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-rw-r--r--mrbgems/mruby-enum-ext/test/enum.rb8
1 files changed, 8 insertions, 0 deletions
diff --git a/mrbgems/mruby-enum-ext/test/enum.rb b/mrbgems/mruby-enum-ext/test/enum.rb
index 4dfa2fec0..d0f47448f 100644
--- a/mrbgems/mruby-enum-ext/test/enum.rb
+++ b/mrbgems/mruby-enum-ext/test/enum.rb
@@ -94,3 +94,11 @@ end
assert("Enumerable#minmax_by") do
assert_equal ["dog", "albatross"], %w(albatross dog horse).minmax_by { |x| x.length }
end
+
+assert("Enumerable#none?") do
+ assert_true %w(ant bear cat).none? { |word| word.length == 5 }
+ assert_false %w(ant bear cat).none? { |word| word.length >= 4 }
+ assert_true [].none?
+ assert_true [nil, false].none?
+ assert_false [nil, true].none?
+end