Contents

# frozen_string_literal: true

RSpec.describe MetalArchives::LRUCache do
  let(:cache) { MetalArchives::LRUCache.new 3 }

  it 'stores and retrieves objects' do
    cache[:key] = 'MyString'

    expect(cache[:key]).to eq 'MyString'
  end

  it 'clears cache' do
    cache[:key] = 'MyString'
    cache.clear

    expect(cache[:key]).to be_nil
  end

  it 'peeks' do
    expect(cache).not_to include :key

    cache[:key] = 'MyString'

    expect(cache).to include :key
  end

  it 'deletes' do
    cache[:key] = 'MyString'

    expect(cache).to include :key

    cache.delete :key

    expect(cache).not_to include :key
  end

  it 'implements LRU caching' do
    cache[:a] = 'one'
    cache[:b] = 'two'
    cache[:c] = 'three'

    expect(cache.instance_variable_get '@size').to eq 3

    cache[:d] = 'four'

    expect(cache.instance_variable_get '@size').to eq 3

    expect(cache[:b]).to eq 'two'
    expect(cache[:c]).to eq 'three'
    expect(cache[:d]).to eq 'four'
    expect(cache[:a]).to be_nil
  end
end

Version data entries

7 entries across 7 versions & 1 rubygems

Version	Path
metal_archives-2.2.0	spec/utils/lru_cache_spec.rb
metal_archives-2.1.1	spec/utils/lru_cache_spec.rb
metal_archives-2.1.0	spec/utils/lru_cache_spec.rb
metal_archives-2.0.2	spec/utils/lru_cache_spec.rb
metal_archives-2.0.1	spec/utils/lru_cache_spec.rb
metal_archives-2.0.0	spec/utils/lru_cache_spec.rb
metal_archives-1.0.0	spec/utils/lru_cache_spec.rb