require 'spec_helper'

describe 'Cistern::Hash' do
  describe '#slice' do
    let(:input) do
      { one: 'one', two: 'two', three: 'three' }
    end

    it 'returns a new hash with only the specified keys' do
      expect(Cistern::Hash.slice(input, :one, :two)).to eq(one: 'one', two: 'two')
    end

    it "skips keys that aren't in the original hash" do
      expect(Cistern::Hash.slice(input, :four)).to eq({})
    end
  end

  describe '#except' do
    let(:input) do
      { one: 'one', two: 'two', three: 'three' }
    end

    it 'returns a new hash without the specified keys' do
      expect(Cistern::Hash.except(input, :one, :two)).to eq(three: 'three')
    end

    it "skips keys that aren't in the original hash" do
      expect(Cistern::Hash.except(input, :four)).to eq(input)
    end
  end

  describe '#stringify_keys' do
    let(:input) do
      { one: 'one', two: 'two' }
    end

    it 'returns a new hash with stringed keys' do
      expect(Cistern::Hash.stringify_keys(input)).to eq('one' => 'one', 'two' => 'two')
    end

    context 'with nested hashes or arrays' do
      let(:input) do
        { hash: { one: 'one' }, array: [{ two: 'two' }] }
      end

      it 'stringifies all of the keys' do
        expect(Cistern::Hash.stringify_keys(input)).to eq('hash' => { 'one' => 'one' }, 'array' => [{ 'two' => 'two' }])
      end
    end
  end
end

shared_examples_for 'hash_support' do
  it { should respond_to(:hash_except) }
  it { should respond_to(:hash_except!) }
  it { should respond_to(:hash_slice) }
  it { should respond_to(:hash_stringify_keys) }
end

describe Cistern::Model do
  subject { Class.new(Sample::Model).new }

  include_examples 'hash_support'
end

describe Cistern::Collection do
  subject { Class.new(Sample::Collection).new }

  include_examples 'hash_support'
end

describe Cistern::Singular do
  subject { Class.new(Sample::Singular) do
    def reload
      attributes
    end
  end.new({}) }

  include_examples 'hash_support'
end

describe Cistern::Request do
  subject { Class.new(Sample::Request).new({}) }

  include_examples 'hash_support'
end