Add helper function to create multiple requests from urls

lib/crawly/utils.ex

@@ -8,9 +8,13 @@ defmodule Crawly.Utils do
   A helper function which returns a Request structure for the given URL
   """
   @spec request_from_url(binary()) :: Crawly.Request.t()
-  def request_from_url(url) do
-    %Crawly.Request{url: url, headers: []}
-  end
+  def request_from_url(url), do: %Crawly.Request{url: url, headers: []}
+
+  @doc """
+  A helper function which converts a list of URLS into a requests list.
+  """
+  @spec requests_from_urls([binary()]) :: [Crawly.Request.t()]
+  def requests_from_urls(urls), do: Enum.map(urls, &request_from_url/1)
 
   @doc """
   Pipeline/Middleware helper

test/utils_test.exs

@@ -0,0 +1,21 @@
+defmodule UtilsTest do
+  use ExUnit.Case
+
+  test "Request from url" do
+    requests = Crawly.Utils.request_from_url("https://test.com")
+    assert requests == %Crawly.Request{url: "https://test.com", headers: []}
+  end
+
+  test "Requests from urls" do
+    requests =
+      Crawly.Utils.requests_from_urls([
+        "https://test.com",
+        "https://example.com"
+      ])
+
+    assert requests == [
+             %Crawly.Request{url: "https://test.com", headers: []},
+             %Crawly.Request{url: "https://example.com", headers: []}
+           ]
+  end
+end