require 'spec_helper'

describe Itiel::Transform::ConstantColumn do
  before :each do
    @input = [
        { "id" => "1" },
        { "id" => "2" }
    ]

    @expected_output = [
        { "id" => "1", "append" => "value" },
        { "id" => "2", "append" => "value" }
    ]

    @transformation = Itiel::Transform::ConstantColumn.new("append" => "value")
  end

  it "appends a field with a constant value to the stream" do
    expect(@transformation.transform!(@input)).to eq @expected_output
  end
end