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-rw-r--r--test/io.rb11
1 files changed, 11 insertions, 0 deletions
diff --git a/test/io.rb b/test/io.rb
index a5ce7e049..a9bdc3e4f 100644
--- a/test/io.rb
+++ b/test/io.rb
@@ -256,6 +256,17 @@ assert('IO#pos=, IO#seek') do
io.closed?
end
+assert('IO#rewind') do
+ fd = IO.sysopen $mrbtest_io_rfname
+ io = IO.new fd
+ assert_equal 'm', io.getc
+ assert_equal 1, io.pos
+ assert_equal 0, io.rewind
+ assert_equal 0, io.pos
+ io.close
+ io.closed?
+end
+
assert('IO#gets') do
fd = IO.sysopen $mrbtest_io_rfname
io = IO.new fd