diff options
Diffstat (limited to 'test/io.rb')
| -rw-r--r-- | test/io.rb | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/test/io.rb b/test/io.rb index 02ab038bb..9ce8985f7 100644 --- a/test/io.rb +++ b/test/io.rb @@ -236,6 +236,7 @@ assert('IO.sysopen, IO#sysread') do io.close assert_equal "", io.sysread(0) assert_raise(IOError) { io.sysread(1) } + assert_raise(ArgumentError) { io.sysread(-1) } io.closed? end |