test/assignment_test.rb in verdict-0.8.0 vs test/assignment_test.rb in verdict-0.9.0

@@ -18,15 +18,15 @@
     assert_equal :control, assignment.to_sym
     assert_equal 'control', assignment.handle
     assert_kind_of Time, assignment.created_at
 
     non_assignment = Verdict::Assignment.new(@experiment, 'test_subject_id', nil, nil)
-    assert_equal nil, non_assignment.group
+    assert_nil non_assignment.group
     assert !non_assignment.returning?
     assert !non_assignment.qualified?
-    assert_equal nil, non_assignment.to_sym
-    assert_equal nil, non_assignment.handle
+    assert_nil non_assignment.to_sym
+    assert_nil non_assignment.handle
     assert_kind_of Time, assignment.created_at
   end
 
   def test_subject_identifier_lookup
     klass = Struct.new(:id)
@@ -66,10 +66,10 @@
       json = JSON.parse(non_assignment.to_json)
       assert_equal 'assignment test', json['experiment']
       assert_equal 'test_subject_id', json['subject']
       assert_equal false, json['qualified']
       assert_equal false, json['returning']
-      assert_equal nil, json['group']
+      assert_nil json['group']
       assert_equal '2012-01-01T00:00:00Z', json['created_at']
     end
   end
 
   def test_returning_assignment