[wip] converting tests from nibabel/tests/

.travis.yml

@@ -130,7 +130,7 @@ script:
           cd for_testing
           cp ../.coveragerc .
           nosetests --with-doctest --with-coverage --cover-package nibabel nibabel
-          pytest -v ../nibabel/tests/test_affines.py ../nibabel/tests/test_volumeutils.py
+          pytest -v ../nibabel/tests
       else
           false
       fi

nibabel/optpkg.py

@@ -115,6 +115,7 @@ def optional_package(name, trip_msg=None, min_version=None):
                     % (name, name, exc))
     pkg = TripWire(trip_msg)
 
+    # TODO dj: no clue why is it needed...
     def setup_module():
         if have_nose:
             import nose

nibabel/testing_pytest/__init__.py

@@ -22,7 +22,8 @@
 slow = dec.slow
 
 from ..deprecated import deprecate_with_version as _deprecate_with_version
-
+from .np_features import memmap_after_ufunc
+from .helpers import bytesio_filemap, bytesio_round_trip, assert_data_similar
 
 from itertools import zip_longest
 
@@ -45,8 +46,6 @@ def test_data(subdir=None, fname=None):
 data_path = test_data()
 
 
-from .np_features import memmap_after_ufunc
-
 def assert_dt_equal(a, b):
     """ Assert two numpy dtype specifiers are equal
 

nibabel/tests/test_helpers.py → nibabel/testing_pytest/helpers.py

@@ -4,12 +4,9 @@
 
 import numpy as np
 
-from ..openers import ImageOpener
-from ..tmpdirs import InTemporaryDirectory
 from ..optpkg import optional_package
 _, have_scipy, _ = optional_package('scipy.io')
 
-from nose.tools import assert_true
 from numpy.testing import assert_array_equal
 
 
@@ -51,6 +48,6 @@ def assert_data_similar(arr, params):
         return
     summary = params['data_summary']
     real_arr = np.asarray(arr)
-    assert_true(np.allclose(
+    assert np.allclose(
         (real_arr.min(), real_arr.max(), real_arr.mean()),
-        (summary['min'], summary['max'], summary['mean'])))
+        (summary['min'], summary['max'], summary['mean']))