Codegen for mocks fails on filename case mismatch.

[vaneek]

Using the PDK shopping list demo , the generated code breaks during the build process with the following error;

File "/home/ec2-user/environment/tpdk/packages/api/generated/infrastructure/python/orgapi_python_infra/mock_integrations.py", line 23, in delete_shopping_list_200
infra:     with open(path.join(MOCK_DATA_PATH, "DELETE{}-200.json".format("/shopping-list/{shoppingListId}".replace("/", "-")).lower()), "r") as f:
infra:          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
infra: FileNotFoundError: [Errno 2] No such file or directory: '/home/ec2-user/environment/tpdk/packages/api/generated/infrastructure/python/orgapi_python_infra/../mocks/delete-shopping-list-{shoppinglistid}-200.json'

The code performs a .lower() on the whole path rather than just the verb. The name of the generated json file is delete-shopping-list-{shoppingListId}-200.json. This may also catch upstream directories with caps in their name.

The smithy definition is;

@http(method: "DELETE", uri: "/shopping-list/{shoppingListId}")
@handler(language: "python")
operation DeleteShoppingList {
    input := {
        @required
        @httpLabel
        shoppingListId: ShoppingListId
    }
    output := with [ShoppingListIdMixin] {}
    errors: [NotFoundError]
}

[JordonPhillips]

The PDK isn't making use of this project, I would recommend opening this issue in aws/aws-pdk