test_file.rb: fix noatime

* test/ruby/test_file.rb (TestFile#test_stat): fix noatime case.
  [ruby-core:77943] [Bug #12903]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@56559 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Sat Nov  5 10:07:18 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* test/ruby/test_file.rb (TestFile#test_stat): fix noatime case.
+	  [ruby-core:77943] [Bug #12903]
+
 Fri Nov  4 17:52:44 2016  Koichi Sasada  <ko1@atdot.net>
 
 	* gc.c (heap_page_resurrect): do not return tomb_pages when

test/ruby/test_file.rb

@@ -358,6 +358,8 @@ class TestFile < Test::Unit::TestCase
       sleep 2
       File.write(path, "bar")
       sleep 2
+      File.read(path)
+      a0 = File.stat(path).atime
       File.chmod(0644, path)
       sleep 2
       File.read(path)
@@ -369,7 +371,7 @@ class TestFile < Test::Unit::TestCase
       if stat.birthtime != stat.ctime
         assert_in_delta t0+4, stat.ctime.to_f, delta
       end
-      unless /mswin|mingw/ =~ RUBY_PLATFORM
+      if a0 > stat.mtime
         # Windows delays updating atime
         assert_in_delta t0+6, stat.atime.to_f, delta
       end