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* string.c (rb_str_byteslice): Add String#byteslice. [ruby-core:35376]

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30991 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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naruse 2011-03-01 01:35:17 +00:00
parent af4d75f958
commit b8b48f9d58
4 changed files with 137 additions and 0 deletions
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29
test/ruby/test_string.rb
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@ -1944,4 +1944,33 @@ class TestString < Test::Unit::TestCase
assert_equal(S("hello world"), a)
assert_equal(S("hello "), b)
end
def b(str)
str.force_encoding(Encoding::ASCII_8BIT)
end
def test_byteslice
assert_equal(b("h"), "hello".byteslice(0))
assert_equal(nil, "hello".byteslice(5))
assert_equal(b("o"), "hello".byteslice(-1))
assert_equal(nil, "hello".byteslice(-6))
assert_equal(b(""), "hello".byteslice(0, 0))
assert_equal(b("hello"), "hello".byteslice(0, 6))
assert_equal(b("hello"), "hello".byteslice(0, 6))
assert_equal(b(""), "hello".byteslice(5, 1))
assert_equal(b("o"), "hello".byteslice(-1, 6))
assert_equal(nil, "hello".byteslice(-6, 1))
assert_equal(b("h"), "hello".byteslice(0..0))
assert_equal(b(""), "hello".byteslice(5..0))
assert_equal(b("o"), "hello".byteslice(4..5))
assert_equal(nil, "hello".byteslice(6..0))
assert_equal(b(""), "hello".byteslice(-1..0))
assert_equal(b("llo"), "hello".byteslice(-3..5))
assert_equal(b("\x81"), "\u3042".byteslice(1))
assert_equal(b("\x81\x82"), "\u3042".byteslice(1, 2))
assert_equal(b("\x81\x82"), "\u3042".byteslice(1..2))
end
end