1 files changed, 57 insertions, 0 deletions
diff --git a/spec/lib/gitlab/import_export/model_configuration_spec.rb b/spec/lib/gitlab/import_export/model_configuration_spec.rb
new file mode 100644
index 00000000000..9b492d1b9c7
--- /dev/null
+++ b/spec/lib/gitlab/import_export/model_configuration_spec.rb
@@ -0,0 +1,57 @@
+require 'spec_helper'
+
+# Part of the test security suite for the Import/Export feature
+# Finds if a new model has been added that can potentially be part of the Import/Export
+# If it finds a new model, it will show a +failure_message+ with the options available.
+describe 'Import/Export model configuration', lib: true do
+  include ConfigurationHelper
+
+  let(:config_hash) { YAML.load_file(Gitlab::ImportExport.config_file).deep_stringify_keys }
+  let(:model_names) do
+    names = names_from_tree(config_hash['project_tree'])
+
+    # Remove duplicated or add missing models
+    # - project is not part of the tree, so it has to be added manually.
+    # - milestone, labels have both singular and plural versions in the tree, so remove the duplicates.
+    # - User, Author... Models we do not care about for checking models
+    names.flatten.uniq - ['milestones', 'labels', 'user', 'author'] + ['project']
+  end
+
+  let(:all_models_yml) { 'spec/lib/gitlab/import_export/all_models.yml' }
+  let(:all_models) { YAML.load_file(all_models_yml) }
+  let(:current_models) { setup_models }
+
+  it 'has no new models' do
+    model_names.each do |model_name|
+      new_models = Array(current_models[model_name]) - Array(all_models[model_name])
+      expect(new_models).to be_empty, failure_message(model_name.classify, new_models)
+    end
+  end
+
+  # List of current models between models, in the format of
+  # {model: [model_2, model3], ...}
+  def setup_models
+    all_models_hash = {}
+
+    model_names.each do |model_name|
+      model_class = relation_class_for_name(model_name)
+
+      all_models_hash[model_name] = associations_for(model_class) - ['project']
+    end
+
+    all_models_hash
+  end
+
+  def failure_message(parent_model_name, new_models)
+    <<-MSG
+      New model(s) <#{new_models.join(',')}> have been added, related to #{parent_model_name}, which is exported by
+      the Import/Export feature.
+
+      If you think this model should be included in the export, please add it to IMPORT_EXPORT_CONFIG.
+      Definitely add it to MODELS_JSON to signal that you've handled this error and to prevent it from showing up in the future.
+
+      MODELS_JSON: #{File.expand_path(all_models_yml)}
+      IMPORT_EXPORT_CONFIG: #{Gitlab::ImportExport.config_file}
+    MSG
+  end
+end