Contents

require "minitest/autorun"
require "shenanigans/array/reductions"

class ArrayReductions < Minitest::Test
  TEST_ARRAY = [*1..4]

  def test_reductions_without_params_or_block
    assert_raises(ArgumentError) { TEST_ARRAY.reductions }
  end

  def test_reductions_operator_only
    assert TEST_ARRAY.reductions(:+) == [1, 3, 6, 10]
  end

  def test_reductions_initial_only
    assert TEST_ARRAY.reductions(50) { |acc, b| acc + b } == [50, 51, 53, 56, 60]
  end

  def test_reductions_inital_and_operator
    assert TEST_ARRAY.reductions(50, :+) == [50, 51, 53, 56, 60]
  end

  def test_reductions_without_params
    assert TEST_ARRAY.reductions { |acc, b| acc + b } == [1, 3, 6, 10]
    assert %w[a b c].reductions { |s1, s2| s1 + s2 } == %w[a ab abc]
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
shenanigans-1.0.15	test/array/reductions_test.rb
shenanigans-1.0.14	test/array/reductions_test.rb