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* array.c (rb_ary_shuffle_bang, rb_ary_sample): add optional

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argument random.  [ruby-dev:41923] [EXPERIMENTAL]

* random.c (rb_random_{int32,real,bytes}): fallback to normal
  method invocation.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29083 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
nobu 2010-08-23 22:07:39 +00:00
parent 89339af9c1
commit 2f6c0e3be3
5 changed files with 88 additions and 18 deletions
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17
test/ruby/test_array.rb
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@ -1891,6 +1891,12 @@ class TestArray < Test::Unit::TestCase
100.times do
assert_equal([0, 1, 2], [2, 1, 0].shuffle.sort)
end
gen = Random.new(0)
srand(0)
100.times do
assert_equal([0, 1, 2].shuffle, [0, 1, 2].shuffle(random: gen))
end
end
def test_sample
@ -1907,7 +1913,7 @@ class TestArray < Test::Unit::TestCase
(0..20).each do |n|
100.times do
b = a.sample(n)
assert_equal([n, 18].min, b.uniq.size)
assert_equal([n, 18].min, b.size)
assert_equal(a, (a | b).sort)
assert_equal(b.sort, (a & b).sort)
end
@ -1920,6 +1926,15 @@ class TestArray < Test::Unit::TestCase
end
assert_raise(ArgumentError, '[ruby-core:23374]') {[1, 2].sample(-1)}
gen = Random.new(0)
srand(0)
a = (1..18).to_a
(0..20).each do |n|
100.times do |i|
assert_equal(a.sample(n), a.sample(n, random: gen), "#{i}/#{n}")
end
end
end
def test_cycle