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* string.c (rb_str_prepend): new method by Sora Harakami

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[Feature #3765]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@29120 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
shyouhei 2010-08-27 07:33:19 +00:00
parent 0cfe185f39
commit cff3c3d52a
3 changed files with 42 additions and 0 deletions
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16
test/ruby/test_string.rb
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@ -1882,4 +1882,20 @@ class TestString < Test::Unit::TestCase
assert_equal('"\\u3042\\u3044\\u3046"', "\u3042\u3044\u3046".encode(e).inspect)
end
end
def test_prepend
assert_equal(S("hello world!"), "world!".prepend("hello "))
foo = Object.new
def foo.to_str
"b"
end
assert_equal(S("ba"), "a".prepend(foo))
a = S("world")
b = S("hello ")
a.prepend(b)
assert_equal(S("hello world"), a)
assert_equal(S("hello "), b)
end
end