diff --git a/IPython/terminal/tests/test_interactivshell.py b/IPython/terminal/tests/test_interactivshell.py
index 640e5d4..763ccc9 100644
--- a/IPython/terminal/tests/test_interactivshell.py
+++ b/IPython/terminal/tests/test_interactivshell.py
@@ -12,29 +12,42 @@ from IPython.testing import tools as tt
 from IPython.utils.capture import capture_output
 
 from IPython.terminal.ptutils import _elide, _adjust_completion_text_based_on_context
-import nose.tools as nt
 
-class TestElide(unittest.TestCase):
 
+class TestElide(unittest.TestCase):
     def test_elide(self):
-        _elide('concatenate((a1, a2, ...), axis', '') # do not raise
-        _elide('concatenate((a1, a2, ..), . axis', '') # do not raise
-        nt.assert_equal(_elide('aaaa.bbbb.ccccc.dddddd.eeeee.fffff.gggggg.hhhhhh',''), 'aaaa.b…g.hhhhhh')
-
-        test_string = os.sep.join(['', 10*'a', 10*'b', 10*'c', ''])
-        expect_stirng = os.sep + 'a' + '\N{HORIZONTAL ELLIPSIS}' + 'b' + os.sep + 10*'c'
-        nt.assert_equal(_elide(test_string, ''), expect_stirng)
+        _elide("concatenate((a1, a2, ...), axis", "")  # do not raise
+        _elide("concatenate((a1, a2, ..), . axis", "")  # do not raise
+        self.assertEqual(
+            _elide("aaaa.bbbb.ccccc.dddddd.eeeee.fffff.gggggg.hhhhhh", ""),
+            "aaaa.b…g.hhhhhh",
+        )
+
+        test_string = os.sep.join(["", 10 * "a", 10 * "b", 10 * "c", ""])
+        expect_stirng = (
+            os.sep + "a" + "\N{HORIZONTAL ELLIPSIS}" + "b" + os.sep + 10 * "c"
+        )
+        self.assertEqual(_elide(test_string, ""), expect_stirng)
 
     def test_elide_typed_normal(self):
-        nt.assert_equal(_elide('the quick brown fox jumped over the lazy dog', 'the quick brown fox', min_elide=10), 'the…fox jumped over the lazy dog')
-
+        self.assertEqual(
+            _elide(
+                "the quick brown fox jumped over the lazy dog",
+                "the quick brown fox",
+                min_elide=10,
+            ),
+            "the…fox jumped over the lazy dog",
+        )
 
     def test_elide_typed_short_match(self):
         """
         if the match is too short we don't elide.
         avoid the "the...the"
         """
-        nt.assert_equal(_elide('the quick brown fox jumped over the lazy dog', 'the', min_elide=10), 'the quick brown fox jumped over the lazy dog')
+        self.assertEqual(
+            _elide("the quick brown fox jumped over the lazy dog", "the", min_elide=10),
+            "the quick brown fox jumped over the lazy dog",
+        )
 
     def test_elide_typed_no_match(self):
         """
@@ -42,22 +55,41 @@ class TestElide(unittest.TestCase):
         avoid the "the...the"
         """
         # here we typed red instead of brown
-        nt.assert_equal(_elide('the quick brown fox jumped over the lazy dog', 'the quick red fox', min_elide=10), 'the quick brown fox jumped over the lazy dog')
+        self.assertEqual(
+            _elide(
+                "the quick brown fox jumped over the lazy dog",
+                "the quick red fox",
+                min_elide=10,
+            ),
+            "the quick brown fox jumped over the lazy dog",
+        )
 
-class TestContextAwareCompletion(unittest.TestCase):
 
+class TestContextAwareCompletion(unittest.TestCase):
     def test_adjust_completion_text_based_on_context(self):
         # Adjusted case
-        nt.assert_equal(_adjust_completion_text_based_on_context('arg1=', 'func1(a=)', 7), 'arg1')
+        self.assertEqual(
+            _adjust_completion_text_based_on_context("arg1=", "func1(a=)", 7), "arg1"
+        )
 
         # Untouched cases
-        nt.assert_equal(_adjust_completion_text_based_on_context('arg1=', 'func1(a)', 7), 'arg1=')
-        nt.assert_equal(_adjust_completion_text_based_on_context('arg1=', 'func1(a', 7), 'arg1=')
-        nt.assert_equal(_adjust_completion_text_based_on_context('%magic', 'func1(a=)', 7), '%magic')
-        nt.assert_equal(_adjust_completion_text_based_on_context('func2', 'func1(a=)', 7), 'func2')
+        self.assertEqual(
+            _adjust_completion_text_based_on_context("arg1=", "func1(a)", 7), "arg1="
+        )
+        self.assertEqual(
+            _adjust_completion_text_based_on_context("arg1=", "func1(a", 7), "arg1="
+        )
+        self.assertEqual(
+            _adjust_completion_text_based_on_context("%magic", "func1(a=)", 7), "%magic"
+        )
+        self.assertEqual(
+            _adjust_completion_text_based_on_context("func2", "func1(a=)", 7), "func2"
+        )
+
 
 # Decorator for interaction loop tests -----------------------------------------
 
+
 class mock_input_helper(object):
     """Machinery for tests of the main interact loop.