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