WIP: delete urls of a node before creating new ones

lib/radiator/resources.ex

@@ -97,6 +97,20 @@ defmodule Radiator.Resources do
  Repo.delete(url)
  end
 
+ @doc """
+ Deletes all urls for a given node.
+
+ ## Examples
+
+ iex> delete_urls_for_node(node_id)
+ :ok
+
+ """
+ def delete_urls_for_node(node_id) do
+ query = from u in Url, where: u.node_id == ^node_id
+ Repo.delete_all(query)
+ end
+
  @doc """
  Returns an `%Ecto.Changeset{}` for tracking url changes.
 

test/radiator/resources_test.exs

@@ -8,33 +8,30 @@ defmodule Radiator.ResourcesbTest do
  alias Radiator.Resources
  alias Radiator.Resources.Url
 
- describe "urls" do
- setup do
- node =
- OutlineFixtures.node_fixture()
- |> Repo.preload([:episode])
-
- episode = node.episode
-
- %{
- episode: episode,
- node: node
- }
- end
+ @invalid_attrs %{url: nil, start_bytes: nil, size_bytes: nil}
 
- @invalid_attrs %{url: nil, start_bytes: nil, size_bytes: nil}
+ describe "list_urls/0" do
+ setup :set_up_single_url
 
- test "list_urls/0 returns all urls", %{episode: episode, node: node} do
+ test "returns all urls", %{episode: episode, node: node} do
  url = url_fixture(node_id: node.uuid)
  assert Resources.list_urls(episode.id) == [url]
  end
+ end
+
+ describe "get_url!/1" do
+ setup :set_up_single_url
 
  test "get_url!/1 returns the url with given id" do
  url = url_fixture()
  assert Resources.get_url!(url.id) == url
  end
+ end
 
- test "create_url/1 with valid data creates a url", %{node: node} do
+ describe "create_url!/1" do
+ setup :set_up_single_url
+
+ test "creates a url with valid data", %{node: node} do
  valid_attrs = %{url: "some url", start_bytes: 42, size_bytes: 42, node_id: node.uuid}
 
  assert {:ok, %Url{} = url} = Resources.create_url(valid_attrs)
@@ -43,11 +40,15 @@ defmodule Radiator.ResourcesbTest do
  assert url.size_bytes == 42
  end
 
- test "create_url/1 with invalid data returns error changeset" do
+ test "with invalid data returns error changeset" do
  assert {:error, %Ecto.Changeset{}} = Resources.create_url(@invalid_attrs)
  end
+ end
+
+ describe "update_url/2" do
+ setup :set_up_single_url
 
- test "update_url/2 with valid data updates the url" do
+ test "with valid data updates the url" do
  url = url_fixture()
  update_attrs = %{url: "some updated url", start_bytes: 43, size_bytes: 43}
 
@@ -57,21 +58,35 @@ defmodule Radiator.ResourcesbTest do
  assert url.size_bytes == 43
  end
 
- test "update_url/2 with invalid data returns error changeset" do
+ test "with invalid data returns error changeset" do
  url = url_fixture()
  assert {:error, %Ecto.Changeset{}} = Resources.update_url(url, @invalid_attrs)
  assert url == Resources.get_url!(url.id)
  end
+ end
 
+ describe "delete_url/1" do
  test "delete_url/1 deletes the url" do
  url = url_fixture()
  assert {:ok, %Url{}} = Resources.delete_url(url)
  assert_raise Ecto.NoResultsError, fn -> Resources.get_url!(url.id) end
  end
+ end
 
- test "change_url/1 returns a url changeset" do
+ describe "change_url/1" do
+ test "returns a url changeset" do
  url = url_fixture()
  assert %Ecto.Changeset{} = Resources.change_url(url)
  end
  end
+
+ def set_up_single_url(_) do
+ node =
+ OutlineFixtures.node_fixture()
+ |> Repo.preload([:episode])
+
+ episode = node.episode
+
+ {:ok, episode: episode, node: node}
+ end
 end

test/support/fixtures/resources_fixtures.ex

@@ -16,8 +16,8 @@ defmodule Radiator.ResourcesFixtures do
  attrs
  |> Enum.into(%{
  size_bytes: 42,
- start_bytes: 42,
- url: "some url",
+ start_bytes: 23,
+ url: "https://elixirschool.com",
  node_id: node_id
  })
  |> Resources.create_url()