nobu	2013-12-16 19:25:14 +0900 (Mon, 16 Dec 2013)

  New Revision: 44243

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=44243

  Log:
    test_io.rb: IO.write test
    
    * test/ruby/test_io.rb (test_s_write): test for IO.write.  more
      conditions will be needed.

  Modified files:
    trunk/test/ruby/test_io.rb
Index: test/ruby/test_io.rb
===================================================================
--- test/ruby/test_io.rb	(revision 44242)
+++ test/ruby/test_io.rb	(revision 44243)
@@ -2968,4 +2968,20 @@ End https://github.com/ruby/ruby/blob/trunk/test/ruby/test_io.rb#L2968
   ensure
     t.kill
   end
+
+  def test_s_write
+    t = Tempfile.new("test_io")
+    t.close
+    path = t.path
+    File.unlink(path)
+    IO.write(path, "foo")
+    assert_equal("foo", IO.read(path))
+    IO.write(path, "bar", 2)
+    assert_equal("fobar", IO.read(path))
+    File.unlink(path)
+    IO.write(path, "foo", encoding: Encoding::UTF_32BE)
+    assert_equal("\0\0\0f\0\0\0o\0\0\0o", File.binread(path))
+  ensure
+    t.close!
+  end
 end

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