Add some convenience methods to make validations more readable

app/models/case_log.rb

@@ -73,23 +73,14 @@ class CaseLog < ApplicationRecord
     status == "in_progress"
   end
 
-  def postcode_known?
-    postcode_known == 1
-  end
-
-  def previous_postcode_known?
-    previous_postcode_known == 1
-  end
-
   def weekly_net_income
     return unless earnings && incfreq
 
-    case incfreq
-    when 0
+    if net_income_is_weekly?
       earnings
-    when 1
+    elsif net_income_is_monthly?
       ((earnings * 12) / 52.0).round(0)
-    when 2
+    elsif net_income_is_yearly?
       (earnings / 12.0).round(0)
     end
   end
@@ -104,6 +95,118 @@ class CaseLog < ApplicationRecord
     first_time_property_let_as_social_housing == 1
   end
 
+  def net_income_refused?
+    net_income_known == 2
+  end
+
+  def net_income_is_weekly?
+    !!(incfreq && incfreq.zero?)
+  end
+
+  def net_income_is_monthly?
+    incfreq == 1
+  end
+
+  def net_income_is_yearly?
+    incfreq == 2
+  end
+
+  def given_reasonable_preference?
+    !!(reasonpref && reasonpref.zero?)
+  end
+
+  def is_renewal?
+    renewal == 1
+  end
+
+  def is_general_needs?
+    needstype == 1
+  end
+
+  def has_hbrentshortfall?
+    !!(hbrentshortfall && hbrentshortfall.zero?)
+  end
+
+  def postcode_known?
+    postcode_known == 1
+  end
+
+  def previous_postcode_known?
+    previous_postcode_known == 1
+  end
+
+  def la_known?
+    la_known == 1
+  end
+
+  def previous_la_known?
+    previous_la_known == 1
+  end
+
+  def is_secure_tenancy?
+    tenancy == 3
+  end
+
+  def is_assured_shorthold_tenancy?
+    tenancy == 1
+  end
+
+  def is_internal_transfer?
+    !!(referral && referral.zero?)
+  end
+
+  def is_relet_to_temp_tenant?
+    rsnvac == 2
+  end
+
+  def is_bedsit?
+    unittype_gn == 1
+  end
+
+  def is_shared_housing?
+    [4, 5, 6].include?(unittype_gn)
+  end
+
+  def has_first_let_vacancy_reason?
+    [11, 12, 13].include?(rsnvac)
+  end
+
+  def previous_tenancy_was_temporary?
+    ![4, 5, 16, 21, 22].include?(prevten)
+  end
+
+  def armed_forces_regular?
+    !!(armedforces && armedforces.zero?)
+  end
+
+  def armed_forces_no?
+    armedforces == 3
+  end
+
+  def armed_forces_refused?
+    armedforces == 4
+  end
+
+  def has_pregnancy?
+    !!(preg_occ && preg_occ.zero?)
+  end
+
+  def pregnancy_refused?
+    preg_occ == 2
+  end
+
+  def is_assessed_homeless?
+    !!(homeless && homeless.zero?)
+  end
+
+  def is_other_homeless?
+    homeless == 1
+  end
+
+  def is_not_homeless?
+    homeless == 2
+  end
+
 private
 
   PIO = Postcodes::IO.new
@@ -169,7 +272,7 @@ private
       self.month = startdate.month
       self.year = startdate.year
     end
-    self.incref = 1 if net_income_known == 2
+    self.incref = 1 if net_income_refused?
     self.hhmemb = other_hhmemb + 1 if other_hhmemb.present?
     self.renttype = RENT_TYPE_MAPPING[rent_type]
     self.lettype = get_lettype
@@ -186,13 +289,13 @@ private
     self.has_benefits = get_has_benefits
     self.nocharge = household_charge&.zero? ? 1 : 0
     self.underoccupation_benefitcap = 3 if renewal == 1 && year == 2021
-    if renewal == 1
+    if is_renewal?
       self.homeless = 2
       self.referral = 0
       self.layear = 1
-      self.reasonpref = nil if reasonpref&.zero?
+      self.reasonpref = nil if given_reasonable_preference?
     end
-    if needstype == 1
+    if is_general_needs?
       self.prevten = 2 if managing_organisation.provider_type == "PRP"
       self.prevten = 0 if managing_organisation.provider_type == "LA"
     end

