1 files changed, 43 insertions, 0 deletions
diff --git a/ruby_1_8_5/test/stringio/test_stringio.rb b/ruby_1_8_5/test/stringio/test_stringio.rb
new file mode 100644
index 0000000000..de15ab5508
--- /dev/null
+++ b/ruby_1_8_5/test/stringio/test_stringio.rb
@@ -0,0 +1,43 @@
+require 'test/unit'
+require 'stringio'
+dir = File.expand_path(__FILE__)
+2.times {dir = File.dirname(dir)}
+$:.replace([File.join(dir, "ruby")] | $:)
+require 'ut_eof'
+
+class TestStringIO < Test::Unit::TestCase
+  include TestEOF
+  def open_file(content)
+    f = StringIO.new(content)
+    yield f
+  end
+  alias open_file_rw open_file
+
+  include TestEOF::Seek
+
+  def test_truncate # [ruby-dev:24190]
+    io = StringIO.new("")
+    io.puts "abc"
+    io.truncate(0)
+    io.puts "def"
+    assert_equal("\0\0\0\0def\n", io.string)
+  end
+
+  def test_seek_beyond_eof # [ruby-dev:24194]
+    io = StringIO.new
+    n = 100
+    io.seek(n)
+    io.print "last"
+    assert_equal("\0" * n + "last", io.string)
+  end
+
+  def test_overwrite # [ruby-core:03836]
+    stringio = StringIO.new
+    responses = ['', 'just another ruby', 'hacker']
+    responses.each do |resp|
+      stringio.puts(resp)
+      stringio.rewind
+    end
+    assert_equal("hacker\nother ruby\n", stringio.string)
+  end
+end