Add Function App directory as a top-level module (#325)

* Add Function App directory as a top-level module

* Revert "Add Function App directory as a top-level module"

This reverts commit b2d7462.

* Rename top-level module from __azure__ to __app__

Author: maiqbal11

azure/functions_worker/loader.py

@@ -11,7 +11,7 @@
 import typing
 
 
-_AZURE_NAMESPACE = '__azure__'
+_AZURE_NAMESPACE = '__app__'
 
 _submodule_dirs = []
 
@@ -22,7 +22,7 @@ def register_function_dir(path: os.PathLike):
 
 def install():
     if _AZURE_NAMESPACE not in sys.modules:
-        # Create and register the __azure__ namespace package.
+        # Create and register the __app__ namespace package.
         ns_spec = importlib.machinery.ModuleSpec(_AZURE_NAMESPACE, None)
         ns_spec.submodule_search_locations = _submodule_dirs
         ns_pkg = importlib.util.module_from_spec(ns_spec)

tests/test_loader.py

@@ -10,19 +10,19 @@ def get_script_dir(cls):
     def test_loader_simple(self):
         r = self.webhost.request('GET', 'simple')
         self.assertEqual(r.status_code, 200)
-        self.assertEqual(r.text, '__azure__.simple.main')
+        self.assertEqual(r.text, '__app__.simple.main')
 
     def test_loader_custom_entrypoint(self):
         r = self.webhost.request('GET', 'entrypoint')
         self.assertEqual(r.status_code, 200)
-        self.assertEqual(r.text, '__azure__.entrypoint.main')
+        self.assertEqual(r.text, '__app__.entrypoint.main')
 
     def test_loader_subdir(self):
         r = self.webhost.request('GET', 'subdir')
         self.assertEqual(r.status_code, 200)
-        self.assertEqual(r.text, '__azure__.subdir.sub.main')
+        self.assertEqual(r.text, '__app__.subdir.sub.main')
 
     def test_loader_relimport(self):
         r = self.webhost.request('GET', 'relimport')
         self.assertEqual(r.status_code, 200)
-        self.assertEqual(r.text, '__azure__.relimport.relative')
+        self.assertEqual(r.text, '__app__.relimport.relative')