Happy with friend tests for now

friends/lib/friends/friend.ex

@@ -100,12 +100,28 @@ defmodule Friends.Friend do
     }
   end
 
-  def commit(friend) do
+  def commit(changeset) do
-    friend
+    changeset
+    |> generate_slug
     |> @repo.insert!
     |> load_user
   end
 
+
+  def generate_slug(%Ecto.Changeset{} = changeset) do
+    slug = changeset.changes.name |> to_slug
+
+    changeset |> changeset(%{
+      slug: slug
+    })
+  end
+
+  def generate_slug(%Friend{} = friend) do
+    %{
+      friend | slug: friend.name |> to_slug
+    }
+  end
+
   def create_or_update(params) do
     case params.id do
       :new ->
@@ -165,7 +181,24 @@ defmodule Friends.Friend do
     model
     |> @repo.preload(:user)
   end
-
   def load_user(%Friends.Friend{} = friend), do: friend
 
+  def load_relationships(%Friends.Friend{
+      relationships: %Ecto.Association.NotLoaded{},
+      reverse_relationships: %Ecto.Association.NotLoaded{}
+      } = model) do
+    model
+    |> @repo.preload([:relationships, :reverse_relationships])
+  end
+  def load_relationships(%Friends.Friend{} = friend), do: friend
+
+  def load_preloads(%Friends.Friend{
+    relationships: %Ecto.Association.NotLoaded{},
+    reverse_relationships: %Ecto.Association.NotLoaded{},
+    user: %Ecto.Association.NotLoaded{}} = model) do
+    model
+    |> @repo.preload([:user,:relationships, :reverse_relationships])
+  end
+  def load_preloads(%Friends.Friend{} = friend), do: friend
+
 end

friends/lib/helpers/helpers.ex

@@ -31,6 +31,8 @@ defmodule Helpers do
     |> String.replace(~r/[\(\)]/, "")
   end
 
+  def to_slug(nil), do: nil
+
   def to_slug(name) when is_binary(name) do
     name
     |> String.replace(" ", "-")

friends/test/friends/friend_test.exs

@@ -1,11 +1,63 @@
 defmodule Friends.FriendTest do
   use Friends.DataCase
 
-#  alias Friends.Accounts
+  alias Friends.Friend
 
   import Friends.{AccountsFixtures,FriendsFixtures}
  # alias Friends.Accounts.{User, UserToken}
 
+  describe "new/1" do
+    test "no params" do
+      f = Friend.new()
+      assert f.id == :new
+    end
+    test "with params" do
+      attrs = valid_friend_attributes()
+      f = attrs |> Friend.new()
+      assert f.id == :new
+      assert f.name == attrs |> Map.get(:name)
+    end
+    test "has no loaded preloads" do
+      f = Friend.new()
+      assert %Ecto.Association.NotLoaded{} = f.user
+      assert %Ecto.Association.NotLoaded{} = f.relationships
+      assert %Ecto.Association.NotLoaded{} = f.reverse_relationships
+    end
+  end
+
+  describe "commit/1" do
+    test "changes id" do
+      f = valid_friend_attributes()
+      |> Friend.create()
+      |> Friend.commit()
+
+      assert f.id != :new
+    end
+    test "generates slug" do
+      f = valid_friend_attributes()
+      |> Friend.create()
+      |> Friend.commit()
+
+      assert f.slug != :nil
+      assert f.slug == f.name |> Helpers.to_slug
+    end
+  end
+
+  describe "generate_slug/1" do
+    test "a new friend has no slug" do
+      f = valid_friend_attributes() |> Friend.new()
+      assert f.slug == nil
+    end
+    test "generate_slug generates a slug, returns a friend" do
+      f = valid_friend_attributes() |> Friend.new() |> Friend.generate_slug
+      assert f.slug == f.name |> Helpers.to_slug
+    end
+    test "generate_slug generates a slug, returns a changeset" do
+      c = valid_friend_attributes() |> Friend.create() |> Friend.generate_slug
+      f = c.data
+      assert f.slug == f.name |> Helpers.to_slug
+    end
+  end
 
     describe "assign_user/1" do
       setup do
@@ -30,5 +82,33 @@ defmodule Friends.FriendTest do
           end
   end
 
+  describe "preloads" do
+    setup do
+      %{friend:
+        %{
+          Friend.new | id: 123
+        }
+      }
+    end
+
+    test "load user", %{friend: friend} do
+      f = friend |> Friend.load_user
+      refute f.user == %Ecto.Association.NotLoaded{}
+    end
+
+    test "load relationships", %{friend: friend} do
+      f = friend |> Friend.load_relationships
+      refute f.relationships == %Ecto.Association.NotLoaded{}
+      refute f.reverse_relationships == %Ecto.Association.NotLoaded{}
+    end
+
+    test "load all", %{friend: friend} do
+      f = friend |> Friend.load_preloads
+      refute f.user == %Ecto.Association.NotLoaded{}
+      refute f.relationships == %Ecto.Association.NotLoaded{}
+      refute f.reverse_relationships == %Ecto.Association.NotLoaded{}
+    end
+
+  end
 
 end

friends/test/support/fixtures/friends_fixtures.ex

@@ -5,9 +5,9 @@ defmodule Friends.FriendsFixtures do
   """
   def random_string(length) do
     :crypto.strong_rand_bytes(length)
-    |> String.replace("-", "")
     |> Base.url_encode64
     |> binary_part(0, length)
+    |> String.replace(~r/-/, "")
   end
 
   def unique_friend_email, do: "user#{System.unique_integer()}@example.com"