Will BP finally stop the oil eruption?

From New York Times:

The test will shut the well by closing off valves on a new cap that was installed at the wellhead, 5,000 feet down and a few miles from this Coast Guard cutter.

BP officials have said that if the test shows that the well can hold pressure, the valves may remain closed. That would end the gusher that began shortly after the Deepwater Horizon drilling rig exploded on April 20, killing 11 workers. It would not end the cleanup, however. That could go on for years.

The article includes an interactive map of the oil's presence in the Gulf and a graphic of methods that failed to stop the gushing oil.