require 'spec_helper'

describe '#zrangebyscore(key, start, stop [:with_scores => true] [:limit => [offset count]])' do
  before do
    @key = 'mock-redis-test:zrangebyscore'
    @redises.zadd(@key, 1, 'Washington')
    @redises.zadd(@key, 2, 'Adams')
    @redises.zadd(@key, 3, 'Jefferson')
    @redises.zadd(@key, 4, 'Madison')
  end

  context 'when the zset is empty' do
    before do
      @redises.del(@key)
    end

    it 'should return an empty array' do
      @redises.exists?(@key).should == false
      @redises.zrangebyscore(@key, 0, 4).should == []
    end
  end

  it 'returns the elements in order by score' do
    @redises.zrangebyscore(@key, 1, 2).should == %w[Washington Adams]
  end

  it 'returns the scores when :with_scores is specified' do
    @redises.zrangebyscore(@key, 1, 2, :with_scores => true).
      should == [['Washington', 1.0], ['Adams', 2.0]]
  end

  it 'returns the scores when :withscores is specified' do
    @redises.zrangebyscore(@key, 1, 2, :withscores => true).
      should == [['Washington', 1.0], ['Adams', 2.0]]
  end

  it 'honors the :limit => [offset count] argument' do
    @redises.zrangebyscore(@key, -100, 100, :limit => [1, 2]).
      should == %w[Adams Jefferson]
  end

  it "raises an error if :limit isn't a 2-tuple" do
    lambda do
      @redises.zrangebyscore(@key, -100, 100, :limit => [1, 2, 3])
    end.should raise_error(Redis::CommandError)

    lambda do
      @redises.zrangebyscore(@key, -100, 100, :limit => '1, 2')
    end.should raise_error(RedisMultiplexer::MismatchedResponse)
  end

  it 'treats scores like floats, not strings' do
    @redises.zadd(@key, '10', 'Tyler')
    @redises.zrangebyscore(@key, 1, 2).should == %w[Washington Adams]
  end

  it 'treats -inf as negative infinity' do
    @redises.zrangebyscore(@key, '-inf', 3).should ==
      %w[Washington Adams Jefferson]
  end

  it 'treats +inf as positive infinity' do
    @redises.zrangebyscore(@key, 3, '+inf').should == %w[Jefferson Madison]
  end

  it 'treats +inf as positive infinity' do
    @redises.zrangebyscore(@key, 3, '+inf').should == %w[Jefferson Madison]
  end

  it 'honors exclusive ranges on the left' do
    @redises.zrangebyscore(@key, '(3', 4).should == ['Madison']
  end

  it 'honors exclusive ranges on the right' do
    @redises.zrangebyscore(@key, '3', '(4').should == ['Jefferson']
  end

  it 'honors exclusive ranges on the left and the right simultaneously' do
    @redises.zrangebyscore(@key, '(1', '(4').should == %w[Adams Jefferson]
  end

  it_should_behave_like 'a zset-only command'
end