71 lines
2.3 KiB
Ruby
71 lines
2.3 KiB
Ruby
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# frozen_string_literal: true
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require 'fast_spec_helper'
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require 'active_support/concern'
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describe Gitlab::Utils::LazyAttributes do
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subject(:klass) do
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Class.new do
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include Gitlab::Utils::LazyAttributes
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lazy_attr_reader :number, type: Numeric
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lazy_attr_reader :reader_1, :reader_2
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lazy_attr_accessor :incorrect_type, :string_attribute, :accessor_2, type: String
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def initialize
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@number = -> { 1 }
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@reader_1, @reader_2 = 'reader_1', -> { 'reader_2' }
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@incorrect_type, @accessor_2 = -> { :incorrect_type }, -> { 'accessor_2' }
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end
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end
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end
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context 'class methods' do
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it { is_expected.to respond_to(:lazy_attr_reader, :lazy_attr_accessor) }
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it { is_expected.not_to respond_to(:define_lazy_reader, :define_lazy_writer) }
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end
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context 'instance methods' do
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subject(:instance) { klass.new }
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it do
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is_expected.to respond_to(:number, :reader_1, :reader_2, :incorrect_type,
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:incorrect_type=, :accessor_2, :accessor_2=,
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:string_attribute, :string_attribute=)
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end
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context 'reading attributes' do
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it 'returns the correct values for procs', :aggregate_failures do
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expect(instance.number).to eq(1)
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expect(instance.reader_2).to eq('reader_2')
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expect(instance.accessor_2).to eq('accessor_2')
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end
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it 'does not return the value if the type did not match what was specified' do
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expect(instance.incorrect_type).to be_nil
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end
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it 'only calls the block once even if it returned `nil`', :aggregate_failures do
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expect(instance.instance_variable_get('@number')).to receive(:call).once.and_call_original
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expect(instance.instance_variable_get('@accessor_2')).to receive(:call).once.and_call_original
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expect(instance.instance_variable_get('@incorrect_type')).to receive(:call).once.and_call_original
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2.times do
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instance.number
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instance.incorrect_type
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instance.accessor_2
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end
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end
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end
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context 'writing attributes' do
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it 'sets the correct values', :aggregate_failures do
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instance.string_attribute = -> { 'updated 1' }
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instance.accessor_2 = nil
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expect(instance.string_attribute).to eq('updated 1')
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expect(instance.accessor_2).to be_nil
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end
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end
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end
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end
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