write tests for new validations

spec/models/validations/shared_validations_spec.rb

@@ -114,6 +114,64 @@ RSpec.describe Validations::SharedValidations do
     end
   end
 
+  describe "validating level of accuracy or rounding for numeric questions" do
+    context "when validating a question with a step of 1" do
+      it "adds an error if input is a decimal" do
+        sales_log.income1 = 30_000.5
+        shared_validator.validate_numeric_step(sales_log)
+        expect(sales_log.errors[:income1]).to include I18n.t("validations.numeric.whole_number", field: "Buyer 1’s gross annual income")
+      end
+
+      it "does not add an error if input is an integer" do
+        sales_log.income1 = 30_000
+        shared_validator.validate_numeric_step(sales_log)
+        expect(sales_log.errors).to be_empty
+      end
+    end
+
+    context "when validating a question with a step of 10" do
+      it "adds an error if input is not a multiple of ten" do
+        sales_log.savings = 30_005
+        shared_validator.validate_numeric_step(sales_log)
+        expect(sales_log.errors[:savings]).to include I18n.t("validations.numeric.nearest_ten", field: "Buyer’s total savings (to nearest £10) before any deposit paid")
+      end
+
+      it "does not add an error if input is a multiple of ten" do
+        sales_log.savings = 30_000
+        shared_validator.validate_numeric_step(sales_log)
+        expect(sales_log.errors).to be_empty
+      end
+    end
+
+    context "when validating a question with a step of 0.01" do
+      it "adds an error if input has more than 2 decimal places" do
+        sales_log.deposit = 630.7418
+        shared_validator.validate_numeric_step(sales_log)
+        expect(sales_log.errors[:deposit]).to include I18n.t("validations.numeric.nearest_penny", field: "Cash deposit")
+      end
+
+      it "does not add an error if input has 2 or fewer decimal places" do
+        sales_log.deposit = 630.74
+        shared_validator.validate_numeric_step(sales_log)
+        expect(sales_log.errors).to be_empty
+      end
+    end
+  end
+
+  describe "validating the format of inputs in numeric questions" do
+    it "adds an error if number is input in exponent notation" do
+      sales_log.age2 = "1e1"
+      shared_validator.validate_numeric_normal_format(sales_log)
+      expect(sales_log.errors[:age2]).to include I18n.t("validations.numeric.normal_format")
+    end
+
+    it "does not add an error if number is input in standard notation" do
+      sales_log.age2 = "11"
+      shared_validator.validate_numeric_normal_format(sales_log)
+      expect(sales_log.errors).to be_empty
+    end
+  end
+
   describe "radio options validations" do
     it "allows only possible values" do
       lettings_log.needstype = 1