Specs: add specs for StoryRepository

Also adjust the way that factories are required and introduce a
`next_id` helper. There are still some untested methods in
StoryRepository which I will continue to work on in followups.

spec/factories.rb

@@ -0,0 +1,15 @@
+require_relative "factories/feed_factory"
+require_relative "factories/story_factory"
+require_relative "factories/user_factory"
+require_relative "factories/group_factory"
+require_relative "factories/feeds"
+require_relative "factories/groups"
+require_relative "factories/stories"
+require_relative "factories/users"
+
+module Factories
+  def next_id
+    @next_id ||= 0
+    @next_id += 1
+  end
+end

spec/factories/stories.rb

@@ -4,6 +4,6 @@ def create_story(params = {})
   end
 
   def build_story(params = {})
-    Story.new(feed: build_feed, **params)
+    Story.new(entry_id: next_id, feed: build_feed, **params)
   end
 end

spec/repositories/story_repository_spec.rb

@@ -1,4 +1,5 @@
 require "spec_helper"
+require "support/active_record"
 
 app_require "repositories/story_repository"
 
@@ -35,6 +36,52 @@
     end
   end
 
+  describe ".fetch" do
+    it "finds the story by id" do
+      story = create_story
+
+      expect(StoryRepository.fetch(story.id)).to eq(story)
+    end
+  end
+
+  describe ".fetch_by_ids" do
+    it "finds all stories by id" do
+      story1 = create_story
+      story2 = create_story
+      expected_stories = [story1, story2]
+
+      actual_stories = StoryRepository.fetch_by_ids(expected_stories.map(&:id))
+
+      expect(actual_stories).to match_array(expected_stories)
+    end
+  end
+
+  describe ".fetch_unread_by_timestamp" do
+    it "returns unread stories from before the timestamp" do
+      story = create_story(created_at: 1.week.ago, is_read: false)
+
+      actual_stories = StoryRepository.fetch_unread_by_timestamp(4.days.ago)
+
+      expect(actual_stories).to eq([story])
+    end
+
+    it "does not return unread stories from after the timestamp" do
+      create_story(created_at: 3.days.ago, is_read: false)
+
+      actual_stories = StoryRepository.fetch_unread_by_timestamp(4.days.ago)
+
+      expect(actual_stories).to be_empty
+    end
+
+    it "does not return read stories from before the timestamp" do
+      create_story(created_at: 1.week.ago, is_read: true)
+
+      actual_stories = StoryRepository.fetch_unread_by_timestamp(4.days.ago)
+
+      expect(actual_stories).to be_empty
+    end
+  end
+
   describe ".extract_url" do
     it "returns the url" do
       feed = double(url: "http://github.com")

spec/spec_helper.rb

@@ -9,14 +9,7 @@
 require "date"
 
 require_relative "support/coverage"
-require "factories/feed_factory"
-require "factories/story_factory"
-require "factories/user_factory"
-require "factories/group_factory"
-require "factories/feeds"
-require "factories/groups"
-require "factories/stories"
-require "factories/users"
+require_relative "factories"
 
 require "./app"