diff options
Diffstat (limited to 'test/ruby/test_lazy_enumerator.rb')
| -rw-r--r-- | test/ruby/test_lazy_enumerator.rb | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/test/ruby/test_lazy_enumerator.rb b/test/ruby/test_lazy_enumerator.rb index caa9a9c713..6e5c1714a5 100644 --- a/test/ruby/test_lazy_enumerator.rb +++ b/test/ruby/test_lazy_enumerator.rb @@ -647,7 +647,7 @@ EOS def test_with_index feature7877 = '[ruby-dev:47025] [Feature #7877]' leibniz = ->(n) { - (0..Float::INFINITY).lazy.with_index {|i, j| + (0..Float::INFINITY).lazy.with_index.map {|i, j| raise IndexError, "limit exceeded (#{n})" unless j < n ((-1) ** j) / (2*i+1).to_f }.take(n).reduce(:+) @@ -656,7 +656,20 @@ EOS assert_in_epsilon(Math::PI/4, leibniz[1000]) } - ary = (0..Float::INFINITY).lazy.with_index(2) {|i, j| [i-1, j] }.take(2).to_a + a = [] + ary = (0..Float::INFINITY).lazy.with_index(2) {|i, j| a << [i-1, j] }.take(2).to_a + assert_equal([[-1, 2], [0, 3]], a) + assert_equal([0, 1], ary) + + a = [] + ary = (0..Float::INFINITY).lazy.with_index(2, &->(i,j) { a << [i-1, j] }).take(2).to_a + assert_equal([[-1, 2], [0, 3]], a) + assert_equal([0, 1], ary) + + ary = (0..Float::INFINITY).lazy.with_index(2).map {|i, j| [i-1, j] }.take(2).to_a + assert_equal([[-1, 2], [0, 3]], ary) + + ary = (0..Float::INFINITY).lazy.with_index(2).map(&->(i, j) { [i-1, j] }).take(2).to_a assert_equal([[-1, 2], [0, 3]], ary) ary = (0..Float::INFINITY).lazy.with_index(2).take(2).to_a |