Add tests

pytest.ini

@@ -0,0 +1,14 @@
+[tool:pytest]
+testpaths = tests
+python_files = test_*.py
+python_classes = Test*
+python_functions = test_*
+pythonpath = src
+addopts = 
+    -v
+    --tb=short
+    --strict-markers
+    --disable-warnings
+filterwarnings =
+    ignore::DeprecationWarning
+    ignore::PendingDeprecationWarning