Add spec for SubmissionParametersProjection

app/models/dragnet/survey/submission_parameters_projection.rb

@@ -12,7 +12,7 @@ def project
 
     def answers_attributes
       survey.questions.each_with_object({}) do |q, h|
-        h[q.id] = %i[answer_id reply_id survey_id question_type_id value]
+        h[q.id] = %i[question_id reply_id survey_id question_type_id value]
       end
     end
   end

spec/models/dragnet/survey/submission_parameters_projection_spec.rb

@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+describe Dragnet::Survey::SubmissionParametersProjection do
+  subject(:projection) { described_class.new(survey) }
+
+  let(:survey) { Dragnet::Survey.generate! }
+
+  it 'includes id and survey_id' do
+    expect(projection.project).to include(:id, :survey_id)
+  end
+
+  it 'includes the correct attributes that are required for answer submission' do
+    attributes = %i[question_id reply_id survey_id question_type_id value]
+
+    expect(projection.project.last[:answers_attributes].values.first).to eq(attributes)
+  end
+end