IPython.testing.tools without Nose

IPython/testing/tools.py

@@ -21,15 +21,6 b' from io import StringIO'
 from subprocess import Popen, PIPE
 from unittest.mock import patch
 
-try:
-    # These tools are used by parts of the runtime, so we make the nose
-    # dependency optional at this point.  Nose is a hard dependency to run the
-    # test suite, but NOT to use ipython itself.
-    import nose.tools as nt
-    has_nose = True
-except ImportError:
-    has_nose = False
-
 from traitlets.config.loader import Config
 from IPython.utils.process import get_output_error_code
 from IPython.utils.text import list_strings
@@ -252,8 +243,6 b" def ipexec_validate(fname, expected_out, expected_err='',"
     None
     """
 
-    import nose.tools as nt
-
     out, err = ipexec(fname, options, commands)
     #print 'OUT', out  # dbg
     #print 'ERR', err  # dbg
@@ -261,12 +250,12 b" def ipexec_validate(fname, expected_out, expected_err='',"
     # more informative than simply having an empty stdout.
     if err:
         if expected_err:
-            nt.assert_equal("\n".join(err.strip().splitlines()), "\n".join(expected_err.strip().splitlines()))
+            assert err.strip().splitlines() == expected_err.strip().splitlines()
         else:
             raise ValueError('Running file %r produced error: %r' %
                              (fname, err))
     # If no errors or output on stderr was expected, match stdout
-    nt.assert_equal("\n".join(out.strip().splitlines()), "\n".join(expected_out.strip().splitlines()))
+    assert out.strip().splitlines() == expected_out.strip().splitlines()
 
 
 class TempFileMixin(unittest.TestCase):
@@ -458,10 +447,10 b" def help_output_test(subcommand=''):"
     """test that `ipython [subcommand] -h` works"""
     cmd = get_ipython_cmd() + [subcommand, '-h']
     out, err, rc = get_output_error_code(cmd)
-    nt.assert_equal(rc, 0, err)
-    nt.assert_not_in("Traceback", err)
-    nt.assert_in("Options", out)
-    nt.assert_in("--help-all", out)
+    assert rc == 0, err
+    assert "Traceback" not in err
+    assert "Options" in out
+    assert "--help-all" in out
     return out, err
 
 
@@ -469,9 +458,9 b" def help_all_output_test(subcommand=''):"
     """test that `ipython [subcommand] --help-all` works"""
     cmd = get_ipython_cmd() + [subcommand, '--help-all']
     out, err, rc = get_output_error_code(cmd)
-    nt.assert_equal(rc, 0, err)
-    nt.assert_not_in("Traceback", err)
-    nt.assert_in("Options", out)
-    nt.assert_in("Class", out)
+    assert rc == 0, err
+    assert "Traceback" not in err
+    assert "Options" in out
+    assert "Class" in out
     return out, err