Tests for Geometry.union() method (unary union) with floating precision mP - showing that non-polygonal components are discarded correctly GEOMETRYCOLLECTION ( POLYGON ((-3 -2, 700 900, -6 900, -3 -2)), POLYGON((700 900, -1.6859349853697 899.55, 0.3 -0.4, 700 900)), POLYGON ((700 860, 700 899.5, -1.68593498537 899.55, 700 860)) ) POLYGON ((0.2942036115049298 2.226702215615205, -3 -2, -6 900, 700 900, 699.6114719806972 899.5000276853219, 700 899.5, 700 860, 670.2204017222961 861.6785046602191, 0.3 -0.4, 0.2942036115049298 2.226702215615205))