Add PointSerializer spec

app/services/exports/create.rb

@@ -13,11 +13,12 @@ class Exports::Create
     export.update!(status: :processing)
 
     points = time_framed_points
-    data   = points_data(points)
+
+    data = points_data(points)
 
     create_export_file(data)
 
-    export.update!(status: :completed, url: "exports/#{export.name}.#{format}")
+    export.update!(status: :completed, url: "exports/#{export.name}.#{file_format}")
 
     create_export_finished_notification
   rescue StandardError => e

spec/serializers/point_serializer_spec.rb

@@ -0,0 +1,22 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe PointSerializer do
+  describe '#call' do
+    subject(:serializer) { described_class.new(point).call }
+
+    let(:point) { create(:point) }
+    let(:expected_json) do
+      point.attributes.except(*PointSerializer::EXCLUDED_ATTRIBUTES)
+    end
+
+    it 'returns JSON' do
+      expect(serializer.to_json).to eq(expected_json.to_json)
+    end
+
+    it 'does not include excluded attributes' do
+      expect(serializer).not_to include(*PointSerializer::EXCLUDED_ATTRIBUTES)
+    end
+  end
+end