Data exports (#2517)

* Import / export UI

* Data exports

* Lint fixes, brakeman update

test/jobs/family_data_export_job_test.rb

@@ -0,0 +1,32 @@
+require "test_helper"
+
+class FamilyDataExportJobTest < ActiveJob::TestCase
+  setup do
+    @family = families(:dylan_family)
+    @export = @family.family_exports.create!
+  end
+
+  test "marks export as processing then completed" do
+    assert_equal "pending", @export.status
+
+    perform_enqueued_jobs do
+      FamilyDataExportJob.perform_later(@export)
+    end
+
+    @export.reload
+    assert_equal "completed", @export.status
+    assert @export.export_file.attached?
+  end
+
+  test "marks export as failed on error" do
+    # Mock the exporter to raise an error
+    Family::DataExporter.any_instance.stubs(:generate_export).raises(StandardError, "Export failed")
+
+    perform_enqueued_jobs do
+      FamilyDataExportJob.perform_later(@export)
+    end
+
+    @export.reload
+    assert_equal "failed", @export.status
+  end
+end