gitlab-org--gitlab-foss/spec/lib/gitlab/lazy_spec.rb

39 lines
941 B
Ruby

# frozen_string_literal: true
require 'spec_helper'
RSpec.describe Gitlab::Lazy do
let(:dummy) { double(:dummy) }
context 'when not calling any methods' do
it 'does not call the supplied block' do
expect(dummy).not_to receive(:foo)
described_class.new { dummy.foo }
end
end
context 'when calling a method on the object' do
it 'lazy loads the value returned by the block' do
expect(dummy).to receive(:foo).and_return('foo')
lazy = described_class.new { dummy.foo }
expect(lazy.to_s).to eq('foo')
end
end
describe '#respond_to?' do
it 'returns true for a method defined on the wrapped object' do
lazy = described_class.new { 'foo' }
expect(lazy).to respond_to(:downcase)
end
it 'returns false for a method not defined on the wrapped object' do
lazy = described_class.new { 'foo' }
expect(lazy).not_to respond_to(:quack)
end
end
end