"&coverageId=theCoverage&scaleextent=http://www.opengis.net/def/axis/OGC/1/i(10,20),http://www.opengis.net/def/axis/OGC/1/j(20,30)");
Map<String, Object> extensions = getExtensionsMap(gc);
assertEquals(1, extensions.size());
ScalingType scaling = (ScalingType) extensions.get(Scaling.NAMESPACE + ":Scaling");
ScaleToExtentType ste = scaling.getScaleToExtent();
assertEquals(2, ste.getTargetAxisExtent().size());
TargetAxisExtentType tax = ste.getTargetAxisExtent().get(0);
assertEquals("http://www.opengis.net/def/axis/OGC/1/i", tax.getAxis());
assertEquals(10.0, tax.getLow(), 0d);
assertEquals(20.0, tax.getHigh(), 0d);