require 'spec_helper'

describe Immutable::Vector do
  describe '#join' do
    context 'with a separator' do
      [
        [[], ''],
        [['A'], 'A'],
        [[DeterministicHash.new('A', 1), DeterministicHash.new('B', 2), DeterministicHash.new('C', 3)], 'A|B|C']
      ].each do |values, expected|
        describe "on #{values.inspect}" do
          let(:vector) { V[*values] }

          it 'preserves the original' do
            vector.join('|')
            vector.should eql(V[*values])
          end

          it "returns #{expected.inspect}" do
            vector.join('|').should == expected
          end
        end
      end
    end

    context 'without a separator' do
      [
        [[], ''],
        [['A'], 'A'],
        [[DeterministicHash.new('A', 1), DeterministicHash.new('B', 2), DeterministicHash.new('C', 3)], 'ABC']
      ].each do |values, expected|
        describe "on #{values.inspect}" do
          let(:vector) { V[*values] }

          it 'preserves the original' do
            vector.join
            vector.should eql(V[*values])
          end

          it "returns #{expected.inspect}" do
            vector.join.should == expected
          end
        end
      end
    end

    context 'without a separator (with global default separator set)' do
      before { $, = '**' }
      after  { $, = nil }

      describe 'on ["A", "B", "C"]' do
        it 'returns "A**B**C"' do
          V['A', 'B', 'C'].join.should == 'A**B**C'
        end
      end
    end
  end
end