Python: Add test of multi func def based on runtime decision

Author: RasmusWL

python/ql/test/experimental/library-tests/CallGraph/InlineCallGraphTest.expected

@@ -15,6 +15,8 @@ pointsTo_found_typeTracker_notFound
 | code/func_defined_outside_class.py:42:1:42:7 | ControlFlowNode for Attribute() | B._gen.func |
 | code/func_defined_outside_class.py:43:1:43:7 | ControlFlowNode for Attribute() | B._gen.func |
 | code/funky_regression.py:15:9:15:17 | ControlFlowNode for Attribute() | Wat.f2 |
+| code/runtime_decision.py:44:1:44:7 | ControlFlowNode for func4() | "code/runtime_decision_defns.py:4:func4" |
+| code/runtime_decision.py:44:1:44:7 | ControlFlowNode for func4() | "code/runtime_decision_defns.py:7:func4" |
 | code/type_tracking_limitation.py:8:1:8:3 | ControlFlowNode for x() | my_func |
 typeTracker_found_pointsTo_notFound
 | code/callable_as_argument.py:29:5:29:12 | ControlFlowNode for Attribute() | test_class.InsideTestFunc.sm |

python/ql/test/experimental/library-tests/CallGraph/code/runtime_decision.py

@@ -24,3 +24,21 @@ def rd_bar():
     func2 = rd_bar
 
 func2() # $ pt,tt=rd_foo pt,tt=rd_bar
+
+
+# ==============================================================================
+# definition is random
+
+if random.random() < 0.5:
+    def func3():
+        print("func3 A")
+else:
+    def func3():
+        print("func3 B")
+
+func3() # $ pt,tt=33:func3 pt,tt=36:func3
+
+
+# func4 uses same setup as func3, it's just defined in an other file
+from code.runtime_decision_defns import func4
+func4() # $ pt="code/runtime_decision_defns.py:4:func4" pt="code/runtime_decision_defns.py:7:func4" MISSING: tt

python/ql/test/experimental/library-tests/CallGraph/code/runtime_decision_defns.py

@@ -0,0 +1,8 @@
+import random
+
+if random.random() < 0.5:
+    def func4():
+        print("func4 A")
+else:
+    def func4():
+        print("func4 B")