LG-10314: Add test coverage for BackupCodeVerificationForm

spec/forms/backup_code_verification_form_spec.rb

@@ -0,0 +1,57 @@
+require 'rails_helper'
+
+RSpec.describe BackupCodeVerificationForm do
+  subject(:result) { described_class.new(user).submit(params).to_h }
+
+  let(:user) { create(:user) }
+  let(:backup_codes) { BackupCodeGenerator.new(user).create }
+  let(:backup_code_config) do
+    BackupCodeConfiguration.find_with_code(code: code, user_id: user.id)
+  end
+
+  describe '#submit' do
+    let(:params) do
+      {
+        backup_code: code,
+      }
+    end
+
+    context 'with a valid backup code' do
+      let(:code) { backup_codes.first }
+      let(:expected_response) do
+        {
+          success: true,
+          errors: {},
+          multi_factor_auth_method: 'backup_code',
+          multi_factor_auth_method_created_at: backup_code_config.created_at,
+        }
+      end
+
+      it 'returns succcess' do
+        expect(result).to eq(expected_response)
+      end
+
+      it 'marks code as used' do
+        expect { subject }.to change {
+                                backup_code_config.reload.used_at
+                              }.from(nil).to kind_of(Time)
+      end
+    end
+
+    context 'with an invalid backup code' do
+      let(:code) { 'invalid' }
+      let(:expected_response) do
+        {
+          success: false,
+          errors: {},
+          multi_factor_auth_method: 'backup_code',
+          multi_factor_auth_method_created_at: nil,
+        }
+      end
+
+      it 'returns failure' do
+        expect(result).to eq(expected_response)
+      end
+    end
+  end
+end