diff --git a/y2016/plotting/test.rb b/y2016/plotting/test.rb
new file mode 100644
index 0000000..9f2f58a
--- /dev/null
+++ b/y2016/plotting/test.rb
@@ -0,0 +1,29 @@
+require "sinatra"
+
+# Must use sinatra server for this because fetch() in javascript
+# cannot load from the filesystem.
+get '/test.html' do
+	File.read("./test.html")
+end
+
+get '/responsive_plotter.js' do
+	content_type 'text/javascript'
+	File.read("./responsive_plotter.js")
+end
+
+get '/test_data' do
+	content_type 'binary/octet-stream'
+	data = ""
+	# Use ./test_data if it exists. Otherwise random data.
+	if (File.exists?("./test_data"))
+		data = File.read("./test_data")
+	else
+		1000.times do
+			data += (1024.times.collect do |i|
+				(rand() * 480  - 160)
+			end.pack("F*"))
+		end
+	end
+	data
+end
+