assert_schema passing with any map

[LuizFerK]

I'm making a test for my schema response and the assert_schema function pass with any map that I use in the function argument. For example, this test shouldn't pass, but it does:

Example 1:

test "EventController index produces a Event list", %{conn: conn} do
  public_spec = Public.spec()
  assert_schema(%{}, "Event", public_spec)
end

also does this (the real test):

Example 2:

test "EventController index produces a Event list", %{conn: conn} do
  response =
    conn
    |> get(Routes.api_public_event_path(conn, :index))
    |> json_response(200)

  public_spec = Public.spec()
  assert_schema(response, "Event", public_spec)
end

Only don't pass if I use something different of a map in the assert_schema arguments:

Example 3:

test "EventController index produces a Event list", %{conn: conn} do
  public_spec = Public.spec()
  assert_schema([], "Event", public_spec)
end

My question and the whole problem is: why does Example 1 pass the assert? It should only pass if the result is exactly equal to the schema (like Example 2).

My "Event" schema looks like this:

%OpenApiSpex.Schema%{
  example: %{
    id: "d36bcaf0-f0a0-4ad1-a038-e7d3ba951b17",
    json_data: nil,
    str_type: "Event example",
    ts_created_at: "2022-03-01T17:00:25.442265Z"
  },
  properties: %{
    id: %OpenApiSpex.Reference{"$ref": "#/components/schemas/UUID"},
    json_data: %OpenApiSpex.Schema%{description: "Event data", type: :object},
    str_type: %OpenApiSpex.Schema%{
      description: "Event type",
      maxLength: 64,
      type: :string
    },
    ts_created_at: %OpenApiSpex.Schema%{
      description: "Date-time when the Event was created",
      format: "date-time",
      type: :string
    }
  },
  title: "Event",
  type: :object,
  "x-struct": MyApp.Swagger.Schemas.Event
}

[mbuhot]

It might be because your schema doesn't have any required properties. So any map is actually a valid data for the schema.
What happens if you change your schema to the following?

%OpenApiSpex.Schema%{
  example: %{
    id: "d36bcaf0-f0a0-4ad1-a038-e7d3ba951b17",
    json_data: nil,
    str_type: "Event example",
    ts_created_at: "2022-03-01T17:00:25.442265Z"
  },
  properties: %{
    id: %OpenApiSpex.Reference{"$ref": "#/components/schemas/UUID"},
    json_data: %OpenApiSpex.Schema%{description: "Event data", type: :object},
    str_type: %OpenApiSpex.Schema%{
      description: "Event type",
      maxLength: 64,
      type: :string
    },
    ts_created_at: %OpenApiSpex.Schema%{
      description: "Date-time when the Event was created",
      format: "date-time",
      type: :string
    }
  },
  required: [:id, :json_data, :str_type, :ts_created_at],
  title: "Event",
  type: :object,
  "x-struct": MyApp.Swagger.Schemas.Event
}

[LuizFerK]

oh god, can't believe it's just it...
sorry for bothering you again and thanks for the quick response

it works, I also needed to use the nullable: true in some properties, but now is all good