add test for gpkg with no srs

spec/models/data_import_spec.rb

@@ -347,6 +347,19 @@ describe DataImport do
     table.should_not be_nil
   end
 
+  it 'imports a gpkg with no coordinate system' do
+    data_import = DataImport.create(
+      user_id: @user.id,
+      data_source: fake_data_path('no_coordinate_system_dataset.gpkg'),
+      updated_at: Time.now
+    ).run_import!
+
+    table = ::UserTable.where(id: data_import.table_id).first
+    table.should_not be_nil
+    table.name.should be == 'no_coordinate_system_dataset'
+    table.service.records[:rows].should have(1).items
+  end
+
   it 'should allow to create a table from a url' do
     data_import = nil
     CartoDB::Importer2::Downloader.any_instance.stubs(:validate_url!).returns(true)