Contents

covers 'facets/enumerable/group_by'

test_case Enumerable do

  method :group_by do

    test "for array" do
      a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
      e = {0=>[0, 2, 4, 6, 8], 1=>[1, 3, 5, 7, 9]}
      r = a.group_by{ |x| x % 2 }  #.each{|k, v| v.sort!})
      r.assert == e
    end

    test "for hash" do
      h = {0=>0, 1=>1, 2=>2, 3=>3, 4=>4, 5=>5, 6=>6, 7=>7, 8=>8, 9=>9}
      e = {0=>[[0, 0], [2, 2], [4, 4], [6, 6], [8, 8]], 1=>[[1, 1], [3, 3], [5, 5], [7, 7], [9, 9]]}
      r = h.group_by{|k, v| v%2}.each{|k, v| v.sort!}
      r.assert == e
    end

    test "for range" do
      r = (1..5).group_by{ |n| n % 3 }
      e = { 0 => [3], 1 => [1, 4], 2 => [2,5] }
      r.assert == e
    end

    test "for array of string" do
      r = ["I had", 1, "dollar and", 50, "cents"].group_by{ |e| e.class }
      e = { String => ["I had","dollar and","cents"], Fixnum => [1,50] }
      r.assert == e
    end

  end

end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
facets-3.0.0	test/core/enumerable/test_group_by.rb
facets-2.9.3	test/core/enumerable/test_group_by.rb
facets-2.9.2	test/core/enumerable/test_group_by.rb