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-rw-r--r--test/ruby/test_io.rb11
1 files changed, 11 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 5d00f04ef5..d3ac0c5f01 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -2997,6 +2997,17 @@ End
t.kill
end
+ def test_readpartial_bad_args
+ IO.pipe do |r, w|
+ w.write '.'
+ buf = String.new
+ assert_raise(ArgumentError) { r.readpartial(1, buf, exception: false) }
+ assert_raise(TypeError) { r.readpartial(1, exception: false) }
+ assert_equal [[r],[],[]], IO.select([r], nil, nil, 1)
+ assert_equal '.', r.readpartial(1)
+ end
+ end
+
def test_sysread_unlocktmp_ensure
bug8669 = '[ruby-core:56121] [Bug #8669]'