Update the Links.create_one to support options for the generator.

lib/link_shortener/links/links.ex

@@ -9,8 +9,28 @@ defmodule LinkShortener.Links do
 
   def new_one(), do: Link.changeset(%Link{}, %{})
 
-  def create_one(attrs, length \\ 10, generator \\ &LinkGenerator.generate_one/2) do
+  @doc """
-    generator.(attrs, length)
+  Create a Link with random shorten with the length.
+
+  ## Options
+    • :is_atom_based (boolean, true by default) - if a map is
+      atom-based, then a key for shorten will be :shorten, else
+      "shorten".
+    • :length (integer, 10 by default) - the length for
+      the shorten.
+    • :generator (function) - the shorten is generated by the
+      generator function.
+      LinkShortener.Generators.LinkWithRandomShorten.generate_one/2 by
+      default.
+  """
+  @spec create_one(map(), [is_atom_based: boolean(), length: integer(), generator: function()]) ::
+          [map()]
+  def create_one(attrs, opts \\ []) do
+    is_atom_based = Keyword.get(opts, :is_atom_based, true)
+    length = Keyword.get(opts, :length, 10)
+    generator = Keyword.get(opts, :generator, &LinkGenerator.generate_one/2)
+
+    generator.(attrs, is_atom_based: is_atom_based, length: length)
     |> insert_one()
   end
 

test/link_shortener/links_test.exs

@@ -50,7 +50,7 @@ defmodule LinkShortener.LinksTest do
     test "create_one/2 with valid data creates a link", %{user: user} do
       assert {:ok, %Link{} = link} =
 	with_user(@create_generated_attrs, user)
-	|> Links.create_one(5)
+	|> Links.create_one(length: 5)
 
       assert link.name == "some link name"
       assert link.url == "https://gitlab.com/KKlochko/link_shortener"