test: update error message to be a real error message

spec/services/bulk_upload/lettings/row_parser_spec.rb

@@ -206,21 +206,22 @@ RSpec.describe BulkUpload::Lettings::RowParser do
           it "adds an error to all (and only) the fields used to determine duplicity" do
             parser.valid?
 
+            error_message = "This is a duplicate log"
             expected_errors = {
-              :field_96 => ["test"], # startdate
-              :field_97 => ["test"], # startdate
-              :field_98 => ["test"], # startdate
-              :field_108 => ["test"], # postcode_full
-              :field_109 => ["test"], # postcode_full
-              :field_80 => ["test"], # brent
-              :field_81 => ["test"], # scharge
-              :field_82 => ["test"], # pscharge
-              :field_83 => ["test"], # supcharg
-              :field_7 => ["test"], # tenancycode
-              :field_12 => ["test"], # age1
-              :field_20 => ["test"], # sex1
-              :field_35 => ["test"], # ecstat1
-              :field_43 => ["test"], # ethnic
+              :field_96 => [error_message], # startdate
+              :field_97 => [error_message], # startdate
+              :field_98 => [error_message], # startdate
+              :field_108 => [error_message], # postcode_full
+              :field_109 => [error_message], # postcode_full
+              :field_80 => [error_message], # brent
+              :field_81 => [error_message], # scharge
+              :field_82 => [error_message], # pscharge
+              :field_83 => [error_message], # supcharg
+              :field_7 => [error_message], # tenancycode
+              :field_12 => [error_message], # age1
+              :field_20 => [error_message], # sex1
+              :field_35 => [error_message], # ecstat1
+              :field_43 => [error_message], # ethnic
             }
             expect(parser.errors.as_json).to eq(expected_errors)
           end