OptionalAnnotationOnParameterFacetFactoryTest.java

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 *  to you under the Apache License, Version 2.0 (the
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package org.apache.isis.core.metamodel.facets.param.parameter;

import java.lang.reflect.Method;
import org.apache.isis.applib.annotation.Optional;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facets.AbstractFacetFactoryTest;
import org.apache.isis.core.metamodel.facets.FacetFactory.ProcessParameterContext;
import org.apache.isis.core.metamodel.facets.param.parameter.mandatory.MandatoryFacetInvertedByOptionalAnnotationOnParameter;
import org.apache.isis.core.metamodel.facets.objectvalue.mandatory.MandatoryFacet;

public class OptionalAnnotationOnParameterFacetFactoryTest extends AbstractFacetFactoryTest {

    private ParameterAnnotationFacetFactory facetFactory;

    public void setUp() throws Exception {
        super.setUp();
        facetFactory = new ParameterAnnotationFacetFactory();
    }
    public void testOptionalAnnotationPickedUpOnActionParameter() {

        class Customer {
            @SuppressWarnings("unused")
            public void someAction(@Optional final String foo) {
            }
        }
        final Method method = findMethod(Customer.class, "someAction", new Class[] { String.class });

        facetFactory.processParamsOptional(new ProcessParameterContext(Customer.class, method, 0, null, facetedMethodParameter));

        final Facet facet = facetedMethodParameter.getFacet(MandatoryFacet.class);
        assertNotNull(facet);
        assertTrue(facet instanceof MandatoryFacetInvertedByOptionalAnnotationOnParameter);
    }

    public void testOptionalAnnotationIgnoredForPrimitiveOnActionParameter() {

        class Customer {
            @SuppressWarnings("unused")
            public void someAction(@Optional final int foo) {
            }
        }
        final Method method = findMethod(Customer.class, "someAction", new Class[] { int.class });

        facetFactory.processParamsOptional(new ProcessParameterContext(Customer.class, method, 0, null, facetedMethodParameter));

        assertNull(facetedMethod.getFacet(MandatoryFacet.class));
    }

}