Add age verification on sign-up (#34150)

spec/validators/date_of_birth_validator_spec.rb

@@ -0,0 +1,51 @@
+# frozen_string_literal: true
+
+require 'rails_helper'
+
+RSpec.describe DateOfBirthValidator do
+  let(:record_class) do
+    Class.new do
+      include ActiveModel::Validations
+
+      attr_accessor :date_of_birth
+
+      validates :date_of_birth, date_of_birth: true
+    end
+  end
+
+  let(:record) { record_class.new }
+
+  before do
+    Setting.min_age = 16
+  end
+
+  describe '#validate_each' do
+    context 'with an invalid date' do
+      it 'adds errors' do
+        record.date_of_birth = '76.830.10'
+
+        expect(record).to_not be_valid
+        expect(record.errors.first.attribute).to eq(:date_of_birth)
+        expect(record.errors.first.type).to eq(:invalid)
+      end
+    end
+
+    context 'with a date below age limit' do
+      it 'adds errors' do
+        record.date_of_birth = 13.years.ago.strftime('%d.%m.%Y')
+
+        expect(record).to_not be_valid
+        expect(record.errors.first.attribute).to eq(:date_of_birth)
+        expect(record.errors.first.type).to eq(:below_limit)
+      end
+    end
+
+    context 'with a date above age limit' do
+      it 'does not add errors' do
+        record.date_of_birth = 16.years.ago.strftime('%d.%m.%Y')
+
+        expect(record).to be_valid
+      end
+    end
+  end
+end