Contents

# encoding: utf-8
require 'spec_helper'

describe Quandl::Operation::Transform do
  subject { Quandl::Operation::Transform }

  describe '.perform' do
    it 'should handle empty data' do
      subject.perform([], :rdiff).should eq []
    end

    it 'should handle empty data' do
      subject.perform([nil], :cumul).should eq [nil]
    end

    it 'should rdiff_from' do
      data = [[1, 3, 5], [4, 5, 4], [5, 15, 20]]
      result = subject.perform(data, :rdiff_from)
      result.should eq [[1, 4, 3], [4, 2, 4], [5, 0, 0]]
    end
    it 'should cumul asc' do
      data = [[1000, 10], [1001, 20], [1002, 30]]
      result = subject.perform(data, :cumul)
      result.should eq [[1000, 10], [1001, 30], [1002, 60]]
    end
    it 'should cumul desc' do
      data = [[1002, 30], [1001, 20], [1000, 10]]
      result = subject.perform(data, :cumul)
      result.should eq [[1002, 60], [1001, 30], [1000, 10]]
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
quandl_operation-0.4.2	spec/lib/quandl/operation/transform_spec.rb
quandl_operation-0.4.2.rc1	spec/lib/quandl/operation/transform_spec.rb