require 'rails_helper' describe EmailSettingValidator do describe '#valid_value?' do subject(:validator) { described_class.new } it "returns true for blank values" do expect(validator.valid_value?('')).to eq(true) expect(validator.valid_value?(nil)).to eq(true) end it "returns true if value is a valid email address" do expect(validator.valid_value?('vader@example.com')).to eq(true) end it "returns false if value is not a valid email address" do expect(validator.valid_value?('my house')).to eq(false) end end end