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Programming language: Elixir
License: MIT License
Tags: Testing    

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README

Apocryphal

Swagger based documentation driven development for ExUnit

Installation

def deps do
  [{:apocryphal, "~> 0.2.0", only: [:test, :dev]}]
end
mix deps.get
mix apocryphal.init

Add HTTPoison.start to test_helper.exs:

ExUnit.start
HTTPoison.start
Ecto.Adapters.SQL.Sandbox.mode(PetStore.Repo, :manual)

Configure for Phoenix (HTTP Requests, SQL Sandbox)

Configure test.exs env to use Ecto SQL Sandbox and serve content

config :YOUR_APP, YOUR_APP.Endpoint,
  http: [port: 4001],
  server: true

config :YOUR_APP, :sql_sandbox, true

Configure lib/YOUR_APP/endpoint.ex

if Application.get_env(:YOUR_APP, :sql_sandbox) do
  plug Phoenix.Ecto.SQL.Sandbox
end

Configure Apocryphal

config :apocryphal,
  port: 4001,
  host: "localhost",
  serializers: %{
    "application/json" => fn(body) -> Poison.encode!(body) end
  },
  deserializers: %{
    "application/json" => fn(body) -> Poison.decode!(body) end
  }

Configure for Plug

TBD

Usage

Generating an API verification test

Parse swagger documentation into ExUnit tests

mix apocryphal.gen.test V1.Pets --only=^\/pets --swagger-file=./docs/pet_store.yml
mix apocryphal.gen.test V1.Stores --only=^\/stores --swagger-file=./docs/pet_store.yml

"One big file" mode:

mix apocryphal.gen.test V1.PetAPI --swagger-file=./docs/pet_store.yml

Then just run mix test.

Full Example

Check out the Petz Sample Phoenix app

defmodule PetStore.V1.PetAPITest do
  use Apocryphal.Case
  alias PetStore.Pet
  alias PetStore.Store

  @swagger "./docs/pet_store.yml"
  @mime "application/json"

  test "[GET] /stores (200)" do
    %Store{ address: "123 Ship St.",
            city: "Los Angeles",
            state: "CA",
            postal_code: "90210" } |> Repo.insert!


    # assert_schema/1 will dispatch the transaction if a request isn't
    # present, or it can be manually dispatched
    @swagger
    |> Apocryphal.Transaction.get("/stores", 200, @mime)
    |> Apocryphal.Transaction.dispatch
    |> assert_schema

    # @swagger
    # |> Apocryphal.Transaction.get("/stores", 200, @mime)
    # |> assert_schema
  end

  test "[GET] /pets (200)" do
    %Pet{ name: "Chauncy", type: "dog" } |> Repo.insert!

    @swagger
    |> Apocryphal.Transaction.get("/pets", 200, @mime)
    |> put_in([:request, :params], [limit: 20])
    |> assert_schema
  end

  test "[POST] /pets (201)" do
    pet_params = %{ pet: %{ name: "Chuancy", type: "cat" } }
    @swagger
    |> Apocryphal.Transaction.post("/pets", 201, @mime)
    |> put_in([:request, :body], pet_params)
    |> assert_schema
  end

  test "[POST] /pets 422" do
    pet_params = %{ pet: %{ name: "Doge", type: "pupperino" } }
    @swagger
    |> Apocryphal.Transaction.post("/pets", 422, @mime)
    |> put_in([:request, :body], pet_params)
    |> assert_schema
  end

  test "[GET] /pets/{id} (200)" do
    pet = %Pet{name: "Chauncy", type: "cat"} |> Repo.insert!

    @swagger
    |> Apocryphal.Transaction.get("/pets/{id}", 200, @mime)
    |> put_in([:request, :path_params], %{"id" => pet.id})
    |> assert_schema
  end

  test "[GET] /pets/{id} (404)" do
    @swagger
    |> Apocryphal.Transaction.get("/pets/{id}", 404, @mime)
    |> put_in([:request, :path_params], %{"id" => "-1"})
    |> assert_schema
  end
end

Using remote swagger files

Under the hood Apocryphal uses ExJsonSchema. To set up resolves for remote schemas see the ExJsonSchema docs

Note for Umbrella apps

If you are creating an umbrella app YOUR_APP above should be the app containing the ecto repo!

Issues have been experience with async tests with umbrella apps where Ecto raises an Ownership.Error. Setting the tests explicitly as async: false fixes this.