Using Groovy Namespace with slurper and builders

NamespaceTest.groovy

import org.junit.Test

public class NamespaceTest {
 @Test
    public void testMarkupBuilderUsingNamespace() throws Exception {

        final investmentNS = 'urn:investment:facility'

        def path = new XmlSlurper()
        .parseText("""
        <FacilityInvestment xmlns="${investmentNS}">
            <Fund>
                <Name>GOOGL</Name>
                <UnitsHeld>100</UnitsHeld>
            </Fund>
            <Fund>
                <Name>CBA</Name>
                <UnitsHeld>200</UnitsHeld>
            </Fund>
        </FacilityInvestment>
        """)
        .declareNamespace(fi:investmentNS)

        StreamingMarkupBuilder builder = new StreamingMarkupBuilder();


        def ns = builder.bind {
            mkp.declareNamespace(fi:investmentNS)
            mkp.yield(path)
        }

        builder = new StreamingMarkupBuilder()
        def node = builder.bind {
            mkp.declareNamespace(fi:investmentNS)
            fi.FacilityInvestment {
                fi.Fund {
                    fi.Name('GOOGL')
                    fi.UnitsHeld(100)
                }
                fi.Fund {
                    fi.Name('CBA')
                    fi.UnitsHeld(200)
                }

            }
        }
        assert ns.toString() == node.toString()
    }
}