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Versions: 33
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Contents
require 'helper'
require 'set'
class TestArrayUtils < Test::Unit::TestCase
def setup
@array = Faker::ArrayUtils.const_array("a".."c")
@elems = Set.new("a".."c")
end
it "provides a way of freezing the elements and itself" do
assert @array.respond_to?(:freeze_all)
@array.freeze_all
assert @array.frozen?
@array.each { |e| assert e.frozen? }
end
it "provides a way of getting a random element" do
set = Set.new
1000.times { set << @array.rand }
assert set == @elems
end
it "provides a way of getting n random elements" do
assert_equal @array.random_pick(3).sort, @array.sort
1.upto(3) do |n|
1000.times do
new_arr = @array.random_pick(n)
assert_equal n, new_arr.length
new_arr.each do |e|
assert @elems.include? e
end
end
end
end
it "provides a way of shuffling the array" do
assert_equal @array.shuffle.sort, @array.sort
different_arrangements = 0
1000.times do
new_arr = @array.shuffle
assert new_arr.to_set == @elems
different_arrangements += 1 if new_arr != @array
end
assert different_arrangements > 0
end
end
Version data entries
33 entries across 33 versions & 1 rubygems