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-rw-r--r--test/ruby/test_io.rb13
1 files changed, 13 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index 935ee24..7161be1 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -3159,4 +3159,17 @@ End
end
end
end
+
+ def test_close_twice
+ open(__FILE__) {|f|
+ assert_equal(nil, f.close)
+ assert_equal(nil, f.close)
+ }
+ end
+
+ def test_close_uninitialized
+ io = IO.allocate
+ assert_raise(IOError) { io.close }
+ end
+
end