app/models/validations/financial_validations.rb

@@ -50,12 +50,11 @@ module Validations::FinancialValidations
   end
 
   def validate_tshortfall(record)
-    is_yes = record.hbrentshortfall&.zero?
     hb_donotknow = record.hb == 5
     hb_none = record.hb == 4
     hb_uc_no_hb = record.hb == 3
 
-    if is_yes && (hb_donotknow || hb_none || hb_uc_no_hb)
+    if record.has_hbrentshortfall? && (hb_donotknow || hb_none || hb_uc_no_hb)
       record.errors.add :tshortfall, I18n.t("validations.financial.hbrentshortfall.outstanding_no_benefits")
     end
   end

app/models/validations/household_validations.rb

@@ -4,7 +4,7 @@ module Validations::HouseholdValidations
   # Validations methods need to be called 'validate_<page_name>' to run on model save
   # or 'validate_' to run on submit as well
   def validate_reasonable_preference(record)
-    if record.homeless == 2 && record.reasonpref && record.reasonpref.zero?
+    if record.is_not_homeless? && record.given_reasonable_preference?
       record.errors.add :reasonpref, I18n.t("validations.household.reasonpref.not_homeless")
       record.errors.add :homeless, I18n.t("validations.household.homeless.reasonpref.not_homeless")
     elsif record.reasonpref == 1
@@ -23,16 +23,16 @@ module Validations::HouseholdValidations
   end
 
   def validate_armed_forces(record)
-    if (record.armedforces == 3 || record.armedforces == 4) && record.reservist.present?
+    if (record.armed_forces_no? || record.armed_forces_refused?) && record.reservist.present?
       record.errors.add :reservist, I18n.t("validations.household.reservist.injury_not_required")
     end
-    if record.armedforces != 0 && record.leftreg.present?
+    if !record.armed_forces_regular? && record.leftreg.present?
       record.errors.add :leftreg, I18n.t("validations.household.leftreg.question_not_required")
     end
   end
 
   def validate_pregnancy(record)
-    if ((record.preg_occ && record.preg_occ.zero?) || record.preg_occ == 2) && !women_of_child_bearing_age_in_household(record)
+    if (record.has_pregnancy? || record.pregnancy_refused?) && !women_of_child_bearing_age_in_household(record)
       record.errors.add :preg_occ, I18n.t("validations.household.preg_occ.no_female")
     end
   end
@@ -67,30 +67,30 @@ module Validations::HouseholdValidations
   end
 
   def validate_previous_housing_situation(record)
-    if record.rsnvac == 2 && NON_TEMP_ACCOMMODATION.include?(record.prevten)
+    if record.is_relet_to_temp_tenant? && !record.previous_tenancy_was_temporary?
       record.errors.add :prevten, I18n.t("validations.household.prevten.non_temp_accommodation")
     end
   end
 
   def validate_referral(record)
-    if record.referral.present? && record.tenancy.present? && record.referral != 0 && record.tenancy == 3
+    if record.referral.present? && record.tenancy.present? && !record.is_internal_transfer? && record.is_secure_tenancy?
       record.errors.add :referral, I18n.t("validations.household.referral.secure_tenancy")
       record.errors.add :tenancy, I18n.t("validations.tenancy.cannot_be_internal_transfer")
     end
 
-    if record.referral && record.referral.zero? && record.homeless && record.homeless.zero?
+    if record.is_internal_transfer? && record.is_assessed_homeless?
       record.errors.add :referral, I18n.t("validations.household.referral.assessed_homeless")
       record.errors.add :homeless, I18n.t("validations.household.homeless.assessed.internal_transfer")
     end
 
