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Diffstat (limited to 'test/ruby/test_io.rb')
| -rw-r--r-- | test/ruby/test_io.rb | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb index 0716dd7bf9..f57dee4261 100644 --- a/test/ruby/test_io.rb +++ b/test/ruby/test_io.rb @@ -2866,6 +2866,9 @@ class TestIO < Test::Unit::TestCase assert_equal("foo\nbar\nbaz\n", File.read(t.path)) assert_equal("foo\nba", File.read(t.path, 6)) assert_equal("bar\n", File.read(t.path, 4, 4)) + + assert_raise(ArgumentError) { File.read(t.path, -1) } + assert_raise(ArgumentError) { File.read(t.path, 1, -1) } } end |