Reset wchair when needstype changes from supported housing to not supported housing

Co-authored-by: James Rose <jamesrose@users.noreply.github.com>

app/models/case_log.rb

@@ -536,7 +536,8 @@ private
     dependent_questions = { waityear: [{ key: :renewal, value: 0 }],
                             homeless: [{ key: :renewal, value: 0 }],
                             referral: [{ key: :renewal, value: 0 }],
-                            underoccupation_benefitcap: [{ key: :renewal, value: 0 }] }
+                            underoccupation_benefitcap: [{ key: :renewal, value: 0 }],
+                            wchair: [{ key: :needstype, value: 1 }] }
 
     dependent_questions.each do |dependent, conditions|
       condition_key = conditions.first[:key]

spec/models/case_log_spec.rb

@@ -1842,6 +1842,24 @@ RSpec.describe CaseLog do
       end
     end
 
+    context "when it changes from a supported housing to not a supported housing" do
+      let(:location) { FactoryBot.create(:location, mobility_type: "A") }
+      let(:case_log) { FactoryBot.create(:case_log, location:) }
+
+      it "resets inferred wchair value" do
+        case_log.update!({ needstype: 2 })
+
+        record_from_db = ActiveRecord::Base.connection.execute("select wchair from case_logs where id=#{case_log.id}").to_a[0]
+        expect(record_from_db["wchair"]).to eq(2)
+        expect(case_log["wchair"]).to eq(2)
+
+        case_log.update!({ needstype: 1 })
+        record_from_db = ActiveRecord::Base.connection.execute("select needstype from case_logs where id=#{case_log.id}").to_a[0]
+        expect(record_from_db["wchair"]).to eq(nil)
+        expect(case_log["wchair"]).to eq(nil)
+      end
+    end
+
     context "when it is not a renewal" do
       let(:case_log) { FactoryBot.create(:case_log) }