-    if record.referral && record.referral.zero? && record.homeless == 1
+    if record.is_internal_transfer? && record.is_other_homeless?
       record.errors.add :referral, I18n.t("validations.household.referral.other_homeless")
       record.errors.add :homeless, I18n.t("validations.household.homeless.other.internal_transfer")
     end
   end
 
   def validate_prevloc(record)
-    if record.previous_la_known == 1 && record.prevloc.blank?
+    if record.previous_la_known? && record.prevloc.blank?
       record.errors.add :prevloc, I18n.t("validations.household.previous_la_known")
     end
   end

app/models/validations/local_authority_validations.rb

@@ -3,7 +3,7 @@ module Validations::LocalAuthorityValidations
 
   def validate_previous_accommodation_postcode(record)
     postcode = record.previous_postcode
-    if record.previous_postcode_known == 1 && (postcode.blank? || !postcode.match(POSTCODE_REGEXP))
+    if record.previous_postcode_known? && (postcode.blank? || !postcode.match(POSTCODE_REGEXP))
       error_message = I18n.t("validations.postcode")
       record.errors.add :previous_postcode, error_message
     end

app/models/validations/property_validations.rb

@@ -59,28 +59,26 @@ module Validations::PropertyValidations
       record.errors.add :la, I18n.t("validations.property.la.london_rent")
     end
 
-    if record.la_known == 1 && record.la.blank?
+    if record.la_known? && record.la.blank?
       record.errors.add :la, I18n.t("validations.property.la.la_known")
     end
   end
 
-  FIRST_LET_VACANCY_REASONS = [11, 12, 13].freeze
-  NON_TEMP_ACCOMMODATION = [4, 5, 16, 21, 22].freeze
   REFERRAL_INVALID_TMP = [2, 3, 5, 6, 7, 8].freeze
   def validate_rsnvac(record)
-    if !record.first_time_property_let_as_social_housing? && FIRST_LET_VACANCY_REASONS.include?(record.rsnvac)
+    if !record.first_time_property_let_as_social_housing? && record.has_first_let_vacancy_reason?
       record.errors.add :rsnvac, I18n.t("validations.property.rsnvac.first_let_not_social")
     end
 
-    if record.first_time_property_let_as_social_housing? && record.rsnvac.present? && !FIRST_LET_VACANCY_REASONS.include?(record.rsnvac)
+    if record.first_time_property_let_as_social_housing? && record.rsnvac.present? && !record.has_first_let_vacancy_reason?
       record.errors.add :rsnvac, I18n.t("validations.property.rsnvac.first_let_social")
     end
 
-    if record.rsnvac == 2 && NON_TEMP_ACCOMMODATION.include?(record.prevten)
+    if record.is_relet_to_temp_tenant? && !record.previous_tenancy_was_temporary?
       record.errors.add :rsnvac, I18n.t("validations.property.rsnvac.non_temp_accommodation")
     end
 
-    if record.rsnvac == 2 && REFERRAL_INVALID_TMP.include?(record.referral)
+    if record.is_relet_to_temp_tenant? && REFERRAL_INVALID_TMP.include?(record.referral)
       record.errors.add :rsnvac, I18n.t("validations.property.rsnvac.referral_invalid")
       record.errors.add :referral, I18n.t("validations.household.referral.rsnvac_non_temp")
     end
@@ -94,29 +92,28 @@ module Validations::PropertyValidations
 
   def validate_property_postcode(record)
     postcode = record.property_postcode
-    if record.postcode_known == 1 && (postcode.blank? || !postcode.match(POSTCODE_REGEXP))
+    if record.postcode_known? && (postcode.blank? || !postcode.match(POSTCODE_REGEXP))
       error_message = I18n.t("validations.postcode")
       record.errors.add :property_postcode, error_message
     end
   end
 
