Test case from Anders Johansson - JTS list - Nov 29 2011 Inside buffer of a simple rectangular geometry fails - should be empty, but is non-empty. com.vividsolutions.jtstest.testrunner.BufferResultMatcher Buffer POLYGON ((0.28 0.38, 0.41 0.21, 0.13 0, 0 0.16, 0.28 0.38)) POLYGON EMPTY