Automated intersection tester, Just add blueprint

Can automatically place safe exit blocks, and test multiple blueprints in sequence

Quick start guide

Go to start new game.
one of the options down the side will be "RailTester/AutoTester"
when you load into the map, you will have a control panel window (the T symbol button on the toolbar shows/hides this window while on this map)
get the blueprint you want to test, (either via blueprint storage, or blueprint string), and with the blueprint in your hand click the start button on the control panel
if you have several blueprints to test, instead put them all in the chest in the middle of the map, then press start (blueprints will be tested one after another and results will go to the factorio log file)
if you wish to change the test configuration, press the red button with the gears on the control panel

Note: have not tested on 2.0. It might work, it probably wont. I aim to fix it by the end of Tuesday after release