Test samples generated with mix phx.gen.json

Questions / Help
1

I’m trying to run the test samples generated with mix phx.gen.json. However two of the tests are failing. They are:

  1. test does not create todos and renders errors when data is invalid (Todos.Web.TodosControllerTest)
    test/todos/web/controllers/todos_controller_test.exs:36

  2. test does not update chosen todos and renders errors when data is invalid (Todos.Web.TodosControllerTest)
    test/todos/web/controllers/todos_controller_test.exs:53

Both are complaining that (UndefinedFunctionError) function Todos.To.Todos.Web.FallbackController.init/1 is undefined (module Todos.To.Todos.Web.FallbackController is not available). But I don’t understand the call to Todos.To.Todos.Web.FallbackController.init/1 when the code should be calling Todos.Web.FallbackController.

Any help from the community in understanding this will be appreciated.

Update1: When I created a module Todos.To.Todos.Web.FallbackController, the two tests passed. Does this mean I will have to create such module for every context to get tests that need the action fallback to pass?

2

it’s weird that you ended up with Todos.To.Todos.Web namespace, perhaps you incorrectly called one of the generators? I’d expect simply: Todos.Web. Do you recall the exact command you run with mix phx.gen.json or any other previous generator commands?

3

Thanks @wojtekmach This is the command I ran mix phx.gen.json To Todos todos title:string description:string. So I got Todos.To for the api and Todos.To.Todos for the schema, including Todos.Web.FallbackController for the action fallback. But somehow the test expects a Todos.To.Todos.Web.FallbackController module. May be the generated test samples don’t work well with json context. I tried phx.gen.html earlier and all tests passed and so I decided to checkout the the json.

4

Ok I think it might be a name collision issue probably because my top level module is named Todos and I had a nested module Todos.To.Todos. I generated another app without name collision and everything works fine. Thanks @wojtekmach.

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