Merge pull request #2850 from yarikoptic/bf-nopytest

RF: Move pytest and pytest-xdist from general requirement into tests_required

Author: effigies

nipype/info.py

@@ -147,8 +147,6 @@ def get_nipype_gitversion():
     'neurdflib',
     'click>=%s' % CLICK_MIN_VERSION,
     'funcsigs',
-    'pytest>=%s' % PYTEST_MIN_VERSION,
-    'pytest-xdist',
     'mock',
     'pydotplus',
     'pydot>=%s' % PYDOT_MIN_VERSION,
@@ -159,7 +157,14 @@ def get_nipype_gitversion():
 if sys.version_info <= (3, 4):
     REQUIRES.append('configparser')
 
-TESTS_REQUIRES = ['pytest-cov', 'codecov', 'pytest-env', 'coverage<5']
+TESTS_REQUIRES = [
+    'pytest>=%s' % PYTEST_MIN_VERSION,
+    'pytest-xdist',
+    'pytest-cov',
+    'codecov',
+    'pytest-env',
+    'coverage<5'
+]
 
 EXTRA_REQUIRES = {
     'doc': ['Sphinx>=1.4', 'numpydoc', 'matplotlib', 'pydotplus', 'pydot>=1.2.3'],