+ assert slugify(x, lower=False, only_ascii=True) == y
36
37 def check_only_ascii_lower_nospaces(x, y):
38- eq_(slugify(x, lower=True, spaces=False, only_ascii=True), y)
39+ assert slugify(x, lower=True, spaces=False, only_ascii=True) == y
40
41 def check_ok_chars(x, y):
42- eq_(slugify(x, ok='-♰é_è'), y)
43+ assert slugify(x, ok='-♰é_è') == y
44
45 def check_empty_ok_chars(x, y):
46- eq_(slugify(x, ok=''), y)
47+ assert slugify(x, ok='') == y
48
49 def check_limited_ok_chars_only_ascii(x, y):
50- eq_(slugify(x, ok='-', only_ascii=True), y)
51+ assert slugify(x, ok='-', only_ascii=True) == y
52
53 s = [('xx x - "#$@ x', 'xx-x-x'),
54 ('Bän...g (bang)', 'bäng-bang'),
55@@ -112,11 +112,11 @@ def test_slugify():
56
57 #Test custom space replacement
58 x, y = ('-☀- pretty waves under the sunset 😎', '--~pretty~waves~under~the~sunset')
59- eq_(slugify(x, space_replacement='~'), y)
60+ assert slugify(x, space_replacement='~') == y
61
62 #Test default auto space replacement
63 x, y = ('-☀- pretty waves under the sunset 😎', 'pretty~waves~under~the~sunset')
64- eq_(slugify(x, ok='~'), y)
65+ assert slugify(x, ok='~') == y
66
67
68 class SmartTextTestCase(unittest.TestCase):
69