Add the json fetchers to scrape the API.

test/decentralised_book_index/sync/api_clients/fetch_json_test.exs

@@ -0,0 +1,18 @@
+defmodule DecentralisedBookIndex.Sync.ApiClients.FetchJsonTest do
+  use DecentralisedBookIndex.DataCase
+
+  alias DecentralisedBookIndex.Sync.ApiClients.FetchJson
+  alias DecentralisedBookIndex.Metadata
+
+  alias DecentralisedBookIndex.TestEndpoints
+  @test_server_endpoint TestEndpoints.test_api_endpoint()
+
+  describe "authors api" do
+    test "get an author" do
+      {:ok, author} = Metadata.create_author("Author", "An description")
+
+      assert {:ok, data} = FetchJson.get("#{@test_server_endpoint}/api/v1/json/author/#{author.id}")
+      assert data["data"]["id"] == author.id
+    end
+  end
+end

test/decentralised_book_index/sync/api_clients/fetch_jsons_test.exs

@@ -0,0 +1,21 @@
+defmodule DecentralisedBookIndex.Sync.ApiClients.FetchJsonsTest do
+  use DecentralisedBookIndex.DataCase
+
+  alias DecentralisedBookIndex.Sync.ApiClients.FetchJsons
+  alias DecentralisedBookIndex.Metadata
+
+  alias DecentralisedBookIndex.TestEndpoints
+
+  @test_server_endpoint TestEndpoints.test_api_endpoint()
+
+  describe "authors api" do
+    test "get authors" do
+      for number <- 1..11 do
+        Metadata.create_author!("Author#{number}", "An description#{number}")
+      end
+
+      assert {:ok, records} = FetchJsons.get("#{@test_server_endpoint}/api/v1/json/author")
+      assert length(records) == 11
+    end
+  end
+end