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author | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-08 07:23:43 +0000 |
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committer | nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2015-12-08 07:23:43 +0000 |
commit | 7d0b7fb4cf5790d42051d03933a3a3abf6ea0d1c (patch) | |
tree | a30b739b30c944aa291d05e41e1142d06506b5dc /test/ruby/test_lazy_enumerator.rb | |
parent | 506b25aabf66c54cffe478958f8672f7fe6fa669 (diff) | |
download | ruby-7d0b7fb4cf5790d42051d03933a3a3abf6ea0d1c.tar.gz |
enumerator.c: lazy_grep_v
* enumerator.c (lazy_grep_v): add Enumerator::Lazy#grep_v as well
as Enumerable, to enumerate lazily.
[ruby-core:71845] [Feature #11773]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52943 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'test/ruby/test_lazy_enumerator.rb')
-rw-r--r-- | test/ruby/test_lazy_enumerator.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/test/ruby/test_lazy_enumerator.rb b/test/ruby/test_lazy_enumerator.rb index 952a773d58..a0c5068710 100644 --- a/test/ruby/test_lazy_enumerator.rb +++ b/test/ruby/test_lazy_enumerator.rb @@ -197,6 +197,34 @@ class TestLazyEnumerator < Test::Unit::TestCase e.lazy.grep(proc {|x| x == [2, "2"]}, &:join).force) end + def test_grep_v + a = Step.new('a'..'f') + assert_equal('b', a.grep_v(/a/).first) + assert_equal('f', a.current) + assert_equal('a', a.lazy.grep_v(/c/).first) + assert_equal('a', a.current) + assert_equal(%w[b c d f], a.grep_v(proc {|x| /[aeiou]/ =~ x})) + assert_equal(%w[b c d f], a.lazy.grep_v(proc {|x| /[aeiou]/ =~ x}).to_a) + end + + def test_grep_v_with_block + a = Step.new('a'..'f') + assert_equal('B', a.grep_v(/a/) {|i| i.upcase}.first) + assert_equal('B', a.lazy.grep_v(/a/) {|i| i.upcase}.first) + end + + def test_grep_v_multiple_values + e = Enumerator.new { |yielder| + 3.times { |i| + yielder.yield(i, i.to_s) + } + } + assert_equal([[0, "0"], [1, "1"]], e.grep_v(proc {|x| x == [2, "2"]})) + assert_equal([[0, "0"], [1, "1"]], e.lazy.grep_v(proc {|x| x == [2, "2"]}).force) + assert_equal(["00", "11"], + e.lazy.grep_v(proc {|x| x == [2, "2"]}, &:join).force) + end + def test_zip a = Step.new(1..3) assert_equal([1, "a"], a.zip("a".."c").first) |