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* array.c (rb_ary_resize): new utility function. [ruby-dev:42912]

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30465 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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nobu 2011-01-05 20:10:59 +00:00
parent 697a45b196
commit c8aaf31fdd
5 changed files with 90 additions and 0 deletions
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29
test/-ext-/array/test_resize.rb Normal file
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require 'test/unit'
require '-test-/array/resize'
class TestArray < Test::Unit::TestCase
class TestResize < Test::Unit::TestCase
def test_expand
feature = '[ruby-dev:42912]'
ary = [*1..10]
ary.resize(10)
assert_equal(10, ary.size, feature)
assert_equal([*1..10], ary, feature)
ary.resize(100)
assert_equal(100, ary.size, feature)
assert_equal([*1..10]+[nil]*90, ary, feature)
ary.resize(20)
assert_equal(20, ary.size, feature)
assert_equal([*1..10]+[nil]*10, ary, feature)
ary.resize(2)
assert_equal(2, ary.size, feature)
assert_equal([1,2], ary, feature)
ary.resize(3)
assert_equal(3, ary.size, feature)
assert_equal([1,2,nil], ary, feature)
ary.resize(10)
assert_equal(10, ary.size, feature)
assert_equal([1,2]+[nil]*8, ary, feature)
end
end
end