naruse	2014-04-22 19:37:01 +0900 (Tue, 22 Apr 2014)

  New Revision: 45662

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=45662

  Log:
    show what filesystem it is on failure

  Modified files:
    trunk/test/ruby/test_io.rb
Index: test/ruby/test_io.rb
===================================================================
--- test/ruby/test_io.rb	(revision 45661)
+++ test/ruby/test_io.rb	(revision 45662)
@@ -1694,7 +1694,7 @@ class TestIO < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_io.rb#L1694
         open(t.path) { |f|
           assert_equal("foo\n", f.gets)
           f.seek(0, IO::SEEK_DATA)
-          assert_equal("foo\nbar\nbaz\n", f.read)
+          assert_equal("foo\nbar\nbaz\n", f.read, "cannot SEEK_DATA at fs(#{f.statfs.type})")
         }
         open(t.path, 'r+') { |f|
           pos = f.pos
@@ -1740,7 +1740,7 @@ class TestIO < Test::Unit::TestCase https://github.com/ruby/ruby/blob/trunk/test/ruby/test_io.rb#L1740
         open(t.path) { |f|
           assert_equal("foo\n", f.gets)
           f.seek(0, :DATA)
-          assert_equal("foo\nbar\nbaz\n", f.read)
+          assert_equal("foo\nbar\nbaz\n", f.read, "cannot SEEK_DATA at fs(#{f.statfs.type})")
         }
         open(t.path, 'r+') { |f|
           pos = f.pos

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