tool functions and pytest

tests/test_tool_function_decorator.py

@@ -0,0 +1,30 @@
+import pytest
+import tool_helper
+import tests.helper as helper
+
+
+def test_tool_function_decorator_if_clean_tool_list():
+    """ tests for the tool list to be empty. NOT strictly nessesary,
+    but I want to be warned if this is not the case anymore. Could be not the intention """
+    start_len = len(tool_helper.tool_list)
+    assert start_len == 0
+
+def test_tool_function_decorator():
+    # get length before adding tools
+    start_len = len(tool_helper.tool_list)
+
+    # add tools like it would be a decorator
+    tool_helper.tool(helper.tool_dummy)
+    tool_helper.tool(helper.tool_dummy2)
+
+    # get length after adding tools
+    end_len = len(tool_helper.tool_list)
+
+    # remove the added ones again
+    tool_helper.tool_list = tool_helper.tool_list[:-2]
+
+    assert end_len == start_len + 2
+    assert len(tool_helper.tool_list) == start_len
+
+
+