Add type hints to magicbot injection tests

Ensure that magicbot doesn't simply break in the presence of type-hinted
initialised variables.

Author: auscompgeek

tests/magicbot_annotation_tester.py

@@ -1,3 +1,5 @@
+from typing import List
+
 import magicbot
 
 
@@ -108,22 +110,26 @@ def createObjects(self):
 
 class TypeHintedComponent:
     injectable: Injectable
+    numbers: List[float]
 
     some_int: int = 1
     maybe_float: float = None
     calculated_num: float
 
     def __init__(self):
         self.calculated_num = 1 - self.some_int
+        self.numbers = [1, 2.0, 3, 5.0]
 
     def execute(self):
         pass
 
 
 class TypeHintsBot(magicbot.MagicRobot):
     injectable: Injectable
+    injectables: List[Injectable]
 
     component: TypeHintedComponent
 
     def createObjects(self):
         self.injectable = Injectable(42)
+        self.injectables = [self.injectable]