diff --git a/test/unit/commit_serializer_test.rb b/test/unit/commit_serializer_test.rb
new file mode 100644
index 000000000..5b3c82260
--- /dev/null
+++ b/test/unit/commit_serializer_test.rb
@@ -0,0 +1,16 @@
+# frozen_string_literal: true
+require 'test_helper'
+
+module Shipit
+  class CommitSerializerTest < ActiveSupport::TestCase
+    test 'commit includes author object' do
+      commit = shipit_commits(:first)
+
+      serializer = ActiveModel::Serializer.serializer_for(commit)
+      assert_equal CommitSerializer, serializer
+      serialized = serializer.new(commit).to_json
+
+      assert_json("author.name", commit.author.name, document: serialized)
+    end
+  end
+end
diff --git a/test/unit/deploy_serializer_test.rb b/test/unit/deploy_serializer_test.rb
new file mode 100644
index 000000000..d15be9fa2
--- /dev/null
+++ b/test/unit/deploy_serializer_test.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+require 'test_helper'
+
+module Shipit
+  class DeploySerializerTest < ActiveSupport::TestCase
+    test 'deploy commits includes author object' do
+      deploy = shipit_deploys(:shipit)
+      first_commit_author = deploy.commits.first.author
+
+      serializer = ActiveModel::Serializer.serializer_for(deploy)
+      assert_equal DeploySerializer, serializer
+      serialized = serializer.new(deploy).to_json
+
+      assert_json("commits.0.author.name", first_commit_author.name, document: serialized)
+    end
+  end
+end