add tests

test/feed_reader/result_types_test.exs

@@ -0,0 +1,46 @@
+defmodule FeedReader.ResultTypesTest do
+  use ExUnit.Case, async: true
+
+  alias FeedReader.{Feed, Fetch, Item, ParseResult, RemoteResult, Session}
+
+  test "fetch stores remote HTTP metadata" do
+    fetch = %Fetch{
+      etag: "\"version-1\"",
+      checksum: "d41d8cd98f00b204e9800998ecf8427e",
+      final_url: "https://example.com/feed.xml",
+      status: 200
+    }
+
+    assert fetch.etag == "\"version-1\""
+    assert fetch.checksum == "d41d8cd98f00b204e9800998ecf8427e"
+    assert fetch.final_url == "https://example.com/feed.xml"
+    assert fetch.status == 200
+  end
+
+  test "parse results contain local feed data without fetch metadata" do
+    item = %Item{uuid: "item-1"}
+    result = %ParseResult{feed: %Feed{title: "Example"}, items: [item]}
+
+    assert result.feed.title == "Example"
+    assert result.items == [item]
+    refute Map.has_key?(result, :fetch)
+  end
+
+  test "remote results pair collected data with fetch metadata" do
+    fetch = %Fetch{checksum: "checksum", final_url: "https://example.com", status: 200}
+    result = %RemoteResult{feed: %Feed{}, items: [], fetch: fetch}
+
+    assert result.fetch == fetch
+    assert result.items == []
+  end
+
+  test "sessions distinguish remote and local fetch ownership" do
+    events = [{:feed, %Feed{}}]
+    remote = %Session{events: events, fetch: %Fetch{status: 200}}
+    local = %Session{events: events}
+
+    assert Enum.to_list(remote.events) == events
+    assert remote.fetch.status == 200
+    assert local.fetch == nil
+  end
+end