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-rw-r--r--test/ruby/test_enum.rb16
1 files changed, 16 insertions, 0 deletions
diff --git a/test/ruby/test_enum.rb b/test/ruby/test_enum.rb
index d5353f680c..c8f2fad546 100644
--- a/test/ruby/test_enum.rb
+++ b/test/ruby/test_enum.rb
@@ -1,5 +1,6 @@
require 'test/unit'
require 'continuation'
+require 'stringio'
class TestEnumerable < Test::Unit::TestCase
def setup
@@ -22,6 +23,20 @@ class TestEnumerable < Test::Unit::TestCase
$VERBOSE = @verbose
end
+ def assert_not_warn
+ begin
+ org_stderr = $stderr
+ v = $VERBOSE
+ $stderr = StringIO.new(warn = '')
+ $VERBOSE = true
+ yield
+ ensure
+ $stderr = org_stderr
+ $VERBOSE = v
+ end
+ assert_equal("", warn)
+ end
+
def test_grep
assert_equal([1, 2, 1, 2], @obj.grep(1..2))
a = []
@@ -383,6 +398,7 @@ class TestEnumerable < Test::Unit::TestCase
ss = %w[abc defg h ijk l mno pqr st u vw xy z]
assert_equal([%w[abc defg h], %w[ijk l], %w[mno], %w[pqr st u vw xy z]],
ss.slice_before(/\A...\z/).to_a)
+ assert_not_warn{ss.slice_before(/\A...\z/).to_a}
end
end