added docstring tests (forgot to add them a while ago), important for #87

test/completion/docstring.py

@@ -0,0 +1,21 @@
+""" Test docstrings in functions and classes, which are used to infer types """
+
+def f(a, b):
+    """ asdfasdf
+    :param a: blablabla
+    :type a: str
+    """
+    #? str()
+    a
+    #? 
+    b
+
+def g(a, b):
+    """ asdfasdf
+    Arguments:
+        a (str): blablabla
+    """
+    #? str()
+    a
+    #? 
+    b