Add test, update logs with different LAs

lib/tasks/correct_renewal_postcodes.rake

@@ -1,6 +1,13 @@
 desc "Update lettings logs renewal previous postcode and la data to be the same as current postcode/la"
 task correct_renewal_postcodes: :environment do
-  LettingsLog.filter_by_year(2023).where(renewal: 1).where("(ppostcode_full != postcode_full) OR (ppostcode_full IS NULL AND postcode_full IS NOT NULL) OR (postcode_full IS NULL AND ppostcode_full IS NOT NULL)").each do |log|
+  LettingsLog.filter_by_year(2023).where(renewal: 1).where("
+    ((ppostcode_full != postcode_full)
+    OR (ppostcode_full IS NULL AND postcode_full IS NOT NULL)
+    OR (postcode_full IS NULL AND ppostcode_full IS NOT NULL))
+    OR ((prevloc != la)
+    OR (la IS NULL AND prevloc IS NOT NULL)
+    OR (prevloc IS NULL AND la IS NOT NULL))
+    ").each do |log|
     log.ppostcode_full = log.postcode_full
     log.ppcodenk = case log.postcode_known
                    when 0

spec/lib/tasks/correct_renewal_postcodes_spec.rb

@@ -32,6 +32,26 @@ RSpec.describe "correct_renewal_postcodes" do
         end
       end
 
+      context "and there there is a non renewal lettings log with different previous postcode" do
+        let(:log) { create(:lettings_log, :completed, postcode_full: "SW1A 1AA", ppostcode_full: "AA1 1AA") }
+
+        before do
+          log.renewal = 0
+          log.values_updated_at = nil
+          log.save!(validate: false)
+        end
+
+        it "does not update and reexport the previous postcode" do
+          expect(log.ppostcode_full).to eq("AA1 1AA")
+
+          task.invoke
+          log.reload
+
+          expect(log.ppostcode_full).to eq("AA1 1AA")
+          expect(log.values_updated_at).to eq(nil)
+        end
+      end
+
       context "and there there is a renewal lettings log with missing previous postcode" do
         let(:log) { create(:lettings_log, :completed, postcode_full: "SW1A 1AA", ppostcode_full: nil) }
 
@@ -92,6 +112,86 @@ RSpec.describe "correct_renewal_postcodes" do
         end
       end
 
+      context "and there is a renewal lettings log with same nil postcodes" do
+        let(:log) { create(:lettings_log, :completed, postcode_known: 0, la: "E07000223", prevloc: "E07000223", postcode_full: nil, ppostcode_full: nil) }
+
+        before do
+          log.renewal = 1
+          log.values_updated_at = nil
+          log.save!(validate: false)
+        end
+
+        it "does not update the previous postcode and does not re-export" do
+          expect(log.ppostcode_full).to eq(nil)
+
+          task.invoke
+          log.reload
+
+          expect(log.ppostcode_full).to eq(nil)
+          expect(log.values_updated_at).to eq(nil)
+        end
+      end
+
+      context "and there is a renewal lettings log with same nil postcodes and different la" do
+        let(:log) { create(:lettings_log, :completed, postcode_known: 0, postcode_full: nil, la: "E07000223", ppostcode_full: nil, prevloc: "E07000026") }
+
+        before do
+          log.renewal = 1
+          log.values_updated_at = nil
+          log.save!(validate: false)
+        end
+
+        it "updates the previous la and reexports the log" do
+          expect(log.ppostcode_full).to eq(nil)
+
+          task.invoke
+          log.reload
+
+          expect(log.prevloc).to eq("E07000223")
+          expect(log.values_updated_at).not_to eq(nil)
+        end
+      end
+
+      context "and there is a renewal lettings log with same nil postcodes, la not nil and prevloc nil" do
+        let(:log) { create(:lettings_log, :completed, postcode_known: 0, postcode_full: nil, la: "E07000223", ppostcode_full: nil, previous_la_known: 0, prevloc: nil) }
+
+        before do
+          log.renewal = 1
+          log.values_updated_at = nil
+          log.save!(validate: false)
+        end
+
+        it "updates the previous la and reexports the log" do
+          expect(log.ppostcode_full).to eq(nil)
+
+          task.invoke
+          log.reload
+
+          expect(log.prevloc).to eq("E07000223")
+          expect(log.values_updated_at).not_to eq(nil)
+        end
+      end
+
+      context "and there is a renewal lettings log with same nil postcodes, la nil and prevloc not nil" do
+        let(:log) { create(:lettings_log, :completed, postcode_known: 0, postcode_full: nil, la: nil, ppostcode_full: nil, prevloc: "E07000223") }
+
+        before do
+          log.renewal = 1
+          log.values_updated_at = nil
+          log.save!(validate: false)
+        end
+
+        it "updates the previous la and reexports the log" do
+          expect(log.ppostcode_full).to eq("E07000223")
+
+          task.invoke
+          log.reload
+
+          expect(log.prevloc).to eq(nil)
+          expect(log.values_updated_at).not_to eq(nil)
+        end
+      end
+
       context "and there is a renewal lettings log from closed collection year" do
         let(:log) { create(:lettings_log, :completed, postcode_full: "AA1 1AA", ppostcode_full: nil) }