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-rw-r--r--test/ruby/test_file.rb4
1 files changed, 2 insertions, 2 deletions
diff --git a/test/ruby/test_file.rb b/test/ruby/test_file.rb
index 41debbbb1c..01992a83d4 100644
--- a/test/ruby/test_file.rb
+++ b/test/ruby/test_file.rb
@@ -326,9 +326,9 @@ class TestFile < Test::Unit::TestCase
File.open(tmp, :mode => IO::RDWR | IO::CREAT | IO::BINARY,
:encoding => Encoding::ASCII_8BIT) do |x|
- assert x.autoclose?
+ assert_predicate(x, :autoclose?)
assert_equal Encoding::ASCII_8BIT, x.external_encoding
- assert x.write 'hello'
+ x.write 'hello'
x.seek 0, IO::SEEK_SET