add fallback for missing description

Author: kkoehn

app/services/proforma_service/convert_task_to_exercise.rb

@@ -23,7 +23,7 @@ def import_task
       @exercise.assign_attributes(
         user: @user,
         title: @task.title,
-        description: @task.description,
+        description: @task.description.presence || @task.title,
         public: string_to_bool(extract_meta_data(@task.meta_data&.dig('meta-data'), 'public')) || false,
         hide_file_tree: string_to_bool(extract_meta_data(@task.meta_data&.dig('meta-data'), 'hide_file_tree')) || false,
         allow_file_creation: string_to_bool(extract_meta_data(@task.meta_data&.dig('meta-data'), 'allow_file_creation')) || false,

spec/services/proforma_service/convert_task_to_exercise_spec.rb

@@ -31,7 +31,7 @@
     let(:task) do
       ProformaXML::Task.new(
         title: 'title',
-        description: 'description',
+        description:,
         proglang: {name: 'python', version: '3.4'},
         uuid: 'uuid',
         parent_uuid: 'parent_uuid',
@@ -49,6 +49,7 @@
     let(:model_solutions) { [] }
     let(:exercise) { nil }
 
+    let(:description) { 'description' }
     let(:meta_data) { {} }
     let(:public) { 'true' }
     let(:hide_file_tree) { 'true' }
@@ -76,6 +77,16 @@
 
     it { is_expected.to be_valid }
 
+    context 'when task has no description' do
+      let(:description) { nil }
+
+      it 'creates an exercise with the correct description fallback' do
+        expect(convert_to_exercise_service).to have_attributes(
+                                                 description: 'title'
+                                               )
+      end
+    end
+
     context 'when meta_data is set' do
       let(:meta_data) do
         {