Auto-detect create_app and make_app factory functions

tests/test_cli.py

@@ -51,6 +51,34 @@ def test_find_best_app(test_apps):
         myapp = Flask('appname')
     assert find_best_app(Module) == Module.myapp
 
+    class Module:
+        @staticmethod
+        def create_app():
+            return Flask('appname')
+    assert isinstance(find_best_app(Module), Flask)
+    assert find_best_app(Module).name == 'appname'
+
+    class Module:
+        @staticmethod
+        def make_app():
+            return Flask('appname')
+    assert isinstance(find_best_app(Module), Flask)
+    assert find_best_app(Module).name == 'appname'
+
+    class Module:
+        myapp = Flask('appname1')
+        @staticmethod
+        def create_app():
+            return Flask('appname2')
+    assert find_best_app(Module) == Module.myapp
+
+    class Module:
+        myapp = Flask('appname1')
+        @staticmethod
+        def create_app(foo):
+            return Flask('appname2')
+    assert find_best_app(Module) == Module.myapp
+
     class Module:
         pass
     pytest.raises(NoAppException, find_best_app, Module)
@@ -60,6 +88,12 @@ def test_find_best_app(test_apps):
         myapp2 = Flask('appname2')
     pytest.raises(NoAppException, find_best_app, Module)
 
+    class Module:
+        @staticmethod
+        def create_app(foo):
+            return Flask('appname2')
+    pytest.raises(NoAppException, find_best_app, Module)
+
 
 def test_prepare_exec_for_file(test_apps):
     """Expect the correct path to be set and the correct module name to be returned.