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* array.c (rb_ary_uniq_bang): the array is already unique if the

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length is zero or one.
  (rb_ary_uniq): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26987 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
akr 2010-03-20 04:27:32 +00:00
parent c9dd4823d9
commit 9ce419a45c
3 changed files with 53 additions and 0 deletions
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43
test/ruby/test_array.rb
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@ -1308,6 +1308,30 @@ class TestArray < Test::Unit::TestCase
end
def test_uniq
a = []
b = a.uniq
assert_equal([], a)
assert_equal([], b)
assert_not_same(a, b)
a = [1]
b = a.uniq
assert_equal([1], a)
assert_equal([1], b)
assert_not_same(a, b)
a = [1,1]
b = a.uniq
assert_equal([1,1], a)
assert_equal([1], b)
assert_not_same(a, b)
a = [1,2]
b = a.uniq
assert_equal([1,2], a)
assert_equal([1,2], b)
assert_not_same(a, b)
a = @cls[ 1, 2, 3, 2, 1, 2, 3, 4, nil ]
b = a.dup
assert_equal(@cls[1, 2, 3, 4, nil], a.uniq)
@ -1322,6 +1346,25 @@ class TestArray < Test::Unit::TestCase
end
def test_uniq!
a = []
b = a.uniq!
assert_equal(nil, b)
a = [1]
b = a.uniq!
assert_equal(nil, b)
a = [1,1]
b = a.uniq!
assert_equal([1], a)
assert_equal([1], b)
assert_same(a, b)
a = [1,2]
b = a.uniq!
assert_equal([1,2], a)
assert_equal(nil, b)
a = @cls[ 1, 2, 3, 2, 1, 2, 3, 4, nil ]
assert_equal(@cls[1, 2, 3, 4, nil], a.uniq!)
assert_equal(@cls[1, 2, 3, 4, nil], a)