require 'spec_helper'

describe Hashie::Extensions::DeepFind do
  subject { Class.new(Hash) { include Hashie::Extensions::DeepFind } }
  let(:hash) do
    {
      library: {
        books: [
          { title: 'Call of the Wild' },
          { title: 'Moby Dick' }
        ],
        shelves: nil,
        location: {
          address: '123 Library St.',
          title: 'Main Library'
        }
      }
    }
  end
  let(:instance) { subject.new.update(hash) }

  describe '#deep_find' do
    it 'detects a value from a nested hash' do
      expect(instance.deep_find(:address)).to eq('123 Library St.')
    end

    it 'detects a value from a nested array' do
      expect(instance.deep_find(:title)).to eq('Call of the Wild')
    end

    it 'returns nil if it does not find a match' do
      expect(instance.deep_find(:wahoo)).to be_nil
    end
  end

  describe '#deep_find_all' do
    it 'detects all values from a nested hash' do
      expect(instance.deep_find_all(:title))
        .to eq(['Call of the Wild', 'Moby Dick', 'Main Library'])
    end

    it 'returns nil if it does not find any matches' do
      expect(instance.deep_find_all(:wahoo)).to be_nil
    end

    context 'when match value is hash itself' do
      let(:hash) do
        {
          title: {
            type: :string
          },
          library: {
            books: [
              { title: 'Call of the Wild' },
              { title: 'Moby Dick' }
            ],
            shelves: nil,
            location: {
              address: '123 Library St.',
              title: 'Main Library'
            }
          }
        }
      end

      it 'detects all values from a nested hash' do
        expect(instance.deep_find_all(:title))
          .to eq([{ type: :string }, 'Call of the Wild', 'Moby Dick', 'Main Library'])
      end
    end
  end

  context 'on a Hash including Hashie::Extensions::IndifferentAccess' do
    let(:klass) { Class.new(Hash) { include Hashie::Extensions::IndifferentAccess } }
    subject(:instance) { klass[hash.dup].extend(Hashie::Extensions::DeepFind) }

    describe '#deep_find' do
      it 'indifferently detects a value from a nested hash' do
        expect(instance.deep_find(:address)).to eq('123 Library St.')
        expect(instance.deep_find('address')).to eq('123 Library St.')
      end

      it 'indifferently detects a value from a nested array' do
        expect(instance.deep_find(:title)).to eq('Call of the Wild')
        expect(instance.deep_find('title')).to eq('Call of the Wild')
      end

      it 'indifferently returns nil if it does not find a match' do
        expect(instance.deep_find(:wahoo)).to be_nil
        expect(instance.deep_find('wahoo')).to be_nil
      end
    end

    describe '#deep_find_all' do
      it 'indifferently detects all values from a nested hash' do
        expect(instance.deep_find_all(:title))
          .to eq(['Call of the Wild', 'Moby Dick', 'Main Library'])
        expect(instance.deep_find_all('title'))
          .to eq(['Call of the Wild', 'Moby Dick', 'Main Library'])
      end

      it 'indifferently returns nil if it does not find any matches' do
        expect(instance.deep_find_all(:wahoo)).to be_nil
        expect(instance.deep_find_all('wahoo')).to be_nil
      end
    end
  end
end