Python: Add import * tests

Moves the current test out of `test.py`, as otherwise any unknown global
(like, say, `sink`) would _also_ be considered to be something
potentially defined in `unknown`.

python/ql/test/experimental/dataflow/ApiGraphs/test.py

@@ -74,12 +74,6 @@ def f():
     change_foo()
     sink(foo) #$ use=moduleImport("danger").getMember("SOURCE")
 
-# Star imports
-
-from unknown import * #$ use=moduleImport("unknown")
-
-hello() #$ MISSING: use=moduleImport("unknown").getMember("hello").getReturn()
-
 
 # Subclasses
 

python/ql/test/experimental/dataflow/ApiGraphs/test_import_star.py

@@ -0,0 +1,23 @@
+# Star imports
+
+from unknown import * #$ use=moduleImport("unknown")
+
+# Currently missing, as we do not consider `hello` to be a `LocalSourceNode`, since it has flow
+# going into it from its corresponding `GlobalSsaVariable`.
+hello() #$ MISSING: use=moduleImport("unknown").getMember("hello").getReturn()
+
+non_module_member
+
+outer_bar = 5
+outer_bar
+
+def foo():
+    world() #$ use=moduleImport("unknown").getMember("world").getReturn()
+    bar = 5
+    bar
+    non_module_member
+    print(bar) #$ use=moduleImport("builtins").getMember("print").getReturn()
+
+def quux():
+    global non_module_member
+    non_module_member = 5

python/ql/test/experimental/dataflow/ApiGraphs/test_import_star2.py

@@ -0,0 +1,15 @@
+# Star imports in local scope
+
+hello2() 
+
+def foo():
+    from unknown2 import * #$ use=moduleImport("unknown2")
+    world2() #$ use=moduleImport("unknown2").getMember("world2").getReturn()
+    bar2 = 5
+    bar2
+    non_module_member2
+    print(bar2) #$ use=moduleImport("builtins").getMember("print").getReturn()
+
+def quux2():
+    global non_module_member2
+    non_module_member2 = 5