Fix data corruption with small uploads via browsers

StringIO.new(partial_body) does not update the offset for new
writes.  So instead create the StringIO object and then syswrite
to it and try to follow the same code path used by large uploads
which use Tempfiles.

1 files changed, 23 insertions, 0 deletions

diff --git a/test/unit/test_upload.rb b/test/unit/test_upload.rb
index c4d6f6f..b06dfdb 100644
--- a/test/unit/test_upload.rb
+++ b/test/unit/test_upload.rb
@@ -51,6 +51,29 @@ class UploadTest < Test::Unit::TestCase
     assert_equal @sha1.hexdigest, resp[:sha1]
   end
 
+  def test_put_trickle_small
+    @count, @bs = 2, 128
+    start_server(@sha1_app)
+    assert_equal 256, length
+    sock = TCPSocket.new(@addr, @port)
+    hdr = "PUT / HTTP/1.0\r\nContent-Length: #{length}\r\n\r\n"
+    @count.times do
+      buf = @random.sysread(@bs)
+      @sha1.update(buf)
+      hdr << buf
+      sock.syswrite(hdr)
+      hdr = ''
+      sleep 0.6
+    end
+    read = sock.read.split(/\r\n/)
+    assert_equal "HTTP/1.1 200 OK", read[0]
+    resp = eval(read.grep(/^X-Resp: /).first.sub!(/X-Resp: /, ''))
+    assert_equal length, resp[:size]
+    assert_equal 0, resp[:pos]
+    assert_equal @sha1.hexdigest, resp[:sha1]
+    assert_equal StringIO, resp[:class]
+  end
+
   def test_tempfile_unlinked
     spew_path = lambda do |env|
       if orig = env['HTTP_X_OLD_PATH']