test: ensure student imports merge tutorials when enabled

Author: b0ink

test/models/unit_model_test.rb

@@ -20,7 +20,8 @@ class UnitModelTest < ActiveSupport::TestCase
   def test_sync_unit
     import_settings = {
       replace_existing_campus: false,
-      replace_existing_tutorial: false
+      replace_existing_tutorial: false,
+      merge_duplicate_students: false
     }
 
     student = FactoryBot.create :user, :student
@@ -84,6 +85,75 @@ def test_sync_unit
     campus2.destroy!
   end
 
+  def test_sync_unit_merge_duplicate_students
+    import_settings = {
+      replace_existing_campus: false,
+      replace_existing_tutorial: true,
+      merge_duplicate_students: true
+    }
+
+    student = FactoryBot.create :user, :student
+
+    tutorial_stream1 = @unit.tutorial_streams.first
+    tutorial_stream2 = FactoryBot.create(:tutorial_stream, unit: @unit)
+
+    tutorial1 = FactoryBot.create :tutorial, unit: @unit, campus: Campus.first, tutorial_stream: tutorial_stream1
+    tutorial2 = FactoryBot.create :tutorial, unit: @unit, campus: Campus.first, tutorial_stream: tutorial_stream2
+
+    student_list = [
+      {
+        unit_code: 'COS10001',
+        username: student.username,
+        student_id: student.student_id,
+        first_name: student.first_name,
+        last_name: student.last_name,
+        nickname: student.nickname,
+        email: student.email,
+        tutorials: [tutorial1.abbreviation],
+        enrolled: true,
+        campus: Campus.first.abbreviation
+      },
+      {
+        unit_code: 'COS10001',
+        username: student.username,
+        student_id: student.student_id,
+        first_name: student.first_name,
+        last_name: student.last_name,
+        nickname: student.nickname,
+        email: student.email,
+        tutorials: [tutorial2.abbreviation],
+        enrolled: true,
+        campus: Campus.first.abbreviation
+      }
+    ]
+
+    result = {
+      success: [],
+      ignored: [],
+      errors: []
+    }
+
+    @unit.sync_enrolment_with(student_list, import_settings, result)
+
+    assert_equal 1, result[:ignored].count, result.inspect
+    assert_equal 0, result[:errors].count, result.inspect
+    assert_equal 1, result[:success].count, result.inspect
+
+    assert_equal 2, @unit.tutorials.count
+
+    project = @unit.projects.first
+    assert project.valid?
+
+    # Ensure that tutorials from both rows were merged and student was enrolled into each
+    assert project.enrolled_in?(tutorial1)
+    assert project.enrolled_in?(tutorial2)
+
+    @unit.projects.first.destroy
+    tutorial1.destroy!
+    tutorial2.destroy!
+    tutorial_stream2.destroy!
+  end
+
   def test_import_tasks_worked
     @unit.import_tasks_from_csv File.open(Rails.root.join('test_files', "#{@unit.code}-Tasks.csv"))
     assert_equal 37, @unit.task_definitions.count, 'imported all task definitions'