Renamed tests, fix default

lib/assessor.rb

@@ -5,7 +5,7 @@ class Assessor
     test_outcome = @testing_framework_adapter.test_outcome(output)
     test_outcome.merge(score: calculate_score(test_outcome))
   rescue
-    {score: 0}
+    {score: 0.0}
   end
 
   def calculate_score(test_outcome)

spec/models/submission_spec.rb

@@ -53,7 +53,7 @@ describe Submission do
     context 'without a score' do
       before(:each) { submission.score = nil }
 
-      it 'returns nil' do
+      it 'returns 0' do
         expect(submission.normalized_score).to be 0
       end
     end
@@ -72,7 +72,7 @@ describe Submission do
     context 'without a score' do
       before(:each) { submission.score = nil }
 
-      it 'returns nil' do
+      it 'returns 0' do
         expect(submission.percentage).to be 0
       end
     end