-  SHARED_HOUSING = [4, 5, 6].freeze
   def validate_shared_housing_rooms(record)
     if record.beds.present? && record.beds.negative?
       record.errors.add :beds, I18n.t("validations.property.beds.negative")
     end
 
     unless record.unittype_gn.nil?
-      if record.unittype_gn == 1 && record.beds != 1 && record.beds.present?
+      if record.is_bedsit? && record.beds != 1 && record.beds.present?
         record.errors.add :unittype_gn, I18n.t("validations.property.unittype_gn.one_bedroom_bedsit")
         record.errors.add :beds, I18n.t("validations.property.unittype_gn.one_bedroom_bedsit")
       end
 
-      if record.other_hhmemb&.zero? && SHARED_HOUSING.include?(record.unittype_gn) &&
+      if record.other_hhmemb&.zero? && record.is_shared_housing? &&
           !record.beds.to_i.between?(1, 3) && record.beds.present?
         record.errors.add :unittype_gn, I18n.t("validations.property.unittype_gn.one_three_bedroom_single_tenant_shared")
         record.errors.add :beds, I18n.t("validations.property.unittype_gn.one_three_bedroom_single_tenant_shared")
-      elsif SHARED_HOUSING.include?(record.unittype_gn) && record.beds.present? && !record.beds.to_i.between?(1, 7)
+      elsif record.is_shared_housing? && record.beds.present? && !record.beds.to_i.between?(1, 7)
         record.errors.add :unittype_gn, I18n.t("validations.property.unittype_gn.one_seven_bedroom_shared")
         record.errors.add :beds, I18n.t("validations.property.unittype_gn.one_seven_bedroom_shared")
       end

app/models/validations/tenancy_validations.rb

@@ -6,12 +6,19 @@ module Validations::TenancyValidations
   def validate_fixed_term_tenancy(record)
     is_present = record.tenancylength.present?
     is_in_range = record.tenancylength.to_i.between?(2, 99)
-    is_secure = record.tenancy == 3
-    is_ast = record.tenancy == 1
     conditions = [
-      { condition: !(is_secure || is_ast) && is_present, error: I18n.t("validations.tenancy.length.fixed_term_not_required") },
-      { condition: (is_ast && !is_in_range) && is_present, error: I18n.t("validations.tenancy.length.shorthold") },
-      { condition: is_secure && (!is_in_range && is_present), error: I18n.t("validations.tenancy.length.secure") },
+      {
+        condition: !(record.is_secure_tenancy? || record.is_assured_shorthold_tenancy?) && is_present,
+        error: I18n.t("validations.tenancy.length.fixed_term_not_required"),
+      },
+      {
+        condition: (record.is_assured_shorthold_tenancy? && !is_in_range) && is_present,
+        error: I18n.t("validations.tenancy.length.shorthold"),
+      },
+      {
+        condition: record.is_secure_tenancy? && (!is_in_range && is_present),
+        error: I18n.t("validations.tenancy.length.secure"),
+      },
     ]
 
     conditions.each do |condition|
@@ -27,7 +34,7 @@ module Validations::TenancyValidations
   end
 
   def validate_tenancy_type(record)
-    if record.tenancy.present? && record.tenancy != 3 && record.referral&.zero?
+    if record.tenancy.present? && !record.is_secure_tenancy? && record.is_internal_transfer?
       record.errors.add :tenancy, I18n.t("validations.tenancy.internal_transfer")
       record.errors.add :referral, I18n.t("validations.household.referral.cannot_be_secure_tenancy")
     end

spec/models/validations/property_validations_spec.rb

@@ -257,7 +257,7 @@ RSpec.describe Validations::PropertyValidations do
     end
 
     context "when the property has been let before" do
-      let(:non_temporary_previous_tenancies) { described_class::NON_TEMP_ACCOMMODATION }
+      let(:non_temporary_previous_tenancies) { [4, 5, 16, 21, 22] }
 
       context "when the previous tenancy was not temporary" do
         let(:referral_sources) { described_class::REFERRAL_INVALID_TMP }