merged refactor

conftest.py

@@ -0,0 +1,19 @@
+import pytest
+
+
+def pytest_addoption(parser):
+    parser.addoption('--runslow', action='store_true', default=False, help='run slow tests')
+
+
+def pytest_collection_modifyitems(config, items):
+    if config.getoption('--runslow'):
+        # --runslow given in cli: do not skip slow tests
+        return
+    skip_slow = pytest.mark.skip(reason='need --runslow option to run')
+    slow_tests = []
+    for item in items:
+        if 'slow' in item.keywords:
+            slow_tests.append(item.name)
+            item.add_marker(skip_slow)
+
+    print('skipping slow tests', ' '.join(slow_tests), 'use --runslow to run this')