Add many test cases

While these definitely _ought_ to work on Python 2.7, the annotation
support there is very limited and as Python 2 is deprecated it
doesn't seem worth it.

test/test_api/test_api.py

@@ -340,8 +340,13 @@ def test_math_fuzzy_completion(Script, environment):
 def test_file_fuzzy_completion(Script):
     path = os.path.join(test_dir, 'completion')
     script = Script('"{}/ep08_i'.format(path))
-    assert ['pep0484_basic.py"', 'pep0484_typing.py"'] \
-        == [comp.name for comp in script.complete(fuzzy=True)]
+    expected = [
+        'pep0484_basic.py"',
+        'pep0484_generic_parameters.py"',
+        'pep0484_generic_passthroughs.py"',
+        'pep0484_typing.py"',
+    ]
+    assert expected == [comp.name for comp in script.complete(fuzzy=True)]
 
 
 @pytest.mark.parametrize(